Patent ID: 8521403

Claim:
An improved fail safe device for disabling a vehicle engine fuel delivery system so as to prohibit unintended acceleration or uncontrolled speed in a vehicle the fuel delivery system comprising a) an Electronic Control Module (“ECM”), said ECM receiving electronic inputs from the vehicle components comprising the vehicle's accelerator pedal through a pedal input sensor, said ECM electrically connected to an engine fuel delivery control module (EFCM) to provide drive-by-wire electronic throttle control of the vehicle's motor, the EFCM having a negative side and a positive side, b) a throttle position sensor (“TPS”) sensing the engine throttle plate position and transmitting said position information to the ECM as an electrical signal correlated to said throttle plate position, the TPS electrical signal comprising a non-zero signal voltage varying from about 0.5 vdc at idle (Idle) to about 4.80 vdc at wide open throttle, or c) fuel feed rate sensor (FFRS) sensing the fuel feed rate and transmitting said information to the ECM as an electrical signal correlated to said feed rate, the FFRS electrical signal comprising a non-zero signal voltage varying from about 0.5 vdc at idle to about 4.80 vdc at maximum fuel feed rate the improvement comprising an electronic throttle disconnect or fuel feed reduction device electrically connected between a brake pedal and a fuel feed mechanism such that, following activation, depressing the brake pedal opens the electrical circuit on the negative side or positive side of the EFCM to place the vehicle in an idle position.