Ford Global Technolgoies, LLC

Autoliv Asp, Incorporated

Steven John Bigham

Colm Peter Boran

Darwin Allen Becker

Vasant Babaldas Patel

William Clayton Corcoran

David Matthew Mantey

Paul Douglas Bingham

A method of testing a high-side driver and a low-side driver in an airbag squib circuit includes preliminary testing of squib resistance and squib leakage for a plurality of trials. Next, one of the drivers is turned on while keeping the other one of the drivers off. A current-limited power supply supplies an intermediate voltage to a squib terminal and the voltage at the terminal is continuously compared with a predetermined voltage range which includes the intermediate voltage. The one driver is turned off in response to the voltage at the point being outside the predetermined voltage range, thereby detecting that the one driver is operating properly. If the voltage at the point remains in the predetermined voltage range for a predetermined time period, then the one driver is turned off and an indication is made that the one driver has failed. If the first driver passed, then the other driver is tested in the same manner.

High and low side driver tests for airbag module

An air conditioner compressor clutch control that senses operator demands for acceleration from low vehicle speeds and several other variables, to release the engagement of the clutch for a period of time that is dependent on vehicle speed, throttle position or a maximum time period.

Method and apparatus for controlling the clutch of an air conditioning

Growing community of inventors

Canton, MI, United States of America

Steven John Bigham