Ford Global Technolgoies, LLC

Ford Motor Company Limited

Mark J Kane

Timothy A Droste

Charles W Barnes

Gary J Denyer

Paul J Castiglione

Vern Edward Welch

Joseph B Dierker, Jr

In an automatic transmission system, a position sensor provides digital and analog output indications of the sensed position of a manually operated transmission gear shift lever. Electrical contacts within the sensor are configured to minimize wear and corrosion by eliminating electrical continuity in the switching elements when the gear shift lever is in the Drive position.

Position sensor for transmission gear selector switch

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 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

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Eastpointe, MI, United States of America

Mark J Kane