Fuel injection valve for internal combustion engines

Details Fuel injection valve for internal combustion engines Fuel injection valve for internal combustion engines

1984-05-18

1985-07-16

Moy, Magdalen Y. C.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123446, 2395333, 2395334, F02B 300

Patent

active

045289514

ABSTRACT:
The nozzle body has a main nozzle hole and a sub nozzle hole formed therein, the latter being directed at a predetermined angle with the former and smaller in discharge area than the former. The nozzle needle slidably received in the nozzle body is disposed such that its tip is fitted in the main nozzle hole when the nozzle needle is in a seated position thereof, and the tip substantially remains in the main nozzle hole during lifting of the nozzle needle before the nozzle needle lifts through a predetermined stroke, whereby fuel is injected substantially solely through the sub nozzle hole in a first predetermined direction, while the tip of the nozzle needle substantially comes out of the main nozzle hole after the nozzle needle has lifted through the predetermined stroke, whereby fuel is injected mainly through the main nozzle hole in a second predetermined direction different from the first predetermined direction by the above predetermined angle. Control means is responsive to operating conditions of the engine to allow the nozzle needle to lift only through the above predetermined stroke in a low speed/low load region of the engine, while allowing the nozzle needle to lift beyond the predetermined stroke in a high speed/high load region of the engine.

REFERENCES:
patent: 2594681 (1952-04-01), Ricardo et al.
patent: 3559892 (1971-02-01), De Luca
patent: 4022165 (1977-05-01), Eckert et al.
patent: 4171099 (1979-10-01), Kopse et al.
patent: 4403740 (1983-09-01), Eblen et al.

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