Barrack Technology Limited

Robert W Law

Donald J Remboski, Jr

Jialin Yang

Steven L Plee

Peter G Hartman

Michael T Vincent

An internal combustion engine is provided having a luminosity detector and an arrangement for adjusting the parameters of the engine in response to sensed combustion conditions within the combustion chamber based on particular gain independent parameters of the luminosity signal. The gain independent luminosity parameters can also be used to obtain uniform combustion conditions from cycle to cycle in a given combustion chamber and uniform combustion in the combustion chambers of multi chamber engine.

Method and apparatus for determining combustion conditions and for

An internal combustion engine is provided having a luminosity detector and an arrangement for measuring and controlling combustion phasing based on the location of particular gain independent parameters of the luminosity signal. The gain independent luminosity parameters are used to provide a basis for adjusting various parameters of the engine like fuel injection timing so that at least one gain independent parameter is located at a desired timing point in the combustion cycle to control combustion phasing. Alternatively, these gain independent luminosity parameters are used to determine the time in the combustion cycle at which certain combustion conditions occur. In this embodiment, the determined time of a combustion condition provides a basis for adjusting engine parameters so that the combustion condition occurs at a desired time in the combustion cycle to control combustion phasing.

Method and apparatus for measuring and controlling combustion phasing in

An internal combustion engine having a luminosity detector and an arrangement for measuring certain operating and running parameters such as peak heat release rate in the combustion chamber, NO.sub.x emissions and air/fuel ratio is provided. An arrangement is also disclosed wherein the engine's adjustable parameters can be varied in response to the luminosity signal or in response to the measured operating parameters so as to provide better running of the engine and/or reduce cycle to cycle variation.

Method and apparatus for determining certain operating and running

An internal combustion engine is provided having a luminosity detector and an arrangement for measuring certain parameters and running conditions of the engine such as air/fuel ratio in response to sensed combustion conditions within the combustion chamber based on particular gain independent parameters of the luminosity signal and selected engine parameters such as speed. The gain independent luminosity parameters can also be used in an engine control loop to ajust the various parameters of the engine like air/fuel ratio so as to obtain the desired luminosity characteristics and to obtain better running of the engine.

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Acton, MA, United States of America

Robert W Law