Kelsey-hayes Company

Marc Bolitho

Thomas Baron

Michael L Babala

Helmut Gegalski

Paul M Schliebe

Mike Babala

Jeffrey E Shaya

Doug Lewin

Michael Babala

Gordon Thomas

Burkard Bustgens

Nicodemus Kappen

Thomas Barron

Jeffery E Shaya

An electronic control unit for a vehicle system that includes at least one acceleration sensor and at least one angular rate sensor for generating data concerning motion of the vehicle relative to vehicle reference axes.

Motion sensors integrated within an electro-hydraulic control unit

The reliability of a pressure sensor is improved either by utilization of redundant components. A pair of pressure sensors are mounted upon a single pressure sensor diaphragm. Each of the pressure sensors is connected to one of a pair of signal conditioning circuits. The gain of one of the signal conditioning circuits is a fraction of the gain of the other signal conditioning circuit. The outputs of each of the signal conditioning circuits are compared to a corresponding threshold. If both of the output signals exceed the corresponding threshold, it is determined that a malfunction of the pressure sensor has occured.

High reliability pressure sensor

A pressure sensor is mounted integrally in a hydraulic valve body. The sensor has a base which extends into a bore formed in the valve body. The valve body bore is in communication with a pressurized hydraulic fluid. A first circumferential groove formed in the sensor base carries an O-ring which forms a seal between the sensor and the wall of the valve body bore. A second circumferential groove formed in the sensor base carries a spring ring which extends into a corresponding groove formed in the wall of the valve body groove. The spring ring cooperates with the sensor base and valve body bore grooves to retain the sensor in the valve body bore.

Pressure sensor integrated into an electro-hydraulic control unit

A pressure sensor is mounted upon a hydraulic valve body. The sensor has a base which extends into a bore formed in the valve body. The valve body bore is in communication with a pressurized hydraulic fluid. A cover that is removably attached to the valve body encloses the pressure sensor. A circuit substrate is disposed within the cover and electrically connected to the pressure sensor.

Pressure sensor intergrated into an electro-hydraulic control unit

An electrical connector is mounted within an end of a cylindrical pressure sensor housing. The connector has a base that is disc-shaped with a diameter that is less than the diameter of the housing to allow the connector to move within the housing in a direction perpendicular to the axis of the housing. A piece of flex circuit connects conductors carried on the connector base to other electrical components within the pressure sensor while allowing the base to move.

Floating electrical connector for a pressure sensor

The reliability of a pressure sensor is improved either by utilization of redundant components. A pair of pressure sensors are mounted upon a single pressure sensor diaphragm. The pressure signals generated by the pressure sensors are compared and, if the difference between the signals exceeds a predetermined threshold, it is determined that a malfunction of the pressure sensor has occurred. Alternately, additional diagnostic testing may be included to detect a malfunctioning sensor.

Growing community of inventors

Linden, MI, United States of America

Marc Bolitho