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Electronic throttle control (ETC) is an automobile technology which severs the mechanical link between the accelerator pedal and the throttle. Most automobiles already use a throttle position sensor (TPS) to provide input to traction control, antilock brakes, fuel injection, and other systems, but use a bowden cable to directly connect the pedal with the throttle. An ETC-equipped vehicle has no such cable. Instead, the electronic control unit (ECU) determines the required throttle position by calculations from data measured by other sensors such as an accelerator pedal position sensor, engine speed sensor, vehicle speed sensor etc. The electric motor within the ETC is then driven to the required position via a closed-loop control algorithm within the ECU.
The benefits of ETC are largely unnoticed by most drivers because the aim is to make the vehicle power-train characteristics seamlessly consistent irrespective of prevailing conditions, such as engine temperature, altitude, accessory loads etc. The ETC is also working 'Behind the Scenes' to dramatically improve the ease with which the driver can execute gear changes and deal with the dramatic torque changes associated with rapid accelerations and decelerations.
Contrary to popular belief, except in concert with other technologies such as gasoline direct injection, ETC provides only a very limited benefit in areas such as air-fuel ratio control, exhaust emissions and fuel consumption reduction. ETC however makes it much easier to integrate features to the vehicle such as cruise control, traction control, stability control and others that require torque management, since the throttle can be moved irrespective of the position of the driver's accelerator pedal. A criticism of the very early ETC implementations was that they were "overruling" driver decisions. Nowadays, the vast majority of drivers have no idea how much intervention is happening.
Much of the engineering involved with drive-by-wire technologies including ETC deals with failure and fault management. Most ETC systems have sensor and controller redundancy, even as complex as independent microprocessors with independently written software within a control module whose calculations are compared to check for possible errors and faults.
Anti-lock braking (ABS) is a similar safety critical technology, whilst not completely 'by-wire', it has the ability to electronically intervene contrary to the driver's demand. Such technology has recently been extended to other vehicle systems to include features like brake assist and electronic steering control, but these systems are much less common, also requiring careful design to ensure appropriate back-up and fail-safe modes.
Above retrieved from, http://en.wikipedia.org/wiki/Electronic_throttle_control
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A failure in the electronic throttle system.A failure in the electronic throttle system.
Does 2005 dodge ram have electronic throttle control?
The 5.7L Hemi and 5.9L diesel do have electronic throttle.
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The throttle body does not operate by linkage or cable. It operates by wire (electronic).
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It is the indicator for a failure in the electronic throttle control system.It is the indicator for a failure in the electronic throttle control system.
Why is the electronic throttle control light on in your Chrysler 300c?
It is on because the engine computer has detected a malfunction with the electronic throttle control system.
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It stays on when the computer detects a malfunction in the electronic throttle system.
What does P2175 code on Dodge Ram mean?
P2175 Throttle Actuator Ctrl Sys-Low Airflow DetectedThere is a malfunction with the electronic throttle system.P2175 Throttle Actuator Ctrl Sys-Low Airflow DetectedThere is a malfunction with the electronic throttle system.
What does etc on a vehicle mean?
Electronic Throttle Control or Electronic Timing Control
Where is the throttle position sensor on Dodge V8 Hemi?
The throttle position sensor is built into the electronic throttle assembly( throttle body) and is not available seperatly.
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It is the system that actuates the throttle plate electronically. This van does not use a throttle cable.
What does the red lightning bolt mean on a 2005 Chrysler 300?
That light is the failure indicator for the electronic throttle control system. If the light stays on, the engine computer will have stored a trouble code.That is the indicator for a failure in the electronic throttle system.
What does ETA mean in Mercedes?
electronic throttle actuator
