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Driving system with engine starting control

  • US 5,909,720 A
  • Filed: 04/21/1997
  • Issued: 06/08/1999
  • Est. Priority Date: 07/18/1996
  • Status: Expired due to Term
First Claim
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1. A driving system comprising:

  • an internal combustion engine connecting with an output shaft via a damper;

    a motor having a rotating shaft mechanically connected to said output shaft;

    compression ratio varying means for varying an effective compression ratio of said internal combustion engine;

    driving state detecting means for detecting a driving state of said internal combustion engine;

    motor control means for driving and controlling said motor in response to a predetermined driving requirement, in order to motor said internal combustion engine while a fuel supply to said internal combustion engine is stopped; and

    compression ratio regulation means for, when the driving state of said internal combustion engine detected by said driving state detecting means in the process of motoring by said motor control means is within a predetermined range, regulating said compression ratio varying means to make the effective compression ratio of said internal combustion engine lower in the driving state within said predetermined range than that in the driving state out of said predetermined range.

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