Alliedsignal Inc.

Stephen P Moran

Charles E Ross

Ronald E Squires

Duncan E Estep

James M Lawson

Ronald W Friend

A test for an electronically controlled braking system, such as an adaptive braking system, is made to assure that the solenoids of each of the modulators are properly wired. According to the test, each modulator is tested in sequence. The exhaust solenoid of a modulator is actuated for 10 milliseconds, and the hold solenoid is then actuated for 30 milliseconds. If the modulator has been miswired, the exhaust solenoid will have been actuated for 30 milliseconds, thus generating a much louder 'popping' sound than that generated by the other modulators will be immediately noticed and corrected.

Method and apparatus for verifying proper wiring of brake pressure

A microcontroller having two internal timers is used to calibrate the engine rpm and wheel speed signals of a vehicle and to time the output periods of these signals, which are transmitted to, for example, digital rpm and speed indicators.

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Elyria, OH, United States of America

Stephen P Moran