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公开(公告)号：US11867286B1
公开(公告)日：2024-01-09
申请号：US17844248
申请日：2022-06-20
发明人： Raymond Theodore Gage , Derek Kinch , Sylvia Chen
IPC分类号： F16H57/04 , F16H61/4043 , F16H61/02 , F16H61/00 , F16H61/4165 , F16H45/02
CPC分类号： F16H61/4043 , F16H57/0417 , F16H57/0435 , F16H61/0003 , F16H61/0025 , F16H61/0251 , F16H61/4165 , F16H45/02 , F16H57/0413
摘要： A vehicle includes a heat exchanger, a transmission, and a controller. The transmission is configured to transfer power within a powertrain. The transmission has a primary fluid circuit, a secondary fluid circuit, and a valve. The secondary fluid circuit is configured to divert the fluid from the primary fluid circuit and deliver the fluid to the heat exchanger. The valve is configured to control diverting fluid from the primary fluid circuit to the secondary fluid circuit. The controller is programmed to, in response to a temperature of the fluid being outside of a desired range, open the valve to direct the fluid toward the heat exchanger via the secondary fluid circuit. The controller is further programmed to, in response to the temperature of the fluid being within the desired range, close the valve to isolate the fluid from the secondary fluid circuit and the heat exchanger.
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公开(公告)号：US20230375084A1
公开(公告)日：2023-11-23
申请号：US18366613
申请日：2023-08-07
发明人： Thomas M. O'NEIL
CPC分类号： F16H61/0206 , F16H61/0251 , F16H63/3483 , F16H63/3026 , F16H61/30
摘要： Methods and systems for hydraulic actuation of axle system components are provided. A hydraulic system in an electric axle, is provided in one example, which includes a housing with a plurality of sections that enclose an electric motor and a gearbox, the system further includes a hydraulic pump that is coupled to the housing and configured to supply pressurized fluid to a solenoid valve through a plurality of fluid passages. The hydraulic system further includes a clutch in the gearbox configured to receive the pressurized fluid from the solenoid valve through a hydraulic passage internally routed through the housing.
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公开(公告)号：US20230184364A1
公开(公告)日：2023-06-15
申请号：US17552039
申请日：2021-12-15
CPC分类号： F16L41/03 , F15B13/085 , F15B13/0814 , F16H61/0009 , F16H61/0206 , F16H61/0251 , F16L41/16
摘要： A unitized valve body for use in an automatic transmission includes a valve bore and an annulus. The valve bore is configured to receive a valve. The annulus is in fluid communication with the valve bore. The annulus defines an outer portion having an outer diameter and an innermost portion located at an interface between the valve bore and the valve. The outer portion having a first axial length and the innermost portion having a second axial length. The first axial length is greater than the second axial length.
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公开(公告)号：US20230184323A1
公开(公告)日：2023-06-15
申请号：US17552025
申请日：2021-12-15
发明人： Steven Anatole Frait , Frank Hanson
CPC分类号： F16H61/0009 , B22F3/105 , B22F5/106 , F15B13/085 , F15B13/0814 , F16H61/0206 , F16H61/0251 , F16L41/03 , F16L41/16
摘要： A unitized valve body for use in an automatic transmission includes a plurality of first hydraulic passages, a second hydraulic passage and a plurality of orifices. The second hydraulic passage extending through the unitized valve body and configured to be in fluid communication with a plurality of valve bores. Each orifice disposed within the unitized valve body and fluidly connecting the second hydraulic passage to a respective first hydraulic passage of the plurality of first hydraulic passages.
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公开(公告)号：US20190203827A1
公开(公告)日：2019-07-04
申请号：US15948195
申请日：2018-04-09
发明人： Yong Uk SHIN , Minho CHAE , Chon Ok KIM , Sun Sung KWON
CPC分类号： F16H61/0025 , F16H41/30 , F16H61/0251 , F16H61/0276 , F16H2061/0037
摘要： An oil supply system of an automatic transmission for vehicle may include low-pressure oil pump discharging the oil to low-pressure passage; torque converter control valve controlling flow of the low-pressure passage while recirculating some of surplus flow rate and supplying the controlled flow rate to an operating-side chamber of torque converter and downstream valve; torque converter lock-up clutch switch valve supplying the flow rate of the torque converter control valve and circulation flow rate of the operating-side chamber of the torque converter to lubrication passage; torque converter pressure control valve supplying the flow rate to non-operating side chamber of the torque converter; high-pressure oil pump boosting some of the flow rate of the low-pressure passage and discharging the boosted flow rate to high-pressure passage; and line regulator valve supplying the surplus flow rate during control process to the low-pressure passage and supplying the controlled flow rate to high-pressure portion.
