Unit fuel pump-injector with overfuel capability and timing reta

Details Unit fuel pump-injector with overfuel capability and timing reta Unit fuel pump-injector with overfuel capability and timing reta

1979-11-01

1982-05-04

Myhre, Charles J.

Internal-combustion engines

Charge forming device

With fuel pump

123179L, 123503, F02M 5926, F02M 5942

Patent

active

043276946

ABSTRACT:
In fuel injectors of the type which include a rotating plunger (12) having a double helix, or "double scroll", control edges (62, 64), a control edge configuration is disclosed which improves the starting characteristics of certain internal combustion engines. A starting groove (76) and a starting projection (78) are provided in the control edges (62, 64) which simultaneously greatly increase the amount of fuel injected into the combustion space and retard engine timing. Also provided is a control mechanism (92-96) which prevents the injectors from accidently or intentionally rotating to the start position when the engine is running.

REFERENCES:
patent: 2195927 (1940-04-01), Hurst
patent: 2696807 (1954-12-01), Junge
patent: 3902472 (1975-09-01), Baugelin
patent: 4147148 (1979-04-01), Ito
patent: 4160434 (1979-07-01), Daborowski
patent: 4165723 (1979-08-01), Straubel

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