Rover Group Limited

Other

Bayerische Motoren Werke Aktiengesellschaft

Martin Roy Haggett

William Hutchins

Klaus Bourdon

Andrew Peter Woolley

Axel Rose

Deiter Meisberger

Michael Krauss

Christopher R Boyce

A vehicle ( ) is disclosed which includes a thermostat ( ) in a bottom hose ( ) of a radiator ( ). An onboard diagnostic arrangement is provided to monitor the efficiency of the thermostat ( ). Temperature sensors (S , S ) are provided to monitor the temperature of the coolant across the radiator ( ) so that a controller ( ) can derive from those measurements the temperature differential across the thermostat ( ). If the temperature T of the coolant at the thermostat inlet is below the thermostat opening temperature T and the differential temperature between the thermostat inlet temperature T and the thermostat outlet temperature T is below a fault threshold D , the thermostat ( ) is evaluated as being stuck open or leaking, which results in a fault being recorded and a malfunction indicator lamp (MIL) being illuminated.

Vehicle

Powertrain control system

A method of monitoring for misfire in an internal combustion engine of a vehicle includes sensing vibration of the vehicle by sensing the movement of liquid in a liquid reservoir e.g. by using the fuel level sensor 18 in the fuel tank 12 of the vehicle, determining when the vehicle is being vibrated in such a manner as will affect the misfire detection, and adapting monitoring when such vibration is sensed to avoid incorrect misfire detection.

Method of monitoring vibrations in vehicles

Growing community of inventors

Rugby, United Kingdom

Martin Roy Haggett