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Method and apparatus for starting an internal combustion engine

  • US 8,474,429 B2
  • Filed: 12/11/2007
  • Issued: 07/02/2013
  • Est. Priority Date: 12/11/2007
  • Status: Active Grant
First Claim
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1. A method for starting an internal combustion engine having a motor mechanically coupled to the engine, the engine having at least one moveable element mounted in a chamber, the moveable element being operable to cause a changing compression condition within the chamber as the moveable element moves from a low compression condition through a compression stroke to a peak compression condition, the engine being mechanically coupled to a shaft for generating mechanical power, the method comprising:

  • calculating a reference positioning torque;

    causing the motor to supply the reference positioning torque to the engine to move the at least one moveable element in a direction opposite to a direction of the compression stroke into a starting position where the positioning torque is opposed by a compression condition due to a firing stroke of the engine; and

    causing the motor to supply a starting torque to the engine.

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