hii guys i know that all of them are mainly stability systems ...
but i dont reall know howo they work ..
i guess each works diffrently than the other...
does anybody know how each one of them works ...

thanks

They're all almost the same.

i dont think they are the same but diffrent names and initials!

I'm not sure but I think they are:
DSC = Dynamic Stability Control
ESP = Electronic Stability Program
TCS = Traction Control System
:D

i found an explenation about the systems ....
by the way they are all related to the brake system and all consedered modification for brake systems ...
its now 4.30 AM and im so sleepy i cant translate it ...
so i will post it tomorrow ...

sorry the guest was me ...
but as i said im sleeping on the keyboard

traction control isnt related to the brakes white night!
It alters the opening of the throttle depending on wheel spin.
The other 2 are the same thing - using brakes to slow one corner of the car down to stop oversteer.

here are some information about the ABS TCS ESP and DSC .......
they are all included in the brakes system ....

what do those systems include :
1. engine managment
2. mechanical brake assist
3. 4 wheel sensors
4. steering wheel angile sensor
5. hydraulic control unit with intefrated electronic controller
6. laterial acceleration sensor and yawrate sensor (cluster)

TCS - Traction Control System :
an electro mechanic system that nutralizes and effects the wheels dynamics when accelerating .
its used for :
1. stability in RWD
2. handling in FWD
3. no burnning tyers when accelerating (something like burnout when u accelerat when standing)
the system usued all the systems above including the ABS .

EBD - Electronic Break Force Distribution (DRP) :
an electromechnic system that elemainates and effects on the dynamic of the rear wheels and make the rear wheel brake suitable with the brakes on the front wheels.
the systems uses the ABS too ...

ESP - Electronic Stability Program (VDC,IVD,TRAXXAR) :
an electronic system that effects on the wheel dynamics and the whole cars dynamics in case of braking , accelerating and crusing .
the systems uses the systems above and some addional systems like an accleometer and YAW system .
those sensors makes at avaliable to read :
1. the steering angle that the driver sets .
2. the cars angle like in udersteering and oversteering and so ..
when the system reads a diffrent angle , then the system activates a second system that includes a mosolonoed ( sorry i dont know how to write it hopefully its the same in english) that activates the valves of the car and the engine to hold and release the brakes oil to each wheel seperatly .
this system allows to make an asimetric brake force and moment then the YAW systems comes into action and stables the forces on the car and so the car come bake to the angle set by the driver from the steering from the first sensor .

:arrow: so mallon they are deaply connected to the braking system after all ..

Great job White-Night!! :D

hopefully you understand it ...
i did my best to translate it ...but im not that good in technical stuff :)

NO ITS NOT! :D

Traction control has nothing to do with braking. And the information YOU gave says nothing about braking on TCS! You say something about ABS, but thats to stop the wheels locking and ensure equal braking force goes to each wheel.

so mallon they are deaply connected to the braking system after all ..

As I said previouly no they are not - ESP and DSC are things that alter the braking. TCS alters the throttle to stop wheel spin - ABSOLUTELY NOTHING TO DO WITH BRAKING! :shock:

you are wrong and here is a little proof ...

The Electronic Stability Program helps improve cornering and control. By monitoring the grip at the wheels as well as the driver's steering and braking inputs, ESP can sense differences between the driver's intentions and the vehicle's direction in turns

this is taken from Mercedes-Benz M-Class ESP
Electronic Stability Program ®

the site of this is
http://www.4x4abc.com/ML320/ML320_ESP_gr.html

by the way i checked alot about it since i first posted it and got no answer...
check for yourself about it ...
if you say im wrong .... please DO TELL ME HOW IT WORKS COUSE IT DOES CONTROL BRAKES !

read all i wrote and then tell me what you thing and do check the link !

and an other thing i found in the site to explain better :

Suppose you enter a right-hand turn too quickly.

