Emulsion fuel enabling system and method

摘要

Disclosed are a system and a method for promoting the formation of the emulsified fuel of a diesel engine. The system includes a viscous oil-water tank; an emulsified fuel mixing device for mixing viscous oil-water with diesel fuel to obtain emulsified fuel; a dual-fuel return fuel emulsification-promoting device connecting to a diesel tank, the emulsified fuel mixing device, and the return fuel pipe and the main fuel pipe of the engine respectively; a heat-exchanging device for heating the emulsified fuel from the dual-fuel return fuel emulsification-promoting device by the cooling water of the engine; a first purifying pipe and a second purifying pipe for purifying the main fuel pipe; and a dual-fuel management device for switching between the diesel fuel supply and the emulsified fuel supply according to the temperature of the cooling water, and after the ignition switch of the engine is closed, for controlling the diesel fuel to clean up the emulsified fuel in the engine, in the main fuel pipe and in the devices. By using the system, the water content of the emulsified fuel can be up to 33% and the diesel engine can keep essentially unchanged power, start easily and run steadily.

主权项

1. An emulsion fuel enabling system comprises the following components:
a premix water tank adapted to hold premix water which is made up of water and surfactant; a WDE blending module connected to said premix water tank and a diesel fuel tank, it mixes premix water and diesel to produce WDE, said WDE blending module comprises a mixing tank, a spray misting unit for controlling emulsion fuel droplet size and a fluid level sensor, a nozzle of the spray misting unit is located inside the mixing tank, said fluid level sensor is also located inside the mixing tank, said spray misting unit and the fluid level sensors are both linked to a dual fuel management module; a dual-fuel return fuel enabling module connected to said diesel fuel tank, said WDE blending module, an engine return fuel line and a main fuel supply line, said dual-fuel return fuel enabling module comprises a dual-fuel return fuel enabling tank, a return fuel valve and a fuel supply valve, said return fuel valve located above said fuel supply valve; a heat exchange module connected to said main fuel supply line and said dual-fuel return fuel enabling module, engine coolant supplies heat to the heat exchange module to pre-heat WDE fuel; a first purge line and a second purge line, said first purge line is connected to said diesel fuel tank and a main fuel supply line inlet, said second purge line is connected to a main fuel supply line outlet and said dual-fuel return fuel enabling module; a dual fuel management module connected to said WDE blending module, said dual-fuel return fuel enabling module and the heat exchange module via electric transmission wires and signal transmission wires; it selects the fuel type to supply to an engine according to the engine's coolant temperature, it will start the purge cycle when an ignition switch is turned off; a first purge route uses diesel fuel from an auxiliary fuel supply line to purge the engine's internal fuel system, a second purge route starts from said first purge line, said main fuel supply line, and said second purge line purge WDE fuel from the main fuel supply line and components configured to the main fuel supply line; wherein the mixing tank comprises an upper portion where new WDE is produced and a lower portion where ready-to-use WDE is temporarily stored.