Compression-ignition internal combustion engine

Details Compression-ignition internal combustion engine Compression-ignition internal combustion engine

1982-03-29

1984-11-20

Lall, Parshotam S.

Internal-combustion engines

Precombustion and main combustion chambers in series

Precombustion chamber shape is a figure of revolution

123275, 123261, 123259, F02B 1916

Patent

active

044832907

ABSTRACT:
A compression-ignition internal combustion engine has a secondary combustion chamber in communication with the main combustion chamber via an injection passage extending from one end of the secondary chamber, and a fuel injection nozzle for injecting fuel into the secondary chamber from an opposite end thereof. The injection nozzle includes a pair of fuel discharge orifices having axes lying in mutually parallel relationship and are disposed for essentially bisecting the secondary chamber, and the injection passage has a length smaller than the diameter thereof. Thus, the development of any strong rotary currents in the secondary chamber are substantially avoided and high turbulence currents are capable of being developed in the secondary chamber which substantially prevent the injected fuel from precipitating as a coating on the wall of the secondary chamber and which permit the formation of a fuel-air mixture adjacent such wall so as to effect a reduction in hydrocarbons, oxides of nitrogen and other impurities contained in the exhaust from the engine.

REFERENCES:
patent: 2932289 (1960-04-01), Witzky
patent: 3776212 (1973-12-01), Karlowitz
patent: 3980057 (1976-09-01), Sanda et al.
patent: 4040393 (1977-08-01), Decker et al.
patent: 4116234 (1978-09-01), Yanagihara et al.
patent: 4162664 (1979-07-01), Fleming
patent: 4186692 (1980-02-01), Kawamura et al.
patent: 4284043 (1981-08-01), Happel

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