×

Hill detection and grade percent estimation logic for an all-wheel drive system

  • US 9,758,167 B1
  • Filed: 03/08/2016
  • Issued: 09/12/2017
  • Est. Priority Date: 03/08/2016
  • Status: Active Grant
First Claim
Patent Images

1. A vehicle driveline system, comprising:

  • a drive unit configured to divide torque between a primary axle and a secondary axle of a vehicle, wherein the drive unit is configured to employ a first torque split for traversing level surfaces below a threshold vehicle speed, wherein a first share of the torque is distributed to the primary axle of the vehicle, and a second share of the torque is distributed to the secondary axle of the vehicle;

    wherein the drive unit is configured to detect a first gradient while the vehicle driveline system is traversing the first gradient using a baseline torque split, the first gradient having a positive grade exceeding a grade threshold, the drive unit configured to modify the second share of torque with respect to the first share of torque in response to the detection of the first gradient while traversing the first gradient below the threshold vehicle speed.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×