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Cruise control device and cruise control method

  • US 10,428,937 B2
  • Filed: 03/18/2016
  • Issued: 10/01/2019
  • Est. Priority Date: 03/26/2015
  • Status: Active Grant
First Claim
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1. A travel control device that controls a transmission to perform a downshift from a first transmission gear to a second transmission gear, the travel control device comprising:

  • a road information acquiring section that acquires information about a road in a predetermined section ahead of a vehicle travelling with the first transmission gear;

    a vehicle information acquiring section that acquires information about the vehicle;

    a speed estimating section that estimates, based on the information about the road and the information about the vehicle, a transition of a vehicle speed in the predetermined section in a case where the vehicle travels in the predetermined section with the first transmission gear; and

    a transmission control section that controls the transmission to maintain the first transmission gear without performing a downshift from the first transmission gear to the second transmission gear when a condition where the transition of the vehicle speed estimated by the speed estimating section has a minimum value at a position other than an end of the predetermined section, and the minimum value is larger than a grace speed set at a value smaller than a speed set in advance as a speed at which the downshift is performed is satisfied,wherein the transition of the vehicle speed estimated by the speed estimating section is a transition of the vehicle speed when the vehicle travels in the predetermined section with a maximum accelerator opening.

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