Method of calculating the amount of work done by an internal...

Details Method of calculating the amount of work done by an internal... Method of calculating the amount of work done by an internal...

2008-07-08

2008-07-08

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

Reexamination Certificate

active

07398150

ABSTRACT:
A method of calculating the amount of work done by an internal combustion engine, which is capable of calculating a work amount parameter indicative of the amount of work done with accuracy while compensating for a phase delay in in-cylinder pressure data caused e.g. by a filtering process performed thereon. The method calculates the work amount parameter Pmiindicative of the amount of work done by the engine3including a combustion chamber3b, as follows: Pressure in the combustion chamber3bis detected to obtain in-cylinder pressure data P indicative of the detected pressure. Volume data V indicative of a state of change in volume of the combustion chamber3bis obtained. The obtained volume data V is subjected to a first predetermined filtering process. The work amount parameter Pmiis calculated based on the detected in-cylinder pressure data P, and the volume data filtered value VF obtained by subjecting the volume data V to the first filtering process.

REFERENCES:
patent: 3815410 (1974-06-01), Brown et al.
patent: 4598680 (1986-07-01), Lanfer
patent: 5623412 (1997-04-01), Masson et al.
patent: 0 742 359 (1996-11-01), None
patent: 2001-263153 (2001-09-01), None

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