×

Hybrid powertrain diagnostics

  • US 8,392,057 B2
  • Filed: 12/21/2009
  • Issued: 03/05/2013
  • Est. Priority Date: 12/21/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • operating a hybrid powertrain system including an engine and a motor/generator;

    determining a first net torque of the engine based upon a model;

    sensing an electrical characteristic of the motor/generator;

    determining a second net torque of the engine based upon the electrical characteristic of the motor/generator; and

    diagnosing the system based upon the first net torque and the second net torque;

    wherein the determining the first net torque and the determining the second net torque utilize at least in part different sources of information.

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