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Cylinder Charge Temperature Control for an Internal Combustion Engine

  • US 20090013969A1
  • Filed: 07/12/2007
  • Published: 01/15/2009
  • Est. Priority Date: 07/12/2007
  • Status: Active Grant
First Claim
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1. A method of operating an engine including at least one cylinder communicating with an intake manifold via an intake manifold valve and an exhaust manifold via an exhaust manifold valve, the cylinder including a piston arranged within the cylinder, wherein the piston is coupled to a crankshaft of the engine, the method comprising:

  • discontinuing combustion in the cylinder during a plurality of cycles of the engine;

    during said plurality of cycles, operating the exhaust manifold valve and the intake manifold valve to provide a net flow of gases from the exhaust manifold to the intake manifold via the cylinder and adjusting a torque signature provided to the crankshaft during each cycle by the piston responsive to an operating condition.

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