CN205225521U - Air inlet channel of diesel engine - Google Patents
Air inlet channel of diesel engine Download PDFInfo
- Publication number
- CN205225521U CN205225521U CN201521129529.XU CN201521129529U CN205225521U CN 205225521 U CN205225521 U CN 205225521U CN 201521129529 U CN201521129529 U CN 201521129529U CN 205225521 U CN205225521 U CN 205225521U
- Authority
- CN
- China
- Prior art keywords
- guide plate
- diesel engine
- air inlet
- intake duct
- spiral
- 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.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model discloses an air inlet channel of diesel engine, include the air inlet of following airflow direction and setting gradually, mild airflow channel, spiral airflow channel, intake duct aditus laryngis, mild airflow channel and spiral airflow channel's intercommunication department have the valve chamber boss, spiral airflow channel along valve chamber boss circumference spiral downwardly extending, and its characterized in that, spiral airflow channel's inboard is equipped with the guide plate of erectting along its hand of spiral, and wide narrow structure is down presented to the guide plate, and the guide plate is used for erectting the rotatory air current that touches this guide plate introduces the intake duct aditus laryngis. Air -fuel mixture was more even in this air inlet channel of diesel engine makeeed the diesel engine combustion chamber, improved the diesel emission level.
Description
Technical field
The utility model relates to diesel engine, particularly a kind of air inlet path for diesel engine.
Background technique
At present, diesel engine with direct injection has two kinds of intake duct forms usually: 1. tangential air flue; 2. helical intake.The former makes air flue turn on cylinder wall, to form eddy current in cylinder; Latter makes air-flow form eddy current before entering cylinder.Helical intake performance is slightly better than tangential air flue, and helical intake is curved helically, and air self forms eddy current at a high speed after intake duct, and swirl rate is large, and flow coefficient is less than normal; Tangential air flue self can not form eddy current, and can only form eddy current by the guiding function of cylinder wall, swirl rate is little, and flow coefficient is large.
In Diesel Engine Development process, suitable intake duct swirl rate (Tai Gao or too low all not all right), larger flow coefficient, reaches with combustion system, firing chamber, oil spout and mates, could realize high power, low oil consumption, the energy-conservation environmental requirement such as low emission.
But conventional helical intake duct and tangential air flue have shortcoming, helical intake flow coefficient is less than normal, affects charging efficiency in cylinder, deficiency of air in cylinder; The swirl rate of tangential air flue is little, affects cylinder air and fuel oil mixture homogeneity, and this all can cause in-cylinder combustion insufficient, and fuel economy is poor, and it is poor to discharge, and difficulty meets the emission regulation demands of increasingly stringent.
So along with the world today is to the demand of energy saving environmental protection product, exploitation one comprehensively spiral and tangential two kinds of intake duct features, had not only had the intake swirl of some strength but also had had the intake duct of enough flow coefficients to be one of the key of development high power, low oil consumption, low discharging straight spray type diesel engine.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present utility model, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Model utility content
The purpose of this utility model is to provide a kind of air inlet path for diesel engine, and the intake swirl with some strength has again enough flow coefficients, meets the requirement of high power, low oil consumption, low-emission diesel.
For achieving the above object, the utility model provides a kind of air inlet path for diesel engine, comprise the suction port set gradually along airflow direction, smooth air flow passage, helical airflow passages, intake duct aditus laryngis, the connectivity part of smooth air flow passage and helical airflow passages has valve cage boss, helical airflow passages is along valve cage boss circumference screw downward-extension, it is characterized in that, the inner side of helical airflow passages is provided with the guide plate of setting along its Hand of spiral, guide plate presents wide lower narrow structure, guide plate is used for the swirling eddy touching this guide plate to erect to introduce intake duct aditus laryngis.
Preferably, smooth air flow passage is obliquely installed along airintake direction, and this angle of inclination is 5 ° ~ 20 °.
Preferably, the area of suction port is 1.1 ~ 1.3 times of the area of intake duct aditus laryngis.
Preferably, the top of guide plate is concordant with valve cage boss.
Preferably, guide plate is by the lower isolation of peaceful for helical airflow passages circulation road of getting a breathing space.
Compared with prior art, the utility model has following beneficial effect: by arranging guide plate wide at the top and narrow at the bottom between the smooth air flow beneath galleries and helical airflow passages of intake duct, thus the peaceful circulation road pipe of getting a breathing space of helical airflow passages forms the air-flow path not exclusively closed, size is compared by controlled vortex flow, improve the flow parameter of helical intake, impel the indoor air-fuel mixture of diesel combustion evenly, improve diesel emission levels.
Accompanying drawing explanation
Fig. 1 is the core perspective view according to air inlet path for diesel engine of the present utility model;
Fig. 2 is the plan view of the core according to air inlet path for diesel engine of the present utility model;
Fig. 3 is the core perspective view of existing air inlet path for diesel engine.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
As shown in Figure 1, it is the core perspective view of a kind of air inlet path for diesel engine according to the utility model embodiment shown in Fig. 1, in the present embodiment, the structure characteristic (reference character in Fig. 1-3 is used for representing the character pair of air inlet path for diesel engine) of the air inlet path for diesel engine of the present embodiment is described with the structure characteristic of core.The suction port 1, smooth air flow passage 2, helical airflow passages 4, the intake duct aditus laryngis 6 that set gradually along airflow direction is comprised according to a kind of air inlet path for diesel engine of the utility model embodiment, smooth air flow passage 2 has valve cage boss 3 with the connectivity part of helical airflow passages 4, helical airflow passages 4 is along the circumferential screw downward-extension of valve cage boss 3, the inner side of helical airflow passages 4 is provided with the guide plate 5 of setting along its Hand of spiral, guide plate 5 presents wide lower narrow structure, and guide plate 5 is used for the swirling eddy touching this guide plate 5 to erect to introduce intake duct aditus laryngis 6.