The car oversteers and threatens to go into a spin. ESP immediately springs into action, applying the
brakes to the front left wheel. The car is back on track. (left)

White-Night have you been smoking something?

Read what I said above - ESP and DSC use brakes to slow one corner of the car down to stop oversteer.

TRACTION control DOES NOT use brakes - it varies the opening of the throttle if there is wheel spin.

nop not today when im smoking i dont really write surely not translate articles ....
the thing is that i still think they do use brakes even in the traction control ....they do use the engine throttle too but i already said that ...
the thing is that you say they dont use brake and have nothing to do with it ... but they do !!!

here is a paragraph from acura's site... which explains about the traction control !

The Traction Control System (TCS) component of VSA uses sensors that monitor the front wheels and computer-controlled modulation of engine power and front brakes to help prevent wheel spin when starting out or accelerating. If the sensors detect excessive front-wheel acceleration, TCS automatically closes a secondary throttle valve until wheel spin stops. This helps the TSX maintain traction during acceleration and helps the driver retain steering control, even when accelerating on slippery surfaces.

thats all i want to say .. that they do ... i dont want to enter a meaningless argue here ..
read this one ...

i understand what you are saying .. but that is not the point...
and by the way ...
the traction control was in the old age ( like when they were first made only worked in low speeds by using the brakes ... they new ones still use them and use the engine throttle too )

just to clear it up ..

i understand what you are saying .. but that is not the point...

well what is then?
I can assure you im right White!

I can assure you im right White!
i didn't really understand that... you and im after each other didn't make sence to me ..
i guess your the one whos somking :lol:
now for real read the post about the traction control in the acura and then tell me if im right or you ...
by the way we are both right they do use the engine throttle... but they use the brakes too !

WHite 0 im right!

You may be getting mixed up in the fact that ABS is used to detect wheel spin?

But Traction control is DEFINETLY when the car alters throttle depending on wheel spin. DEFINETLY. :D

Mallon, White-Night is right. TCS controlls the throttle but ALSO applies braking power when needed.

man i tired and wanna sleepy .....
i gave you links and explenations from Acura till Benza...
at least in the Acure they talked about the Traction control .. and as you can read they do use brakes....

search in google and see for yourself ...
put the search as -how TCS Traction Control System works
and you will see that all of the pages .. even in the breifing talk about brakes .. and brake pressure ........

and if you wanna convince me otherwize .... please send me a reliable link that sayes otherwize .....
sorry but im hard to convince specially after all the reading i did about the systems .. :wink:

all i can say is that the tradition sense of the phrase traction contol -i .e. the one used by the FIA (officials to the people who invented it) , is that upon wheel spin the computer will reduce throttle.

man give me a link !
by the way how do you thin they control the wheel spin of each tyre....
the engine give the power and connected only to they wheels which are moving ... like in the RWD only to they rear wheels ..... and the same in the FWD ...

now im talking about logic...
and please do give me a link that supports what you are saying ...

by the way how do you thin they control the wheel spin of each tyre....
the engine give the power and connected only to they wheels which are moving ... like in the RWD only to they rear wheels ..... and the same in the FWD ...

Awhh white night you talk about logic and then you say something like that.
Using your example of a RWD car - why would the front wheels spin?
The rear wheels stop spin whenever the torque to the wheel is reduced below a certain level. A level that depends on tyres and road surface.

I dont have a link - I know this stuff form following F1 for the last ten years - whilst you are the person who started this topic asking what these systems where!

man im telling you what written in reliable sites....
i dont know about F1 that much ... but when you do have the time ... post a link that don't mention the brakes....
couse i checked 13 sites.... i know it harder for you .. i have DSL connection so its easier on me but Saab Acura and all the others that have TCS also mention the brakes in the traction control .......

sorry man but im still not convinsed ...

im not too worried if you aint convinced - read my revious post - and youll observe how you havent understood what youve read!
Ill rest assured that the FIA agrees with me.

