公开(公告)号：US20240052857A1

公开(公告)日：2024-02-15

申请号：US18259357

申请日：2021-11-26

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD.

发明人： Yuji OISHI ,  Keisuke IWADO ,  Hiroyuki TOKOI ,  Masanori SATOU

IPC分类号： F15B7/10 ,  F16H61/00

CPC分类号： F15B7/10 ,  F16H61/0031

摘要： A hydraulic control device for a hydraulic actuation machine including a main oil pump configured to supply oil to the hydraulic actuation machine, a sub oil pump configured to temporarily supply oil to the hydraulic actuation machine based on a drive request so as to compensate for an oil shortfall when supply of oil from the main oil pump to the hydraulic actuation machine is stopped or insufficient, and a drive unit configured to drive the sub oil pump, wherein when an elapsed time elapsed from a time point when the sub oil pump is driven reaches a predetermined time, the hydraulic control device generates an air discharge command for discharging air accumulated in the sub oil pump and outputs the air discharge command to the drive unit, and the drive unit drives the sub oil pump to discharge the air accumulated in the sub oil pump based on the output air discharge command.

公开(公告)号：US20240141985A1

公开(公告)日：2024-05-02

申请号：US18548172

申请日：2022-02-25

申请人： JATCO LTD ,  NISSAN MOTOR CO., LTD.

发明人： Tarou MURAZUMI ,  Hajime TASAKA ,  Keisuke IWADO ,  Hiroyuki TOKOI ,  Yuji OISHI

IPC分类号： F16H61/12 ,  B60W10/02 ,  B60W10/06 ,  B60W30/18 ,  F16H63/50

CPC分类号： F16H61/12 ,  B60W10/02 ,  B60W10/06 ,  B60W30/18072 ,  F16H63/50 ,  B60W2030/1809 ,  B60W2510/108 ,  B60W2710/021 ,  B60W2710/0644 ,  F16H2061/1256

摘要： In a vehicle control device for controlling the vehicle, when automatic downshift control for automatically downshifting a speed ratio of the transmission is executed in the case where a drive current value of the motor obtained when the second oil pump is driven is larger than a maximum value of the drive current value of the motor obtained when the second oil pump is driven in a normal drive state, the vehicle control device increases a minimum rotation speed of the drive source compared to a case where the drive current value of the motor is equal to or less than the maximum value, and when the automatic downshift control is executed in the case where a line pressure generated by a hydraulic pressure supplied from the first oil pump and the second oil pump is larger than a predetermined value, the vehicle control device does not increase the minimum rotation speed of the drive source even in the case where the drive current value of the motor obtained when the second oil pump is driven is larger than the maximum value.

公开(公告)号：US20200032900A1

公开(公告)日：2020-01-30

申请号：US16314163

申请日：2017-06-27

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD

发明人： Hiroyuki TOKOI ,  Kenji YONEDA ,  Hironori MIYAISHI

IPC分类号： F16H61/662 ,  B60W10/107

摘要： For a hybrid vehicle including an engine, a motor generator, and a belt-type continuously variable transmission, a controller performs a low speed position return expediting control in response to a downshift request accompanying deceleration. During the low speed position return expediting control, the controller increases a differential pressure between a primary pressure and a secondary pressure and cause a downshift toward a lowest speed position transmission ratio by reducing the primary pressure, and further reduces the primary pressure when the secondary pressure becomes greater than or equal to a trigger threshold value during the downshift; and terminates the low speed position return expediting control when an actual secondary pressure decreases to a secondary pressure minimum level. The controller further sets a secondary pressure lower limit higher than the secondary pressure minimum level during the low speed position return expediting control.