摘要:
An automatic transmission is disclosed that includes a clutch pressure control module housing having therein: (1) a plurality of solenoid valves, each of the solenoid valves configured to receive an input of the pressurized hydraulic fluid and to provide a variable output pressure of pressurized hydraulic fluid in response to an electric control signal; (2) means for sensing output pressure from each of the solenoid valves of the plurality of solenoid valves; and (3) electronic control means configured to generate electric control signals to one or more of the solenoid valves of the plurality of solenoid valves in response to (i) a clutch pressure command signal or a solenoid pressure command signal, and (ii) a solenoid output pressure signal from the means for sensing output pressure. The solenoid valves provide hydraulic control signals to clutch hydraulic pressure control valves, which in turn provide hydraulic power to clutch actuators.
摘要:
A pressure and flow control system for a torque converter clutch includes a pilot valve, a regulating valve, and a torque converter control valve. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The regulating valve is in fluid communication with the pilot valve, and is configured to receive the pilot signal. The regulating valve is further configured to output a control signal. The torque converter control valve is configured to engage and disengage the torque converter clutch in response to the control signal.
摘要:
An automated manual transmission includes a hydraulic device, a pilot valve, and a regulating valve. The pilot valve is operably connected to the hydraulic device and configured to actuate. The pilot valve includes at least one micro-electro-mechanical systems (MEMS) based device. The regulating valve is operably connected to the pilot valve and the hydraulic device. The regulating valve is configured to direct fluid to the hydraulic device based on the actuation of the pilot valve.
摘要:
A pressure and flow control system includes a hydraulically-controlled component, a pilot valve, and a regulating valve. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The regulating valve is in fluid communication with the pilot valve, and is configured to receive the pilot signal. The regulating valve is further configured to output a control signal, which controls the hydraulically-controlled component.
摘要:
A powertrain system in a hybrid vehicle includes a hydraulic device, a pilot valve, and a regulator valve. The pilot valve is operably connected to the hydraulic device and configured to actuate. The pilot valve includes at least one micro-electro-mechanical systems (MEMS) based device. The regulator valve is operably connected to the pilot valve and the hydraulic device. The regulator valve is configured to direct fluid to the hydraulic device based on the actuation of the pilot valve.
摘要:
A wet dual clutch transmission includes at least one hydraulic component and a pilot valve operably connected to the hydraulic component to actuate the hydraulic component. The pilot valve includes a Micro-Electro-Mechanical Systems (MEMS) based pressure differential actuator valve. The hydraulic component may include but is not limited to a first clutch and a second clutch of the wet dual clutch transmission, a lube regulator valve, an on/off solenoid, a synchronizing shift fork or a line pressure control valve.
摘要:
A bleed solenoid valve that includes a valve main body that is hollow and formed with an input port, an output port, and a discharge port; a flow-changing part that is accommodated inside the valve main body and formed with a first flow path and a second flow path, a valve shaft that is accommodated inside the flow-changing part; and a solenoid part that moves the valve shaft in the axial direction.
摘要:
A solenoid spool valve includes a sleeve, a spool, and a feed-back chamber. The sleeve has an input port and an output port. The input port receives fluid, and the output port is communicated with a control target chamber. The spool is received within the sleeve displaceably along a longitudinal axis of the sleeve to control a communication state of the input port and the output port. The feed-back chamber is communicated with the output port. The feed-back chamber applies pressure of output fluid to the spool in a valve closing direction for closing the solenoid spool valve. The sleeve has a feed-back passage opening at a passage between the output port and the control target chamber. The feed-back passage provides communication between the output port and the feed-back chamber.
摘要:
A manual valve is formed with a drain input port that closes if a shift is made to the D position, and opens for draining if a shift is made to the N position. A switching valve communicates an output port of a pressure regulating valve portion and an oil passage of a clutch and closes a drain port during engine operation when a line pressure is applied, and cuts off communication between the output port of the pressure regulating valve portion and the oil passage of the clutch and communicates the oil passage with the drain port during an engine automatic stop when the line pressure is not applied. The drain input port and the drain port are connected by a drain oil passage.
摘要:
A method for heating a transmission is provided. The transmission has at least one solenoid valve that hydraulically actuates a valve. The method includes the steps of measuring a transmission temperature, determining whether the transmission temperature is greater than or equal to a desired operating temperature, determining a currently selected gear ratio of the transmission, and overdriving at least one solenoid valve if the transmission has not achieved the desired operating temperature and if overdriving the solenoid valve will not disrupt the operation of the transmission for the currently selected gear ratio.