In such scheme, during air inlet, air-flow enters from suction port 1, after entering helical airflow passages 4 by smooth air flow passage 2, air-flow rotates, when spiral air flow moves to helical airflow passages 4 lower end around valve cage boss 3 axial high speed, under guide plate 5 acts on, spiral air flow change moving direction is converted to tangential gas flow and enters combustion chamber of air cylinder downwards by intake duct aditus laryngis 6, and swirl rate suitably reduces, and effectively improves flow coefficient.
As a kind of preferred embodiment, smooth air flow passage 2 is obliquely installed along airintake direction, and this angle of inclination A is 5 ° ~ 20 ° (see Fig. 2).
As a kind of preferred embodiment, the area of suction port 1 is 1.1 ~ 1.3 times of the area of intake duct aditus laryngis 6.
As a kind of preferred embodiment, the top of guide plate 5 is concordant with valve cage boss 3.
As a kind of preferred embodiment, guide plate 5 is by the lower isolation of peaceful for helical airflow passages 4 circulation road 2 of getting a breathing space.
As a kind of preferred embodiment, between smooth air flow passage 2 bottom of intake duct and helical airflow passages 4, guide plate 5 wide at the top and narrow at the bottom is set, the top of guide plate 5 is concordant with valve cage boss 3, thus the peaceful circulation road 2 of getting a breathing space of helical airflow passages 4 forms the air-flow path not exclusively closed.During air inlet, when spiral air flow moves to helical airflow passages 4 lower end, under guide plate 5 acts on, spiral air flow change moving direction is converted to tangential gas flow and enters combustion chamber of air cylinder downwards by intake duct aditus laryngis 6, swirl rate suitably reduces, and effectively improves flow coefficient.Compared with conventional helical inlet structure, see Fig. 3, air-flow enters from suction port 11, usual helical airflow passages 14 is along the circumferential screw downward-extension of valve cage boss 13, extend to smooth air flow passage 12 region, this structure makes swirl rate too large, and flow coefficient is low.
To sum up, the air inlet path for diesel engine of the present embodiment, by arranging guide plate wide at the top and narrow at the bottom between the smooth air flow beneath galleries and helical airflow passages of intake duct, thus the peaceful circulation road pipe of getting a breathing space of helical airflow passages forms the air-flow path not exclusively closed, size is compared by controlled vortex flow, improve the flow parameter of helical intake, impel the indoor air-fuel mixture of diesel combustion evenly, improve diesel emission levels.
The aforementioned description to concrete exemplary of the present utility model is to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present utility model and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present utility model and various different selection and change.Scope of the present utility model is intended to limited by claims and equivalents thereof.
Claims (5)
1. an air inlet path for diesel engine, comprise the suction port set gradually along airflow direction, smooth air flow passage, helical airflow passages, intake duct aditus laryngis, the connectivity part of described smooth air flow passage and described helical airflow passages has valve cage boss, described helical airflow passages is along described valve cage boss circumference screw downward-extension, it is characterized in that, the inner side of described helical airflow passages is provided with the guide plate of setting along its Hand of spiral, described guide plate presents wide lower narrow structure, described guide plate is used for the swirling eddy touching this guide plate to erect to introduce described intake duct aditus laryngis.
2. air inlet path for diesel engine according to claim 1, is characterized in that, described smooth air flow passage is obliquely installed along airintake direction, and this angle of inclination is 5 ° ~ 20 °.
3. air inlet path for diesel engine according to claim 1, is characterized in that, the area of described suction port is 1.1 ~ 1.3 times of the area of intake duct aditus laryngis.
4. air inlet path for diesel engine according to claim 1, is characterized in that, the top of described guide plate is concordant with described valve cage boss.
5. air inlet path for diesel engine according to claim 1, is characterized in that, described guide plate is by the lower isolation of described helical airflow passages and described smooth air flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521129529.XU CN205225521U (en) | 2015-12-30 | 2015-12-30 | Air inlet channel of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521129529.XU CN205225521U (en) | 2015-12-30 | 2015-12-30 | Air inlet channel of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225521U true CN205225521U (en) | 2016-05-11 |
Family
ID=55900591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521129529.XU Expired - Fee Related CN205225521U (en) | 2015-12-30 | 2015-12-30 | Air inlet channel of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107996525A (en) * | 2017-12-25 | 2018-05-08 | 贵州大学 | A kind of climatic chamber with air-flow regulatory function |
| CN108625977A (en) * | 2018-06-08 | 2018-10-09 | 长春工程学院 | A kind of diesel exhaust reforms laminating combustion system and control method |
-
2015
- 2015-12-30 CN CN201521129529.XU patent/CN205225521U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107996525A (en) * | 2017-12-25 | 2018-05-08 | 贵州大学 | A kind of climatic chamber with air-flow regulatory function |
| CN107996525B (en) * | 2017-12-25 | 2023-07-21 | 贵州大学 | Climate chamber with air flow adjusting function |
| CN108625977A (en) * | 2018-06-08 | 2018-10-09 | 长春工程学院 | A kind of diesel exhaust reforms laminating combustion system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20211230 |