Caterpillar Inc.

Darrel Henry Meffert

Robert L Meyer

Michael James Pollard

John Roger Weber

Philip Stephen Bruza

Timothy John Boland

Ronak Dhanendrakumar Shah

Jonas Arunas Aleksonis

Cory Andrew Brown

Roger Leroy Urven, Jr

Mark Harold Runge

The disclosure may provide a method of driving a mobile machine that includes a left-side track assembly and a right-side track assembly for propelling the machine and an implement for performing work. The method may include determining whether the machine is traveling approximately straight forward or backward, and determining whether a load exerted on the implement is less than a threshold load value. A signal may be output, with a controller, to adjust a speed of the left-side track assembly or a speed of the right-side track assembly when the machine is traveling approximately straight forward or backward and the load exerted on the implement is less than the threshold load value, to thereby bring the left-side track assembly out of phase with the right-side track assembly.

Track drive system and method

An end cap for an exhaust treatment device is disclosed. The end cap has a cylindrical housing with an axial direction, a radial direction substantially orthogonal to the axial direction, a first open end, and a second closed end opposing the first open end in the axial direction. The end cap also has an integral port member extending from an annular surface of the cylindrical housing. The integral port member has a central axis aligned in the radial direction, and an exterior surface of the integral port member tangentially connects to an exterior surface of the cylindrical housing.

Exhaust treatment device having flow-promoting end caps

A piston for an internal combustion engine is disclosed. The piston has a piston crown with a face having an interior annular edge. The piston also has first piston bowl recessed within the face of the piston crown. The first piston bowl has a bottom surface and an outer wall. A line extending from the interior annular edge of the face and tangent with the outer wall forms an interior angle greater than 90 degrees with the face of the piston. The piston also has a second piston bowl that is centrally located and has an upper edge located below a face of the piston crown.

Double bowl piston

A hydraulically activated fuel injection system uses a common rail that is maintained at relatively high pressure by a pump when the engine is running. During start-up, a volume reducer is used to pressurize the common rail until the pump can take over. A member of the volume reducer protrudes through one end of the common rail and is movable into and out of the common rail. When the ignition is activated, the member advances into the common rail causing the fluid volume to decrease and the pressure within the hydraulic system to increase, thereby allowing activation of the fuel injectors and starting the engine before the system pump is able to supply high pressure fluid to the common rail. Once the pump is able to sustain system pressure to the desired level, the member can retract to its original position.

Volume reducer for pressurizing engine hydraulic system

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Sahuarita, AZ, United States of America

Darrel Henry Meffert