Spark ignition engine

Details Spark ignition engine Spark ignition engine

2006-08-30

2010-12-28

Kwon, John T (Department: 3747)

Internal-combustion engines

Precombustion and main combustion chambers in series

Precombustion chamber assembly inserted in spark plug hole

C123S1690EB, C313S123000

Reexamination Certificate

active

07856956

ABSTRACT:
A spark ignition engine capable of operating even with a leaner air-fuel mixture to achieve stable ignition and combustion performance. An ignition plug is fitted to a cylinder head through a sleeve, and the ignition electrode of the ignition plug is disposed in a cylinder, facing a single chamber type combustion chamber. The sleeve is formed in a blind cylindrical shape, an auxiliary chamber storing the ignition electrodes of the ignition plug is formed at the bottom part of the sleeve, and a nozzle hole allowing the auxiliary chamber to communicate with the combustion chamber is formed in the bottom part of the sleeve. The bottom part of the sleeve is projected from an explosion surface to the inside of the combustion chamber and the position of ignition by the ignition electrode is set near the explosion surface.

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