Internal-combustion engines – Combustion chamber means combined with air-fuel mixture... – Stratification in combustion chamber
Reexamination Certificate
2006-03-07
2006-03-07
Kwon, John T. (Department: 3747)
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
Stratification in combustion chamber
C123S305000
Reexamination Certificate
active
07007669
ABSTRACT:
A method and apparatus for operating an internal combustion engine is provided. The method comprises the steps of introducing a primary fuel into a main combustion chamber of the engine, introducing a pilot fuel into the main combustion chamber of the engine, determining an operating load of the engine, determining a desired spark plug ignition timing based on the engine operating load, and igniting the primary fuel and pilot fuel with a spark plug at the desired spark plug ignition timing. The method is characterized in that the octane number of the pilot fuel is lower than the octane number of the primary fuel.
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SAE 9935761, “A New Combustion Concept for Internal Combustion Engines”, pp 413-418, P. Higelin, C. Robinet, C. Mounaim-Rouselle, O. Pajot, and B. Moreau, Laboratoire de Mecanique et Energetique-Universite d'Orleans.
Bailey Brett M.
Fiveland Scott B.
Gong Weidong
Willi Martin L.
Caterpillar Inc.
Kwon John T.
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