Control system and method for improving cold startability of spark ignition direct injection (SIDI) engines
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United States of America Patent
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Apr 30, 2013
Grant Date -
Nov 24, 2011
app pub date -
May 18, 2010
filing date -
May 18, 2010
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Abstract
A control system includes an engine enable module and a fuel control module. The engine enable module determines whether predetermined operating conditions of a spark ignition direct injection (SIDI) engine are satisfied and enables an engine prime mode when the predetermined operating conditions are satisfied. The fuel control module controls a fuel injector to deliver a prime pulse to a cylinder of the SIDI engine when the engine prime mode is enabled. The fuel injector delivers the prime pulse by opening for a pulse width to inject fuel directly into the cylinder when the SIDI engine is stopped.
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