Abstract:
A solenoid valve is provided having a hydraulic body with an undulated expansion artery to prevent an exchange of fluid between an interior of the hydraulic body and the exterior of the solenoid valve.
Abstract:
A method of making a solenoid module assembly can include forming electrical leads and overmolding the leads to form a single, unitary, monolithic, solenoid body. An intermediate portion of each lead can extend within and be entirely surrounded by the solenoid body. The solenoid body can include a first solenoid valve bore, second solenoid valve bore, first supply cavity open to an exterior of the solenoid body and the first solenoid valve bore, second supply cavity open to an exterior of the solenoid body and the second solenoid valve bore, first control cavity open to an exterior of the solenoid body and the first solenoid valve bore, and second control cavity open to an exterior of the solenoid body and the second solenoid valve bore.
Abstract:
A solenoid actuator is provided which has a lower housing having a generally axially extending portion joined to an end cap with a central opening. An upper housing of the solenoid actuator is formed from a flat stock with a main body with radially extending slot separated legs which are plastically deformed into a cylindrical portion for press fit acceptance with an outer diameter of lower housing axially extending portion.
Abstract:
A hydraulic circuit (88) for an automatic transmission (10) that employs a shift actuation valve (96) that controls the actuation of the synchronizer (29) for selectively controlling gear engagement. The shift actuation valve (96) includes a valve member (114) having at least one valve element (122) with an outer diameter (162) and a metering face (164). The metering face (164) is adapted to control the flow of pressurized fluid between an inlet (108) and an outlet (110) of the valve body (102). The metering face (164) includes a flow force compensating annular void (166) disposed adjacent the outer diameter (162) and that is defined by a lead angle α measured between the outer diameter (162) and a line intersecting the outer diameter (162) and tangential to the annular void (166). A solenoid (104) is employed to move the valve member (114) between predetermined positions.
Abstract:
An automatic transmission (10) having at least one hydraulic valve including a valve body (110) having a valve bore (112) and at least one inlet (120), and at least one outlet (124) adapted to provide fluid communication with a source of pressurized hydraulic fluid (82). A valve member (130) is slidingly disposed within the valve body (110) that includes at least one valve element (132) having an outer diameter and a metering face. The metering face is adapted to control the flow of pressurized hydraulic fluid between the inlet (120) and the outlet (124) of the valve body (110). The metering face includes a flow force compensating annular void (190) disposed adjacent to the outer diameter (186) that is defined by a lead angle α measured between the outer surface and a line intersecting the outer surface and tangential to the annular void.