High-capacity dosing fuel injection valve with inductive circuit

Abstract

The invention relates to the technical field of electronic control valves, in particular to a high-capacity quantitative fuel injection valve with an inductance circuit, including a valve body, which is provided with an armature chamber, a high-pressure channel, a pressurized chamber and a valve body from top to bottom. The material storage chamber, the high-pressure passage and the storage chamber are connected through the passage of the storage chamber; the present invention provides a buffer chamber at the bottom of the storage chamber, and the buffer chamber and the high-pressure passage are conditionally connected. When the valve plug is in the closed state, the closed valve top plate and the floating ring are in close contact to form a secondary seal. When the valve plug is in the open state, there is no communication between the buffer chamber and the high-pressure channel, which will not interfere with fuel injection. When the valve plug When it is in the closed state, the floating ring in the buffer chamber is lifted up, quickly reducing the valve opening and lowering the valve plug with resistance, so that the valve can be closed quickly and the gap between the valve plug and the valve seat can be reduced. The impact force prevents the fatigue deformation of the valve seat and ensures the fuel injection quality of the injection hole.

Description

technical field [0001] The invention relates to the technical field of electric control valves, in particular to a high-capacity quantitative fuel injection valve with an inductance circuit. Background technique [0002] The fuel injection valve receives the fuel injection pulse signal sent by the ECU, and precisely controls the fuel injection quantity. The fuel rate is injected into the combustion chamber. In order to achieve an effective fuel injection starting point and precise fuel injection volume, the common rail system uses a special fuel injector with a hydraulic servo system and an electronic control element (solenoid valve). The fuel injector consists of holes similar to traditional fuel injectors Type fuel injector, hydraulic servo system (control piston, control metering hole, etc.), solenoid valve and so on. [0003] In the closing process of the existing valve, in order to quantify accurately, the closing speed of the valve is relatively fast, and the impact ...

AI Technical Summary

Problems solved by technology

[0003] In the closing process of the existing valve, in order to quantify accurately, the closing speed of the valve is relatively fast, and the impact force on the valve seat is relatively large. However, during the pulsed opening and closing process of the injection valve, and because impurities may be mixed in the fuel, Continuously cause pitting and cracks on the valve seat, reduce the fatigue strength of the material, cause nozzle leakage and decline in spray quality, seriously affect fuel combustion efficiency, and cause carbon deposition

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