Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1991-09-10
1993-04-13
Miller, Carl S.
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
123508, 123506, F02B 4708, F02M 3704
Patent
active
052013006
ABSTRACT:
In a diesel engine having a combustion chamber formed by a cylinder and piston where fuel is injected into the chamber directly, and provided with a device whereby part of the exhaust gas is recycled into the air intake depending on the running condition of the engine, a fuel injection valve is fitted to the head of the cylinder parallel to or coaxial with the cylinder axis and near the center of the combustion chamber. The valve lifts in two stages according to the fuel pressure so as to spray fuel evenly into the chamber and thus promote mixing of fuel with air. Fuel injection pressure is increased by a fuel pump which supplies high pressure fuel to the injection valve in synchronization with the engine revolution, and the residual pressure in the pipe which leads fuel from the fuel injection pump to the fuel injection valve is kept approximately constant by a pressure equalizing valve so as to avoid a secondary fuel injection. As a result, combustion is improved when exhaust gas is recirculated, and the emission of both NOx and smoke is reduced.
REFERENCES:
patent: 4141329 (1979-02-01), Pompei
patent: 4187825 (1980-02-01), Loyd
patent: 4467767 (1984-08-01), Kampichler
patent: 4648369 (1987-03-01), Wannenwetsch
patent: 4651779 (1987-03-01), Filippi
patent: 4721075 (1988-01-01), Kasai
patent: 4727848 (1988-03-01), Stumpp
patent: 4836170 (1989-06-01), Hafele
patent: 4836171 (1989-06-01), Melde-Tuczai
patent: 5115789 (1992-05-01), Aoyama
Miller Carl S.
Nissan Motor Co,. Ltd.
LandOfFree
Direct injection diesel engine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Direct injection diesel engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct injection diesel engine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1148963