Automatic collecting and metering system for fuel oil discharge amount of diesel engine

Abstract

An automatic collecting and metering system for a fuel oil discharge amount of a diesel engine comprises a discharge valve, a fuel oil discharge tank, a metering valve, a metering barrel, a controllerand a touch screen, wherein the upstream of the discharge valve is connected with a fuel oil discharge pipe of the diesel engine; the upstream of the fuel oil discharge tank is connected with the discharge valve, and is used for collecting discharged fuel oil; the upstream of the metering valve is connected with the fuel discharge pipe; opening and closing states of the metering valve and openingand closing states of the discharge valve are always in reverse relation; the upstream of the metering barrel is connected with the metering valve, and is used for collecting discharged fuel oil within preset time; the controller is respectively connected with the discharge valve and the metering valve, and is used for collecting and processing input signals, controlling opening and closing of the discharge valve and the metering valve and metering the discharged fuel oil collected by the metering barrel; and the touch screen is connected with the controller, provided with an electronic visual interface and used for system operation of man-machine interaction by operators. According to the automatic collecting and metering system, automatic control is realized, the measurement precision is improved, the potential safety hazard caused by leakage is avoided, and the automatic collecting and metering system has the advantages of low error-tolerant rate and simple operation.

Description

Technical field [0001] The invention relates to a marine low-speed diesel engine with fuel discharge from a fuel injector, in particular to an automatic collection and metering system for the fuel discharge of a diesel engine, belonging to the technical field of diesel engines. Background technique [0002] As we all know, fuel costs account for a large proportion of shipping costs. When fuel prices are high, they can even reach more than 50%. Therefore, even 1 gram of fuel consumption will affect the economy of ship operations. At the same time, fuel consumption and ship EEDI energy consumption control indicators are closely related, so the fuel consumption per unit power of diesel engines is a very important indicator. All low-speed marine diesel engines are required to measure the actual fuel consumption of each power point of the diesel engine in the bench test before leaving the factory. See figure 1 , The fuel system of a diesel engine includes three sub-systems: the fuel ...

AI Technical Summary

Problems solved by technology

[0003] 1) Inaccurate timing and inaccurate manual operation control will bring time delay, which will lead to measurement error of the amount of discharged oil;

[0004] 2) The manual switch valve is not in place, resulting in the failure of the valve to seal, and the leakage of fuel, which leads to safety hazards

[0005] In short, the existing manual operation method has the defects of low measurement accuracy of the drained oil volume and deviation of diesel engine fuel consumption data.

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