CN218542423U

CN218542423U - Cylinder cover of hydrogen engine

Info

Publication number: CN218542423U
Application number: CN202223058131.4U
Authority: CN
Inventors: 梁德浦; 何化; 肖刚; 吴剑辉; 陈彪; 翟旭润
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-02-28
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a hydrogen engine cylinder head, including the cylinder head body, cylinder head body one side is equipped with a plurality of inlet channel that communicate with each cylinder hole respectively, and is a plurality of inlet channel's air flue entrance corresponds and is equipped with the tracheal flange of being connected with air intake manifold, and is a plurality of tracheal flange's terminal surface bottom is equipped with the shower nozzle jack of installation hydrogen nozzle, the shower nozzle jack extends to from the tracheal flange slope on inlet channel's the chamber wall. The utility model discloses a hydrogen engine cylinder head belongs to the cylinder head and admits air technical field, arranges the shower nozzle jack of hydrogen nozzle in air flue entry below, and in the shower nozzle jack upwards extended to inlet channel to one side, compatible mixing uniformity on the one hand, on the other hand can avoid hydrogen fuel backward flow tempering and leak, guarantees safety.

Description

Cylinder cover of hydrogen engine

Technical Field

The utility model relates to a cylinder head technique of admitting air, more specifically says that it relates to a hydrogen engine cylinder head.

Background

When the hydrogen engine works, hydrogen needs to be fully mixed with air, the hydrogen enters the combustion chamber through the air inlet channel of the cylinder cover, and the ignition system ignites to ignite the mixed gas so as to enable the engine to do work and output power.

Because the combustion characteristic of the hydrogen is very strong, the hydrogen-burning engine has very strict requirements on mixing uniformity and hydrogen backflow, and the hydrogen-burning engine is prevented from backfire and knocking. In order to pursue mixing uniformity, simple structure and universality with a conventional natural gas engine, a part of the hydrogen engine is provided with a hydrogen nozzle which is arranged on a manifold or a main pipe part of an air inlet pipe; or the air passage inlet of the cylinder cover is integral, the air intake of each cylinder can cause hydrogen backflow when being interfered with each other, and the tempering is generated during combustion, so that the reliability of the whole combustion efficiency is influenced. Meanwhile, due to the strong hydrogen permeability, part of the hydrogen backflow may leak from the joint of the cylinder head and the air inlet pipe, which causes a safety problem.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to some not enough of the above-mentioned of prior art, the utility model aims at providing a hydrogen engine cylinder head.

In order to realize the above purpose, the utility model provides a hydrogen engine cylinder head, including the cylinder head body, cylinder head body one side is equipped with a plurality of inlet channel that communicate with each cylinder hole respectively, and is a plurality of inlet channel's air flue entrance corresponds and is equipped with the tracheal flange who is connected with air intake manifold, and is a plurality of tracheal flange's terminal surface bottom is equipped with the shower nozzle jack of installation hydrogen nozzle, the shower nozzle jack extends to from the tracheal flange slope on inlet channel's the chamber wall.

Furthermore, the bottom of the air pipe flange is positioned on two sides of the spray nozzle insertion hole, a plurality of spray nozzle connection holes are formed in the hydrogen gas spray nozzle, and a plurality of groups of bolt structures corresponding to the spray nozzle connection holes are formed in the installation support.

Furthermore, mounting holes connected with the connecting flange of the air inlet manifold are formed in two sides of the top of the air pipe flange.

Furthermore, connecting terminals are arranged on the outer side of the connecting flange of the air inlet manifold in a protruding mode, connecting blocks matched with the end faces of the connecting terminals are arranged on the mounting support, and a threaded connection structure is arranged between the connecting blocks and the connecting terminals.

Furthermore, the center line of the nozzle jack and the center line of the air inlet channel form an alpha included angle which is not more than 45 degrees.

Furthermore, the distance between the orifice at the inner end of the nozzle jack and the inlet of the air passage is L which is more than or equal to 40mm.

Advantageous effects

Compared with the prior art, the utility model discloses a hydrogen engine cylinder head has beneficial effect as follows: this hydrogen engine cylinder head structural design is reasonable, arranges the shower nozzle jack of hydrogen nozzle in air flue entry below, and the shower nozzle jack extends to inlet channel in to one side upwards to be compatible the homogeneity of mixing, and on the other hand can avoid hydrogen fuel backward flow tempering and leak, guarantees safety.

Drawings

Fig. 1 is a perspective view of the structure of the cylinder head of the hydrogen engine of the present invention;

FIG. 2 is a cross-sectional view of the cylinder head of the hydrogen engine of the present invention;

fig. 3 is a front view of the structure of the cylinder head body of the present invention.

In the figure: 1. a cylinder head body; 2. an air intake passage; 3. an airway inlet; 4. a gas pipe flange; 5. a hydrogen gas nozzle; 6. a nozzle insertion hole; 7. a nozzle connecting hole; 8. mounting a support; 9. an intake manifold; 10. a connecting flange; 11. mounting holes; 12. a connection terminal; 13. and (4) connecting the blocks.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention, but are intended to be covered by the appended claims in any way.

