Internal-combustion engines – Combustion chamber means having fuel injection only – Air entering combustion chamber through plural inlets
Patent
1989-02-13
1990-07-31
Nelli, Raymond A.
Internal-combustion engines
Combustion chamber means having fuel injection only
Air entering combustion chamber through plural inlets
123308, F02B 1500
Patent
active
049442660
ABSTRACT:
A direct-injection diesel engine comprising a cylinder block having a cylinder in which a piston is slidably received, a cylinder head connected to an upper surface of the cylinder block, a fuel injector nozzle mounted on the cylinder head to directly inject fuel into a combustion chamber defined between the piston and the cylinder head, and first and second independent intake ports provided in the cylinder head for introducing intake gas into the combustion chamber. An intake controller is mounted in the second intake port for bringing the second intake port into a controlled intake gas flow state in a region of low speed operation of the engine and into a normal state in a region of high speed operation of the engine. Each of the first and second intake ports are formed helically in the same direction to produce swirls in the same direction in intake gases introduced respectively through the intake ports into the combustion chamber.
REFERENCES:
patent: 3240190 (1966-03-01), Christian et al.
patent: 4270500 (1981-06-01), Nakagawa et al.
patent: 4354463 (1982-10-01), Otani et al.
patent: 4671233 (1987-06-01), Iwashita et al.
patent: 4688532 (1987-08-01), Hasegawa
patent: 4702207 (1987-10-01), Hatamura et al.
Hasegawa Shumpei
Mishima Yoshibumi
Takahashi Yasushi
Honda Giken Kogyo Kabushiki Kaisha
Nelli Raymond A.
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