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Engine timing control with intake air pressure sensor

  • US 6,804,997 B1
  • Filed: 08/14/2003
  • Issued: 10/19/2004
  • Est. Priority Date: 08/14/2003
  • Status: Active Grant
First Claim
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1. An engine control apparatus for determining engine position from intake air pressure fluctuations, comprising;

  • (a) an engine having at least one cylinder, a piston in said cylinder, a crankshaft connected to said piston, said piston being adapted to reciprocate between top dead center position and bottom dead center position defining a combustion chamber, an intake valve controlling the induction of an air mass into said combustion chamber with predetermined timing related to said crankshaft'"'"'s angular position, said engine air induction system having its chamber contiguous with said valve and said engine combustion chamber, a pressure sensing element in communication with said air induction chamber;

    (b) a pressure sensor means for developing periodic sensor voltage timing pulses, the cycle time between timing pulses being an indication of engine crankshaft speed, and the pulse timing being an indication of a particular crankshaft degree of angular position;

    (c) a means for measuring in real-time, cycle time and crankshaft position.

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