Internal-combustion engines – Precombustion and main combustion chambers in series – Two-cycle
Patent
1991-11-26
1993-03-23
Cross, E. Rollins
Internal-combustion engines
Precombustion and main combustion chambers in series
Two-cycle
123289, 123 65VD, F02B 1904
Patent
active
051954869
ABSTRACT:
A two stroke diesel engine having a cavity in the cylinder head facing the combustion chamber, an intake valve and exhaust valve, a fuel injector, and a projection formed on the piston head. The intake valves and fuel injector are pointing toward the cavity while the exhaust valve is pointing toward the combustion chamber. The projection enters the cavity in the vicinity of the top dead center of the piston movement and separates it from the combustion chamber. Due to the loop effect of fresh gas flowing from the intake valve into the combustion chamber via the cavity, burnt gas is swept out of the chamber effectively, and due to the energy of combustion of fuel and air which ignited in the closed cavity, combustion rapidly spreads throughout the combustion chamber as the piston descends so that air is utilized efficiently.
REFERENCES:
patent: 4070999 (1978-01-01), Matsuno
patent: 4146004 (1979-03-01), Dubois
patent: 4258680 (1981-03-01), Eckert
patent: 4267806 (1981-05-01), Kanda et al.
patent: 4616605 (1986-10-01), Kline
patent: 4732117 (1988-03-01), Tanahashi et al.
patent: 5009207 (1991-04-01), Merritt
Cross E. Rollins
Macy M.
Nissan Motor Co,. Ltd.
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