Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1977-08-26

1978-11-14

Myhre, Charles J.

Internal-combustion engines

Starting device

For airplane

417462, 123140MP, 123139AL, 123140R, 123140FG, F02D 104

Patent

active

041251040

ABSTRACT:
A fuel injection pump is driven by the engine via a drive shaft that also rotates a cam ring. The cam ring reciprocates radial pistons which deliver fuel under high pressure to fuel lines located around an axially sliding distribution member. The amount of fuel delivered is determined in part by the timing of the opening of a pressure relief channel which is opened by a sliding annular ring surrounding the distribution member. The position of this ring and hence the fuel quantity delivered is adjusted by the equilibrium between spring forces and fluid pressure from a regulating valve. A separate pressure control valve adjusts the pressure gradient across an arbitrarily settable throttle which also affects the regulating pressure. Separate mechanisms adjust an engine starting excess quantity and a fuel bypass which is thermostatically controlled to maintain the pump operating temperature within prescribed limits.

REFERENCES:
patent: 2828727 (1958-04-01), Fischer
patent: 3363568 (1968-01-01), Evans
patent: 3489093 (1970-01-01), Thornber
patent: 3650259 (1972-03-01), Garnier
patent: 3676023 (1972-07-01), Andrusenko et al.
patent: 3695244 (1972-10-01), Vauille
patent: 3924593 (1975-12-01), Pagdin
patent: 4050437 (1977-09-01), Hollett et al.
patent: 4067304 (1978-06-01), Potter

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