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marine oil pressure gauge
The marine oil pressure gauge is expressed in kilograms or pascals (bar, Mpa) of the unit of gravity, and the scale generally ranges from 0 to 1.0 degrees. As shown in the figure:
The marine outboard boat oil pressure gauge is installed in the oil tank and the electric fuel pump connected with the oil transfer assembly delivers the fuel to the oil passage assembly through the oil filter in the pipeline. The oil pump is designed to provide the fuel pressure higher than the regulated pressure required by the nozzle, and the excess fuel will return to the oil tank through the return pipe. The detection terminal of the oil pump is located in the engine room. When the engine stops running, the battery voltage can be applied to the detection terminal to start the oil pump.
System residual pressure Read the fuel system oil pressure when the engine is idling. Then shut down the engine and wait for 5 minutes. The system oil pressure should be kept above 250 kPa. If the residual pressure cannot be maintained, start the engine again and shut down after the oil pressure is established. At this time, if the normal residual pressure can be maintained after the oil return pipe is clamped, it means that the oil pressure regulator leaks; If the normal residual pressure cannot be maintained until the oil inlet pipe is clamped, it means that the fuel pump (one-way valve) leaks oil; If the residual pressure cannot be maintained by clamping the oil inlet pipe and the oil return pipe at the same time, it indicates that the fuel injector leaks oil. Test example of fuel pressure regulator Pressure measurement of fuel supply system of AJR engine of Volkswagen Santana 2000 car. Install the pressure gauge on the fuel supply pipe of the gasoline distribution pipe, turn on the switch of the gasoline pressure gauge, and start the engine to run at idle speed. The system pressure standard is (300 ± 20) kPa when the vacuum pipe is pulled out at idle speed; (250 ± 20) kPa without pulling out the vacuum pipe. Connect the vacuum pipe and bang the accelerator. The pointer of the gasoline pressure gauge should jump between 280 and 300 kPa. Turn off the ignition switch. After 10 minutes, the gasoline holding pressure should be greater than 150 kPa. If the gasoline pressure is less than 150kPa, start the engine and run at idle speed.
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