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US 5,806,474 AGranted
Self injection system
OwnerMarius A. Paul, Ana Paulinventors
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OwnerMarius A. Paul, Ana Paulinventors
Estimating the term…
A fuel injection system for an engine having a combustion chamber, the injection system having at least one fuel injector with a hydraulically operated actuator for amplifying the pressure of fuel injected from the injector into the combustion chamber, the hydraulic actuator communicating with a hydraulic pulse pump having a slide piston displaced by the pressure of compression and combustion gases within the combustion chamber, the fuel pressure having an amplified pressure profile paralleling the developed pressure profile of gases compressed and combusted in the combustion chamber, and in an alternate embodiment the pulse pump delivers high pressure hydraulic fluid to a common rail for use by multiple injectors and including a further embodiment where the high pressure fluid in the common rail is used as the motive fluid for actuating the engine combustion chamber valves.
In an engine having a combustion chamber, a piston and at least one displaceable gas passage valve for controlled passage of gases to or from the combustion chamber, the improvement comprising an electro-hydraulic actuating system for the gas passage valve, wherein the engine has a hydraulic pulse pump having a pump cylinder with a slide piston dividing the pump cylinder into a first chamber having a passage in communication with the combustion chamber and a second chamber having a passage filled with a motive fluid, the passage being in communication with a rail means for accumulating pressurized motive fluid pumped by the pulse pump on displacement of the slide piston by the pressure of gasses in the combustion chamber, and electronically-controlled, hydraulic actuating means for displacing the displaceable gas passage valve by the motive fluid.
Dependencies are inferred from the claim text.