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Natural gas engine

An engine and natural gas technology, applied in gaseous engine fuel, engine components, combustion engines, etc., can solve the problems of six-cylinder engine cost or compactness that cannot meet the needs of commercial vehicles, so as to speed up the flame propagation speed, reduce the tendency of knocking, Good coordination effect

Inactive Publication Date: 2021-10-08
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of in-line gas engine products above 3L in the domestic and foreign automotive industries, and the six-cylinder engine cannot meet the needs of commercial vehicles in terms of cost and compactness

Method used

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Embodiment Construction

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0034] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be construed as illustrative only and not limiting. Accordingly, other instances of the exemplary embodiment may hav...

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Abstract

The invention discloses a natural gas engine which comprises a cylinder body. The cylinder body comprises an exhaust system, wherein the exhaust system comprises an intake valve and an exhaust valve, the included angle between the intake valve and the exhaust valve is 41 degrees, the included angle of the intake valve is 18 degrees, the included angle of the exhaust valve is 23 degrees, valve seat rings are arranged at the joint of the intake valve and an engine cylinder cover and the joint of the exhaust valve and the engine cylinder cover, three pressing faces are arranged on the side, facing the cylinder cover, of each valve seat ring and form a continuous stepped structure, and an air inlet of the intake valve is further connected with an air inlet manifold, and the whole air inlet manifold is of an Archimedes spiral structure; and a gas system, wherein the gas system comprises a combustion chamber and a piston, the face, facing the piston, of the combustion chamber is an inverted arc face, the top face, facing the combustion chamber, of the piston is provided with a concave part, and the concave part is matched with the arc face. The natural gas engine is a large-power and large-displacement gas engine which is large in cylinder diameter and long in cylinder sleeve. The inevitable problems of easy knocking and difficult combustion of a large-cylinder-diameter engine are solved from the aspects of a combustion system, an ignition system and the like.

Description

technical field [0001] The present invention relates to the technical field of automobile gas power, and more particularly, to a natural gas engine. Background technique [0002] Among various alternative fuels for automobiles, natural gas has attracted much attention because of its cleanness, large reserves, high calorific value, low pollution and good use economy. The development of natural gas vehicles has important practical significance for improving urban air quality and relieving my country's energy pressure. With the completion of the West-East Gas Pipeline Project and the large-scale landing of overseas oil and gas, natural gas is gradually becoming the most important support for energy transformation. [0003] With the promotion of natural gas in the national strategic plan, the proportion of natural gas products has gradually increased in recent years. At the same time, with the implementation of diesel national VI emissions, natural gas products are relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B43/10F02F1/24F02F1/42F02F3/26F02M35/104
CPCF02B43/10F02F1/24F02F1/243F02F1/4264F02M35/104F02F3/26F02B2043/103Y02T10/30
Inventor 丁光辉张辰李凯陆荣荣陈园明赵文仲周涛豆刚张增光王书林刘路
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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