Ford Motor Company Limited

Edwin J Ounsted

Wallace R Wade

Robert P Ernest

Hai Wu

George C DeBell

Charles M Jones

George T Luzanski

Thomas E Crowley

Robert W Gardner

A multipart ceramic cylinder head construction, comprises: a ceramic plate having (i) opposed faces, (ii) a central zone through which extends a transverse central axis, (iii) a peripheral zone about the central zone, the plate further having three or more gas or fluid transfer openings extending transversely through the central zone and spaced about the central axis to divide the central zone into radial sectors, each sector containing one of the openings; a first ceramic intake port block having sufficient ceramic mass to define a gas passage and define an integral compression receiving portion, the first block being adapted to mate with one of the radial sectors of the plate to align the first passage with the opening in such one radial sector; a second ceramic exhaust port block having sufficient ceramic mass to define a second gas passage and define an integral compression receiving portion, the second block being adapted to mate with another of the radial sectors of the plate to align such second passage with the opening in such other radial sector; and means effective to (i) secure the blocks mated to the plate in compression, and (ii) provide an air gap spacing between the blocks.

Multipart ceramic cylinder head

A compression linkage is disclosed for use between a first swivel pin having a first thermal expansion characteristic and a second swivel pin of a second and differing thermal expansion characteristic, comprising: (a) a first shaft comprised of substantially the same material as the first pin and having a mateable end and another end adapted for swivel connection to said first pin; (b) a second shaft comprised of substantially the same material as the second pin and having a mateable end and another end adapted for swivel connection to said second pin; and (c) means providing a rigid compression joint between the mateable ends of said first and second shafts. Preferably, the first pin is adapted to operate in a high temperature environment, such as 400.degree.-500.degree. F., and is comprised of a ceramic effective to have a flexural strength of at least 100,000 psi (500 MPa) in such temperature range. The material for the second pin is preferably comprised of metal having a tensile strength of at least 550 MPa and a coefficient of thermal expansion in the range of 8-20 ppm/.degree. K. The metal may be selected from the group consisting of high carbon steel and sintered powdered metal.

Hybrid ceramic/metal compression link for use in higher temperature

A unique two piece rotor construction and method of fabrication is disclosed. The rotor is cast in split positions (bifurcated along a central plane) by a shell molding or high pressure green sand technique. The portions have special pairs of interfitting mating faces, at least one being generally radially directed and at least one being generally axially directed. After the cast portions have said interfitting faces machined to a predetermined finish, and cleansed. The portions are assembled in a fixture with flux and braze material between said faces. The assembly is heated in a controlled atmosphere furnace to complete the brazed bond between said faces.

Two-piece rotor for wankel engines

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.

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Dearborn, MI, United States of America

Edwin J Ounsted