초록 ▼

Disclosed herein is a fuel metering pump for delivering fuel to rocket or jet engine having a motor driven face cam and a pair of reciprocating rolling diaphragm pump mechanisms movable through opposite suction and pump strokes. The face cam has a ramping cam surface that extends radially more than

Disclosed herein is a fuel metering pump for delivering fuel to rocket or jet engine having a motor driven face cam and a pair of reciprocating rolling diaphragm pump mechanisms movable through opposite suction and pump strokes. The face cam has a ramping cam surface that extends radially more than 180 degrees. This permits both pump mechanisms to be simultaneously in the pump stroke for a portion of the pump stroke so that they alternately reciprocate through the suction and pump strokes at essentially a constant velocity, thereby providing an essentially non-pulsating flow of fuel to the engine.

대표청구항 ▼

1. A system for supplying combustible fuel to a fuel consuming device, the system comprising:a combustible fuel source; a fuel metering pump having a housing defining an outlet port and an inlet port, the inlet port being in communication with the fuel source and leading to a pair of pump chambers,

1. A system for supplying combustible fuel to a fuel consuming device, the system comprising:a combustible fuel source; a fuel metering pump having a housing defining an outlet port and an inlet port, the inlet port being in communication with the fuel source and leading to a pair of pump chambers, each pump chamber being sealed by a diaphragm to which is connected a pumping member biased at one end to a but a motor driven face cam operating to alternately reciprocate the pumping members through pump and suction strokes within the pump chambers; and a fuel line leading from the outlet port to the fuel consuming device; the fuel metering pump further comprising means for fuel metering and pumping substantially constant pressure fuel to the fuel consuming device without the need for an accumulator metering valve.