×

Starter system for automatically turning off and restarting a motor vehicle engine

  • US 4,959,962 A
  • Filed: 02/07/1990
  • Issued: 10/02/1990
  • Est. Priority Date: 08/27/1987
  • Status: Expired due to Fees
First Claim
Patent Images

1. The combination comprising a hydromechanical power transmission connected to the output shaft of an engine of a motor vehicle for delivering power from the engine to drive the vehicle, and a starter system connected to said transmission to start the engine, said transmission including a mechanical drive part connected to the output shaft of the engine and a hydraulic part including two hydrostatic machines drivingly connected to one another and to said mechanical drive part, said starter system comprising a hydraulic starter accumulator connected to said two hydrostatic machines for being supplied with pressure fluid from said hydrostatic machines during drive of the engine, and for delivering the pressure fluid back to said hydraulic part of the transmission when the engine is halted to start the engine, said hydraulic starter accumulator having a filling capacity to provide a power output to start the engine at least once, means for preventing motion of the vehicle at least in the reverse direction during starting of the engine, controller means connected to said hydraulic starter accumulator, said engine and said hydromechanical power transmission for acting during halted and operational states of the vehicle for(a) turning off the engine,(b) starting the engine by supplying the pressure fluid in the hydraulic starter accumulator to said hydraulic part to drive the output shaft via said transmission, and(c) supplying the starter accumulator with pressure fluid from the transmission during braking of the vehicle, andauxiliary means connected to said starter accumulator for pressurizing the starter accumulator to enable starting the engine in the event that the accumulator is insufficiently pressurized by the transmission during braking of the vehicle.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×