A plain and simple explaination second paragraph. And remember F1 invented TC so its their definition that is standard.

http://www.indiacar.com/index2.asp?pagename=http://www.indiacar.com/nfs/technical/traction.htm

And here we have in the FIA F1 rules and regulations their definition of Traction control - no mention of brakes.

http://www.formula1.com/insight/technicalinfo/11/462.html

ok i read all the article ....
it didn't mention the brakes.... maybe you are right after all ..
but why did they mention it in all other places and companies explained the Tractin control also uses brakes.....
im starting to wonder but it just might be only for F1 cars...
but i now know why you are so sure and convinced about the brakes !

i will check more deap .. hopefully i won't drown !!! :lol:

hmmm well that's strange - I wasnt too sure if i was right, but as it turns out I was right, must have just been luck. You where starting to convince me even though you didnt 'know' how the system worked before yesturday.

here are somesites about the traction control system that do mention brakes...

subrau news...explains about the traction control in the last paragraph :
http://www.subaru.com.hk/pdf/SNS0303.pdf

Acura the control site.. press on the traction control (blue color) and you will see the brakes there too :
http://www.acura.com/models/model_perf_control.asp?module=tsx

the TCS in the Saab in the last paragraph :
http://viggen.saabnet.com/tsn/models/2000/pr9.html

TCS in the Hammer uses the brakes in the explaining article page 4 :
http://media.gm.com/division/hummer/products/02hummer/H2_SUV/H2_safety%20and%20security.pdf

automotive engineering site that mention the TCS and the brakes upgrade to help them :

http://www.sae.org/automag/techbriefs/07-2002/page2.htm

and other sites that do mention them together ... if you do read whats written there you will see why im so confused !! :?

and here is one for ford .... its a big page it took a long time to get on the screen so i will only cut the nessesary part ...

Mondeo- Strength, Safety and Security six

The new Mondeo features an advanced interactive vehicle dynamics system which features an Electronic Stability Programme (ESP).
ESP is a development of the ABS and traction control systems (TCS). While ABS and TCS maintain stability under braking and acceleration, ESP does so while manoeuvring. Using seven different vehicle sensors and two independent microprocessors, ESP continuously checks - 150 times per second - whether the behaviour of the car is matching the driver’s intentions

-------------------------------------------------------------------------

here they say that the TCS the traction control is a braking system .. or amont the braking systems ...
the full page is here
http://www.fordmotorcompany.co.za/Press/Ford_Mondeo_Strength_Safety_Security.doc

by the way im not convinsed im CONFUSED !!!! :cry:

While ABS and TCS maintain stability under braking

ABS - brakes
Traction Control - Throttle managment

White Night give up!

Anyway Im going to bed - ill see if you respond in the morning!

And as I said before F1 inivented the technology so its their definition that is taken.

here is all about those systems ....
its big and its really hard to understand ... at least for me .....
http://www.cs.umd.edu/class/spring2002/cmsc818m/doc/0220/expanding.pdf

by the way if they weren't connected why did they mention them together as when they wrote While ABS and TCS maintain stability under braking and acceleration
if they weren't connected the TCS would be mentioned alone as the ESP did .. although they also mentioned it used brakes. .....

Sweet Dreams mallon ......i will keep digging in the net till i find the answer to this thing !!!!!

Ive already answered this White 0 you arent reading what you are replying to!

Bottom line: and you should leave it at this - The inventors of Traction control define it as

As with systems on road cars, Formula One traction control works by a comparison of wheel and track speeds, the information gathered by electronic sensors. If the wheel is travelling quicker than the road it is passing over then the engine will be progressively throttled back to prevent wheelspin.

End of topic!

i read the posts don't worry !
but it seems your not opening the links that explains my point of view,
or should i cut and paste to the forum ...
anyways i will keep looking for answers...

i dont really agree couse FIA don't present the production cars.. the company may change the systems ...
FIA's rules dont go for regular cars too ....

and i dont see in the post that you mentioned about the throttle only brakes for the ABS and TCS !! sorry[/quote]

i dont really agree couse FIA don't present the production cars.. the company may change the systems ...
FIA's rules dont go for regular cars too ....

