Internal-combustion engines – Combustion chamber means having fuel injection only – Air entering combustion chamber through plural inlets
Patent
1991-08-14
1992-09-29
Cross, E. Rollins
Internal-combustion engines
Combustion chamber means having fuel injection only
Air entering combustion chamber through plural inlets
123308, 123432, F02M 3510, F02D 910
Patent
active
051506777
ABSTRACT:
In a direct injection diesel engine provided with a fuel injector facing the center of the combustion chamber, a fuel injection pump supplying high pressure fuel to said injector, two air intake ports and two exhaust ports disposed in apposition to one another around said injector as center, air intake valves and exhaust valves which open and close these ports in synchronization with the engine, a swirl control valve installed in one air intake port, and a control means which adjusts the aperture of said control valve depending on the fuel injection pressure, the swirl control valve shuts when the fuel injection pressure is low so as to enhance the swirl of intake air. This promotes conversion of fuel to fine droplets, uses air more efficiently in the combustion and thereby reduces smoke generation. On the other hand, when the injection pressure is high, the swirl control valve opens which increases the charging efficiency and makes it possible to withdraw high power from the engine.
REFERENCES:
patent: 3395690 (1968-08-01), Riley
patent: 3832983 (1974-09-01), Nickly
patent: 4240381 (1980-12-01), Lowther
patent: 4688532 (1987-08-01), Hasegawa
patent: 4702203 (1987-10-01), Ohmi
patent: 4902210 (1990-03-01), Shimada et al.
patent: 4944266 (1990-07-01), Hasegawa
patent: 4972814 (1990-11-01), Natsuki
Cross E. Rollins
Nissan Motor Co,. Ltd.
Solis Erick
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