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Vehicle engine brake and control system

  • US 6,652,414 B1
  • Filed: 11/26/2001
  • Issued: 11/25/2003
  • Est. Priority Date: 11/26/2001
  • Status: Expired due to Term
First Claim
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1. An engine brake for a vehicle drive system having an internal combustion engine with an exhaust system and a transmission, comprisinga vehicle speed sensor including a speed signal representative of the speed of the vehicle;

  • a transmission gear position sensor including a gear position signal;

    a variable inlet turbine in the exhaust system including a nozzle inlet control, a turbine wheel inlet and a variable inlet nozzle in the turbine wheel inlet of the variable inlet turbine and coupled with the nozzle inlet control;

    a controller in communication with the speed sensor to receive the speed signal and the transmission gear position sensor to receive the gear position signal and coupled with the nozzle inlet control, the controller modulating the nozzle inlet control from a fully open position to a fully closed position and outputting shift commands to the transmission responsive to conditions of the vehicle drive system including the vehicle speed signal, the vehicle drive system further having a torque converter, the transmission being automatic, the controller outputting locking and unlocking signals to the torque converter.

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