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Hybrid vehicle and control method of hybrid vehicle

  • US 9,233,682 B2
  • Filed: 02/10/2011
  • Issued: 01/12/2016
  • Est. Priority Date: 02/10/2011
  • Status: Active Grant
First Claim
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1. A hybrid vehicle comprising:

  • an internal combustion engine, a first rotating electric machine,a power storage device supplying electric power to said first rotating electric machine, a drive shaft rotating in cooperation with a wheel,a power split mechanism mechanically splitting power between a rotational shaft of said internal combustion engine, a rotational shaft of said first rotating electric machine, and said drive shaft, anda control device controlling a rotational speed of said first rotating electric machine such that the rotational speed of said internal combustion engine matches a target rotational speed, said control device calculating a torque command value of said first rotating electric machine such that the electric power discharged from said power storage device does not exceed an upper limit value,when a torque restricting condition including simultaneous operation of an accelerator pedal and a brake pedal as well as a vehicle speed exceeding a threshold value is met, said control device changing said upper limit value to a further restricted value and calculating the torque command value of said first rotating electric machine,and wherein said control device calculates the torque command value of said first rotating electric machine based on a temporarily relaxed value of said further restricted value of said upper limit value when said internal combustion engine is to be started using said first rotating electric machine in a normal operation, and calculates the torque command value of said first rotating electric machine based on said upper limit value, prohibiting usage of a temporarily relaxed value of said upper limit value, when said internal combustion engine is to be started using said first rotating electric machine in a case where said torque restricting condition is met.

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