InTake/DriveByWireThrottle'''

Absolutely required

* 2 pedal position sensors: the most important sensor, since this is the command from the driver.

* 2 break sensors: if there is an inconsistency between the 2 pedal position sensors, the slightest breaking will make the engine enter idle mode (eg.: fuelcut over 1600 RPM. Maybe a similar but not identical idle mode compared to what we have now).

* 1 throttle actuator

Nice to have

* 1..2 TPS: sensing the throttle position is nice

* MAP and MAT

* MAF - especially if EGR is used too. EGR complicates things.

* WideBand

* "service" ECU to watch the big guy

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Pedal position sensor

Multiple throttle pedal position sensors and break sensor signal (available to the ECM of course) are a must => so a very reliable "effective TPPS" can be maintained with some fault tolerancy. With an electronic throttle-plate (an air-valve larger than an idle-valve) with a bad pedal position input only redline fuelcut will stop the RPM-rise or a brick wall. With the break-sense the ECM can enter idle-condition so the overrun fuelcut (much below redline) will make it somewhat safer.

LVDT (Linear Variable Differential Transformer)

[how a LVDT works]

http://www.sensotec.com/lvdt.asp

For fully throttle-by-wire a [pedal-position sensor] is used.

Note: throttle-by-wire can be very dangerous especially for an AutoTrans equipped car if not done with same care and redundancy as aviation control equipments.

WhatEverYouDoYouDoItAtYourOwnRisk

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See also

* InTake/DriveByWireThrottle