Internal-combustion engines – Precombustion and main combustion chambers in series – Having combustible mixture forming means
Patent
1983-12-09
1985-08-06
Nelli, Raymond A.
Internal-combustion engines
Precombustion and main combustion chambers in series
Having combustible mixture forming means
123281, F01L 300, F02B 304
Patent
active
045328986
ABSTRACT:
In a fuel injection type internal combustion engine including a cylinder body with a cylinder chamber, a cylinder head, a piston adapted to be reciprocated within the cylinder chamber, an injection nozzle having its central axis inclined with respect to the top of the piston and its injection port offset from the center of the cylinder chamber, and a combustion chamber cavity opened in the top of the piston, an auxiliary cavity defined by a notched wall having complicatedly cut surfaces is formed in the opening portion of the combustion chamber cavity. The notched wall is formed in a manner to follow the conical surface of a cone, in response to the piston travel, the cone having as its apex a point located upstream of the injection port, as its center the central axis of the injection nozzle, and as its apex angle the maximum spray diverging angle of the injection nozzle. With this structure, the collision of injected fuel against the combustion chamber cavity wall is prevented while minimizing the reduction in the compression ratio of the engine.
REFERENCES:
patent: 4015577 (1977-04-01), Elsbett et al.
patent: 4235202 (1980-11-01), Buddenhagen
patent: 4278057 (1981-07-01), Urlaub et al.
patent: 4428340 (1984-01-01), Nikly
Hayakawa Kizo
Mori Nobuyuki
Nakashima Kazumi
Watanabe Yoshio
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Kabushiki Kaisha Toyota Chuo Kenkyusho
Nelli Raymond A.
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