Abstract: A brake controller, for controlling the brakes of a towed vehicle, having a control module and a power module is provided. The control module is mounted in the cab of a vehicle used for towing, in such a manner that it can be easily seen and accessed by the driver. The control module is provided with an accelerometer, which can read acceleration forces in at least two axes, and a microprocessor which polls the accelerometer and sends braking information to the power module. The control module is also provided with a gain control, to adjust the amount of brake force information, a manual braking lever and a display panel. The power module, which may be mounted in a convenient location, preferably on the towed vehicle, receives the braking information from the control module and secures power from the towed vehicle to engage its brakes.

Abstract: A brake controller, for controlling the brakes of a towed vehicle, having a control module and a power module is provided. The control module is mounted in the cab of a vehicle used for towing, in such a manner that it can be easily seen and accessed by the driver. The control module is provided with an accelerometer, which can read acceleration forces in at least two axes, and a microprocessor which polls the accelerometer and sends braking information to the power module. The control module is also provided with a gain control, to adjust the amount of brake force information, a manual braking lever and a display panel. The power module, which may be mounted in a convenient location, preferably on the towed vehicle, receives the braking information from the control module and secures power from the towed vehicle to engage its brakes.

Abstract: A vehicle engine brake comprising a vessel for the passage of gases having a main tube and a by-pass tube is provided. The by-pass tube defines a first opening into the main tube and a second opening into a more downstream location of the main tube. A first valve, to regulate the passage of gases through the main tube, is provided within the main tube between the first and second openings defined by the by-pass tube. A second valve to regulate the passage of gasses within the by-pass tube and means for controlling the first valve are also provided. Upon actuation of the first valve, gases in the vessel assist in the braking of the vehicle by creating a pressure change in the engine. The by-pass tube and second valve provide a means for relieving back pressure against the engine without losing continuity in braking assistance.