Caterpillar Inc.

Caterpiller Inc.

Thomas Lynn Grill

Eric Wade Cler

Andrew O Fonkalsrud

Steven V Christensen

Mitchell J McGowan

Lucas Adam Knapp

Bradford Jay Holt

Steven Kohl Anderson

Rick William Berlage

A machine includes a power source, an engine retarder associated with the power source, and a traction device receiving power from the power source and configured to propel the machine. The machine also includes a brake mechanism associated with the traction device, and a controller in communication with the engine retarder and the brake mechanism. The controller is configured to activate the engine retarder, substantially simultaneously with the brake mechanism, based on a brake pressure associated with the brake mechanism.

Retarding system

A control system for a machine is disclosed. The control system may have a power source, an operator input device, a work implement, and a controller in communication with the power source and the operator input device. The operator input device may be configured to generate a signal indicative of a desired mode of power source operation. The work implement may be driven by the power source to accomplish a task. The controller may be configured to classify a currently performed task, and adjust power source operation based on the task signal and the classification.

Machine system having task-adjusted economy modes

An electrohydraulic control device for a drive train of a machine including an engine, a transmission, a torque converter, and an impeller clutch is disclosed. A manually operated impeller clutch pedal produces an impeller clutch pedal signal in response to the position of the impeller clutch pedal. An impeller clutch electrohydraulic valve produces fluid flow to the impeller clutch to controllably engage and disengage the impeller clutch. An impeller clutch pressure curve that is responsive to the impeller clutch pedal position is stored in memory. A rotary position switch selects a desired rimpull setting indicative of a desired reduction in rimpull and produces a desired rimpull signal. An electronic controller receives the desired rimpull signal and reconfigures the impeller clutch pressure curve. Thereafter, the electronic controller receives the impeller clutch pedal signal and controllably actuates the electrohydraulic valve to produce a desired impeller clutch pressure defined by the impeller clutch pressure curve.

Electrohydraulic control device for a drive train of a machine

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Marseilles, IL, United States of America

Thomas Lynn Grill