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A Nozzle Realizing Dual Fuel Injection

A dual-fuel, fuel technology, applied in the direction of fuel injection device, charging system, engine components, etc., can solve problems such as reducing engine power performance, affecting engine charge coefficient, etc., achieving easy implementation, solving the problem of in-cylinder direct injection, The effect of great application value

Active Publication Date: 2018-08-10
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the modification of the intake port supply system is convenient, it directly affects the charge coefficient of the engine and reduces the power performance of the engine

Method used

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  • A Nozzle Realizing Dual Fuel Injection
  • A Nozzle Realizing Dual Fuel Injection

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific embodiment:

[0016] Such as figure 1 As shown, a nozzle for dual fuel injection includes a valve body 1 and a fixed needle valve 14, the fixed needle valve 14 is fixedly arranged in the valve body 1, and the valve body 1 is provided with a first fuel 1 passage 2, Fuel 2 first passage 12, first arc chute, second arc chute, annular oil groove 5, fuel 1 injection hole 6 and fuel 2 injection hole 7, said fuel 1 first passage 2 and first arc chute The chute is connected, the first arc chute and the fixed needle valve 14 form the first arc cavity 15, and the first arc cavity 15 is provided with an interference fit with the first arc cavity 15 and can The movable first arc-shaped slider 3 is provided with a first elastic member 4 between the side of the first arc-shaped slider 3 away from the first channel 2 of the fuel 1 and the first arc-shaped cavity 15; A channel 12 communicates with the ...

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Abstract

The invention provides a nozzle capable of achieving dual fuel injection. The nozzle comprises a valve body and a fixed needle valve. The fixed needle valve is fixedly arranged in the valve body, and a first channel for fuel (1), a first channel for fuel (2), a first arc-shaped sliding groove, a second arc-shaped sliding groove, an annular oil groove, a nozzle hole for fuel (1) and a nozzle hole for fuel (2) are formed in the valve body; the fixed needle valve is provided with a second channel for fuel (1) and a second channel for fuel (2), and an outlet of the second channel for fuel (1) is communicated with the nozzle hole for the fuel (1); an inlet of the second channel for fuel (2) is communicated with a second arc-shaped sealing cavity, and an outlet of the second channel for fuel (2) is communicated with the arc-shaped oil groove; and the valve body is further provided with an oil returning channel for fuel (2), and the oil returning channel for fuel (2) is communicated with the first channel for fuel (2). The fuel supply pressure is changed so as to achieve in-cylinder direct spraying of two kinds of fuel, the in-cylinder direct spraying of a pilot diesel natural gas engine is achieved, the structure is simple, and the nozzle is easy to obtain.

Description

technical field [0001] The invention belongs to the technical field of engine fuel supply systems, in particular to a nozzle for realizing dual fuel injection. Background technique [0002] Gasoline engines and diesel engines are widely used in the field of vehicles and ships due to their high thermal efficiency, good adaptability, and convenient operation. And because of the increase in the number of internal combustion engines and their wide distribution, the impact on energy fuels and environmental pollution is particularly obvious. On the one hand, mainly because internal combustion engines use fossil fuels, and petroleum is not a renewable energy source, based on the current consumption and usage, it may be exhausted in the next few decades, which makes the global energy crisis increasingly prominent. On the other hand, its exhaust gas contains a large amount of harmful substances, causing environmental pollution and endangering human physical and mental health. The w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M43/04F02M61/10
CPCF02M43/04F02M61/10
Inventor 韩丹王谦何志霞谭小强邵长胜
Owner JIANGSU UNIV
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