CN109681340A - Engine cylinder cap - Google Patents
Engine cylinder cap Download PDFInfo
- Publication number
- CN109681340A CN109681340A CN201910116780.9A CN201910116780A CN109681340A CN 109681340 A CN109681340 A CN 109681340A CN 201910116780 A CN201910116780 A CN 201910116780A CN 109681340 A CN109681340 A CN 109681340A
- Authority
- CN
- China
- Prior art keywords
- cylinder cap
- engine cylinder
- mosaics
- exhaust duct
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
- F02F1/4271—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels with an exhaust liner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
Abstract
The invention discloses a kind of engine cylinder caps.The engine cylinder cap has air intake duct and exhaust duct, and the exhaust duct is two, is separated by next door, for the high-temperature gas discharge after combustion chambers burn is done work；The next door uses steel mosaics using casting, mosaics is inlayed.The engine cylinder cap, and can be according to the different ingredients for adjusting steel of row's temperature, to greatly improve the Thermal fatigue properties of cylinder cap by inlaying casting using steel mosaics in the highest two exhaust duct middle positions of thermal stress.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of engine cylinder cap.
Background technique
Current international engine (including diesel engine, gasoline engine and other kinds of internal combustion engine) is all improving its power
Density, with the raising of engine power density, row's temperature of engine is higher and higher, and even up to 800 DEG C or more, when row's temperature increases
After height, exhaust duct of cylinder cover position is easy to happen crack fault, and the way of industry universal is shape at change exhaust duct, energy at present
Enough improve the Thermal fatigue properties of cylinder cap, but increase rate is limited, with the further promotion of power density, arrange temperature into one
Step increases, and still can generally crack at 750 DEG C or more in two exhaust outlet middle positions, i.e., simply changes doing for shape
Method can not solve the problems, such as that cylinder cap is split.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of simple and reasonable engine cylinder cap, which passes through
Casting is being inlayed using steel mosaics in thermal stress highest two exhaust duct middle positions, to greatly improve cylinder cap
Thermal fatigue properties.
To achieve the above object, the present invention provides a kind of engine cylinder cap, which has air intake duct
And exhaust duct, the exhaust duct are two, are separated by next door, for the high-temperature gas discharge after combustion chambers burn is done work；
The next door uses steel mosaics using casting, mosaics is inlayed.
In a preferred embodiment, engine cylinder cap is body structure.
In a preferred embodiment, engine cylinder cap is mounted in cylinder block.
Compared with prior art, engine cylinder cap according to the present invention has the following beneficial effects: the cylinder
It covers by inlaying casting using steel mosaics in the highest two exhaust duct middle positions of thermal stress, and can be according to row
The ingredient of the different adjustment steel of temperature, to greatly improve the Thermal fatigue properties of cylinder cap.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the engine cylinder cap of first embodiment according to the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
A key zero as conventional internal combustion of engine cylinder cap according to the preferred embodiment of the invention
Part and cylinder block, cylinder jacket form the basic framework of engine together.Engine cylinder cap is installed on cylinder block, engine
Cylinder jacket is installed in the cylinder-bore of cylinder block, and the combustion chamber of cylinder head and piston, cylinder jacket composition engine, piston is in gas
It is reciprocating in cylinder sleeve.Valve actuating mechanism and the cover are installed above cylinder head.
As shown in Figure 1, engine cylinder cap 1 is a body structure, cabinet is interior by air flue, valve mounting struction, cylinder head
Bolt hole pillar, oilhole pillar, stomata pillar and these structure peripheries water jacket cavity composition, structure is complicated, and casting is difficult.Hair
Water jacket cavity is full of coolant liquid when motivation works, and coolant liquid enters block jacket and cooled down to cylinder jacket and take away engine
The waste heat generated when acting；Then coolant liquid enters cylinder head in the upper water hole in water hole and cylinder head by head gasket
Necessary cooling is carried out to the positions such as ridge area, valve and valve retainer, cylinder head bottom plate in water jacket.
The air flue of engine cylinder cap 1 includes: air intake duct and exhaust duct 2, wherein exhaust duct 2 is two, passes through next door 3
It separates, for the high-temperature gas discharge after combustion chambers burn is done work.With the raising of engine power density, the row of engine
Temperature is higher and higher, and even up to 800 DEG C or more, after row's temperature increases, the position in next door 3 is easy to happen crack fault.
Preferably, before casting, metal or non-metal workpiece are placed in casting mold, then pours using casting is inlayed for next door 3
Enter molten metal, after cooled and solidified, these parts are just closely embedded in be poured metal casting, become an entirety,
This process is known as inlaying casting, referred to as castingin.Resulting casting can be described as inlaying casting, and the part being panelized is known as
Mosaics.Next door 3 is to inlay casting, and mosaics uses steel mosaics.
Steel mosaics can be according to the ingredient of the different adjustment steel of row's temperature, to greatly improve the thermal fatigue resistance energy of cylinder cap
Power.
To sum up, the engine cylinder cap in the highest two exhaust duct middle positions of thermal stress using steel by being inlayed
Body inlays casting, and can be according to the ingredient of the different adjustment steel of row's temperature, to greatly improve the Thermal fatigue properties of cylinder cap.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (3)
1. a kind of engine cylinder cap, which is characterized in that the engine cylinder cap has air intake duct and exhaust duct, the exhaust duct
It is two, is separated by next door, for the high-temperature gas discharge after combustion chambers burn is done work；The next door, which uses, inlays casting
It makes, mosaics uses steel mosaics.
2. engine cylinder cap as described in claim 1, which is characterized in that the engine cylinder cap is body structure.
3. engine cylinder cap as claimed in claim 2, which is characterized in that the engine cylinder cap is mounted on cylinder block
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910116780.9A CN109681340A (en) | 2019-02-15 | 2019-02-15 | Engine cylinder cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910116780.9A CN109681340A (en) | 2019-02-15 | 2019-02-15 | Engine cylinder cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109681340A true CN109681340A (en) | 2019-04-26 |
Family
ID=66195903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910116780.9A Pending CN109681340A (en) | 2019-02-15 | 2019-02-15 | Engine cylinder cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681340A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0730085A1 (en) * | 1995-02-28 | 1996-09-04 | Yamaha Hatsudoki Kabushiki Kaisha | A cylinder head and a method for producing a valve seat |
| JP2005118862A (en) * | 2003-10-20 | 2005-05-12 | Nissan Motor Co Ltd | Device for molding sand core, and cylinder head |
| CN104727968A (en) * | 2013-12-19 | 2015-06-24 | 曼卡车和巴士股份公司 | Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine |
| CN105940212A (en) * | 2014-01-20 | 2016-09-14 | 尼玛克股份有限公司 | Cast part and insert for such a cast part |
| CN106762193A (en) * | 2016-12-21 | 2017-05-31 | 东风商用车有限公司 | A kind of four-valve engine cylinder head of efficient cooling |
| CN107061040A (en) * | 2016-01-27 | 2017-08-18 | 福特环球技术公司 | Ignition type liquid-cooled internal combustion engine with cooling cylinder cover |
-
2019
- 2019-02-15 CN CN201910116780.9A patent/CN109681340A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0730085A1 (en) * | 1995-02-28 | 1996-09-04 | Yamaha Hatsudoki Kabushiki Kaisha | A cylinder head and a method for producing a valve seat |
| JP2005118862A (en) * | 2003-10-20 | 2005-05-12 | Nissan Motor Co Ltd | Device for molding sand core, and cylinder head |
| CN104727968A (en) * | 2013-12-19 | 2015-06-24 | 曼卡车和巴士股份公司 | Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine |
| CN105940212A (en) * | 2014-01-20 | 2016-09-14 | 尼玛克股份有限公司 | Cast part and insert for such a cast part |
| CN107061040A (en) * | 2016-01-27 | 2017-08-18 | 福特环球技术公司 | Ignition type liquid-cooled internal combustion engine with cooling cylinder cover |
| CN106762193A (en) * | 2016-12-21 | 2017-05-31 | 东风商用车有限公司 | A kind of four-valve engine cylinder head of efficient cooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |