Caterpillar Inc.

Richard Lane Fulcher

Ethan Tevis

Timothy A Evans

Travis Neale Richards

Yongtao Li

Matthew D Dobsch

A motor grader having ride control for dampening machine bounce using a DCM assembly rotatably coupled to and suspended from a frame of the motor grader is disclosed. Each lift cylinder for the DCM may have an associated ride control circuit with an accumulator, a ride control conduit fluidly connected to a carry end of the lift cylinder and having a flow restriction element, and a ride control accumulator valve fluidly connected to the accumulator and the ride control conduit and operable to either block or allow fluid communication between the carry end and the accumulator through the flow restriction element. Each rid control circuit may also include a head end valve fluidly connected to between the head end of the lift cylinder and a low pressure fluid reservoir and operable to block or allow fluid communication between the head end and the low pressure fluid reservoir.

Motor grader suspended mass ride control

A mobile machine includes an internal combustion engine operatively connected to a plurality of propulsion devices for travel over a work surface. The mobile machine can include an electronic controller that receives condition data signals indicative of the operating state or condition of the mobile machine from a plurality of condition input sensors. The electronic controller compares the condition data signals with condition threshold to determine whether to operate the internal combustion engine in accordance with rated engine speed range or an adjusted engine speed range.

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Peoria, IL, United States of America

Richard Lane Fulcher