Eaton Corporation

Gerald E Ganski

Ronald K Markyvech

Alan R Davis

Stephen A Edelen

Douglas C Gooch

Donald J Rozsi

Edward F Handley

A control system/method to minimize unwanted multiple upshifts in an automated mechanical transmission system (,). After a full-throttle upshift (,A), the engine speeds at which upshifts are commanded are increased from a default value (,) to a modified value (,) until the occurrence of a reset event.

Method/system for controlling upshifting in an automated mechanical transmission system

A system for controlling the operation of a multiple speed axle connected to an automated transmission system is disclosed. The system includes an actuation device that cooperates with a processing unit to prevent the transmission from shifting gears while the axle shift is being performed. In one embodiment, once transmission shifting is prevented, the axle shift operation is performed manually by the vehicle operator, such that the vehicle operator manipulates the vehicle throttle to interrupt torque and synchronize the axle for engagement. The automated transmission then notifies the operator that the transmission is in a hold mode until the operator determines that the axle shift has been completed. The operator then manually returns the transmission to the drive mode to resume normal automatic transmission shifting. In a second embodiment, the axle shift operation is automatically performed by the processing unit.

System for shifting a multiple speed axle for an automated mechanical

A control system/method for controlling inertia brake (19) operation in an automated mechanical transmission system (10) shifted without disengaging the master clutch (16). A value representing inertia brake temperature (T.sub.SIM) is simulated and compared to reference values to determine if inertia brake operation is allowable.

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Lawton, MI, United States of America

Gerald E Ganski