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Control method and device of natural gas engine, storage medium and processor

A natural gas and engine technology, applied in the field of natural gas engine control, can solve problems such as reducing knock tendency and reducing knocking

Active Publication Date: 2020-07-10
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present application provides a control method, device, storage medium and processor of a natural gas engine to solve the problem in the related art that after the engine knocks, the ignition advance angle is adjusted to reduce the knocking, and it is difficult to reduce the knocking tendency before the knocking occurs. The problem

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  • Control method and device of natural gas engine, storage medium and processor
  • Control method and device of natural gas engine, storage medium and processor
  • Control method and device of natural gas engine, storage medium and processor

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0028] It should be noted that the terms "first" and "second...

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Abstract

The invention discloses a control method and device of a natural gas engine, a storage medium and a processor. The method comprises the following steps: determining the estimated knock intensity according to the knock intensity change rate of the natural gas engine and the current working condition parameter; judging whether the current knock intensity and the estimated knock intensity meet a first preset condition or not; and when the current knock intensity and the estimated knock intensity meet the first preset condition, reducing an ignition advance angle, and increasing the EGR rate of acylinder during exhaust gas recirculation, so that the knock tendency is reduced. Through the application, the problems in the related art that knocking tendency is weakened by adjusting the ignitionadvance angle after the engine knocks and the knocking tendency is difficult to reduce before knocking are solved.

Description

technical field [0001] The present application relates to the technical field of natural gas engine control, and in particular, relates to a control method, device, storage medium and processor of a natural gas engine. Background technique [0002] Natural gas engines generally use equivalent combustion technology to achieve operation. The combustion temperature in the cylinder is high, the exhaust temperature of the engine is high, and there are differences in the composition of natural gas, the temperature of the intake air and coolant is high, and the calibration of the ignition advance angle is not suitable. Abnormal combustion such as detonation occurs, and in severe cases, the engine may even be scrapped due to cylinder scuffing. [0003] In order to solve the above problems, the exhaust gas recirculation technology (EGR technology) is introduced on the equivalent combustion natural gas engine in the related art to reduce the combustion temperature of the engine and re...

Claims

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Application Information

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IPC IPC(8): F02D43/00
CPCF02D37/02F02D41/0077F02D41/0052F02D35/027F02D41/2422F02D41/0027F02D41/2451F02D2200/101F02D2200/1002F02D2200/0414Y02T10/40
Inventor 曹石王钦普秦涛孙明峰
Owner WEICHAI POWER CO LTD
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