Ford Global Technolgoies, LLC

Ford Motor Company Limited

Timothy A Droste

Lee John Becker

Charles W Barnes

Mark J Kane

Lev Pekarsky

Thomas T Tibbles

Vladimir Yasnogorodskiy

Scott Raymond Crandall

Stanley D Rosen

Gary H Hafemeister

Paul J Castiglione

Himat B Kher

Clay F Ramseyer

Jerome J Middione

A filter assembly includes a filter housing including an inlet, through which hydraulic fluid enters the housing, and an outlet, through which hydraulic fluid exits the housing, valve housing containing a bypass valve located adjacent the inlet in a chamber, the valve including an orifice that opens and closes in response to differential pressure across the valve, and a screen secured to the valve housing and covering the orifice, the screen having a fine mesh for removing contaminants from the fluid that flows through the valve.

Suction filter for an automatic transmission

A system for separating contaminants from an air stream entering a sealed case through a vent fitting communicating to the interior cavity of the case includes a contaminant separator having a housing enclosing a chamber, an inlet and outlet communicating with the chamber, a baffle located in the chamber and producing a constricted fluid flow passageway between the inlet and the outlet.

Apparatus for venting a transmission case

The automatic transmission for motor vehicles includes a positive displacement pump, a sump hydraulically connected by a passage to the pump inlet, a line pressure control valve having a high pressure outlet, a passage carrying fluid from the control valve through a nozzle and an nozzle exit opening to the passage that connects the sump to the pump inlet. The high pressure passage has a cross section whose area decreases in the direction toward the pump inlet and terminates in a nozzle through which a high speed jet enters the low pressure passage through the nozzle exit opening.

Jet pump for boosting pressure at an inlet supplied from a sump and second fluid source

A cooler bypass valve, located in a hydraulic circuit between the discharge side of a torque converter and lubrication circuit, includes a valve spool urged by feedback pressure acting in opposition to the force of a compression spring to a bypass cooling mode position where the converter discharge fluid flow is connected to the lubrication circuit bypassing the oil cooler. The bypass valve includes a viscosity-sensitive pressure divider, which includes a series arrangement of a laminar orifice and a sharp-edged orifice located between the converter discharge and an oil sump. As oil temperature increases, flow through the laminar orifice produces a control pressure in opposition to the feedback pressure and additive to a spring force, which combine to move the valve spool to a cooling mode position where substantially all of the converter discharge is directed through the oil cooler. In a predetermined temperature range, the valve maintains a position where a portion of the converter discharge is directed to the oil cooler, and the residual to the lubrication circuit.

Hydraulic temperature compensated cooler bypass control for an automatic

A system for controlling operation of a bypass clutch for a torque converter in an automatic transmission includes a clutch capacity control valve, which connects a source of fluid pressure to a space between a converter clutch friction surface and an impeller casing in response to a force balance produced by variable pressure control signal and an unlock control pressure signal, produced by a converter lockout valve. The a clutch capacity control valve also supplies pressurized fluid to a torus of the torque converter. The valve includes four control lands connecting 10 ports, all of which are active and independent.

Torque converter regulator and clutch lockout system for an automotive

A system for controlling a pump in a hydraulic circuit for an automatic transmission, having a viscosity insensitive fixed orifice and a relatively high resistance laminar orifice connected in series relationship between a vent port and a control pressure supplied to a secondary regulated pressure SRP valve. At relatively low temperature, flow through the laminar orifice is negligible; therefore, the steady-state differential pressure across the fixed orifice is negligible. At relatively higher temperatures, flow through the laminar orifice increases. A pressure divider is established and the feedback differential pressure is reduced in proportion to the hydraulic resistance of the two orifices. Flow to friction elements from a primary pump and auxiliary pump and return of fluid to the inlets of the pumps is controlled through a clutch capacity pressure regulator valve acting in cooperation with the SRP valve.

System for controlling multiple hydraulic pumps in an automatic

A sharp-edged orifice, located in an hydraulic circuit between a lubrication system and a source of lubrication, is connected to a flow control valve, which balances the differential pressure across the orifice and throttles the source of fluid pressure to a lubrication feed line. A lube augmentation valve, responsive to pressure, present when operating in forward drive, alternately opens and closes lubrication fluid flow through a second sharp-edged orifice located in a line arranged in parallel with the first orifice and connected downstream from that orifice and upstream from the lubrication circuit.

Hydraulic lubrication control system for an automatic transmission

A system for controlling operation of a bypass clutch for a torque converter in an automatic transmission includes a converter lockout valve for producing a pressure signal having a first magnitude indicating unlocked operation of the converter clutch and a second magnitude representing locked operation, the pressure magnitudes being produced in response to control pressures representing engine speed, transmission operation in any forward gear, and in a first forward gear.

Torque converter clutch lockout hydraulic system

A dual purpose automatic transmission oil pan (10) for covering transmission components (20,22) and containing a reservoir of oil in a sump portion (32). First and second drainback channels (34,36) extend to the sump portion (32) from spaced drain openings (16,18) of a closed-barrel transmission case (14) which permit free flow of oil to the sump portion (32). A magnetic filter (40) is secured to a ramp surface (44) at the confluence of the oil flows (A,B) from the first and second drainback channels (34,36) for removing ferrous contaminants from the oil. An inlet port (26) of a filter cartridge opens into an inlet port region (46) of the sump portion (32).

Dual purpose automatic transmission oil pan

A torque converter lockup clutch is pressurized from a source of regulated line pressure through a lockup clutch control valve, which directs pressure to either of two passages to apply and release the clutch. The control valve is supplied with control pressure from a solenoid-operated valve that produces high and low fluid pressure states corresponding to commands to engage and release the lockup clutch. A second control pressure, opposing the effect of the solenoid-operated control pressure, is applied to the control valve when the vehicle operator manually selects certain gear ratios, principally the lowest forward and reverse gear ratios. A line pressure regulator valve produces line pressure whose magnitude is proportional to the magnitude of a control pressure representing a commanded engine torque output. The pressure produced when the vehicle operator manually selects low gear ratios is applied also to the main regulator valve, which produces a line pressure that varies linearly with engine torque control pressure and increases, in comparison to line pressure at all other gear ratios, when low gear ratios are selected. A converter regulator valve limits the level of line pressure directed by the main regulator valve to the converter clutch control valve.

Growing community of inventors

Howell, MI, United States of America

Timothy A Droste