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Drive control device for hybrid vehicle

  • US 9,545,917 B2
  • Filed: 03/21/2012
  • Issued: 01/17/2017
  • Est. Priority Date: 03/21/2012
  • Status: Active Grant
First Claim
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1. A drive control device for a hybrid vehicle provided with:

  • a differential device which includes a first differential mechanism and a second differential mechanism, an engine, a first electric motor, a second electric motor and an output rotary member, wherein the differential device includes four rotary elements, wherein the engine, the first electric motor, the second electric motor and the output rotary member are connected to said respective four rotary elements, and wherein one of said four rotary elements is constituted by a rotary component of said first differential mechanism and a rotary component of said second differential mechanism which are selectively connected to each other through a clutch, and one of the rotary components of said first and second differential mechanisms which are selectively connected to each other through said clutch is selectively fixed to a stationary member through a brake, said drive control device comprising;

    a brake engagement control portion configured to place said brake in an engaged state upon starting of said engine, andan electric motor operation control portion configured to operate said first electric motor to raise a speed of a rotary motion of said engine, for starting of said engine, and to operate said second electric motor to reduce a reaction force acting on said output rotary member which is generated during starting of said engine.

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