摘要:
A device is disclosed for controlling a variable displacement compressor. The device comprises a microvalve operated control valve. A microvalve device for controlling fluid flow and a micro spool valve for use as a microvalve are also disclosed.
摘要:
A fluid control valve assembly including a microvalve for controlling fluid flow in a fluid circuit having a relatively high fluid pressure requirement, such as vehicular brake system, is fixed to an associated fluid distributing substrate with a high-pressure fluid connection. The fluid distributing substrate is provided with fluid passages adapted for connection to a fluid source to provide communication between the fluid source and the microvalve device. The connection between the microvalve and the fluid distributing substrate may include metallic connections forming electrical current paths between the microvalve and the substrate; solder joints forming part of the pressure boundary of the high-pressure fluid connection; underfill formed of elastomeric or other adhesive; and bonding between the substrate and the microvalves in only selected portions of the surface of the microvalve.
摘要:
A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. An electronically controlled automatic transmission, comprising of an input shaft; an output shaft; a plurality of gears providing driving connection between the input shaft and the output shaft; one of a hydraulically operated brake band and a hydraulically operated clutch which is operable to effect a change in the gear reduction provided by the gears between the input shaft and the output shaft; a source of pressurized hydraulic fluid; and a microvalve device selectively operable to control passage of pressurized hydraulic fluid from the source to the one of a hydraulically operated brake band and a hydraulically operated clutch to operate the one of a hydraulically operated brake band and a hydraulically operated clutch.