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Front end motor-generator system and hybrid electric vehicle operating method

  • US 10,308,240 B2
  • Filed: 12/14/2016
  • Issued: 06/04/2019
  • Est. Priority Date: 12/14/2016
  • Status: Active Grant
First Claim
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1. A method of retrofitting a vehicle with a hybrid electric system, comprising the acts of:

  • coupling an engine crankshaft damper of an integrated switchable coupling to a crankshaft at a front end of an internal combustion engine opposite a rear engine flywheel end of the engine;

    coupling a first end of a torque transfer gearbox to a pulley of the integrated switchable coupling on a side of the integrated switchable coupling opposite a damper side of the coupling with a selectively-engageable clutch between the pulley and the damper;

    coupling a motor-generator to a second end of the torque transfer gearbox at a location laterally offset from a rotation axis of the integrated switchable coupling;

    coupling an engine accessory drive arranged to drive at least one engine accessory to the pulley of the integrated switchable coupling;

    installing an energy store on the vehicle;

    electrically connecting the motor-generator and the energy store such that electrical energy is transferable between the motor-generator and the energy store; and

    connecting a front end motor-generator controller to the motor-generator, the energy store and a clutch actuator, the front end motor-generator controller being configured to selectively engage and disengage the clutch between the damper and the pulley.

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