Internal-combustion engines – Precombustion and main combustion chambers in series – Piston shape complements precombustion chamber discharge
Patent
1989-03-08
1990-02-06
Nelli, Raymond A.
Internal-combustion engines
Precombustion and main combustion chambers in series
Piston shape complements precombustion chamber discharge
123260, F02B 1700
Patent
active
048981362
ABSTRACT:
The subject of the invention is a mixture-compressing spark-ignition internal-combustion engine with a main combustion chamber and an auxiliary combustion chamber in the cylinder head. The auxiliary combustion chamber has a spark plug and is connected to the main combustion chamber by an overflow bore. The overflow bore is aligned with the piston crown in such a way that an emerging ignition jet aims at a surface region of the piston crown. According to the invention, the overflow bore is arranged concentrically with respect to the longitudinal center axis of the cylinder and the surface region of the piston crown is designed as an impact area lying opposite the bore and running orthogonally with respect to the jet direction.
REFERENCES:
patent: 1605381 (1926-11-01), Wirrer
patent: 2256776 (1941-09-01), Kammor
patent: 2511992 (1950-01-01), Quick
patent: 3057334 (1962-10-01), Bailey
patent: 3220389 (1965-11-01), Van Rinsum et al.
patent: 4203393 (1980-05-01), Giardini
patent: 4487177 (1984-12-01), Ishikawa
Happel Robert
Lutz Wolfgang
Daimler-Benz AG
Nelli Raymond A.
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