Caterpillar Inc.

John J Wunning

Larry E Schmidt

Paul M Young

Errol W Davis

Ronald J Penick

Mohamad Z Deiri

A control system for an internal combustion engine having a plurality of cylinders and a rotatable crankshaft. Each cylinder has an electronically actuatable intake valve, exhaust valve and fuel injector. The control system includes a sensor which monitors the rotation of the crankshaft and responsively produces a crankshaft pulsetrain. A computer produces operator parameter signals. The operator parameter signals including one of a plurality of operating modes of the engine. A first microprocessor receives the crankshaft pulsetrain, responsively determines the speed of the engine and produces a signal representative of the determined engine speed. A second microprocessor receives the operator parameter signals and the engine speed signal, responsively determines valve and injection events for each cylinder to responsively achieve the one engine operating mode. The second microprocessor produces signals representative of the determined valve and injection events.

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Peoria, IL, United States of America

John J Wunning