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公开(公告)号：US10060525B2
公开(公告)日：2018-08-28
申请号：US15029822
申请日：2014-09-17
发明人： Markus Herrmann , Thilo Schmidt , Bernd Allgaier
IPC分类号： F16H61/02
CPC分类号： F16H61/0276 , F16H61/0206 , F16H61/0251 , F16H61/0267 , F16H2061/026
摘要： When the stop valve is in a first shifting position, a torque-transferring shift element is sealed tight against the rest of a hydraulic system by a stop valve, such that the actuating pressure enclosed in the shift element remains essentially constant or does not decrease. The stop valve is formed and arranged in the hydraulic system such that the stop valve is held in the first shifting position by the force of a barrier pressure generated by the pump, and, upon a standstill of the pump or falling below a certain value of the pressure generated by the pump, the stop valve is automatically displaceable at least through the action of the trapped shift element pressure into a second shifting position, in which the respective shift element is connected to the rest of the hydraulic system and the shift element is open.
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公开(公告)号：US09951861B2
公开(公告)日：2018-04-24
申请号：US14666619
申请日：2015-03-24
发明人： Derek Kinch
CPC分类号： F16H57/0446 , F16H61/0025 , F16H61/0031 , F16H61/0251 , F16H61/14 , F16H2061/0037 , F16H2061/0258
摘要： An automatic transmission uses 6 shift elements applied in combinations of four to establish ten forward speed ratios and a reverse speed ratio. The automatic transmission uses a hydraulic control system to control engagement of the six elements, control engagement of a torque converter bypass clutch, control engagement of a parking pawl, and to provide fluid for a hydrodynamic torque converter and for lubrication. The parking pawl is disengaged in response to engagement of two of the six shift elements and remains disengaged in response to engagement of other shift elements. A single valve controls several different functions associated with the two-pass torque converter. Pressurized fluid is provided by a variable displacement engine driven pump and also by an electric pump. A priority valve reduces lubrication flow when other fluid demands are high as indicated by the pump displacement control circuit.
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公开(公告)号：US09746071B2
公开(公告)日：2017-08-29
申请号：US14571467
申请日：2014-12-16
申请人： Robert Bosch GmbH
发明人： Klaus Schudt , Erwin Mueller
CPC分类号： F16H61/0206 , F16H61/0251 , F16H61/065 , F16H2061/0258 , F16K31/0613 , Y10T137/86622
摘要： A pressure control valve, in particular for an automatic transmission in a motor vehicle, including a housing and including a control piston situated in the housing, the control piston being actuatable by an armature situated in a magnet chamber of a pole tube, the magnet chamber being hydraulically connected to a compensating chamber provided in the housing, which is delimited, in particular by a lateral surface of a solenoid coil and the housing.
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公开(公告)号：US09683657B2
公开(公告)日：2017-06-20
申请号：US14537374
申请日：2014-11-10
申请人： DENSO CORPORATION
发明人： Tetsuya Hara , Norihisa Achiha , Hiroyuki Nakane , Masaki Aihara
IPC分类号： F15B13/043 , F16H61/02 , F16K31/06
CPC分类号： F16H61/0251 , F16H2061/0253 , F16K31/0613 , Y10T29/49609 , Y10T137/86622
摘要： A biasing force adjustment device includes: a cylindrical component having a first thread part; a reciprocate component accommodated in the cylindrical component; a biasing portion that biases the reciprocate component in a first direction; and a biasing force adjustment component that adjusts a biasing force of the biasing portion. The biasing force adjustment component has a second thread part engaged with the first thread part so as to control the position of the biasing force adjustment component relative to the cylindrical component, and a regulation part that regulates movement of the biasing force adjustment component relative to the cylindrical component by being deformed in a radial direction by external force applied in the first direction.
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公开(公告)号：US20170114920A1
公开(公告)日：2017-04-27
申请号：US15268771
申请日：2016-09-19
申请人： DENSO CORPORATION
CPC分类号： F16K31/0675 , F16H61/00 , F16H61/0251 , F16K31/0668 , G05D16/00 , G05D16/2013
摘要： A control circuit includes a computing unit, which computes a target oil pressure, a duty output unit, which outputs a drive electric current based on a result of computation of the computing unit, and a dither output unit, which applies a dither signal to a linear solenoid. The dither signal is added to the drive electric current outputted from the duty output unit and is applied to the linear solenoid. The dither output unit always applies the dither signal to the linear solenoid throughout an operation. The dither output unit reduces a pulse height of the dither signal in a dead zone in comparison to a pulse height of the dither signal in a control zone. In this way, even when an axial position of a spool is changed between the control zone and the dead zone, the amplitude of dither of the spool can be made generally constant. Thereby, it is possible to limit a change in an output oil pressure.
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