POWER SYSTEM HAVING EFFICIENCY-BASED SPEED CONTROL

摘要

A power system is disclosed as having a power source, a transmission configured to receive a torque output from the power source and to drive a traction device, and an operator input device. The power system may also have a controller configured to reference a signal from the operator input device with a map stored in memory to determine a corresponding speed of the power source, and to determine a margin between an actual and a maximum available torque output of the power source at a current speed. The controller may also be configured to selectively adjust a speed of the power source mapped to the maximum displaced position of the operator input device based on the margin, and to selectively adjust fueling of the power source at a current displacement position of the operator input device and operation of the transmission based on the signal and map.

主权项

1. A power system for use with a mobile machine having a traction device, comprising:
a power source configured to generate a torque output; a transmission configured to receive at least a portion of the torque output and to drive the traction device; an operator input device movable through a range from a neutral position to a maximum displaced position to generate a signal indicative of a desired torque of the traction device and a desired speed of the power source; and a controller in communication with the power source, the transmission, and the operator input device, the controller being configured to:
reference the signal from the operator input device with a map stored in memory to determine a corresponding speed of the power source;determine a margin between an actual and a maximum available torque output of the power source at a current power source speed;selectively adjust a speed of the power source mapped to the maximum displaced position of the operator input device based on the margin; andselectively adjust fueling of the power source at a current displacement position of the operator input device and operation of the transmission based on the signal and on the map.