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Control system and method to inhibit automatic transmission downshifting during trailer sway

  • US 8,060,288 B2
  • Filed: 03/20/2009
  • Issued: 11/15/2011
  • Est. Priority Date: 03/20/2009
  • Status: Active Grant
First Claim
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1. A control system for a vehicle that is towing a trailer comprising:

  • a lateral acceleration sensor coupled to the vehicle for determining a lateral acceleration of the vehicle caused by the trailer swaying and generating a lateral acceleration signal based on the lateral acceleration of the vehicle; and

    a transmission controller for receiving the lateral acceleration signal from the lateral acceleration sensor, comparing the lateral acceleration signal to a threshold, and prohibiting a gear switch signal from being transmitted to a transmission of the vehicle when the lateral acceleration signal exceeds the threshold.

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