Caterpillar Inc.

David Langsford Collins

Sridhar Deivasigamani

Brian Eugene Lister

Larry Ellis Kendrick

Timothy A Lorentz

James B Maddock

Benjamin Treichel

Kevin A Vernagus

Stephen Eric Post

Robert Urban Murray

Satish Yadav

Gareth John Estebanez

A hybrid energy management system that estimates the net regenerative energy that can be collected during the breaking action of the swing mechanism, then, since this is the net energy that can be used to recharge an energy storage device without using the engine to help recharge the energy storage device, the system limits the use of the energy storage device to that net amount predicted to be available from the recovery period. The net regenerative energy is calculated by considering motor and inverter efficiencies for transferring energy to the battery and changes in the boom/stick/bucket inertia moment.

Hybrid energy management system

An exemplary power management system may include a power source and a transmission. The transmission may include a drive member and at least two shift ranges. The drive member may be driveably engaged with the power source. The power management system may also include a control system in communication with the power source and the transmission. The control system may be operative to cause a shift transition between the at least two shift ranges in response to a shift command. The control system may also be operative, during at least a portion of the shift transition, to modify at least one of a speed of the drive member and a speed of the power source based on at least one of a load condition of the power source, a speed of the power source, and the at least two shift ranges.

Power management system

Growing community of inventors

Normal, IL, United States of America

David Langsford Collins