Explored to aid the remote control of marine diesel engines now becoming the keen interest of the world's shipping circles, the cylinder oil flow-meter which has been developed by the authors based on the principle of differential transformer measures the rate of oil flow in each cylinder oil supply pipe with reasonable cost. This flow-meter detects and indicates the oil flow per cycle of the mechanical lubricator pump by means of transforming the flow into the displacement of piston in the detector, and then into the voltage. The meter is designed to sound alarm when flow rate becomes below the set point. Besides monitoring, digital indication and alarm signal, the meter can record automatically the flow rate when connected with the engine data logger.
