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Gas fuel injector variable in injection angle

A technology of gas fuel and injection angle, which is used in charging systems, combustion engines, machines/engines, etc. to improve power and economy, improve blending effect optimization, and increase contact surfaces.

Inactive Publication Date: 2019-11-15
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is impractical to change the time-invariant factors such as the structure of the injection device, the layout scheme, and the structure of the combustion chamber in real time for each working condition.

Method used

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  • Gas fuel injector variable in injection angle
  • Gas fuel injector variable in injection angle
  • Gas fuel injector variable in injection angle

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Such as figure 1 As shown, a gas fuel injector with variable injection angle includes a main injector 1 and a secondary injector 2, and an offset connected to the gas outlet 5 of the main injector 1 is connected below the main injector 1 Nozzle 10, the upper side wall of the offset nozzle 10 is provided with a connection port 13, the connection port 13 communicates with the gas outlet 5 of the auxiliary injector 2, the main injector 1 and the auxiliary injector 2 Both are provided with an air inlet 4, and the injection direction of the main injector 1 in the offset nozzle 10 and the injection direction of the auxiliary injector 2 in the offset nozzle 10 are greater than 0° and less than 180°. In this embodiment, the injection direction of the main injector 1 in the offset nozzle 10 and the injection direction of the auxiliary injector 2 in the offset nozzle 10 are perpendicular to each other for illustration. Such as figure 2 and 3 As shown, the main injector 1 and ...

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Abstract

The invention relates to a gas fuel injector variable in injection angle. The gas fuel injector comprises a main ejector and an auxiliary ejector, an offset spraying pipe communicating with a gas outlet of the main ejector is connected with the lower portion of the main ejector, a connecting port is formed in the upper side wall of the offset spraying pipe, the connecting port communicates with agas outlet of the auxiliary ejector, gas inlets are formed in the main ejector and the auxiliary ejector, and the included angle between the spraying direction of the main ejector in the offset spraying pipe and the spraying direction of the auxiliary ejector in the offset spraying pipe is larger than 0 degree and smaller than 180 degrees. According to the gas fuel injector, the contact surface ofgas fuel and air can be increased, the formation rate of combustible mixed gas is increased to achieve the optimal blending effect, and the problem about optimization of the blending effect in the full-working condition range of an engine is solved.

Description

technical field [0001] The invention relates to an electronically controlled gas injector with variable injection angle, and belongs to the technical field of structural design of fuel supply devices for gas fuel engines. Background technique [0002] With the development of science and technology and the continuous improvement of the industrial level of various countries, air pollution control and energy supply security have increasingly become two basic issues faced by industrialized countries. Compressed natural gas (CNG), mainly composed of methane, is considered to be one of the most promising alternative fuels due to its high H / C ratio and high research octane number (about 130). In addition, the flammability limit of natural gas is relatively wide, and the lower peak combustion temperature under lean conditions reduces the knocking tendency of CNG engines compared with stoichiometric gasoline engines, so that the engine of the same displacement can be improved by incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02
CPCF02M21/0215F02M21/0248F02M21/0257Y02T10/30
Inventor 张兰春章嘉晶王天波
Owner JIANGSU UNIV OF TECH
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