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Control method for a vehicle having an engine and an accessory device

  • US 7,017,360 B2
  • Filed: 07/22/2003
  • Issued: 03/28/2006
  • Est. Priority Date: 01/13/2000
  • Status: Expired due to Term
First Claim
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1. A control method for use with an internal combustion engine and an accessory device, the engine and device coupled to a vehicle, the method comprising:

  • determining when the device is cycling between an engaged state where the engine is coupled to the device and a disengaged state where the engine is de-coupled from the device;

    engaging the device based at least on an operating condition when the device is disengaged; and

    wherein said engine operating condition is when a speed ratio across a torque converter coupled to the engine is less than 1.

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