Method for detecting a power loss condition of a reciprocating i

Details Method for detecting a power loss condition of a reciprocating i Method for detecting a power loss condition of a reciprocating i

1998-12-18

2000-07-04

Solis, Erick R.

Measuring and testing

Test stand

For engine

731173, 123436, 701110, G01M 1500

Patent

active

060821876

ABSTRACT:
A method for detecting a power loss condition of an internal combustion engine, the engine having at least one cylinder and a crank shaft, the method including the steps of sensing rotational crank shaft speed for a plurality of designated crank shaft rotational positions over a predetermined number of cycles of rotation, determining an average crank shaft speed fluctuation for each crank shaft position, determining information representative of crank shaft kinetic energy variation due to each firing event in the cylinder, and determining information representative of an average fuel flow rate. Information representative of a power loss for the cylinder is determined as a function of the crank shaft kinetic energy variation, average crank shaft speed and average fuel flow rate and a representative power loss signal is responsively produced.

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