Controlling operating processes in vehicle in dependance on temperature of electronic control circuit
1998
The temperature of an electronic control circuit which controls and/or regulates operating processes in a motor vehicle is monitored by sensor 15 in contact with the control circuit. Means 14 which identify whether the detected temperature value T exceeds at least one of at least two different threshold values T 1 , T 2 . Different measures are then initiated depending upon which of the different threshold values is exceeded. As described, when the first, lower threshold is exceeded, the operating processes are limited to those which produce less heat or provide lower losses, nd may involve switching off electrical circuits and operating mechanical, hydraulic or emergency electrical systems to replace the electrical circuits. The electronic circuit may comprise two parts, one more temperature sensitive than the other, with the less temperature sensitive circuit monitoring the other. Transmission control, where hydraulics and electronics are integrated into a single passage is specified.
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