Well Traction control isnt a rule...
Isaac Newton discovered Gravity as a force, and defined all forces as Newtons.
A force is a force.
Newton discovered it, Newton Defined it.
Traction control is traction control.
F1 'discovered' it, F1 defined it.

Whether a production car company takes it, is irrelevant, its still basically F1's system as they defined it.

was the system made by F1 called TCS ???
im speaking about that system.... in the F1 article there is nothing about this name only traction control ..... and im talking about them in cars.... if you read the articles that i posted you can see that the TCS in Regular cars use brakes ...i hope you read the links i give you as i read yours... so that we can see from the same point of view ...
im still looking ... C U!

No I dont read all you posts - I already know 8) :wink:

Please continue looking and ill check what youve written in the morning.

traction control is traction control system FGS - its questions like that white that make me wonder why you are arguing in the first place. :roll:

i never heard you talking about an FGS ...
TCS is what im talking about
T for traction
C for control
S for System ....

here are some article talking about how TCS was invented ...
it was kinda funny that i didn't find anything about the F1 :!:
i searched in google ...(who invented the TCS traction control system)
you will find 4 pages of results... i checked every one of them ...
most of them discribe how TCS works in cars, all of them use brakes too ...
some of the interesting thing i find were in these sites :

the TCS in the subaru OUTBACK WAGON MODELS FOR 2001
http://www.arifleet.com/pnews/2000/009.htm#fn
that used brakes too

and TRACTION CONTROL SYSTEMS ON ROAD CARS
ADVANCED VEHICLE SYSTEMS 241MEC
31.01.2003
D. Missirys
J. Pienaar
S. Pawsey
R. Talvitie

all about traction control systems and how they work
it seems Bosch group made most of the systems ...

C:\Documents and Settings\anus\Local Settings\Temporary Internet Files\Content.IE5\HGO7HTOP\Traction_cont rol[1].html

and an other article that writes that it was Bosche invention...

http://www.parttrackers.com/library/1/73/78/

if you dont want the whole article this may give you an idea ..
The basic idea is to use a computer and a network of sensors to keep you from swapping ends when you put the pedal to the metal on a slippery road and/or in a curve. Paradoxically, by limiting engine output and applying the brakes, it'll also cut your 0-60 time. After all, you're not going anywhere at all while you're smoking those tires.

As the Bosch literature puts it, "In order to maintain directional stability and prevent the vehicle from breaking away, the wheels should neither lock up during braking, nor should they spin when driving off," which is certainly true enough, if overly formal.



and a an other site explaining about Traction Control Systems :
http://www.musclecarclub.com/library/tech/traction-control.shtml

The traction control in F1 works different than the traction control in production cars. White-Night is right.

...jimkk29 ....
i know a guy who is THE EXPERT in car computers and all the stuff around it...
he gives lectures to mechanics and give lectures to some guys in an israely car forum .
i have just sent him a message with my point of view and mallons including the sites mallon posted so that the question would be more clear....

hopefully he will give me an answer tonight and i will post it ....

Here you have a big article that the link didn't work or it was wrong from my 2 last post ...
its long but it explains everything ...

TRACTION CONTROL SYSTEMS

ON ROAD CARS


ADVANCED VEHICLE SYSTEMS 241MEC

31.01.2003


D. Missirys

J. Pienaar

S. Pawsey

R. Talvitie


SUMMARY

Traction control systems are one of the most important developments in the active safety of road cars in the past 20 years. There are two types of system on the market today: normal traction control and stability control.

Both systems were created and developed by Bosch GmbH and Mercedes-Benz AG in Germany, and both systems made their debut on Mercedes-Benz cars: traction control in 1981 and stability control in 1995.

