Automobile dual-fuel supply system based on single fuel rail and single fuel injector set

Abstract

The invention discloses an automobile dual-fuel supply system based on a single fuel rail and a single fuel injector set, which relates to automobile fuel supply systems. The system is structurally characterized in that a gasoline fuel tank, a gasoline pump, a gasoline pressure adjustor, a gasoline one-way valve, a three-way valve, a fuel rail, a fuel injector and an engine are sequentially connected to form a gasoline fuel supply unit, a methanol fuel tank, a methanol pump, a methanol pressure adjustor, a methanol one-way valve, a three-way valve, the oil rail, the fuel injector and the engine are sequentially connected to form a methanol fuel supply unit, and an electronic control unit is respectively connected with two sensors and four executive parts to realize control and switching from the gasoline fuel supply unit to the methanol fuel supply unit. By means of the automobile dual-fuel supply system, high power performance, fuel economy, environment-friendliness in discharge and safety and reliability in control can be obtained.

Description

technical field [0001] The invention relates to an automobile fuel supply system, in particular to an automobile dual fuel supply system based on a single fuel rail and a single set of fuel injectors. Background technique [0002] In the 21st century, human beings are facing the crisis of energy shortage and environmental pollution. With the rapid increase of the number of automobiles and the consumption of petroleum resources worldwide, the contradiction between supply and demand of petroleum continues to intensify. In order to fundamentally solve the problem, it is necessary to carry out comprehensive management; the use of alternative fuels is an effective method, and the application of methanol as an alternative fuel for vehicles is one of the current research topics. [0003] In order to fundamentally solve the problems of energy shortage and environmental pollution, a fuel supply system scheme for gasoline and methanol dual-fuel engines was proposed, which realized th...

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Problems solved by technology

[0005] 1. Because there are two oil rails and two sets of injectors, it not only takes up a lot of space, but also has high production costs;

[0006] 2. Two sets of injectors make it difficult to design the injection direction. If one injection direction is designed to be the best, the other injection direction will not be optimal, which will affect the performance of the fuel supply system;

[0007] 3. For fuel injectors that provide methanol fuel, the nozzles will be blocked frequently due to the viscosity of methanol

[0008] 4. Due to the high ignition point of methanol, it is difficult to start at low temperature

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