초록 ▼

A unitized fuel supply assembly is disclosed including an in-line reciprocating cam driven pump (14) for supplying fuel to an accumulator (12) from which fuel is directed to a plurality of engine cylinders by means of a distributor (16) mounted on the unitized assembly. Dual pump control valves (20)

A unitized fuel supply assembly is disclosed including an in-line reciprocating cam driven pump (14) for supplying fuel to an accumulator (12) from which fuel is directed to a plurality of engine cylinders by means of a distributor (16) mounted on the unitized assembly. Dual pump control valves (20) provide fail safe electronic control over the effective pump displacement. One or more injection control valves mounted on the distributor are provided to control injection timing and quantity. The accumulator (12) contains a labyrinth of interconnected chambers (36) which are shaped and positioned to produce a minimum overall package size while providing for easy manufacture.

대표청구항 ▼

[ We claim:] [1.] An electronically controllable, high pressure fuel pump assembly for supplying fuel at a predetermined pressure through plural fuel injection lines to the corresponding cylinders of a multi-cylinder internal combustion engine, comprising(a) a unitized assembly adapted to be mounted

[ We claim:] [1.] An electronically controllable, high pressure fuel pump assembly for supplying fuel at a predetermined pressure through plural fuel injection lines to the corresponding cylinders of a multi-cylinder internal combustion engine, comprising(a) a unitized assembly adapted to be mounted on the engine, said unitized assembly includingi. pump means for pressurizing fuel above the predetermined pressure, said pump means including a pump housing having mounting means for mounting said unitized assembly on the engine,ii. an accumulator means for accumulating and temporarily storing fuel at high pressure received from said pump means, said accumulator means including an accumulator housing containing at least one accumulator chamber, said accumulator housing being mounted on said pump housing, andiii. a fuel distributor means for enabling sequential periodic fluidic communication between said accumulator chamber and the engine cylinders, said distributor means including a distributor housing being mounted on said pump housing;(b) a first solenoid operated pump control valve for controlling said pump means to maintain a desired pressure of fuel in said accumulator chamber, said first solenoid operated pump control valve by being mounted on said unitized assembly; and(c) a first solenoid operated injection control valve for controlling the timing and quantity of fuel injected into each engine cylinder in response to engine operating conditions, said first solenoid operated injection control valve being mounted on said unitized assembly.