Traction control acts only on the driven wheels of the car and stops any wheel spin by cutting engine revs or by applying the brakes.

Stability control on the other hand monitors all the wheels of the vehicle and corrects both oversteer and understeer slides.

Both systems are very effective safety devices in slippery conditions and in unexpected road situations. However, both systems are also not infallible: carrying too much speed into a corner can still cause an accident.


CONTENTS

INTRODUCTION

HISTORY

TRACTION DATA

TRACTION CONTROL

STABILITY CONTROL

CONCLUSION


INTRODUCTION

Some of the biggest advances in automotive technology in the past 25 years have come in the area of safety. Spurred by improvements in microprocessor speed, miniaturisation, and software development, the automobile continues to evolve. Traction control systems are one of these safety developments that have reached the automobile during this period.

Traction control systems are the most important development in the active safety of road cars since the popularisation of ABS brakes and form part of a series of three braking technology developments that began appearing on vehicles in the mid-eighties. In chronological order these three developments are: ABS, traction control and stability control. The difference between traction control and stability control is that normal traction control systems only limit the slipping of the driven wheels whereas stability control systems control the slipping of all the four wheels.


HISTORY

Both traction control and stability control systems were created and developed by Bosch GmbH and Mercedes-Benz AG in Germany and the systems fitted to most vehicles are made by Bosch. The system was invented a surprisingly long time ago in 1959 by Dr Fritz Nallinger, the then Chief Engineer at Daimler-Benz who patented a control device designed to prevent the spinning of the driven wheels by controlling the engine, transmission and brakes. However, the device remained just a theory due to the lack of sensors and control systems capable of performing with the split-second speed required of a traction control system.

Bosch test track www.bosch.com

In 1978 Bosch launched the ABS (Antiblockiersystem) brakes which included the wheel rotation sensor technology required in traction control systems. This paved the way for the development of traction control systems, or ASR (Antischlupfregelung) as it was named by Bosch and Mercedes-Benz. The system was launched in 1981 on the W126 S-Class Mercedes-Benz and intervened in both the braking system and the engine to regulate the slipping of the rear wheels. In 1986 the system was launched by Bosch for use by other car manufacturers.

1981 Mercedes-Benz S-Class W126 www.mercedes-benz.com


Following computer simulations, the first trials were started in 1987 with vehicles equipped with a Transverse Slip Control System which controlled the skidding movements of the vehicle by selective intervention in the chassis, engine and transmission. After the success of these tests the development of production version began in 1992 with more than 40 engineers from Mercedes-Benz and Bosch being involved in the project. The system, now named ESP (Electronic Stability Program) was launched to the press on a frozen lake in Sweden, in March 1994 and production began in the spring of 1995 on the W140 Mercedes-Benz CL600 Coupé. The system was also made available to other manufacturers.

1995 Mercedes-Benz CL600 W140 www.mercedes-benz.de


TRACTION DATA

In order to achieve the maximum acceleration possible, the slip between the tyre and the road has to be decreased to a point where the tire is just beginning to slip against the road.


The graph above shows that this ‘optimum slip’ value is around 10% for a dry road surface and 5% for a wet road surface. It is most important that this level of slip has to be carefully kept at these levels, or close to them, since grip decreases dramatically above them. This makes for a very fine balance between too much power and too little acceleration.

The difficulty of maintaining the correct levels of slip during varying conditions makes experienced rally drivers go for a slip level of 10%-20%, thus using almost 90% of the available traction. This way, they are close to decreasing acceleration too much, but also closer to retaining 100% of the traction. The less experienced drivers, not having as precise throttle control and timing as the more experienced ones do, tend to spin their wheels more (20%-30% slip) than letting the car accelerate poorly due to insufficient throttle input.


