阅读说明：本技术 带有残余废气室的预燃室装置及其安装结构 (Prechamber arrangement with residual exhaust gas chamber and mounting arrangement therefor ) 是由 田宁 张功晖 管永超 刘聪 刘明涛 于 2020-05-01 设计创作，主要内容包括：本发明涉及汽车制造领域,公开了一种带有残余废气室的预燃室装置,包括上端开口的圆柱形的主腔体,主腔体靠近开口一端的内壁上开有一个圆环槽,主腔体的内壁上还开有若干条连通槽,连通槽的一端与圆环槽连通,连通槽的另一端向主腔体封闭的一端延伸,主腔体封闭的一端上开有若干个点火孔。本发明还公开了一种带有残余废气室的预燃室装置的安装结构。本发明一种带有残余废气室的预燃室装置及其安装结构,提高发动机的抗爆性能的同时,增加了发动机稳定燃烧工况区域,有效提高发动机的燃烧效率。(The invention relates to the field of automobile manufacturing, and discloses a pre-combustion chamber device with a residual waste gas chamber, which comprises a cylindrical main cavity body with an opening at the upper end, wherein an annular groove is formed in the inner wall of the main cavity body close to one end of the opening, a plurality of communicating grooves are formed in the inner wall of the main cavity body, one end of each communicating groove is communicated with the annular groove, the other end of each communicating groove extends towards the closed end of the main cavity body, and a plurality of ignition holes are formed in the closed end of the main cavity body. The invention also discloses a mounting structure of the pre-combustion chamber device with the residual exhaust gas chamber. The pre-combustion chamber device with the residual waste gas chamber and the mounting structure thereof can improve the anti-explosion performance of the engine, increase the stable combustion working condition area of the engine and effectively improve the combustion efficiency of the engine.)

1. A prechamber arrangement with residual exhaust gas chamber, comprising a cylindrical main chamber body (1) with an open upper end, characterized in that: open on the inner wall that the main cavity body (1) is close to opening one end has a circular ring groove (2), still open on the inner wall of the main cavity body (1) a plurality of intercommunication grooves (3), the one end of intercommunication groove (3) with circular ring groove (2) intercommunication, the other end in intercommunication groove (3) to the main cavity body (1) confined one end extends, one of the main cavity body (1) confined is served and is opened there are a plurality of ignition hole (4).

2. The prechamber arrangement with residual exhaust gas chamber as set forth in claim 1, characterized in that: the ignition holes (4) are arranged on the closed end of the main cavity body (1) in a tangential spiral mode.

3. The prechamber arrangement with residual exhaust gas chamber as set forth in claim 1, characterized in that: the ignition holes (4) are uniformly distributed around the axis of the cylindrical base body of the main cavity body (1) on the closed end of the main cavity body (1).

4. A mounting structure of a pre-chamber device with a residual exhaust gas chamber according to claim 1, characterized in that: the head of spark plug (5) is covered with main cavity (1), the head of spark plug (5) with form prechamber (6) between the inside bottom of main cavity (1), spark plug (5) with form residual exhaust chamber (7) between circular ring groove (2), through between prechamber (6) and residual exhaust chamber (7) intercommunication groove (3).

5. The mounting structure of the pre-chamber device with residual exhaust gas chamber according to claim 4, characterized in that: and a sealing gasket is padded between the spark plug (5) and the opening end part of the main cavity (1).

6. The mounting structure of the pre-chamber device with residual exhaust gas chamber according to claim 4, characterized in that: the spark plug (5) and the main cavity (1) are in a detachable structure.

7. The mounting structure of the pre-chamber device with residual exhaust gas chamber according to claim 4, characterized in that: the main cavity body (1) is arranged on the cylinder cover through external threads.

Technical Field

The invention relates to the field of automobile manufacturing, in particular to a pre-combustion chamber device with a residual waste gas chamber and an installation structure thereof.

Background

With the increasing increase of fuel consumption and emission regulations, the power density of automobile engines is increasing, and the knocking tendency of the engines is increasing. Some measures taken to solve the knock problem, in turn, can lead to a decrease in the combustion efficiency of the engine, as well as an increase in fuel consumption, ultimately reducing the overall performance level of the engine.

The adoption of the precombustion chamber is a common measure for solving the detonation problem, but in the prior art, the adoption of the precombustion chamber often causes the unstable combustion phenomenon of the engine in a low-load area.

Disclosure of Invention

The invention aims to provide a precombustion chamber device with a residual waste gas chamber and a mounting structure thereof, aiming at overcoming the defects of the prior art, so that the anti-explosion performance of an engine is improved, the stable combustion working condition area of the engine is increased, and the combustion efficiency of the engine is effectively improved.

In order to achieve the purpose, the pre-combustion chamber device with the residual waste gas chamber comprises a cylindrical main cavity body with an opening at the upper end, wherein an annular groove is formed in the inner wall of the main cavity body close to one end of the opening, a plurality of communicating grooves are formed in the inner wall of the main cavity body, one end of each communicating groove is communicated with the annular groove, the other end of each communicating groove extends towards the closed end of the main cavity body, and a plurality of ignition holes are formed in the closed end of the main cavity body.

Preferably, the ignition holes are arranged in a tangential spiral mode on the closed end of the main cavity, and ignition efficiency is improved.

Preferably, the ignition holes are uniformly distributed around the axis of the cylindrical base body of the main cavity body on the closed end of the main cavity body, so that the ignition efficiency is improved.

The utility model provides a mounting structure of antechamber device with residual exhaust chamber, the head of spark plug is covered with the main cavity body, the head of spark plug with form the antechamber between the inside bottom of main cavity body, the spark plug with form residual exhaust chamber between the ring groove, through between antechamber and the residual exhaust chamber the intercommunication groove intercommunication.

