Electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device

Abstract

The invention discloses an electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device. The electromagnetic assisted heating type GDI tar injection device comprises a valve body, a steel ball, a limiting ring and the like, wherein an groove with an upward opening is formed in the valve body; a bottom wall of the groove is an inclined plane which is gradually concaved from the circumferential outer edge to the circle center direction by a certain angle; at least one injection hole is formed in the inclined plane; the limiting ring is a column body and is fixed on the bottom wall of the groove of the valve body to form a central hole for storing the steel ball and at least one circulating hole which is distributed along the circumferential outer edge of the central hole; when the steel ball moves downwards and the steel ball is clamped into the central hole of the limiting ring, the outer surface of the steel ball is fitted with the inclined plane of the bottom wall of the groove of the valve body; the spraying holes are formed below the steel ball. The electromagnetic assisted heating type GDI tar injection device provided by the embodiment of the invention is simple in structure, simple in process and low in manufacturing cost; the atomization effect of fuel tar sprayed by the tar injection device is better, and the working performance and the service life of an engine can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of gasoline engine fuel injection systems, in particular to an electromagnetic auxiliary heating GDI fuel injector. Background technique [0002] At present, many foreign companies and research institutions have developed in-cylinder gasoline direct injection (GDI) products and prototypes. According to data, compared with traditional port injection (PFI), GDI engines do not need the mixed gas to pass through the throttle valve. , so it can reduce the air resistance caused by the throttle valve to the mixed gas, the fuel economy can be increased by about 15%, and the power output can also be increased by about 10%. [0003] The GDI engine adopts in-cylinder direct injection technology, which is similar to the fuel supply technology of a diesel engine. A piston pump provides a gasoline pressure of about 100 bar for the fuel common rail pipe, and the fuel common rail pipe and the electromagnetic auxiliary heati...

AI Technical Summary

Problems solved by technology

In the prior art, when the GDI engine is cold-started, the mixture gas quality is not high, which makes the combustion and emission performance of the engine poor. Therefore, there is an urgent need for an electromagnetically assisted heating GDI injector that can change the fuel temperature, so that according to the engine temperature To meet the needs of different working conditions, improve the atomization state of fuel, improve the combustion quality and emission of the engine

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