Patent ID: 8738241
Filing Date: 2014-05-27
Classification: B60W,E02F,F04B,F15B

Abstract:
1. A machine having a pump overspeed protection system operating thereon, comprising: an internal combustion engine; a plurality of ground engaging elements; a drivetrain coupling the internal combustion engine and the ground engaging elements, wherein the drivetrain includes a torque converter having a locked configuration and an unlocked configuration; a plurality of pumps driven by the internal combustion engine; and an electronic controller in communication with the internal combustion engine, the torque converter, and the plurality of pumps, wherein the electronic controller is configured to determine a pump speed of a first pump of the plurality of pumps, initiate a first action of a hierarchy of pump overspeed protection actions if the pump speed exceeds a first speed threshold, initiate a second action of the hierarchy of pump overspeed protection actions if the pump speed exceeds a second speed threshold, initiate a third action of the hierarchy of pump overspeed protection actions if the pump speed exceeds a third speed threshold, and monitor a condition of a component altered by at least one of the hierarchy of pump overspeed protection actions; wherein at least one of the hierarchy of pump overspeed protection actions includes increasing a displacement of at least one of the plurality of pumps and at least another of the hierarchy of pump overspeed protection actions includes moving the torque converter from the locked configuration to the unlocked configuration.