Ford Motor Company Limited

Hai Wu

Charles M Jones

Robert P Ernest

Walter K Heintz

Edwin J Ounsted

A fuel injector valve has a nozzle housing with a bore therethrough having an outlet end in communication with a cylinder of an internal combustion engine. The bore has a seating surface at its lower end which seats an annular ring. The annular ring has a central aperture therethrough with a seating surface at its lower open end. The aperture receives a plunger sized to leave a space between the edges of the aperture and the plunger surface. The plunger has a flanged lower section and is spring biased upwardly to have the flanged lower section contact the seating surface of the ring. The upward biasing force also forces the ring to abut the seating surface of the nozzle housing. The fluid under pressure enters the nozzle housing and forces the plunger and annular ring downward. Fluid passes through the passage between the floating ring and nozzle housing and also between a second passage between the floating ring and plunger so that a spray pattern with a cross-section of two concentric rings is formed entering the engine cylinder.

Floating ring fuel injector valve

A cylinder head having an exhaust valve port comprising a throat defined by a wall of substantially circular cross section and a bevelled valve seat circumscribing the wall. The bevelled valve seat has an axially extending annular portion adapted to be engaged by a valve head to close the port, the bevelled valve seat extending axially outwardly from the axis of the throat at an angle to the wall. The improvement comprises the application of a small wall diverter within the exhaust port to force separation of the high temperature exhaust gas stream from the exhaust valve seat when the valve is open.

Engine exhaust valve cooling

A rotary engine employing an improved circumferential flow cooling system is employed to provide an increase in fuel economy and engine efficiency. Each housing unit has its own distinct flow circuit with the total volume of cooling medium being variably distributed among such units. The circuits employ flow foils, flow turbulizers, velocity variation and a variable epitrochoid wall thickness to provide flow characteristics which vary along the stations of the circuit. The variations promote a more uniform engine wall temperature throughout, the coolant can be operated at a higher overall temperature, and heat is transferred (extracted or injected) on a programmed basis along the flow circuit as needed.

Water cooling system - Wankel engine

A method of programming exhaust gas constituents is disclosed which cooperates with a unique exhaust passage liner construction resulting in an improved self-cleaning technique for internal combustion engines. The liner comprises an apparatus which preferably subdivides the outer peripheral region of the exhaust so that the Reynolds number of the outer flow is below 2300 and therefore indicative of laminar or controlled turbulent flow. The laminar transient film between the passage wall and flow is enhanced by the transient film between subdividing walls and the flow, the composite acting to reduce the heat transfer coefficient between the total flow and wall of the exhaust passage.

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Northville, MI, United States of America

Hai Wu