Axscend Ltd.

Knorr-Bremse Systems for Commercial Vehicles Limited

Colin Ross

Timothy Steer

Jolyon Latham

Matthew Fry

A method for monitoring the braking performance of a vehicle. The method includes, for at least some of the braking events: determining a braking demand; determining vehicle deceleration; defining a first data set of braking events, wherein each braking event in the data set includes a determined braking demand and a determined vehicle deceleration; applying a statistical trend analysis method to the data set to generate a vehicle deceleration and braking demand trend; providing a vehicle deceleration and braking demand reference; and comparing at least one trend value with at least one reference value. From this comparison it is possible to determine if the braking system is operating within an acceptable limit. Apparatus for implementing the method is also disclosed.

Method and apparatus for monitoring operation of a vehicle braking system

A method for monitoring the braking performance of a vehicle. The method includes, for at least some of the braking events: determining a braking demand; determining vehicle deceleration; defining a first data set of braking events, wherein each braking event in the data set includes a determined braking demand and a determined vehicle deceleration; applying a statistical trend analysis method to the data set to generate a vehicle deceleration and braking demand trend; providing a vehicle deceleration and braking demand reference; and comparing at least one trend value with at least one reference value. From this comparison it is possible to determine if the braking system is operating within an acceptable limit. An apparatus for implementing the method is also disclosed.

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.

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Kidderminster, United Kingdom

Colin Ross