Internal-combustion engines – Two-cycle – Rear compression
Patent
1978-03-27
1980-01-08
Lazarus, Ronald H.
Internal-combustion engines
Two-cycle
Rear compression
123191S, 123 32ST, 123 32SP, 123 32C, 123 32K, F02M 2300
Patent
active
041822846
ABSTRACT:
The auxiliary combustion chamber of a four-cycle stratified-charge piston engine is divided into a primary cavity and a secondary cavity. The primary cavity receives a relatively rich mixture which passes into the secondary cavity, and the main combustion chamber receives a relatively lean mixture. The primary cavity is in communication with a spark plug. A long torch passage connects the primary cavity with the central portion of the main combustion chamber, and one or more short torch passages connect the secondary cavity with a peripheral portion of the main combustion chamber. The purpose is to reduce emission of NO.sub.x without adversely affecting emissions of CO and HC, and to improve fuel economy.
REFERENCES:
patent: 2380615 (1945-07-01), Sheppard
patent: 2804858 (1957-09-01), Schilligen
patent: 3832984 (1974-09-01), Taguchi
patent: 3853097 (1974-10-01), Kume
patent: 3989015 (1976-11-01), Rivere
patent: 4004563 (1977-01-01), Nakamura
patent: 4076000 (1978-02-01), Takao
patent: 4098246 (1978-07-01), Noguchi
patent: 4116191 (1978-09-01), Yanugehara
Fujii Isao
Kogure Hiroshi
Yagi Shizuo
Honda Giken Kogyo Kabushiki Kaisha
Lazarus Ronald H.
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