公开(公告)号：US11286841B2

公开(公告)日：2022-03-29

申请号：US16381973

申请日：2019-04-11

申请人： KUBOTA CORPORATION

发明人： Yuki Takano ,  Makoto Noguchi ,  Tetsuji Matsushita

IPC分类号： F01P7/02 ,  F01P5/02 ,  F01M13/00 ,  F01M13/04 ,  F02M35/10

摘要： A prime mover includes an engine, a fan to generate a cooling airflow around the engine, an air-intake tube to supply outside air to the engine, a connection tube to supply, to the air-intake tube, a blow-by gas generated in the engine, and a wind shielding member to shield the connection tube from the cooling airflow, the wind shielding member being arranged around the connection tube.

公开(公告)号：US09772018B2

公开(公告)日：2017-09-26

申请号：US14178799

申请日：2014-02-12

申请人： KUBOTA CORPORATION

发明人： Tsutomu Aizawa ,  Makoto Noguchi

IPC分类号： F16H61/433 ,  F16H39/02 ,  B60W10/06 ,  F16H61/431 ,  F16H61/47

CPC分类号： F16H39/02 ,  B60W10/06 ,  B60W2540/10 ,  B60W2710/0644 ,  F16H61/431 ,  F16H61/47 ,  F16H2312/10

摘要： There is provided a working machine which is capable of vehicle speed control through accelerator pedal operation even during execution of work under a condition where engine rotational speed is maintained constant. The working machine has the normal mode for exercising vehicle speed control by controlling engine rotational speed on the basis of the amount of depression of the accelerator pedal and by controlling the swash plate of the HST pump on the basis of the engine rotational speed, and the attachment mode for exercising vehicle speed control by controlling the swash plate of the HST pump on the basis of the amount of depression of the accelerator pedal irrespective of engine rotational speed.

公开(公告)号：US11505922B2

公开(公告)日：2022-11-22

申请号：US17487676

申请日：2021-09-28

申请人： KUBOTA CORPORATION

发明人： Ryuki Nishimoto ,  Teruhiko Iwamoto ,  Tsutomu Aizawa ,  Makoto Noguchi

IPC分类号： E02F9/22 ,  F16H61/4069 ,  F16H61/42

摘要： The working machine includes a traveling device, a traveling motor, a hydraulic pump including a swashplate, a prime mover to drive the hydraulic pump, a first servo-cylinder to set an angle of the swashplate, a charge pump to supply pilot fluid to the first servo-cylinder, a switching valve shiftable between a traveling position to supply the pilot fluid from the charge pump to the first servo-cylinder and a neutral position to stop the pilot fluid supply to the first servo-cylinder, a switching operation member operable to select either a traveling mode or a neutral mode, and a controller to shift the switching valve between the traveling position and the neutral position. The controller holds the switching valve at the neutral position after the switching operation member is operated to select the traveling mode until a rotation speed of the prime mover becomes not less than a first predetermined rotation speed.