Tractor with hybrid power system
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United States of America Patent
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Jun 30, 2015
Grant Date -
Feb 28, 2013
app pub date -
May 3, 2011
filing date -
May 6, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A tractor (100) comprises an internal combustion engine (107) for delivering torque, wheels (101-104) or tracks for imparting a propulsive force to the ground, and a power takeoff shaft (110) for delivering torque to implements attached thereto. The power takeoff shaft is driven by a mechanical drive connection to the engine. An electrical motor/generator (115) is drivingly connected to the engine, and at least one electrical motor (121-124) is arranged to deliver a propulsion force to the wheels or tracks. The motor is electrically connected to, and powered by, the electrical motor/generator. A battery (120) is connected to the electrical motor/generator and to the electrical motor so that electrical energy can be passed therebetween. The motor/generator can also operate as a motor so that the power takeoff shaft is at least partially powered by electrical energy from the battery.
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