Abstract: A trailer electronic braking system comprising a braking device capable of generating a braking force on a wheel on the trailer. The braking force is applied to brake cylinders and is controllable by a braking ECU, which braking ECU is connected to a standards compliant communication bus on the trailer. The ECU is adapted to receive data inputs from sensors, on the trailer. The system further includes an arrangement to interface to trailer electronics and a communications interface having a 802.11 wireless card adapted to transmit an SSID. The braking system is adapted to transmit a trailer identifier comprising the SSID. The trailer identifier can be paired with a further device previously provided with the trailer identifier. The braking system enables the SSID to be changed to a second SSID when a pre-determined condition is met.

Abstract: A trailer vehicle function control system for a trailer. The system comprises an electronic control unit adapted to central the height of the trailer and communication means adapted to receive data concerning trailer height. In use, the communication means transmits data to the eieetronic control unit and the electronic control unit compares the actual tralier height with the received data concerning trailer height. If the actual trailer height is different to the remived data trailer height the electronic control unit adjusts the trailer height to the received data trailer height.

Abstract: A trailer electronic braking system comprising a braking device capable of generating a braking force on a wheel on the trailer. The braking force is applied to brake cylinders and is controllable by a braking ECU, which braking ECU is connected to a standards compliant communication bus on the trailer. The ECU is adapted to receive data inputs from sensors, on the trailer. The system further includes an arrangement to interface to trailer electronics and a communications interface having a 802.11 wireless card adapted to transmit an SSID. The braking system is adapted to transmit a trailer identifier comprising the SSID. The trailer identifier can be paired with a further device previously provided with the trailer identifier. The braking system enables the SSID to be changed to a second SSID when a pre-determined condition is met.

Abstract: A trailer electronic braking system comprising a braking device capable of generating a braking force on a wheel on the trailer. The braking force is applied to the brake cylinders and is controllable by a braking ECU, which braking ECU is connected to a standards compliant communication bus on the trailer. The ECU is adapted to receive data inputs from sensors on the trailer. The system further includes an arrangement to interface to trailer electronics and a communications interface. In use, the arrangement transmits a request to the device for a driver to apply a predetermined condition to the trailer to enable control functions to be actuated from a remote device.

Abstract: Electronic control apparatus for a vehicle, in particular a heavy goods vehicle, which apparatus includes an electronic control unit (ECU) adapted to control actuation of vehicle brakes. The ECU has a non volatile storage memory for storing braking related control parameters particular to the vehicle and a discretely programmable storage device to carry operating data for one or more auxiliary functions of the vehicle. The ECU is operable to check one or more incoming and outgoing variables and control algorithms against a predefined list such as to safeguard the braking function against error modes.

Abstract: Electronic control apparatus for a vehicle, in particular a heavy goods vehicle, which apparatus comprises an electronic control unit (ECU) adapted to control actuation of vehicle brakes. The ECU has non volatile storage memory means for storing braking related control parameters particular to the vehicle and discretely programmable storage means to carry operating data for one or more auxiliary functions of the vehicle. This is operable to check one or more incoming and outgoing variables and control algorithms against a predefined list such as to safeguard the braking function against error modes.

Abstract: A compressed air operable wheeled trailer braking system includes a braking electronic control unit (ECU) having an electronically operable control valve which derives suitably proportioned load and vehicle speed dependent service brake pressure for brake chambers of the trailer wheeled. The braking ECU has a data memory storing specific braking parameters normally installed therein prior to commissioning the trailer. The trailer has a further diagnostic ECU responsive to vehicle operational sensors, the further ECU also having memory capacity. The specific braking parameters are stored via a communication link consequent upon installation thereof to the braking ECU. Upon recognizing installation of a replacement braking control unit, the parameters from the further ECU are installed in the replacement ECU.

Abstract: A compressed air operable wheeled trailer braking system includes an electronic braking control unit (ECU) 26 having an electronically operable control valve 22 which derives suitably proportioned load and vehicle speed dependent service brake pressure for brake chambers 23, 24, 25 of the trailer wheeled. The ECU 26 has a data memory storing specific braking parameters normally installed therein prior to commissioning the trailer and the trailer has a further diagnostic ECU 27 responsive to vehicle operational sensors, the further ECU also having memory capacity wherein said specific braking parameters are stored via a communication link consequent upon installation thereof to the braking ECU and means which recognizes installation of a replacement braking control unit 26 to install said parameters herein from said further ECU.

Abstract: In a piston and cylinder gas compressor having a cylinder block, a valve plate and a cylinder head the sealing means between the cylinder head and the valve plate is designed to constrain the delivered air and/or coolant fluid to flow in an extended fluid flow path to enhance the heat flow from the delivered air before arrival at a delivery port.

Abstract: A piston and cylinder air compressor has a valve plate between an upper end of the cylinder and a cylinder head, the valve plate having a generally diametrically located recess at the inward surface thereof accommodating a suction valve reed, the valves being located above apertures at least to one side of said recess the arrangement being such as to minimize the operating clearance volume of the compressor.