Caterpillar Inc.

Chad L Kassube

Ethan Tevis

Steven Edward Johnson

Corwin Eugene Storer

Balmes Tejeda

Bryan Dale Van Dyke

Matthew Donald Meads

Dwanz Mwalimu Mwasi

Michael Robert Kunde

Aaron P Hofner

A powertrain system for a machine is described. The powertrain system includes a power source configured to provide a torque output. The powertrain system further includes a first drivetrain coupled to the power source, to drive a first set of ground engaging members, and a second drivetrain coupled to the power source to drive the second set of ground engaging members. The powertrain system further includes a controller having one or more lug curve maps defining a maximum allowed torque value of the power source for a current operating condition of the machine. The controller is configured to determine a parasitic load due to the second drivetrain, and adjust the torque output of the power source based on the determined parasitic load to maintain a rimpull performance of the machine, where the adjusted torque output is limited by the maximum allowed torque value.

Powertrain system for maintaining rimpull performance of machine

A braking system for a machine includes a first valve assembly having a first electronically actuated proportional valve, and a second valve assembly having a second electronically actuated proportional valve. The braking system includes a first pressure sensor and a second pressure sensor disposed downstream of the first and second valve assemblies, respectively. The first and second pressure sensors are configured to determine a first pressure and a second pressure of a braking fluid from the first and second valve assembly. The braking system also includes a controller configured to receive a signal indicative of the first pressure and the second pressure of the braking fluid and compare the first pressure and the second pressure. The controller is configured to selectively actuate at least one of the first electronically actuated proportional valve and the second electronically actuated proportional valve to substantially equalize the first pressure and the second pressure.

Braking system and method for machine

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Peoria, IL, United States of America

Chad L Kassube