CN207634194U - Cylinder cap of single-cylinder diesel engine with cooling trigonum function - Google Patents

Abstract

The utility model is related to cylinder cover for diesel engine, especially have the cylinder cap of single-cylinder diesel engine of cooling trigonum function.The cylinder head has cylinder cover, and air intake duct, exhaust duct, mounting hole of oil sprayer and nozzle opening are equipped on cylinder cover, and the fuel injector above mounting hole of oil sprayer is slant setting between air intake duct and exhaust duct, the mounting hole of fuel injector is mainly to be arranged close at the position of the air intake duct and separate exhaust duct, the small through hole of both perforations is equipped between the air intake duct and exhaust duct, several cooling water road junctions are arranged in the wall surface surrounding of lid, and being interconnected in lid forms water channel.To solve nozzle opening close to air inlet, trigonum temperature is high, and fuel injector hot and cold alternation is easily broken off, and nozzle opening wall thickness is small, and trigonum section is small, and trigonum is easy overheat, and waste gas burning is insufficient, the high problem of the whole discharge capacity of bazardous waste.

Description

Cylinder cap of single-cylinder diesel engine with cooling trigonum function

Technical field

The utility model is related to cylinder cover for diesel engine, more particularly, to the single cylinder diesel gas with cooling trigonum function Cylinder cap.

Background technology

Single cylinder diesel is simple in structure, and organization of production is comparatively easy, and price is cheap, has gradually formed special with China The single cylinder engine ranks of color, it is suitble to the lower national conditions of purchasing power of the long-term use habit and current rural area in China rural area, still The low price competition of single cylinder diesel and product homogeneity and horizontal repetition also make being short of power for enterprise technology upgrading, and And environmental regulation was increasingly strict in recent years, single cylinder diesel is simple in structure, and organization of production is comparatively easy, and price is cheap.And The combustibility of the most important measurement index of diesel engine, be in cylinder head fuel injection angle degree, cylinder head water channel area, " trigonum（Oil nozzle hole site and between）" have a significant impact, therefore, directly affect the working performance of diesel engine, traditional bavin Oil machine have by setting deviate atomizer for reducing trigonum temperature, also have cooling water be arranged in cylinder wall by setting Road with reduce trigonum temperature, but combined offset injector changes spray angle, adds injector copper sheathing, increases spray Wall thickness, spirally inlet air mouth and the through-hole being arranged between air inlet and gas outlet of oily device copper sheathing, are come with several means synthesis in this way Improve the cooling problem of oil spout porose area, it will be able to avoid traditional cylinder head in fuel injector installation site using no copper sheathing structure, spray Oilhole wall thickness causes nozzle opening lug, intake and exhaust insert lug to be formed by trigonum section very little, and the section is by water channel Core is molded, and too small section sand core strength is low, easily causes local scab, and the cooling poor fuel injector oil temperature that easily leads in trigonum is high, It is not thus well positioned to meet design and requirement, the air inlet of last traditional cylinder cap of single-cylinder diesel engine and gas outlet Between do not have through-hole so that trigonum heat dissipation is insufficient, but individual cases may cause inlet charge insufficient, but comprehensive Effect improves a lot for conjunction, not only can effectively improve the cooling problem in nozzle opening area, moreover it is possible to the air in cylinder made More fully mixed with fuel oil, burning is more thorough.More outstanding is that can also so that waste gas burning is more abundant, bazardous waste Whole discharge capacity decline, due to there may be deficiency of air so this product uses spirally inlet air mouth to solve, tradition The problem of tangential admission mouth deficiency of air of single cylinder diesel.

Invention content

It is above-mentioned to solve the purpose of this utility model is to provide a kind of good diesel engine cylinder cover of trigonum cooling effect The problem of being proposed in background technology.

