Caterpillar Inc.

Mary Jill Trumper

Kris Edward Seitz

Thomas N Brooks, Jr

Andrew D Hill

William James Tate

Alexander Cameron Crosman, Iii

Cameron T Lane

Dustin Craig Selvey

Baojun Si

Christopher A Willey

Sanjeev Bharani

Troy A Shawgo

Systems and methods are disclosed for reducing engine fuel consumption during regenerative braking. According to certain embodiments, the regenerative braking system has an engine, a generator, a rectifier, a first inverter, a traction motor, and a reverse recovery unit. The generator is configured to be driven by the engine to produce AC electrical power. The rectifier is configured to receive AC electrical power from the generator and convert the AC power to DC power. The first inverter is configured to receive the DC power and convert the DC power to AC power. The traction motor is configured to be driven by the AC power in a traction mode, and to produce regenerated power when rotated in reverse in a regenerative braking mode. The reverse recovery unit has a second inverter and a filter. The second inverter is electrically connected in parallel with the rectifier and configured to communicate at least part of the regenerated power from the traction motor to the generator during the regenerative braking mode. The filter is electrically connected downstream of the second inverter and in parallel with the rectifier. The filter is configured to filter transient voltage generated by the second inverter during the regenerative braking mode.

Regenerative braking system for reducing fuel consumption

A modular exhaust system is disclosed for treating the exhaust from a fossil fuel powered prime mover; the exhaust system includes bricks, inserts placed inside of the bricks and funnels to direct exhaust through various flow paths in order to treat the exhaust.

Modular exhaust system

An electric drive machine includes an internal combustion engine remotely coupled to an electrical power generator, which is electrically connected to an electrical components system. The electrical components system is electrically connected to a pair of electric drive motors that are configured to drive wheels of the electric drive machine. A cooling system includes a blower fluidly connected to, and positioned downstream of, the electrical components system. The blower is fluidly connected to, and positioned upstream of, the electrical power generator and the pair of electric drive motors.

Air cooling system for electric drive machine

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Sullivan, IL, United States of America

Mary Jill Trumper