US 12,434,549 B2
Work vehicle
Yuji Hirase, Sakai (JP); Sumio Yagyu, Sakai (JP); Kazuto Okazaki, Sakai (JP); and Tsunehiro Ii, Sakai (JP)
Assigned to KUBOTA CORPORATION, Osaka (JP)
Filed by KUBOTA CORPORATION, Osaka (JP)
Filed on Dec. 15, 2022, as Appl. No. 18/081,739.
Claims priority of application No. 2022-038615 (JP), filed on Mar. 11, 2022; and application No. 2022-038616 (JP), filed on Mar. 11, 2022.
Prior Publication US 2023/0286369 A1, Sep. 14, 2023
Int. Cl. B60K 6/365 (2007.10); B60K 6/405 (2007.10); B60K 6/442 (2007.10); B60K 6/547 (2007.10); F16H 57/021 (2012.01); F16H 57/02 (2012.01)
CPC B60K 6/405 (2013.01) [B60K 6/365 (2013.01); B60K 6/442 (2013.01); B60K 6/547 (2013.01); F16H 57/021 (2013.01); B60Y 2200/92 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02056 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A work vehicle, comprising:
an engine;
a hybrid transmission including:
an electric transmission; and
a gear transmission;
the electric transmission and the gear transmission being positioned along a vehicle-body front-rear direction, the gear transmission including a gear driver, the hybrid transmission being operable to vary power from the engine and output the power to a travel device;
a transmission case in which the hybrid transmission is accommodated, the transmission case being provided in a vehicle body in a state where the transmission case is side by side with the engine along the vehicle-body front-rear direction; and
an input transmission; wherein
the electric transmission includes a first motor generator and a second motor generator and is on a side of the gear transmission on which side the engine is located;
the first motor generator is on a side of the second motor generator on which side the engine is located;
the second motor generator is on a side of the first motor generator on which side the gear transmission is located;
the work vehicle further comprises, on a side of the second motor generator on which side the gear transmission is located, an output transmission connecting the second motor generator to an input of the gear transmission to transmit an output from the second motor generator to the input;
the input transmission connects an input shaft of the transmission case to the first motor generator to input power from the input shaft into the first motor generator; and
the input transmission is on a side of the first motor generator on which side the engine is located.