Method of deactivating selected fuel injectors of an internal combustion engine for improved idle stability
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United States of America Patent
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Feb 24, 2004
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N/A
app pub date -
Feb 25, 2003
filing date -
Feb 25, 2003
priority date (Note) -
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Abstract
An idle stability control for a fuel injected internal combustion engine deactivates selected fuel injectors after specified idle conditions have been met for a predetermined period of time, and thereafter until the conditions are no longer met. The engine spark timing is temporarily modified on each transition to and from the control to reduce operator perception of the injector deactivation and reactivation. Additionally, the injector deactivation pattern is periodically adjusted following an overlap period during which all of the injectors are enabled.
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