Patent ID: 8181731
Filing Date: 2012-05-22
Classification: B60K,B60L,F16H,Y02T

Abstract:
1. A drive train for a work vehicle comprising: an engine mounted to a vehicle body such that an output shaft of the engine extends in a lateral direction of the vehicle body; a hydrostatic transmission having a pump shaft, a motor shaft, and a housing, the pump shaft being coupled to the output shaft of the engine, the hydrostatic transmission being mounted to the vehicle body such that the pump shaft and the motor shaft extend in the lateral direction; and a mechanical transmission having a plurality of transmission shafts and being covered by a transmission case and mounted to the vehicle body such that each of the transmission shafts extends in the lateral direction, the plurality of the transmission shafts including an input shaft connected to the motor shaft of the hydrostatic transmission; wherein the hydrostatic transmission includes a port block connected to the transmission case, the port block having a first side extending adjacent the engine and a second side extending opposite from and parallel to the first side, the housing of the hydrostatic transmission includes a first case for covering a hydraulic pump of the hydrostatic transmission, a second case for covering a primary hydraulic motor of the hydrostatic transmission, and a third case for covering an auxiliary hydraulic motor of the hydrostatic transmission, in which the first case is connected to the second side of the port block, the second case is connected to the transmission case and the first side of the port block, and the third case is connected to the second side of the port block.