Controller for tractor trailer braking devices

Abstract

A controller of the invention is used for tractor trailer braking devices having a service brake, an exhaust brake and a retarder brake for a tractor, and a retarder brake for a trailer. The controller includes a main operating switch situated at a driver seat for controlling the exhaust brake and the tractor and trailer retarder brakes, a first interlocking switch for interlocking between the service brake and the tractor and trailer retarder brakes, a second interlocking switch for locking the tractor retarder brake, a first device to detect a condition of an accelerator pedal, a second device to detect a condition of a clutch, a third device to detect a condition of a brake pedal, and a fourth device to detect a condition of a trailer brake. The controller can effectively utilize the exhaust brake, and the tractor and trailer retarder brakes according to the driver's intention.

Dependencies are inferred from the claim text.