This shows that good drivers still stay cautious about their throttle modulation, in case the slightly spinning wheels suddenly grip the road surface and stop spinning completely. This, however, might decrease the total acceleration of the vehicle, but will definitely give them nearly 100% traction figures. The above driver habit has to do with the response time of a human being, which is nearly 1/10th of a second. Also the fastest throttle response time is around that range, making for a total driver-car lag of 0.2 seconds. The advent of traction control with 1/1000th of a second response time significantly helps keeping wheels near, but never over, the critical slip levels, for varying conditions.

TRACTION CONTROL

Traction control works at exactly the opposite end of the scale from ABS – dealing with acceleration rather than deceleration. In other words, traction control regulates wheel-spin during acceleration to ensure maximum contact between the road surface and the tyres, even under less than ideal road conditions.

Traction control systems are design to control wheel-spin by monitoring the speed of all four wheels and controlling the engine power. ABS sensors are used to monitor the speed of all four wheels every 1000th of a second. The information is sent to the Electronic Control Unit (ECU) to adjust the amount of power to the wheels through engine speed and selective braking. These systems are extremely sensitive comparing right hand driven and undriven wheels separately to the left hand driven and undriven wheels. This allows the system to utilise different strategies for when the vehicle is driving in a straight line or for when the vehicle is cornering.

There are two methods of controlling the engine power. For fuel injected engines, the system controls power by means of a fuel cut and for a carburettor engine power is controlled by means of a spark cut.


This pictures shows a BMW M Coupé going around a corner at high speed with the traction control turned off.

In this picture the traction control is turned on and although the car approached the corner at the same speed the traction control system slowed the car down to safely go through the corner without any wheel-spin.

www.racelogic.co.uk

Traction control systems makes the biggest difference when driving on a wet and slippery roads.

STABILITY CONTROL

Also known as,

- Electronic Stability Program (ESP)

- Dynamic Stability Control (DSC)

Stability control is the latest in a series of braking-related developments that began appearing in production vehicles in the 1980s. The first versions of this new technology appeared in the top of the range vehicles produced by manufacturers Mercedes and BMW, namely in the S-Class and the 7 Series. The reason for this German advance in technology is because the Bosch group that first designed the system is one of the largest Original Equipment Manufacturers and is based in Stuttgart. For many years the Bosch group has been a world leader in safety system development, and by the time of the release of their stability control system they already had their ABS brakes and their ASR traction control systems on the market and in production.

The Stability Control system came out of the natural progression of these safety orientated systems. The Bosch definition of Stability Control is as follows,

ESP = (ABS + TCS)^2

ESP combines both the Antilock Braking System with the traction Control system and multiplies the advantages of both these tried and tested systems: by improving transverse dynamics along with longitudinal dynamics ESP achieves the ultimate objective – stability in all directions.

www.bosch.com

Following the success of, and the ground work covered by the ABS and traction control systems the first two building blocks were in place onto which the Stability Control system could be built.

Stability control incorporates everything ABS and traction control can achieve, however, the major difference is the inclusion of a Yaw-Sensing feature, this is also known as a rotational speed sensor. Yaw can be described as "the movement of an object turning on its vertical axis." The yaw sensor enables the electronic control unit of the system to sense when the vehicle begins to side skid and will then work to correct the situation. Components of the Bosch Electronic Stability Program www.bosch.com

Traction Control and ABS only function in the longitudinal direction of the vehicle, it is the ability of the Stability Control system to work also in the lateral directions that makes it a far more powerful safety feature.

The Bosch ESP system works initially from the yaw sensor sensing the amount of roll the vehicle is experiencing, Bosch claim that this is sampled at a rate of twenty five times per second.

The sensor is able to determine how far off-axis the car is tilting, this information is then fed to the system control unit which will then compare the data with what it is receiving from the other sensors that make up the stability control system, and also what the traction control system is sending.

Information is fed to the control unit from the steering mechanism, giving the current steering angle, and the accelerator position, the demand being made on the engine.

It is the combination of the steering position, throttle position and yaw sensor that make up the basic stability control system, the other sensor will already have been installed for the traction control and ABS systems.

