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Efficient vehicle component heating

  • US 8,353,265 B2
  • Filed: 09/12/2008
  • Issued: 01/15/2013
  • Est. Priority Date: 09/12/2008
  • Status: Active Grant
First Claim
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1. A method for controlling the warming of engine oil during engine warm-up from a cold start, the engine having a crankshaft, comprising:

  • selectively driving an oil shear device via engagement and disengagement of a clutch coupled between the crankshaft and the oil shear device during the cold start based on engine oil temperature the engagement after the engine reaches a minimum engine speed after cranking; and

    directing the powertrain lubricants to the oil shear device.

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