The specific embodiment of the utility model is like this: referring to fig. 1-3, a cylinder head of a hydrogen engine comprises a cylinder head body 1, wherein a plurality of air inlet channels 2 respectively communicated with each cylinder hole are arranged on one side of the cylinder head body 1, air passage inlets 3 of the air inlet channels 2 are correspondingly provided with air pipe flanges 4 connected with an air inlet manifold 9, nozzle insertion holes 6 for installing hydrogen nozzles 5 are arranged at the bottom of the end faces of the air pipe flanges 4, and the nozzle insertion holes 6 obliquely extend to the wall of the air inlet channel 2 from the air pipe flanges 4.

In this hydrogen engine cylinder head, hydrogen nozzle 5 directly inserts from the terminal surface tilt up of air pipe flange 4, the spout of each hydrogen nozzle 5 inserts in each inlet channel 2, each air intake manifold 9 of engine intake pipe provides the air through air pipe flange 4 to inlet channel 2 respectively, the air mixes the back with 5 spun hydrogen of hydrogen nozzle, it burns in entering engine cylinder combustion chamber, arrange 3 below of air flue entry with hydrogen nozzle 5's shower nozzle jack 6, shower nozzle jack 6 extends to inlet channel 2 in upwards aslope, compatible mixing uniformity on the one hand, on the other hand can avoid hydrogen fuel backward flow tempering and leak, guarantee safety.

In this embodiment, the bottom of the air pipe flange 4 is located at two sides of the nozzle insertion hole 6 and is provided with nozzle connection holes 7, a plurality of hydrogen nozzles 5 are provided with installation supports 8, the plurality of hydrogen nozzles 5 are installed on the installation supports 8, the installation supports 8 are installed on the air pipe flange 4, so that the front ends of the hydrogen nozzles 5 are inserted into the nozzle insertion hole 6, and the installation supports 8 are provided with a plurality of groups of bolt structures corresponding to the nozzle connection holes 7. Through erection support 8 and air pipe flange 4 connection, can be with a plurality of hydrogen nozzles 5 cartridge in a plurality of shower nozzle jacks 6 simultaneously, the installation is quick, and is fixed firm, can carry out reliable support to hydrogen nozzle 5's afterbody.

In the present embodiment, mounting holes 11 for connecting with the connecting flange 10 of the intake manifold 9 are provided on both sides of the top of the air pipe flange 4.

In this embodiment, a connection terminal 12 is convexly provided on the outer side of the connection flange 10 of the intake manifold 9, a connection block 13 adapted to the end surface of the connection terminal 12 is provided on the mounting support 8, a threaded connection structure is provided between the connection block 13 and the connection terminal 12, the connection block 13 of the mounting support 8 is connected to the connection terminal 12 of the intake manifold 9, the mounting support 8 and the intake manifold 9 can be positioned, and the intake manifold 9 and the hydrogen nozzle 5 can be further mounted on the cylinder head body 1.

In this embodiment, the center line of the nozzle insertion hole 6 and the center line of the air inlet channel 2 form an α angle, the α angle is not greater than 45 degrees, the nozzle insertion hole 6 extends upward in an inclined manner, and the sprayed hydrogen is not easy to flow back.

In this embodiment, the distance between the orifice at the inner end of the nozzle insertion hole 6 and the air flue inlet 3 is L, and L is greater than or equal to 40mm, the distance between the orifice at the inner end of the nozzle insertion hole 6 and the end surface of the air pipe flange 4 of the air flue inlet 3 is long, and fuel gas is not easy to flow back to the joint of the air pipe flange 4 and the air inlet manifold 9, so that leakage is not easy to occur.

The above are only preferred embodiments of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the present invention and the utility of the patent.

Claims

1. The utility model provides a hydrogen engine cylinder head, includes cylinder head body (1), its characterized in that, cylinder head body (1) one side is equipped with a plurality of inlet channel (2) with each cylinder hole intercommunication respectively, and is a plurality of air flue entry (3) department of inlet channel (2) corresponds and is equipped with tracheal flange (4) of being connected with air intake manifold (9), and is a plurality of the terminal surface bottom of tracheal flange (4) is equipped with shower nozzle jack (6) of installation hydrogen nozzle (5), shower nozzle jack (6) extend to from tracheal flange (4) slope on the chamber wall of inlet channel (2).

2. The cylinder head of the hydrogen engine according to claim 1, wherein the bottom of the gas pipe flange (4) is provided with nozzle connecting holes (7) at two sides of the nozzle insertion hole (6), a plurality of hydrogen nozzles (5) are provided with mounting supports (8), and the mounting supports (8) are provided with a plurality of groups of bolt structures corresponding to the nozzle connecting holes (7).

3. A cylinder head for a hydrogen engine according to claim 2, wherein the top of the air pipe flange (4) is provided with mounting holes (11) on both sides thereof for connection with a connecting flange (10) of an intake manifold (9).

4. A cylinder head of a hydrogen engine according to claim 3, wherein a connecting terminal (12) protrudes from the outside of the connecting flange (10) of the intake manifold (9), a connecting block (13) adapted to the end face of the connecting terminal (12) is provided on the mounting seat (8), and a screw connection structure is provided between the connecting block (13) and the connecting terminal (12).

5. A hydrogen engine cylinder head according to claim 1, 2, 3 or 4, characterized in that the center line of the nozzle tip insertion hole (6) and the center line of the intake passage (2) form an angle α which is equal to or less than 45 °.

6. A cylinder head of a hydrogen engine according to claim 5, characterized in that the distance between the orifice at the inner end of the nozzle head insertion hole (6) and the gas duct inlet (3) is L, and L is more than or equal to 40mm.