CN201865812U - Communicated and combined inlet channel device of four-valve diesel - Google Patents
Communicated and combined inlet channel device of four-valve diesel Download PDFInfo
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- CN201865812U CN201865812U CN2010206004836U CN201020600483U CN201865812U CN 201865812 U CN201865812 U CN 201865812U CN 2010206004836 U CN2010206004836 U CN 2010206004836U CN 201020600483 U CN201020600483 U CN 201020600483U CN 201865812 U CN201865812 U CN 201865812U
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Abstract
The utility model discloses a communicated and combined inlet channel device of a four-valve diesel. A communicated air inlet is arranged on a dividing wall between a tangential inlet channel and a spiral inlet channel to enable air currents in the two inlet channels to be communicated. The tangential air current and the spiral air current are blended in an interlacing manner before entering into a cylinder, then continue to be blended deeply after entering into the cylinder. Totally, the two air currents are blended twice in sequence to form more local turbulent fluids, thereby effectively improving the generation condition of oil gas mixture, and achieving good oil gas mixture effect; because of more sufficient burning, the economical efficiency and the dynamic property of the diesel are effectively improved, the generation of NOx and particles is reduced, and the tail gas emission index is greatly improved; and compared with separated inlet channels, the communicated and combined inlet channel has very small cast process changes, is suitable for batch production, and can be applied to an inlet channel of a two-valve diesel.
Description
Technical field
The utility model belongs to internal-combustion engine technology, is specifically related to a kind of art designs of four-valve diesel engine intake duct.
Background technique
Intake duct is the important structure on the motor, and the design of good intake duct is for the crucial especially technology of cylinder cap overhead type diesel engine.Along with the improving constantly of diesel technology, four-valve diesel engine is popularized, and has obtained good market effect in recent years.Each cylinder of four-valve diesel engine has two intake ducts, general pattern is tangential inlet duct and spiral inlet duct, independently of one another, the tangential admission that produced stream and spirally inlet air flow point do not enter cylinder through separately air flue, two strands of airflow collisions interweave in cylinder, form turbulent flow, mix with diesel oil simultaneously, guarantee the exhaust emissions of acting of diesel engine normal combustion and cleaning.Therefore, intake duct also is one of key technology of diesel combustion efficient.
Before address, at present two intake ducts of four-valve diesel engine are independently of one another, tangentially do not disturb mutually with spirally inlet air, two strands of air-flows could mix and mixing for once after entering cylinder.Hysteresis time difference during mixing and only air-flow mix, and have shortened the incorporation time and the process of tangential gas flow and spiral air flow to a certain extent, so have influence on mixed admission again with the oil gas mixed effect of diesel oil.This fuel economy to diesel engine, power character, smoke intensity and exhaust emissions all can exert an influence, particularly international and domestic increasingly stringent for the automotive emission standard, reducing exhaust emissions has become the primary goal of diesel engine industry research and development, is that the institute of the utility model target asks and improve the intake duct design deficiency.
Summary of the invention
The purpose of this utility model is,, spirally inlet air tangential at present four valve separated type intake ducts flows mixed once, incorporation time hysteresis, influences the present situation of oil gas mixed effect, a kind of four-valve diesel engine communication type composite air intake duct device is proposed, to improve above-mentioned defective.
Below in conjunction with accompanying drawing know-why of the present utility model and structure are described.Four-valve diesel engine communication type composite air intake duct device mainly comprises tangential inlet duct, spiral inlet duct and cylinder (as Fig. 1).The separated type intake duct (as Fig. 2) that present stage extensively adopts, promptly two intake ducts are independently of one another, and tangential admission and spirally inlet air do not disturb mutually, and two strands of air-flows could mix after entering cylinder, and for once mix.Key of the present utility model is to be provided with to be communicated with suction port on the partition between tangential inlet duct and the spiral inlet duct, makes the airflow connection in two intake ducts of tangential inlet duct and spiral inlet duct.By the comparison of Fig. 1 and Fig. 2, communication type composite air intake channel ratio separated type intake duct has airflow pattern in the more cylinder as can be seen.Be that streamlined connection suction port makes that two kinds of air-flows have just begun to mix before entering cylinder, the mixing that is interlaced with one another of tangential gas flow, spiral air flow, proceed secondary deeply mixing after entering cylinder, twice mixing forms turbulent flow, effectively improved the formation condition that oil gas mixes, made that burning is more abundant.
The beneficial effect of characteristics of the present utility model and generation is,Compare with the separated type intake duct, communication type composite air intake road casting technique changes very little, is fit to produce in batches.Four-valve diesel engine communication type composite air intake duct device, characteristics are that two kinds of air-flows have just begun to mix before entering cylinder, continue deeply to mix after entering cylinder, twice totally mixing successively, form more local turbulent flow, effectively improve the formation condition that oil gas mixes, reached good oil gas mixed effect.Because burning is more abundant, so effectively improved Economy, the power character of diesel engine and reduced NOx and the generation of particulate matter, the exhaust emissions index is greatly improved.
Description of drawings
Fig. 1 is the utility model principle and structural representation, and figure intermediate cam shape arrow is represented the airflow pattern and the flow direction.
Fig. 2 is a separated type intake duct structural representation.
Embodiment
Below in conjunction with accompanying drawing and by embodiment structural principle of the present utility model is described further.Four-valve diesel engine communication type composite air intake duct device mainly comprises tangential inlet duct 1, spiral inlet duct 2 and cylinder 3.On the partition between tangential inlet duct 1 and the spiral inlet duct 2, be provided with and be communicated with suction port 4, make the airflow connection in tangential inlet duct 1 and 2 two intake ducts of spiral inlet duct.The entrance section of tangential inlet duct 1 and spiral inlet duct 2 is long-pending to be equated.The design that is communicated with inlet structure is applicable to two valve diesel intake ducts too.
The long-pending equal 1496mm that is of the tangential inlet duct 1 of present embodiment and the entrance section of spiral inlet duct 2
2, connecting port 4 casts out simultaneously on the partition between two air flues, sectional area 498 mm
2, the edge is streamlined, adapts to air motion.In the air inlet starting stage, move in tangential gas flow, spiral air flow edge air flue separately, when arriving communication port 4, tangential gas flow, spiral air flow each some branch to carries out mixing first time in the other side's air flue, bring tangential kinetic energy, spiral kinetic energy into the other side air flue simultaneously, interaction effect forms more local turbulent flow.After entering cylinder, two strands of air-flows continue mutual collision, mix for the second time, and turbulent flow will peak, and have created optimum condition for diesel oil and Air mixing, burn then, by air outlet flue 5 discharge waste gas after burning.
Claims (2)
1. four-valve diesel engine communication type composite air intake duct device, comprise tangential inlet duct (1), spiral inlet duct (2) and cylinder (3), it is characterized in that on the partition between tangential inlet duct (1) and the spiral inlet duct (2), being provided with and be communicated with suction port (4), make the airflow connection in tangential inlet duct (1) and (2) two intake ducts of spiral inlet duct.
2. according to the described four-valve diesel engine communication type of claim 1 composite air intake duct device, the entrance section of described tangential inlet duct (1) and spiral inlet duct (2) is long-pending to be equated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206004836U CN201865812U (en) | 2010-11-11 | 2010-11-11 | Communicated and combined inlet channel device of four-valve diesel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206004836U CN201865812U (en) | 2010-11-11 | 2010-11-11 | Communicated and combined inlet channel device of four-valve diesel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865812U true CN201865812U (en) | 2011-06-15 |
Family
ID=44136969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206004836U Expired - Lifetime CN201865812U (en) | 2010-11-11 | 2010-11-11 | Communicated and combined inlet channel device of four-valve diesel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984244A (en) * | 2010-11-11 | 2011-03-09 | 东风朝阳柴油机有限责任公司 | Communicated composite inlet channel system for four-valve diesel engine |
| CN104314719A (en) * | 2014-08-22 | 2015-01-28 | 中国北方发动机研究所(天津) | Two-stroke diesel engine admission passage |
-
2010
- 2010-11-11 CN CN2010206004836U patent/CN201865812U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984244A (en) * | 2010-11-11 | 2011-03-09 | 东风朝阳柴油机有限责任公司 | Communicated composite inlet channel system for four-valve diesel engine |
| CN104314719A (en) * | 2014-08-22 | 2015-01-28 | 中国北方发动机研究所(天津) | Two-stroke diesel engine admission passage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG CHAOYANG DIESEL CO., LTD. Free format text: FORMER OWNER: DONGFENG CHAOYANG DIESEL ENGINE CO., LTD. Effective date: 20120412 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120412 Address after: 122000 the Yellow River Road, Liaoning, No. 3, No. 51, No. Patentee after: Dongfeng Chaoyang Chaochai Power Co., Ltd. Address before: 122000 the Yellow River Road, Liaoning, No. 3, No. 51, No. Patentee before: Dongfeng Chaoyang Diesel Engine Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Communicated and combined inlet channel device of four-valve diesel Effective date of registration: 20190612 Granted publication date: 20110615 Pledgee: Lingyuan steel enterprise limited liability company Pledgor: Dongfeng Chaoyang Chaochai Power Co., Ltd. Registration number: 2019210000021 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |