Abstract: A system for delivering cryogenic fuels to an engine uses a plurality of cryogenic pumps operating in offset phases to deliver high pressure fuel with a minimum of pressure ripple. The cryogenic pumps use engine oil and a hydraulic pump for actuation via electrohydraulic valves. A charge pump maintains pressure in the feed line so that the cryogenic pumps can be located away from the cryogenic fuel tank. A control strategy for the hydraulic pumps allows output pressure and flow rate to be closely controlled and regulated.

Abstract: A carpule and its method of manufacture, the carpule tubular body composed of a polypropylene or similar polymer, the tubular body being sealed at one end by a seal of a thermoplastic vulcanizate (TPV) or similar polymer, the seal having been injection molded in contact with the tubular body prior to full curing of the material composing the tubular body, such that a chemical fusion bond is created between the seal and the tubular body.

Abstract: A carpule and its method of manufacture, the carpule tubular body composed of a polypropylene or similar polymer, the tubular body being sealed at one end by a seal of a thermoplastic vulcanizate (TPV) or similar polymer, the seal having been injection molded in contact with the tubular body prior to full curing of the material composing the tubular body, such that a chemical fusion bond is created between the seal and the tubular body.

Abstract: A carpule and its method of manufacture, the carpule tubular body composed of a polypropylene or similar polymer, the tubular body being sealed at one end by a seal of a thermoplastic vulcanizate (TPV) or similar polymer, the seal having been injection molded in contact with the tubular body prior to full curing of the material composing the tubular body, such that a chemical fusion bond is created between the seal and the tubular body.

Abstract: An engine assembly includes a valve assembly which selectively enables exhaust gas to be recirculated from an engine exhaust outlet to an engine air inlet. The valve assembly is positionable between a first valve position and a second valve position. The engine exhaust outlet is isolated from the engine air inlet when the valve assembly is positioned in the first valve position. The engine exhaust outlet is in fluid communication with the engine air inlet when the valve assembly is positioned in the second valve position. Operational pressure generated by the injector oil pump of the engine assembly is used to move the valve assembly from the first valve position to the second valve position. A method of controlling a flow of engine exhaust in an internal combustion engine is also disclosed.

Abstract: Conventional direct-injection internal combustion engines having a fuel injector with multiple fuel spray orifices will not completely ignite and burn relatively lower-cetane-number alternative fuels such as 100 percent methanol or ethanol. That is because the fuel spray injection pattern, per se, usually cannot carry or propagate a flame to all the injected fuel which is typically made up of individual fuel streams which are separated by sectors of fuel-deficient intake air. The present fuel combustion system (10) includes a multiple-orifice fuel injector (22), a baffle (138) having a concave surface (146), and a fuel ignition-initiating device (22) such as glow plug positioned generally in spaced relation between the fuel injector (22) and the concave surface (146).