Ford Motor Company Limited

Robert A Stein

William Francis Stockhausen

Aladar O Simko

James R Clarke

A multicylinder internal combustion engine has an intake port for each cylinder, with the flow through the intake port being controlled by a port throttle having a sliding plate mounted normally to the longitudinal axes of the intake ports and having windows which may be selectively indexed with the intake ports so as to direct charge air either symmetrically or asymmetrically into the cylinders.

Internal combustion engine having intake port throttles incorporating

An intake system for a multicylinder internal combustion engine includes a plenum for supplying air to the engine's cylinder, a plenum throttle for admitting air into the plenum, a low speed runner extending between the plenum and at least one intake port formed in the cylinder head, a high speed runner extending between the plenum and the intake port, and a secondary throttle interposed between the runners and the intake port, such that the secondary throttle controls flow in both the high speed and low speed runners.

Internal combustion engine intake system with variable tuning

A variable camshaft drive system for an internal combustion engine includes a primary camshaft phaser interposed between the engine crankshaft and a first camshaft. A secondary camshaft phaser determines the phase relationship between the first camshaft and a second camshaft driven by the first camshaft and which is located on the same bank of cylinders as the first camshaft. The operation of each phaser is controlled by an electronic controller which samples one or more engine operating parameters.

Variable camshaft drive system for internal combustion engine

A method of operating an automotive-type engine by independently phase shifting the intake and exhaust valves to provide at part loads late closing of the intake valve during the compression stroke to reduce pumping losses, with a delayed overlap between the opening of the intake valve and closing of the exhaust valve controlled to reduce HC and control NO.sub.x by providing a desired level internal EGR by the backflow of gases into the cylinder and intake port, and late opening of the exhaust valve during the expansion stroke to increase expansion work; also a low overlap at idle for improved stability, and optimizing valve timings at wide open throttle for increased torque and power output.

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Northville, MI, United States of America

Robert A Stein