Method and device for the intermittent injection of fuel into th

Details Method and device for the intermittent injection of fuel into th Method and device for the intermittent injection of fuel into th

1990-11-14

1992-12-01

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

2395333, 239584, F02M 4706

Patent

active

051673703

ABSTRACT:
The invention relates to a method and a device for intermittently injecting fuel into a combustion chamber of a combustion engine. Efforts to reduce the emission of pollutants and the noise level of Diesel engines are geared towards a control of the heating process. According to the present invention this is achieved by employing the valve needle of the injection valve as a control member for the fuel supply into the pressure chamber of the valve body, whereby the valve needle is actuated to open and close the valve at a high frequency in short intervals. In conjuction with the high fuel pressure, a good droplet size distribution is realized which leads to a homogeneous fuel-air mixture. Dividing the fuel injection process into short intervals by relatively simple design measures results in an extended heating period which positively influences the NO.sub.x contents.

REFERENCES:
patent: 3628736 (1971-12-01), Mowbray
patent: 4005685 (1977-02-01), Kovacs et al.
patent: 4494700 (1985-01-01), Dolenc
patent: 4552310 (1985-11-01), Gaskell
patent: 4635854 (1987-01-01), Ishibashi
patent: 4641784 (1987-02-01), Howes

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