A palm oil engine fuel heating, filtering and dual-fuel automatic switching device

Abstract

A palm oil engine fuel heating, filtering and dual-fuel automatic switching device is composed of a palm oil heating part, a palm oil filter (8), and a dual-fuel switching part. The heater (5) of the palm oil heating part is composed of a sleeve housing (21) with a heating core tube (4), which uses the waste heat of the exhaust to heat the palm oil, and the stepper motor (7) controls the opening of the ventilation butterfly valve (9). degree, adjust the temperature inside the heater (5), and precisely control the heating temperature of the palm oil; the palm oil filter (8) is equipped with a heating element (18) to ensure smooth filtering of the palm oil; the dual-fuel switching part includes the palm oil through The on-off solenoid valve (3), the diesel on-off solenoid valve (2), and the oil-off solenoid valve (1) are automatically controlled by the electronic control unit (28) in the electric control device (D), and can be selectively switched automatically Palm oil supply mode or diesel fuel supply mode, to realize automatic control of dual fuel supply. The invention has good matching performance, low operating cost and good economic and social benefits.

Description

technical field [0001] The invention relates to an engine oil supply system, in particular to a dual-fuel oil supply system and a control device thereof. Background technique [0002] With the development of industrial economy and transportation industry, the shortage of traditional diesel fuel and its pollution have prompted people to step up their search for and research on alternative energy sources for diesel. Vegetable oil as an alternative fuel for engines has received increasing attention in the industry. The use of vegetable oil in running engines has been proved feasible by experiments, especially in tropical and subtropical regions rich in palm oil. Vegetable oil is cheap and has good application effect. It not only has low cost, but also reduces environmental pollution. At present, the promotion and application of vegetable oil as a new fuel for engines has the following problems: one is that the viscosity of vegetable oil is relatively high, such as the viscosity...

AI Technical Summary

Problems solved by technology

At present, the popularization and application of vegetable oil as a new fuel for engines has the following problems: one is that the viscosity of vegetable oil is relatively high, such as the viscosity of palm oil at room temperature is much higher than that of diesel oil, and the viscosity of palm oil at 92°C is the same as that at 20°C The viscosity of diesel oil is quite similar. If palm oil is used as fuel at room temperature, the oil circuit will be blocked and the oil supply will be blocked due to excessive viscosity. Second, in order to reduce the viscosity of palm oil and improve fluidity, it must be heated, and only electric heating is used. The way of fuel tank and oil circuit will consume a lot of electric energy, and the service life of the battery will be greatly shortened during operation, and the normal working time is short, which is difficult to be practical. The heating speed is slow, the effect is poor, and the actual temperature of palm oil cannot be controlled. Therefore, when palm oil and diesel are used as dual fuels, palm oil is easy to stick to the fuel injection pump, fuel injection nozzle and oil pipe, which is difficult to clean, and the nozzle is easy to deposit carbon. ; Fourth, it is necessary to switch the fuel oil to diesel before shutting down. Generally, manual switching is used, and finally manual shutdown is used. The operation is very inconvenient and the quality cannot be guaranteed.

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