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Methods and systems for assisted direct start control

  • US 8,141,534 B2
  • Filed: 02/03/2010
  • Issued: 03/27/2012
  • Est. Priority Date: 02/03/2010
  • Status: Active Grant
First Claim
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1. A method of controlling a vehicle system including an engine that is selectively deactivated during engine idle-stop conditions, comprising:

  • during a first condition, engaging an engine starter, without applying a starter current, to the deactivated rotating engine after the engine speed drops below a threshold speed;

    during a second condition, engaging the starter and adjusting a starter motor switch to apply a starter braking torque to the deactivated rotating engine; and

    reducing engine reverse rotation via a one-way clutch in the starter.

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