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Ejection control method and equipment applied to natural gas engine gas supply system

A technology of gas supply system and natural gas, applied in the field of power system, can solve the problems of small pressure difference, response time of voltage stabilizer and insufficient natural gas pressure of voltage stabilization ability.

Active Publication Date: 2020-11-27
WEICHAI POWER CO LTD
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AI Technical Summary

Problems solved by technology

[0005] This application provides an injection control method and equipment applied to the gas supply system of a natural gas engine, which is used to solve the problem of insufficient natural gas pressure due to the response time of the voltage regulator and the problem of the voltage stabilizing ability when the load suddenly increases or the long-term heavy load occurs. The pressure difference between the pressure and the throttle valve is too small

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  • Ejection control method and equipment applied to natural gas engine gas supply system
  • Ejection control method and equipment applied to natural gas engine gas supply system
  • Ejection control method and equipment applied to natural gas engine gas supply system

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Embodiment Construction

[0051] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0052] With the development of power technology, the gas supply system for natural gas engines has begun to be applied. In one example, a voltage regulator is usually installed in the gas supply system of natural gas engines. The voltage regulator can control the injection pressure of natural gas entering the gas rail, and then The injection pressure of natural gas is reduced and stabili...

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Abstract

The invention provides an ejection control method and equipment applied to a natural gas engine gas supply system. The ejection control method comprises the following steps: when determining that an engine is successfully started, determining the difference value between the obtained current natural gas rail pressure actual value and a preset natural gas rail pressure set value to obtain a first difference value; according to the first difference value, carrying out PID closed-loop control operation treatment to obtain the driving duty ratio of an electric control rail pressure adjusting valve; and according to the driving duty ratio, adjusting the working state of the electric control rail pressure adjusting valve to adjust the natural gas rail pressure of the natural gas engine gas supply system. With adoption of the ejection control method, the natural gas ejection precision is improved and stable control over the natural gas rail pressure is realized to improve the engine stability.

Description

technical field [0001] The present application relates to power system technology, in particular to an injection control method and equipment applied to a gas supply system of a natural gas engine. Background technique [0002] With the development of power technology, the natural gas engine gas supply system has begun to be applied, and the natural gas engine gas supply system can be installed in various mechanical equipment. [0003] In the prior art, a voltage stabilizer is usually installed in the gas supply system of the natural gas engine, and the voltage stabilizer can control the injection pressure of the natural gas entering the gas rail, thereby reducing and stabilizing the injection pressure of the natural gas. [0004] However, in the prior art, when the engine load is large or the load suddenly increases, there will be problems with the natural gas pressure due to the response time and voltage stabilization capability of the voltage regulator, such as insufficie...

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Application Information

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IPC IPC(8): F02D41/00F02D41/14F02D41/24
CPCF02D41/0027F02D41/1401F02D41/2467F02D2041/1409F02D2200/0602Y02T10/30
Inventor 曹石秦涛刘楠楠徐同江赵婧如
Owner WEICHAI POWER CO LTD
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