초록 ▼

A fuel injection pump with a control system for regulating the quantity and timing of the delivery of fuel to an associated engine is disclosed. In the control system, three pistons, slidably mounted in parallel bores, are provided. One of the pistons is powered so that it assumes an axial position

A fuel injection pump with a control system for regulating the quantity and timing of the delivery of fuel to an associated engine is disclosed. In the control system, three pistons, slidably mounted in parallel bores, are provided. One of the pistons is powered so that it assumes an axial position indicative of engine speed. A second piston is powered to assume an axial position indicative of the quantity of fuel being delivered by the pump. The first and second pistons are each provided with a cam surface, and cam followers controlled thereby interconnect these pistons with the third piston to control the axial position of the third piston and the timing of delivery of fuel by the pump. A second cam surface on the speed positioned piston is connected to a variable stop which varies the maximum amount of fuel which can be delivered by the pump in accordance with speed and a second cam surface on the fuel quantity positioned piston actuates a feedback control to adjust the amount of fuel delivered by the pump so as to maintain the selected engine speed. Various additional modifying or override controls are provided to selectively modify the operation of the pump in accordance with other parameters, such as manifold air pressure, or during starting, or in case of malfunction.

대표청구항 ▼

A fuel injection pump for delivering measured charges of fuel under high pressure to an associated engine comprising, a source of fuel under pressure, a charge pump connected to receive fuel from said source and pressurize the fuel to high pressure, and a control system for regulating the charges of

A fuel injection pump for delivering measured charges of fuel under high pressure to an associated engine comprising, a source of fuel under pressure, a charge pump connected to receive fuel from said source and pressurize the fuel to high pressure, and a control system for regulating the charges of fuel and their delivery to the engine; said control system including injection timing means for controlling the timing of delivery of fuel by the charge pump, first and second pistons, actuating means for actuating the first piston to a position indicative of engine speed and for actuating second piston independently of the first piston to a position indicative of the quantity of fuel in each charge of fuel delivered by the charge pump, and means interconnecting said pistons with each other and with said injection timing means for controlling the timing of injection according to the positions of the first and second pistons.