Control system for a central lubrication system for vehicle

Abstract

A control system for a central lubrication system with an electrically operated lubrication pump for vehicles without their own power source, such as trailers, carriers for utility vehicle, etc., includes an electrical time-controlling device to activate the lubrication pump as a function of the operating time of the vehicle. Power is supplied to the time-controller device and the drive motor for the lubrication pump via the feed lines for the brake light. The time-controlling device has a sensor which detects motion of the vehicle or parts of the vehicle and generates a signal for a second timer during such motion. The second timer adds the durations of the signals sent from the sensor, compares the sum of the durations to a predefined pause time and, when the predefined pause time is exceeded, sends a signal to a third timer, which is thus enabled and in turn sends an enable signal for the activation of the drive motor of the lubrication pump during the next braking operation; the third timing signal adds the durations of successive braking operations during which the drive motor of the lubrication pump is activated, compares the sum of the durations with a predefined operating time and, upon reaching the predefined operating time, sends a signal to the second timer, whereby the enable signal sent from the second timer, and consequently also the enable signal for the activation of the drive motor of the lubrication pump, are cancelled.