Gasoline direct injection (GDI) oil sprayer for utilizing electromagnetic heating coil for heating

Abstract

The invention provides a gasoline direct injection (GDI) oil sprayer for utilizing an electromagnetic heating coil for heating and belongs to the technical field of gasoline engine fuel injection systems. According to the GDI oil sprayer, an insulating sheath I, the electromagnetic heating coil and an insulating sheath II wrap the outer circle of the lower portion of a lower shell from inside to outside. Insulating gaskets are arranged between the upper end and the lower end of the insulating sheath I and a boss of the lower shell and a bottom end limiting sleeve II respectively, insulating gaskets are arranged between the upper end and the lower end of the electromagnetic heating coil and the boss of the lower shell and the bottom end limiting sleeve II respectively, and insulating gaskets are arranged between the upper end and the lower end of the insulating sheath II and the boss of the lower shell and the bottom end limiting sleeve II respectively. A heating coil wire connected with the electromagnetic heating coil is arranged in the sleeve II. The upper end of the heating coil wire is connected with a wire groove. The electromagnetic heating coil is connected with an inducting heating power source externally arranged through the wire groove. Fuel oil in the oil sprayer can be heated to certain temperature within a short time, the fuel oil spraying effect is good, the spraying effect of a direct injecting gasoline engine in a cylinder is greatly improved, cold-start combustion efficiency is improved, and cold-start tail emission is reduced. The oil sprayer is simple in structure, and it is unnecessary to modify other systems of an internal combustion engine greatly.

Description

technical field [0001] The invention belongs to the technical field of gasoline engine fuel injection systems, and in particular relates to a GDI fuel injector heated by an electromagnetic heating coil. Background technique [0002] With the rapid development of the automobile industry, automobile exhaust emits a large amount of harmful substances, which has caused serious pollution to the atmospheric environment on which human beings depend. The pollutants emitted by gasoline-fueled vehicles mainly come from internal combustion engines, and their harmful components include: carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx) and particulate matter; among them, CO, HC and NOx are vehicle pollutants main component of the control. [0003] During the cold start process of a gasoline engine, on the one hand, due to the low temperature in the cylinder, it is difficult to evaporate the fuel, and the quality of the mixed gas is poor, which is not conducive to the ignit...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a GDI fuel injector with simple structure, low cost and easy processing to solve the problems of poor fuel atomization quality and high pollutant discharge during the cold start process of in-cylinder direct injection gasoline engine, so as to obtain better economic efficiency. performance and emissions

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