Center hole pressure accumulator non-static leak injector

Abstract

The invention discloses a middle hole pressure storage static leakage-free oil sprayer, comprising a high speed solenoid valve, a locking screw sleeve, a tapered surface ball valve type switch valve, a control plunger and barrel assembly, an oil sprayer spring, a spring seat, an opening check ring, an oil sprayer body, an oil sprayer assembly and an oil nozzle locking cap; the tapered surface ball valve type switch valve is arranged in a concave cavity in the upper end of the oil sprayer body; the upper end of the oil sprayer body is connected with the high speed solenoid valve by a locking nut; the lower end of the oil sprayer body is connected with the oil nozzle assembly by the oil nozzle locking cap; the control pole plunger and barrel assembly is arranged in a central hole formed along the axis of the oil sprayer body; the central hole of the oil sprayer body and the control pole plunger and barrel assembly form a middle hole pressure storage cavity. The oil sprayer is simple in structure, low in machining cost and convenient to mount, so the production efficiency and product percent of pass are improved.

Description

technical field [0001] The invention relates to the technical field of fuel injection for automobile diesel engines, in particular to a middle hole pressure accumulating non-static leakage fuel injector. Background technique [0002] The high-pressure common rail fuel injection system for diesel engines was developed to cope with emissions above Euro III, and has become the mainstream technology of diesel engine fuel systems. At present, there are three major companies in the world producing high-pressure common rail systems for diesel engines, Japan's Denso, Germany's Bosch, and America's Delphi. In the context of the increasingly serious energy crisis, engine technology is obviously the most critical to reduce fuel consumption of automobiles and develop new energy power; as the requirements for emission standards become higher and higher, the continuous development of diesel engine combustion technology will inevitably be promoted, and the current domestic market Most die...

AI Technical Summary

Problems solved by technology

However, the structure of the single-stage plunger couple with the middle-hole pressure-accumulating structure of the imported technology is very complicated, the processing cost is high, and the cleanliness is also very high, which is not conducive to the mass production of the injector.

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