To solve the above-mentioned problems with reduce cost, reduce environmental pollution, the utility model provides the following technical solutions：Tool There is the cylinder cap of single-cylinder diesel engine of cooling trigonum function, there is cylinder cover, and equipped with air intake duct, row on cylinder cover Air flue, mounting hole of oil sprayer and nozzle opening, and the fuel injector above mounting hole of oil sprayer is slant setting in air intake duct and row Between air flue, the mounting hole of fuel injector is mainly to be arranged close at the position of the air intake duct and separate exhaust duct, It is equipped with the small through hole of both perforations between the air intake duct and exhaust duct, several cooling water channels are arranged in the wall surface surrounding of lid Mouthful, it is interconnected in lid and forms water channel.

Preferably, being equipped with the copper bush of fuel injector that can coordinate with it in the nozzle opening.

Preferably, the copper bush of fuel injector is made of two sections of different abutment sleeves of inner diameter size, including upper part The internal diameter of the second sleeve of first sleeve and lower part, first sleeve and second sleeve is respectively 19mm, 8mm.

Preferably, first sleeve is formed by the different both ends sleeve combination of wall thickness, including upper part Thick-walled sleeve body and lower part thin-wall sleeve cylinder, wall thickness divides 2.4mm, 1.6mm.

Preferably, air intake duct is spiral air flue in the cylinder cover for diesel engine, including air passage outlet chamber, helical cavity, The air passage outlet chamber is in frustum shape, and air passage outlet chamber is located at the central axis of helical cavity.

Compared with prior art, the atomizer of offset, the injector copper sheathing added, the increase of copper sheathing wall thickness, spirally into Gas port, the through-hole between air inlet gas outlet, three kinds of modes integrate the cooling problem for relying and changing oil spout bore region, greatly can be with Effective to improve in the traditional cylinder head of design, fuel injector installation site does not use copper sheathing structure, to which nozzle opening wall thickness is small The problem of causing nozzle opening lug, intake and exhaust insert lug to be formed by trigonum section very little, adding itself：The section by Water channel core is molded, and too small section sand core strength is low, easily causes local scab, trigonum cooling is poor easily, fuel injector oil temperature mistake It is high.So this product can meet design and requirement so that waste gas burning is more abundant, bazardous waste it is whole Body discharge capacity declines, but there may be deficiency of air so this product uses spirally inlet air mouth to solve traditional single cylinder bavin The problem of tangential admission mouth deficiency of air of oil machine.

Description of the drawings

The utility model is further illustrated below in conjunction with the accompanying drawings.

Fig. 1 is the front cross-sectional structural schematic diagram of the utility model；

Fig. 2 is the overlooking structure diagram of the utility model；

Fig. 3 is the side, sectional structural schematic diagram of the utility model.

In figure：1, cylinder cover；2, air intake duct；3, exhaust duct；4, nozzle opening erector；5, nozzle opening；6, fuel injector copper Set；7, the first sleeve；8, second sleeve；9, through-hole；10, the thick-walled sleeve body of upper part；11, the thin-wall sleeve cylinder of lower part.

Specific implementation mode

As shown in Figure 1, Figure 2 and Figure 3, the cylinder cap of single-cylinder diesel engine with cooling trigonum function of the utility model, With cylinder cover 1, air intake duct 2, exhaust duct 3, mounting hole of oil sprayer 4 and nozzle opening 5 are equipped on cylinder cover 1.

