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System and method for controlling fuel injection when an engine is automatically started to decrease an engine startup period

  • US 9,249,750 B2
  • Filed: 11/08/2012
  • Issued: 02/02/2016
  • Est. Priority Date: 11/08/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a stop-start module that stops an engine and thereby interrupts a compression stroke of a cylinder in the engine when a driver depresses a brake pedal while an ignition system is on and the engine is idling, and that restarts the engine when the driver releases the brake pedal;

    a fuel control module that, when the engine is restarted, selectively injects fuel into the cylinder as the cylinder completes the interrupted compression stroke based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center; and

    a spark control module that, when the engine is restarted, selectively generates spark in the cylinder as the cylinder completes the interrupted compression stroke based on the amount of crankshaft rotation.

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