Pumps – Three or more cylinders arranged in parallel – radial – or...
Patent
1993-02-01
1995-01-03
Miller, Carl S.
Pumps
Three or more cylinders arranged in parallel, radial, or...
123527, 123450, 417DIG1, F04B 112, F02B 4300
Patent
active
053781147
ABSTRACT:
A gas fuel injection pump including a pump body machined with a plurality of plunger sliding bores, the pressure head of which has side entry ingress passages and individual and separate discharge ports; including a means to actuate the plungers consisting of a rotating cam-spool suitably keyed and locked to the axial driven shaft which will connect by suitable means to the engine crankshaft so as to ensure the precise timing of the injection process. The plungers are sealed by rings of polyamide resin to obviate the leakage of any gas and also to act as sliding bearing surfaces to provide working clearances betwixt plunger and bore. Cam followers are interposed between the plungers and cam-spool to control sidethrust and ensure a satisfactory and maintenance free operation. Overall control of the pump, is defined by the capacity setting of the cam spool which determines the maximum amount of charge available to each engine cylinder: and adjustable stops on the inside wall of the outer casing; adjacent to the throttle body which limits and determines the travel of the throttle ring from idle to maximum power.
REFERENCES:
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patent: 4463736 (1984-08-01), Hayward
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