If the information fed to the control unit is outside the safe boundaries it will act to correct the situation. This is done by the application of appropriate breaking forces applied to wheels that, under the circumstances, have the most grip. It is here that the Stability Control will rely upon the traction control system as, as has previously been discussed, it has already been monitoring the grip levels. The traction control will then rely upon the ABS to ensure that best use is made of the available grip and so the chain is completed

Understeer Oversteer www.mercedes-benz.com


Stability Control is particularly successful when driving conditions are poor, ice on the road, rain or snow. It has the ability to do most of the thinking for the driver enabling safer progress while driving. Depending on the particular driving situation, the system may activate an individual wheel brake or any combination of the four, as well as control the throttle, until the vehicle is once again stable.

ESP not engaged ESP engaged www.edmunds.com

The pictures above show the stability control in action. The vehicle in the left hand set of pictures shows the effects of entering a corner carrying too much velocity. The vehicle will, depending on the suspension set-up, understeer or oversteer towards the outer radius resulting in a collision. Pay particular attention to the amount of body roll that the left centre picture shows the vehicle is experiencing, this is what the stability control system will initially sense and act to control. The same test has been repeated in the right hand set of pictures; however, in this series the stability control system is active. The system senses the increased amount of yaw angle, as seen in the first test, but then reduces engine power output - cutting the throttle – and will brake the wheels with the highest level of grip.

This process will continue until the system senses that the vehicle has returned to a safe situation where the yaw angle is within tolerance.


In conclusion it is important to understand that the Stability Control system is not a ‘stand alone’ system. In effect it ‘piggy-backs’ the existing systems and could not function without them, hence the equation quoted by Bosch in their definition.

The stability control system masquerades under many other names as dictated by the different vehicle manufacturer, below is a list of the most popular systems available to the public market.

Audi: Electronic Stability Program (ESP).

BMW: Dynamic Stability Control (DSC).

DaimlerChrysler: Electronic Stability Program (ESP).

Ford Motor Company: Advance Trac.

General Motors: Active Handling System (Corvette), Precision Control System (Oldsmobile), Stabilitrak (Pontiac, Buick, Cadillac).

Jaguar: Dynamic Stability Management (DSM).

Lexus: Vehicle Skid Control (VSC)

Porsche: Porsche Stability Management (PSM).

Volkswagen: Electronic Stability Program (ESP).

Volvo: Dynamic Stability Traction Control (DTSC).


Stability Control is the successful operation of three safety systems, Traction Control, ABS and the Stability Control system itself. It requires its own sensors for function, a throttle position sensor, steering position sensor and fundamentally the yaw sensor.

Bosch are not the sole manufacturer of these safety systems, three other manufacturers also build systems for passenger cars they are TRW, Delphi and Continental-Tevis.

Currently the Stability Control system is seen as something of a luxury by car manufacturers. Many only offer the system as standard on the highest level models, and only few will offer it as an option on lower level models if at all. It is strange considering that even a cheap car has the same chance of a loss of control through driver error or unseen/inclement driving conditions.

The future is stability control offered throughout the product range of vehicle manufacturers. This will happen when equipment and component costs fall far enough to make it feasible.

Stability Control is an investment in safety for not only the consumer but also the manufacturer, safety is what reputations are made and broken on.

"ESP helps drivers maintain control of their vehicles in critical situations and thus avoid serious accidents"

Bosch 2003

DISCUSSION

Like most other new automotive inventions both traction control and stability control made their debut in top of the range luxury cars. There is little practical reason for this but customers of luxury cars may be more willing to pay for new technology in their cars than normal buyers. Also, since new technology can be very expensive, they have a smaller effect on the price of an already expensive car.

CONCLUSION

Traction control and stability control systems are the most important development in the safety of road cars since ABS brakes. Both these German inventions offer excellent additional safety in slippery or otherwise unexpected road conditions. However, neither system is infallible: driving too fast into a corner can still cause an accident. The systems act as aides rather than safety nets.

