Heat-insulating engine with swirl chamber

Details Heat-insulating engine with swirl chamber Heat-insulating engine with swirl chamber

1990-10-01

1991-12-10

Argenbright, Tony M.

Internal-combustion engines

Precombustion and main combustion chambers in series

Precombustion chamber liner or coating

123275, 123300, F02B 1914, F02M 4504

Patent

active

050708333

ABSTRACT:
In a heat-insulating swirl chamber engine, subsidiary fuel is injected from subsidiary nozzles along the inner wall surfaces of swirl chambers of a heat-insulating structure from the second half of an intake stroke to the first half of a compression stroke, so that a lean mixture formed in the swirl chambers does not diffuse into cylinders, deterioration of hydrocarbon components can be prevented and moreover, since the fuel comes into contact with the wall surfaces of the swirl chambers, heat energy can be recovered from the wall surfaces. Next, main fuel is injected from main nozzles into the swirl chambers from the second half of the compression stroke to the first half of an expansion stroke, so that the inside of the swirl chambers becomes fuel-rich due to the lean mixture formed in advance in the swirl chambers and the fuel by the main injection, combustion is effected in the fuel-rich state to restrict the generation of NOx and moreover, cycle efficiency can be improved because the main combustion period is shortened.

REFERENCES:
patent: 4217871 (1980-08-01), Ohashi et al.
patent: 4733641 (1988-03-01), Ishida
"Patent Abstracts of Japan", vol. 10, No. 44, Diesel Engine, Isuzu Jidosha K.K., 2/1986.
"Patent Abstracts of Japan", vol. 6, No. 109, Internal Combustion Engine, Nippon Jidoushiya Kenkyusho, 6/1982.

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