CN201982207U - Inlet channel of direct injection gasoline engine in turbocharging cylinder - Google Patents
Inlet channel of direct injection gasoline engine in turbocharging cylinder Download PDFInfo
- Publication number
- CN201982207U CN201982207U CN2011200259287U CN201120025928U CN201982207U CN 201982207 U CN201982207 U CN 201982207U CN 2011200259287 U CN2011200259287 U CN 2011200259287U CN 201120025928 U CN201120025928 U CN 201120025928U CN 201982207 U CN201982207 U CN 201982207U
- Authority
- CN
- China
- Prior art keywords
- inlet channel
- air passage
- direct injection
- engine
- air flue
- 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 - Lifetime
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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
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to an inlet channel of a direct injection gasoline engine in a turbocharging cylinder, which is used for improving the system tumble ratio of the direct injection gasoline engine and comprises an air passage body and an air passage throat. After the inlet channel is improved, the part of the outer side of the air passage body, which is intersected with the air passage throat, is provided with a circular arc transition face, and the circular arc radius (R) of the circular arc transition face is 130-145mm. In the inlet channel of the direct injection gasoline engine in the turbocharging cylinder, through reasonably arranging the circular arc transition face and an inlet channel outline between the inlet channel and the air passage throat, the surface contact of gasoline spray and the wall surface of an air passage is reduced, and the combustion efficiency is improved; the circulating capacity of the air passage of the engine is fully utilized to improve the inlet tumble ratio strength, so that the oil gas mixing is evener, and the combustion state of the engine is improved. After improvement, as demonstrated by a test, the inlet channel is capable of achieving the goal of improving the tumble ratio strength, and moreover, a gas mixture is more evenly mixed so as to improve the combustion efficiency of the engine.
Description
Technical field
The utility model relates to a kind of engine components, and particularly turbosupercharging in-cylinder direct injection petrol engine air inlet belongs to technical field of automobile engine.
Background technique
Along with the continuous lifting of auto output and technical merit, the Consumer also improves the requirement of automotive performance index thereupon, and motor is as the heart of automobile, for each index of correlation of automobile provides the most direct support.At the motor that influences one of automotive performance index major reason, motor car engine air ducting system reasonable in design can improve engine combustion significantly, when the output of powerful power is provided, effectively improves the fuel economy, discharging of automobile etc.At present, direct injection spark ignition engine is a kind of advanced technology in the engine combustion technical field, and it can optimize the air inlet mixing efficiency, has brought great development potentiality with effectively power output and low pollution emission for low displacement engine.But also there are some problems in the direct injection spark ignition engine technology, as: the gasoline spraying contacts with the intake duct wall and easily forms drop inflow firing chamber, influences combustion efficiency; It is lower that stream rolls in some vehicle engine air flue system, under the low-speed running state, and the combustion gas mixing inequality, it is insufficient to burn.Therefore, air passage structure rationally is set optimizes its flow characteristics, improve and roll the stream ratio.
The model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of higher turbosupercharging in-cylinder direct injection petrol engine air inlet that rolls the stream ratio that forms is provided.
The alleged problem of the utility model realizes with following technical proposals:
A kind of turbosupercharging in-cylinder direct injection petrol engine air inlet, comprise air flue body and air flue aditus laryngis in the formation, its specialization is: external side of described air flue and air flue aditus laryngis intersection are provided with an arc transition face, and the radius of arc R of this arc transition face is 130-145mm.
Above-mentioned turbosupercharging in-cylinder direct injection petrol engine air inlet, described air flue body is a straight-tube shape.
Above-mentioned turbosupercharging in-cylinder direct injection petrol engine air inlet, the angle α of described air flue body axis and air flue aditus laryngis axis are 35 °-40 °.
