keeping them running
Page 69
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by Trevor Longcroft
From Stewart Automotive Equipment. Warlingham, Surrey, comes a device that could be fitted to any diesel engine or engine-driver compressor to prevent seizure. Twenty-five seconds before engine cut-out an audible and visual warning operates in the cab.
The device consists of an electrically operated valve that responds to water temperature and oil pressure sensors, arresting the flow of fuel to the injection pump should either sensor indicate a ',seizure condition. Until the fault is rectified it is only possible to start the engine for periods up to 25sec.
The solenoid valve used to arrest the flow of fuel is mounted on the inlet side of the injection pump and has been designed to prevent the need for venting of the fuel system for a restart after the fuel cut-off has been used.
The Robomatic kit consists of a warning buzzer common to all sensors, a heat sensor preset to operate at 105deg C and a connection that can be fitted to the oil switch used, and a fuel cut-off valve.
The solenoid is energized when the vehicle is running normally. In the event of an electrical failure in the warning system the fuel will cut off without any accompanying warnings and this lack of signal will indicate that there is no potential seizure condition.
Available for 12V or 24V supply, the Robomatic is claimed to be capable of fitment in three or four hours and is priced at £22.50,