Between the air intake duct 2 and exhaust duct 3, mounting hole of oil sprayer 4 is mounted on and leans on 4 slant setting of mounting hole of oil sprayer At the nearly air intake duct 2, the position far from exhaust duct 3.So that fuel injector is arranged close at air inlet, far from gas outlet, To solve nozzle opening close to air inlet, trigonum temperature is easy to increase, and fuel injector hot and cold alternation is easily broken off.And originally Nozzle opening wall thickness is small to cause nozzle opening lug, intake and exhaust insert lug to be formed by trigonum section very little, and trigonum was easy Heat, the utility model in nozzle opening 5 by being equipped with the copper bush of fuel injector 6 that can coordinate with it, and copper bush of fuel injector 6 is by two sections Diameter abutment sleeve composition of different sizes, including the first sleeve 7 of upper part and the second sleeve 8 of lower part, the first sleeve 7 And the internal diameter of second sleeve 8 is respectively 19mm, 8mm, moreover the first sleeve 7 is by two different end caps of wall thickness Cylinder is composed, the thin-wall sleeve cylinder 11 of thick-walled sleeve body 10 and lower part including top half, wall thickness point 2.4mm、1.6mm.To solve, trigonum section is small caused by nozzle opening lug, intake and exhaust insert lug, section sand core is strong It spends low, causes local scab, to coordinate lid internal face surrounding to arrange several cooling water road junctions by increasing area of section, It forms water channel 12 with being interconnected in lid jointly and reaches cooling trigonum, reduce the technique effect of trigonum temperature.This reality In novel, the through-hole 9 between 2 gas off-take 3 of air intake duct can be followed the exhaust gas discharged in exhaust duct 3 by small through hole 6 Loopback flows in air intake duct 2, to keep waste gas burning more abundant, therefore can make the whole of the bazardous wastes such as exhaust gas particle object Body discharge capacity declines, and environmental protection reaches the discharge standard of state IV, and the utility model air intake duct 2 is spiral air flue, including gas Road outlet plenum, helical cavity, 3 chamber of air passage outlet are in frustum shape, and the air passage outlet chamber is located at the central axis of helical cavity.So that Air intake duct flow increases, and increase capacity keeps air more fully mixed with fuel oil to keep air inflow more sufficient, and burning is more thorough, And the increase of capacity keeps intake and exhaust more abundant, intake and exhaust matching is more reasonable.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation Involved claim.

Claims (5)

1. a kind of cylinder cap of single-cylinder diesel engine with cooling trigonum function, it is characterised in that：Including cylinder cover（1）, institute State cylinder cover（1）It is equipped with air intake duct（2）, exhaust duct（3）, mounting hole of oil sprayer（4）And nozzle opening（5）The oil spout Device mounting hole（4）, mounting hole of oil sprayer（4）Slant setting is in the air intake duct（2）And exhaust duct（3）Between, the fuel injector Mounting hole（4）It is arranged close to the air intake duct（2）, far from exhaust duct（3）Position at, in the air intake duct（2）And row Air flue（3）Between be equipped with perforation both small through hole（9）, the wall surface surrounding of the lid arranges several cooling water road junctions, described Cooling water road junction is interconnected in lid and forms water channel（12）.

2. the cylinder cap of single-cylinder diesel engine with cooling trigonum function according to claim 1, it is characterised in that：It is described Nozzle opening（5）It is interior equipped with the copper bush of fuel injector that can coordinate with it（6）.

3. the cylinder cap of single-cylinder diesel engine with cooling trigonum function according to claim 2, it is characterised in that：It is described Copper bush of fuel injector（6）It is made of two sections of different abutment sleeves of inner diameter size, includes the first sleeve of upper part（7）And lower part The second sleeve divided（8）, first sleeve（7）And second sleeve（8）Internal diameter be respectively 19mm, 8mm.

4. the cylinder cap of single-cylinder diesel engine with cooling trigonum function according to claim 3, it is characterised in that：It is described The first sleeve（7）It is to be formed by the different both ends sleeve combination of wall thickness, including the thick-walled sleeve body of upper part（10）With And the thin-wall sleeve cylinder of lower part（11）, wall thickness divides 2.4mm, 1.6mm.

5. having the cylinder cap of single-cylinder diesel engine of cooling trigonum function according to claim 1, it is characterised in that：It is described into Air flue（1）For spiral air flue, including air passage outlet chamber, helical cavity, the air passage outlet chamber is in frustum shape, and the air flue goes out Oral cavity is located at the central axis of helical cavity.