Disclosed are downforce feedback systems for active aerodynamic devices, methods for making/using such systems, and vehicles equipped with a closed-loop downforce feedback system to govern operation of the vehicle's active aero device(s). A feedback control system for operating an active aerodynamic device of a motor vehicle includes one or more pressure sensors for detecting fluid pressures in one or more pneumatic or hydraulic actuators for moving the active aero device. A vehicle controller receives fluid pressure signals from these sensor(s), and calculates an actual downforce value from these signal(s). The controller retrieves a calibrated downforce value from mapped vehicle downforce data stored in memory, and determines if the actual downforce value differs from the calibrated value. If so, the controller determines a target position for a target downforce value for a current vehicle operating condition, and commands the actuator(s) to move the active aero device to the target position.

A system for use in an automatic transmission includes a 3-way solenoid-actuated valve includes a valve body having an inlet port and a first outlet port and a second outlet port, a valve disposed within the valve body and slidably controllable to proportion flow between the first outlet port and the second outlet port, and a spring disposed in the valve body to bias the valve for flow toward the second outlet port. The system also includes at least one pump providing fluid to the inlet port, a first fluid circuit connected to the first outlet port providing fluid to a first subsystem of the automatic transmission, and a second fluid circuit connected to the second outlet port providing fluid to a second subsystem of the automatic transmission.

Disclosed are downforce feedback systems for active aerodynamic devices, methods for making/using such systems, and vehicles equipped with a closed-loop downforce feedback system to govern operation of the vehicle's active aero device(s). A feedback control system for operating an active aerodynamic device of a motor vehicle includes one or more pressure sensors for detecting fluid pressures in one or more pneumatic or hydraulic actuators for moving the active aero device. A vehicle controller receives fluid pressure signals from these sensor(s), and calculates an actual downforce value from these signal(s). The controller retrieves a calibrated downforce value from mapped vehicle downforce data stored in memory, and determines if the actual downforce value differs from the calibrated value. If so, the controller determines a target position for a target downforce value for a current vehicle operating condition, and commands the actuator(s) to move the active aero device to the target position.

A system for use in an automatic transmission includes a 3-way solenoid-actuated valve includes a valve body having an inlet port and a first outlet port and a second outlet port, a valve disposed within the valve body and slidably controllable to proportion flow between the first outlet port and the second outlet port, and a spring disposed in the valve body to bias the valve for flow toward the second outlet port. The system also includes at least one pump providing fluid to the inlet port, a first fluid circuit connected to the first outlet port providing fluid to a first subsystem of the automatic transmission, and a second fluid circuit connected to the second outlet port providing fluid to a second subsystem of the automatic transmission.

A rain awning system and an electric vehicle using the system, wherein the rain awning system having an awning stretching and storing device mounted on a frame front crossbeam, the awning stretching and storing device having a roller, awning fabric rolled around the roller and a drive assembly for driving the rotation of the roller, and the roller and the drive assembly are both fixed to the frame front crossbeam which is connected to a support plate; and the rain awning system further having an awning fabric drive device which is provided on the support plate and is used for driving the awning fabric rolled around the roller to stretch outwardly, and a guide assembly for guiding the movement of the awning fabric is provided between the awning fabric and a door. The electric vehicle having the rain awning system. The awning fabric of the rain awning system is stretched or retracted quickly, it is possible to provide the function of providing shelter for a driver when the door is opened in the rain, having a high degree of humanization, so that the quality of the electric vehicle is enhanced.

A rain awning system and an electric vehicle using the system, wherein the rain awning system having an awning stretching and storing device mounted on a frame front crossbeam, the awning stretching and storing device having a roller, awning fabric rolled around the roller and a drive assembly for driving the rotation of the roller, and the roller and the drive assembly are both fixed to the frame front crossbeam which is connected to a support plate; and the rain awning system further having an awning fabric drive device which is provided on the support plate and is used for driving the awning fabric rolled around the roller to stretch outwardly, and a guide assembly for guiding the movement of the awning fabric is provided between the awning fabric and a door. The electric vehicle having the rain awning system. The awning fabric of the rain awning system is stretched or retracted quickly, it is possible to provide the function of providing shelter for a driver when the door is opened in the rain, having a high degree of humanization, so that the quality of the electric vehicle is enhanced.