Combustion chamber with a domed auxiliary chamber for a spark-ig

Details Combustion chamber with a domed auxiliary chamber for a spark-ig Combustion chamber with a domed auxiliary chamber for a spark-ig

1986-02-03

1988-01-19

Wolfe, Jr., Willis R.

Internal-combustion engines

Precombustion and main combustion chambers in series

Piston shape complements precombustion chamber discharge

123262, 123286, F02B 1912, F02B 1918

Patent

active

047198842

ABSTRACT:
The present invention relates the technology to enhance the mixing performance of air-fuel mixture in a combustion chamber with a domed precombustion chamber for a spark-ignition engine, and aims to attain the enhanced mixing performance owing to the forcible generation of a multiplicity of small swirls by forcing the air-fuel mixture to flow into the main combustion chamber centripetally from the inside of the cylinder and then to turns three times in a step-like state with being accelerated on the way into the precombustion chamber through the connecting channel at the compression stroke. The main combustion chamber is formed by hollowing the center side portion of the piston head. The piston head is further provided with the connecting channel formed on the annular bank around the main combustion chamber so as to be faced onto by the domed precombustion chamber in the cylinder head and to be stepped up higher than the bottom of the main combustion chamber.

REFERENCES:
patent: 3270721 (1966-09-01), Hideg et al.
patent: 3963003 (1976-06-01), Downs
patent: 4005684 (1977-02-01), Habu
patent: 4207844 (1980-06-01), Schlotterbeck
patent: 4325334 (1982-04-01), Nishida et al.
patent: 4433647 (1984-02-01), Muller

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