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US 8,025,046 B2Granted
System and method for facilitating homogeneous charge compression ignition
AssigneeFord Global Technologies, LLC
InventorsThemi Petridis, Lucien Koopmans, Jonas Elfstrand
Life of this patent
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Abstract
A method of transitioning between homogeneous charge compression ignition and spark ignition in a combustion chamber of an engine that is configured for homogeneous charge compression ignition under at least some engine operating conditions and for spark ignition under at least some engine operating conditions, the method comprising heating contents of the combustion chamber with a glow plug prior to transitioning between homogeneous charge compression ignition and spark ignition.
Claims16
A method of operating an engine, comprising:
- operating the engine with Spark Ignition (SI) combustion;
- heating contents of a combustion chamber by activating a glow plug while still continuing to operate a spark plug;
- transitioning from the SI combustion to HCCI combustion while the glow plug remains activated;
- and
- treating exhaust gas from the engine in an emission control device.
2 more elements
A method of operating an engine, comprising:
- operating the engine with Spark Ignition (SI) combustion and without a glow plug activated;
- then
- heating contents of a combustion chamber by activating a glow plug while still continuing to operate a spark plug and prior to transitioning to HCCI combustion;
- transitioning from the SI combustion to HCCI combustion while the glow plug remains activated and then deactivating the glow plug;
- and
- treating exhaust gas from the engine in an emission control device.
3 more elements
Dependencies are inferred from the claim text.