Distributor-type fuel injection pump with preliminary injection

Details Distributor-type fuel injection pump with preliminary injection Distributor-type fuel injection pump with preliminary injection

1985-06-13

1987-01-13

Wolfe, Jr., Willis R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123502, F02M 5920, F02B 300

Patent

active

046355995

ABSTRACT:
A distributor-type fuel injection pump for internal combustion engines includes an injection timing control device operatively connecting to a plunger and actuatable in response to the pressure within a fuel chamber in the pump housing, the plunger having a main discharge port and a preliminary discharge port for a preliminary fuel injection in advance of the next following main injection. The control device has a first member actuatable in response to the pressure within the fuel chamber for effecting a preliminary fuel injection when the pressure is at less than a predetermined value, and has a second member actuatable in response to the pressure with the fuel chamber for preventing the preliminary fuel injection when the pressure is above the predetermined value. Preferably, the predetermined pressure value corresponds to an idling speed of the engine.

REFERENCES:
patent: 4041919 (1977-08-01), Bonin
patent: 4262645 (1981-04-01), Kobayashi et al.
patent: 4351295 (1982-09-01), Bassoli et al.
patent: 4501252 (1985-02-01), Stumpp et al.
patent: 4508489 (1985-04-01), Howes
patent: 4522174 (1985-06-01), Babitzka et al.

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