Gas Research Institute

John E Lambert

Larry E Schluer

David W Procknow

Douglas Dickson

David A Trayser

George M Bedross

A fuel system for a single-cylinder internal combustion gas engine comprising a constant gas pressure governor that is situated in a gas supply line extending to the throat of a venturi carburetor, the gas pressure governor including a diaphragm-operated gas valve that responds to changes in static pressure on the upstream side of the venturi of the carburetor, the governor being adapted to compensate for changes in venturi throat pressure due to the opening and the closing of the intake valve for the single-cylinder engine, whereby the governor tends to maintain a uniform air/fuel ratio throughout a large engine speed range.

Fuel system and constant gas pressure governor for a single-cylinder,

A carburetor assembly having a venturi element for fuel metering and a throttle valve for controlling the flow of an air and natural gas mixture to the combustion chamber of an internal combustion gas engine wherein a stepper motor is used to angularly position a throttle valve plate in the gas flow path to the carburetor, the throttle valve plate being carried on a throttle valve shaft that forms an extension of the armature of the stepper motor wherein provision is made for sealing the stepper motor at a location on the axis of rotation of the throttle valve element, the throttle valve shaft being mounted without the necessity for using throttle valve shaft bearings or a separate seal, thereby minimizing friction and any tendency for a misalignment to occur.

Carburetor assembly for an internal combustion gas engine

A small bore internal combustion engine our-stroke operating cycle which is adapted to function with natural gas and other gaseous fuels and which is particularly useful with residential heat pump assemblies with maximum life expectancy, high thermal efficiency, and low exhaust gas emissions, wherein provision is made for assembling the engine in a compact heat pump system with a low operating noise level and an extended engine maintenance interval.

Lean-burn internal combustion gas engine

An electronic control system for an internal combustion gas engine adapted to control the timing pulse for spark ignition in a single cylinder gas engine wherein precise timing of the spark advance throughout a wide range of engine speeds can be achieved whereby efficient burning of a lean air/fuel mixture in the combustion chamber of the engine can be achieved to minimize undesirable exhaust gas emissions and to increase the operating engine efficiency.

Ignition timing control

An internal combustion engine is provided with a biased by-pass throttle valve that trims the flow of supplementary combustion air for mixing with basic combustion air and fuel induced in carburetor venturi. The by-pass throttle valve is controlled by an electrical stepmotor that is regulated by a pre-programmed microprocessor in response to sensed engine speed and engine manifold pressure conditions to thereby improve engine operating efficiency and reduce noxious emissions without utilizing catalytic converter equipment.

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Dublin, OH, United States of America

John E Lambert