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CONTROL DEVICE OF VEHICLE

  • US 20190285146A1
  • Filed: 03/15/2019
  • Published: 09/19/2019
  • Est. Priority Date: 03/15/2018
  • Status: Active Grant
First Claim
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1. A control device of a vehicle including a multi-speed automatic transmission applied to a vehicle including a multi-speed automatic transmission including a plurality of engagement elements and establishing each of a plurality of gear shift positions by changing a combination of a predetermined number of engagement elements out of the plurality of engagement elements, the control device bringing the multi-speed automatic transmission into a neutral state by releasing one of the predetermined number of engagement elements in coasting running according to a releasing operation of an accelerator pedal and establishing a target gear shift position corresponding to a vehicle running state so that the vehicle is returned from the coasting running when a depressing operation of the accelerator pedal is made to return from the coasting running, the control device comprising:

  • a first engagement control portion selecting a selected gear shift position having a synchronous rotation speed lower than an actual input rotation speed of the multi-speed automatic transmission at the time of return from the coasting running due to the depressing operation of the accelerator pedal and increasing an engagement force of an engagement element establishing the selected gear shift position to immediately increase a drive force of the vehicle; and

    a second engagement control portion engaging the engagement element establishing the target gear shift position when the actual input rotation speed of the multi-speed automatic transmission reaches a determination rotation speed set for determination of attainment to the synchronous rotation speed of the target gear shift position.

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