The utility model rolls stream than problem at improving the engine air flue system, has proposed a kind of petrolic intake duct structure of turbosupercharging in-cylinder direct injection that is applicable to.Described intake duct is by rationally being provided with arc transition face and the intake duct profile between intake duct and air flue aditus laryngis, can reduce the gasoline spraying contacts with the air flue wall, improve combustion efficiency, make full use of the engine air flue negotiability, improve air inlet and roll the stream specific strength, it is more even that oil gas is mixed, and effectively improves the engine combustion state.Test shows that the utility model can reach and improve the purpose of rolling the stream specific strength, and it is more even that mixed gas is mixed, and improves engine combustion efficiency.
Description of drawings
Fig. 1 is the utility model structural representation.
Each label is among the figure: 1, air flue body; 2, air flue aditus laryngis; 3, arc transition face; 4, air flue body axis; 5, aditus laryngis axis; 6, valve stem; 7. cylinder head.
Embodiment
The utility model has carried out optimal design to the petrolic intake duct of turbosupercharging in-cylinder direct injection, referring to Fig. 1, described intake duct is arranged in the cylinder head 7, its formation comprises air flue body 1 and air flue aditus laryngis 2, the air flue body is a straight-tube shape, air flue body internal surface is a smooth surface, makes the intake stroke minimum, and reduces air-flow linear loss and local losses as far as possible.Be provided with an arc transition face 3 at air flue body and air flue aditus laryngis intersection, the radius of arc R of this arc surface is 130-145mm.What this arc transition face can guarantee to form higher-strength rolls the stream ratio, and it is more even that oil gas is mixed, and effectively improves the engine combustion state.Require and structural limitations based on engine operation, air flue body axis 4 is the valve stem axis with air flue aditus laryngis axis 5() angle α be 35 °-40 °.Test shows, adopts the utility model design, can reach and improve the purpose of rolling the stream specific strength, and it is more even that mixed gas is mixed, and improves engine combustion efficiency.
Claims (3)
1. turbosupercharging in-cylinder direct injection petrol engine air inlet, it comprises air flue body (1) and air flue aditus laryngis (2), it is characterized in that: external side of described air flue and air flue aditus laryngis intersection are provided with an arc transition face (3), and the radius of arc R of this arc transition face is 130-145mm.
2. turbosupercharging in-cylinder direct injection petrol engine air inlet according to claim 1 is characterized in that: described air flue body (1) is a straight-tube shape.
3. according to claim 1 or 2 described turbosupercharging in-cylinder direct injection petrol engine air inlets, it is characterized in that: described air flue body axis (4) is 35 °-40 ° with the angle α of air flue aditus laryngis axis (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200259287U CN201982207U (en) | 2011-01-26 | 2011-01-26 | Inlet channel of direct injection gasoline engine in turbocharging cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200259287U CN201982207U (en) | 2011-01-26 | 2011-01-26 | Inlet channel of direct injection gasoline engine in turbocharging cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982207U true CN201982207U (en) | 2011-09-21 |
Family
ID=44609670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200259287U Expired - Lifetime CN201982207U (en) | 2011-01-26 | 2011-01-26 | Inlet channel of direct injection gasoline engine in turbocharging cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696868A (en) * | 2013-12-10 | 2014-04-02 | 天津大学 | Internal combustion engine cylinder cover with high eddy ratio or high tumble ratio |
| CN113944543A (en) * | 2021-08-31 | 2022-01-18 | 东风汽车集团股份有限公司 | Gasoline engine combustion system, gasoline engine assembly and vehicle |
-
2011
- 2011-01-26 CN CN2011200259287U patent/CN201982207U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696868A (en) * | 2013-12-10 | 2014-04-02 | 天津大学 | Internal combustion engine cylinder cover with high eddy ratio or high tumble ratio |
| CN103696868B (en) * | 2013-12-10 | 2016-05-25 | 天津大学 | There is high-eddy and the engine cylinder head system that rolls stream ratio |
| CN113944543A (en) * | 2021-08-31 | 2022-01-18 | 东风汽车集团股份有限公司 | Gasoline engine combustion system, gasoline engine assembly and vehicle |
| CN113944543B (en) * | 2021-08-31 | 2023-05-30 | 东风汽车集团股份有限公司 | Gasoline engine combustion system, gasoline engine assembly and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |