acronyms
Posted: Wed Feb 21, 2007 1:49 am
there's been a few posts recently where posters got confused about what system did what so here's some explainations trawled from the net, please feel free to add to the list.
ABS. Anti-Lock Braking system, i think everyone knows this one already
ASR. Anti Skid Control, works in conjunction with ABS, For today’s typical high-torque engines, a form of wheelslip regulation or traction control (ASR) can increase both comfort and safety, particularly on surfaces with differing coefficients of friction or on slippery roads. It makes smooth starts and acceleration possible through all speed ranges without wheel-spin or fishtailing.
ASR only operates in conjunction with the electronic accelerator (fly by wire) and uses components of the anti-lock braking system (ABS). If one wheel suddenly begins to rotate faster than the others (slip), ASR intervenes in the engine management system and reduces power until the wheel stops spinning.
ASR improves traction and can help the driver maintain control even if the limit of adhesion is inadvertently reached while cornering. In addition, it reduces tire wear. ASR activation, is indicated by a flashing light in the instrument cluster; it works with the electronic differential lock (EDL) and it is also part of the electronic stabilization program (ESP). ASR can be deactivated with the ESP switch
ESP. Electronic Stabillity Program, The electronic stabilization program (ESP) increases vehicle control in situations near the vehicle’s limits. It reduces the risk of skidding and helps to keep the vehicle on course. ESP recognizes the course desired and the car’s reactions. Through brake application at individual wheels, it generates one-sided forces which help the car to move in the desired direction. The ESP program uses other driving aids: the anti-lock braking system (ABS), electronic brake-force distribution (EBD), the electronic differential lock (EDL) and the traction control (ASR) system, and is permanently engaged.
Note:
ESP cannot suspend or extend limits imposed by the laws of physics. If a driver exceeds the capabilities of the suspension system and ESP, even ESP cannot prevent loss of control and an accident.
EDL. Electronic Differential Lock. The electronic differential lock (EDL) permits smooth, comfortable starts on road surfaces that do not have a uniform coefficient of friction. If a wheel starts to spin, EDL brakes it as necessary so that power is transmitted to the wheel with the better traction. EDL reduces tire wear and works up to about 40 km/h (quattro® : up to about 80 km/h). EDL is part of the electronic stabilization program (ESP) and the traction control (ASR) .
EBD. Electrionic Brake-force Distribution. Electronic brake-force distribution (EBD) and the anti-lock braking system (ABS), constitute one unit inasmuch as they share a number of the same parts. EBD ensures maximum braking performance at the front and rear wheels and under normal conditions it prevents the rear-end from braking away because of over-braking. The system counteracts “fading” as a result of overheating.
ABS. Anti-Lock Braking system, i think everyone knows this one already
ASR. Anti Skid Control, works in conjunction with ABS, For today’s typical high-torque engines, a form of wheelslip regulation or traction control (ASR) can increase both comfort and safety, particularly on surfaces with differing coefficients of friction or on slippery roads. It makes smooth starts and acceleration possible through all speed ranges without wheel-spin or fishtailing.
ASR only operates in conjunction with the electronic accelerator (fly by wire) and uses components of the anti-lock braking system (ABS). If one wheel suddenly begins to rotate faster than the others (slip), ASR intervenes in the engine management system and reduces power until the wheel stops spinning.
ASR improves traction and can help the driver maintain control even if the limit of adhesion is inadvertently reached while cornering. In addition, it reduces tire wear. ASR activation, is indicated by a flashing light in the instrument cluster; it works with the electronic differential lock (EDL) and it is also part of the electronic stabilization program (ESP). ASR can be deactivated with the ESP switch
ESP. Electronic Stabillity Program, The electronic stabilization program (ESP) increases vehicle control in situations near the vehicle’s limits. It reduces the risk of skidding and helps to keep the vehicle on course. ESP recognizes the course desired and the car’s reactions. Through brake application at individual wheels, it generates one-sided forces which help the car to move in the desired direction. The ESP program uses other driving aids: the anti-lock braking system (ABS), electronic brake-force distribution (EBD), the electronic differential lock (EDL) and the traction control (ASR) system, and is permanently engaged.
Note:
ESP cannot suspend or extend limits imposed by the laws of physics. If a driver exceeds the capabilities of the suspension system and ESP, even ESP cannot prevent loss of control and an accident.
EDL. Electronic Differential Lock. The electronic differential lock (EDL) permits smooth, comfortable starts on road surfaces that do not have a uniform coefficient of friction. If a wheel starts to spin, EDL brakes it as necessary so that power is transmitted to the wheel with the better traction. EDL reduces tire wear and works up to about 40 km/h (quattro® : up to about 80 km/h). EDL is part of the electronic stabilization program (ESP) and the traction control (ASR) .
EBD. Electrionic Brake-force Distribution. Electronic brake-force distribution (EBD) and the anti-lock braking system (ABS), constitute one unit inasmuch as they share a number of the same parts. EBD ensures maximum braking performance at the front and rear wheels and under normal conditions it prevents the rear-end from braking away because of over-braking. The system counteracts “fading” as a result of overheating.