Preferably, a sealing gasket is padded between the spark plug and the opening end of the main cavity, so that a closed cavity is formed inside the main cavity.

Preferably, a detachable structure is arranged between the spark plug and the main cavity, and the pre-combustion chamber device does not need to be replaced when a wearing part spark plug is replaced.

Preferably, the main chamber is mounted on the cylinder head by external threads.

Compared with the prior art, the invention has the following advantages:

1. the combustion speed of the ignition type engine is increased by igniting the mixed gas in the pre-combustion chamber and then spreading the mixed gas to the main combustion chamber through the ignition hole to ignite flame;

2. the anti-explosion performance of the engine is improved, and the fuel consumption of the engine is reduced;

3. the concentration of residual waste gas in the precombustion chamber is reduced, the stable combustion working condition area of the engine is increased, and the ignition efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the mounting structure of the pre-chamber arrangement with residual exhaust gas chamber of the present invention;

fig. 2 is a view a-a of fig. 1.

The components in the figures are numbered as follows:

the device comprises a main cavity 1, a circular groove 2, a communicating groove 3, an ignition hole 4, a spark plug 5, a pre-combustion chamber 6 and a residual exhaust gas chamber 7.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1 and 2, the prechamber device with a residual exhaust gas chamber comprises a cylindrical main cavity 1 with an opening at the upper end, wherein an annular groove 2 is formed on the inner wall of the main cavity 1 close to one end of the opening, a plurality of communicating grooves 3 are further formed on the inner wall of the main cavity 1, one ends of the communicating grooves 3 are communicated with the annular groove 2, the other ends of the communicating grooves 3 extend towards the closed end of the main cavity 1, and a plurality of ignition holes 4 are formed in the closed end of the main cavity 1. Wherein, the ignition holes 4 are arranged on the closed end of the main cavity 1 in a tangential spiral way and are uniformly distributed around the axis of the cylindrical matrix of the main cavity 1.

The utility model provides an installation structure of precombustion chamber device with residual exhaust gas chamber, the head of spark plug 5 is covered with main cavity 1, forms precombustion chamber 6 between the head of spark plug 5 and the inside bottom of main cavity 1, forms residual exhaust gas chamber 7 between spark plug 5 and the ring groove 2, communicates through intercommunication groove 3 between precombustion chamber 6 and the residual exhaust gas chamber 7, fills up seal gasket between spark plug 5 and the main cavity 1 opening tip. In this embodiment, a detachable structure is arranged between the spark plug 5 and the main cavity 1, and the main cavity 1 is installed on the cylinder cover through external threads.

The working principle of the embodiment is that the gas in the precombustion chamber 6 is ignited by the spark plug 5, then the flame is spread to the main combustion chamber through the ignition hole 4 at the head of the precombustion chamber 6, the mixed gas in the main combustion chamber is ignited, and the residual waste gas after combustion enters the residual waste gas chamber 7 and is discharged under the action of the movement of the piston. Specifically, by adding the residual waste gas chamber 7, at the end of combustion of the mixed gas, after the combusted residual waste gas enters the residual waste gas chamber 7, the purpose of participating in waste gas discharge is achieved through the reciprocating motion of the piston and the change of the pressure in the cylinder, so that the concentration of the residual waste gas at the head of the spark plug 5 in the pre-combustion chamber 6 is reduced, the ignition condition of the mixed gas is achieved, the anti-explosion performance of the engine is improved, the stable combustion working condition area of the engine is increased, and the combustion efficiency of the engine is effectively improved.

The specific working mode is as follows:

in the compression stroke of the engine, fresh mixed gas in the main combustion chamber flows into the pre-combustion chamber 6, and residual waste gas in the pre-combustion chamber 6 is pressed into the residual waste gas chamber 7, so that the concentration of the residual waste gas at the head of the spark plug 5 is reduced, and the concentration of the mixed gas in the pre-combustion chamber 6 reaches the optimal ignition condition;

at the end of the compression stroke, the spark plug 5 ignites the mixed gas in the precombustion chamber, then the flame is spread to the main combustion chamber through the ignition hole 4 on the precombustion chamber 6, and the mixed gas in the main combustion chamber is ignited, so that the engine does work;

after the mixed gas in the precombustion chamber 6 is combusted, in the exhaust stroke of the engine, the residual waste gas flows from the precombustion chamber 6 to the residual waste gas chamber 7 and the cylinder through the communicating groove 3;

further, in the next intake stroke, residual exhaust gas flows from the residual exhaust gas chamber 7 to the precombustion chamber 6 and the main combustion chamber of the engine by the negative pressure in the cylinder.

In order to keep the residual exhaust gases as small as possible in the prechamber 6, the residual waste chamber 7 is arranged in a volume ratio to the prechamber 6.

To sum up, the pre-combustion chamber device with the residual exhaust gas chamber and the mounting structure thereof can realize that the mixed gas in the pre-combustion chamber 6 is ignited firstly by arranging the main cavity 1 at the head part of the spark plug 5 to form the pre-combustion chamber 6 and the residual exhaust gas chamber 7 and connecting the two air chambers by arranging the plurality of communicating grooves 3, then flame is spread to the main combustion chamber through the plurality of ignition holes 4 on the pre-combustion chamber 6 to ignite the flame, the combustion speed of the ignition type engine is accelerated, the anti-explosion performance of the engine is improved, the fuel consumption of the engine is reduced, and meanwhile, the residual exhaust gas after combustion can enter the residual exhaust gas chamber 7 through the movement of the engine piston to reduce the concentration of the residual exhaust gas in the pre-combustion chamber 6, increase the stable combustion working condition area of the engine and improve the ignition.