Internal-combustion engine having a pre-combustion chamber

Details Internal-combustion engine having a pre-combustion chamber Internal-combustion engine having a pre-combustion chamber

1995-10-31

1998-02-10

Nelli, Raymond A.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having combustible mixture forming means

F02F 326

Patent

active

057157871

ABSTRACT:
To provide an improved heat insulating structure in which the movement of air in the air space of a heat insulating layer is permitted as small as possible thus giving a higher heat shielding effect. A heat insulating layer of an air space is provided between a center tube and an external heat shielding tube in a fuel injection nozzle and a carbon getter is disposed at an interface between the heat insulating layer and a combustion chamber. When a combustion gas moves into the carbon getter, its carbon components are trapped and accumulated thus blocking between the heat insulating layer and the combustion chamber. As the heat insulating layer is isolated, its inside air remains stagnate increasing the heat shielding effect. This srtacture has been appied to the pre-combustion chamber.

REFERENCES:
patent: 4667630 (1987-05-01), Sasaki
patent: 4669433 (1987-06-01), Hoppie et al.
patent: 5483933 (1996-01-01), Kawamura
Patent Abstracts of Japan, vol. 18, No. 660 (M-1722), Dec. 14, 1994 & JP-A-06 257441 (Isuzu), Sep. 13, 1994.
Patent Abstracts of Japan, vol. 950, No. 002 & JP-A-07 042562 (Isuzu Ceramics Kenkyusho:KK), Feb. 10, 1995. JP-A-61 093227 (Mazda), May 12, 1986.
Patent Abstracts of Japan, vol. 11, No. 105 (M-577), Apr. 3, 1987 & JP-A-61 252826 (Mazda), Nov. 10, 1986.
Patent Abstracts of Japan, vol. 11, No. 160 (M-592), May 23, 1987 & JP-A-61 294119 (NGK), Dec. 24, 1986.

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