Caterpillar Inc.

Timothy A Cross

Dennis A Barney

Steven V Christensen

William M McClure

Brian T Rolli

David G Young

Lorne W Tweed

April D Scott

Ron J Penick

Christian A Schreiner

Michael R Lyons

Curtis V Rocke

The present invention includes a method and apparatus of managing time for a processing system located on a machine. The processing system includes a plurality of controllers and a communication network connecting each of the controllers. Each of the controllers has a local clock. The method includes the steps of establishing an operating characteristic of the machine, determining whether to update a local time in response to said operating characteristic, and updating said local time based upon the local clock in response to said update determination.

Method and apparatus of managing time for a processing system

The present invention provides a control which automatically elevates engine speed to a preselected value when the vehicle coasting in neutral above a preselected speed. In order to accomplish this objective, the engine controller is adapted to receive an actual gear ratio signal and a vehicle speed signal, If the vehicle is in neutral and engine speed is above a preselected threshold, the controller sets the desired engine speed to a preselected value which has been empirically determined to ensure sufficient transmission cooling and lubrication, Controlling to this speed also reduces transmission wear when the transmission is reengaged at high ground speeds.

Elevated low idle for coasting in neutral

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Metamora, IL, United States of America

Timothy A Cross