SOURCES

www.mercedes-benz.com

www.bosch.com

www.racelogic.co.uk

www.edmunds.com

www.audi.com

www.bmw.com

www.ford.com

www.gm.com

www.jaguar.com

www.lexus.com

www.porsche.com

www.volkswagen.com

www.volvo.com

WWWWWWWOOOOOOOOOOOOOOOWWWWWWWWWW!!!!!!!! !!!!!!!!!!!!!!! :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock:
THIS IS REAAAAALLY I-M-P-R-E-S-S-I-V-E, WHITE-NIGHT!!!!!!!!!! :shock: :shock:

i dont get it ..
why don't mallon just understand ...
the traction control in REGULAR CARS ....STREET CARS ..... all of them uses brakes ....
i dont really know about F1 ... i didn't really find anything except the site he posted and its true they didn't mention any brakes .. but that is in F1 cars man .....

here you are telling me that the article in the F1 site is true and all the car manufctors lie in their official sites !!!

mercedes-benz , audi , bmw , ford , gm , jaguar , lexus , porsche , volkswagen , volvo , saab , acura and many more all lie in their official sites !!

what you are saying maybe write for F1 cars but not for Street cars it isn't ...


by the way here is the offical site of continental's offical site ... a known tyre manufactor .... which explains about TCS in street cars ... read it too , its rather small !

http://www.conti-online.com/generator/www/com/en/continental/portal/general/safety/safety_asr_en.html

sorry guys im posting late for this. ..but i had exams ..no time to forums :cry:
anyways ..
i asked my fiend who works in this stuff .. and fix it as well ..
Traction control systems USE brakes ,
here is what the guy explained to me ...

"all systems which every car manufactor mainely use 2 thing to help the car as traction ..
fist there is the engine throttle and lowers the power in the wheels ..
and the second is to pump "il brakes" to a systems called EBD that controlls the brakes..

all of them gets the infomation from the sensors on the wheels 3 or 4 sensors .. which are there always with the ABS system , .. which means that all of the cars which uses those systems must have an ABS ...

i also asked him about F1 cars .. he honestly told me he doesn't really know .. there are no F1 cars in israel :) .... "

so bottom line...
the Traction control systems Use the Engine Throttle .. and Brakes or/and Oil brakes to contol the wheels speed to control the sliding and the car...

those are in simple words ,,, if you wanna know more Read about all the systems in the article i posted above ...

thanks

Who really cares about those things, when i sat in gf's brand new tire bruning Z06, i disabled all that subsystems, they just bother when drivng hard.

Anyway, i didnt read the whole thread, this is just what i think those systems are:

ABC: Stops body roll under serious cornering, allows some degree of body roll to show limits to the driver
TSC: CLUTCH! ore something alike, cut's off throttle when accelerating, but most traction control systems (M3 for example) use a set of small clutches (i think they were seven i dont remember well) to avoid wheel spin under strong acceleration
DSC/ESP: increases stabilty under hard cornering by using individual braking per wheel

just my ideas based on what i read and stuff

none for drifting baby!!!!! none, lol but for road racing on the tougE, its all TCS

First of all i want to say that i hate all these electronic systems (EBD, ESP, TCS, DSC, etc), except of the ABS which i think it's good for the safety of u and your car. Because when i'm driving i wan't to control my car (ex. my uncle went few days ago to test drive the Lancia Thesis 2.0T, when he wanted to overtake a car and he started to getting close to the car that he wanted to overtake, the car (Lancia) started to cutting down because he was to close the car in front. . . where is the pleasure in driving? ? ?) Anyway, you r both right, some companies use TCS with brake assist and some others don't. That's why we have kinds of el. systems (ex. TCS = Traction Control System, ASR = Anti-Spin System). It's the same think but they work with a different way. . . :D