Method and apparatus for engine control during auto-ignition...

Details Method and apparatus for engine control during auto-ignition... Method and apparatus for engine control during auto-ignition...

2007-07-27

2008-08-12

Vo, Hieu T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S295000

Reexamination Certificate

active

07412322

ABSTRACT:
The invention comprises an engine system that is selectively operative in an auto-ignition combustion mode. A control module monitors engine operating states and control engine operation. A control subsystem controls engine operation based upon the monitored engine operating states. The control subsystem operates the engine in the auto-ignition combustion mode, and determines an effective temperature of the cylinder structure of the internal combustion engine based upon the engine operating conditions. An engine operating point is determined. A feed-forward control scheme is executed based upon the effective temperature of the cylinder structure and the engine operating point. The effective temperature of the cylinder structure is determined by monitoring engine power for an elapsed period of time.

REFERENCES:
patent: 7263968 (2007-09-01), Cairns et al.
patent: 2007/0272202 (2007-11-01), Kuo et al.

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