Haynes Corporation

Schultz Gregory Lee

Edward H Harrison

Ed A Schlairet

A modified pump follower device () and method of retarding injection timing of EMD-type unit injectors by a desired amount of crank degrees includes the steps of providing a modified pump follower () whose plunger engagement location, also known as t-slot (), varies depending on the desired amount of retarding. Specifically, the modified pump follower () has a t-slot () which has a predetermined distance t' on the modified pump follower (), as compared to conventional pump followers having a predetermined distance t, such that the t-slot () is closer to the top face () of the pump follower (). The difference in spacing between the original timing t and the retarded timing t&#x2032; is r, which is an amount equal to the amount of retardation, in linear units, that corresponds to the desired amount of retardation in crank degrees.

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Naples, FL, United States of America

Schultz Gregory Lee