CN101122268B - Inlet manifold system - Google Patents
Inlet manifold system Download PDFInfo
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- CN101122268B CN101122268B CN2006100299860A CN200610029986A CN101122268B CN 101122268 B CN101122268 B CN 101122268B CN 2006100299860 A CN2006100299860 A CN 2006100299860A CN 200610029986 A CN200610029986 A CN 200610029986A CN 101122268 B CN101122268 B CN 101122268B
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- inlet
- air inlet
- manifold system
- inlet cavity
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Abstract
The invention aims to design an air inlet manifold system, which can not only meet the requirement of air inlet by an engine under different working conditions, but also realize the concise structure and the small weight. The system divides an air inlet chamber into two single air inlet cavities on the left and right. An air inlet pipe extends out from each air inlet cavity and is connected with each side cylinder. The air inlet pipe is divided into a straight pipe and a bent pipe. In addition, a power valve is arranged on the straight pipe. A balance valve is arranged between the two left and right cavities. By opening and closing the valves, a length of an airflow path can be set, and the communication and separation between the two air inlet cavities can be set as well, so different amount of air will be supplied to the engine according to the different working conditions of the engine. Meanwhile, the air inlet and outlet state of both left and right cylinders are kept to be even and stable. The air inlet manifold system can obviously promote the power performance, economy and emission performance of the engine.
Description
Technical field
The present invention relates to a kind of automotive engine air intake system, be specifically related to the air intake manifold of automotive engine system.
Background technique
In the existing air intake manifold of automotive engine system, adopt the box gas handling system of voltage stabilizing mostly, as shown in Figure 1: left and right sides cylinder row 2 ', 3 ' intake manifold be communicated as one, whole air-inlet cavity 1 ' volume bigger.Air inlet path (shown in arrow) can not change with the variation of engine operating condition, can not take into account the high low-speed performance, particularly torsional performance of motor; Though the motor that has also adopts the variable air inlet structure, can only regulate the part operating mode, requirement or structure to the air inlet characteristic in the time of can not taking into account motor senior middle school low speed are too complicated.In addition, most of intake manifold adopt metallic stamping pieces even foundry goods, compare with working of plastics, and it is bigger to have weight, and complicated shortcoming is shaped.
Summary of the invention
The purpose of this invention is to provide a kind of not only can satisfy Under Different Work Condition of Engine the time to the demand of air inlet, simultaneously but also realized compact structure and light-weighted inlet manifold system, also have competitive ability on the cost.
For reaching above-mentioned purpose; Inlet manifold system of the present invention comprises air-inlet cavity and left and right sides cylinder row, and every side cylinder row is formed with several suction ports of equal number; Said air-inlet cavity and each suction port all are provided with pipeline connection straight; It is characterized in that: said air-inlet cavity is divided into left and right sides air-inlet cavity through isolating plate, and left air-inlet cavity is communicated with said left side cylinder row's suction port, and right air-inlet cavity is communicated with said right side cylinder row's suction port; Airflow connection about also being provided with an equilibrium valve between the air-inlet cavity of the said left and right sides and being used to open or close between two air-inlet cavitys; Also be provided with dog leg piping separately between said left and right sides air-inlet cavity and the corresponding suction port and be connected, said each also be provided with the power valve on the pipeline straight.
According to above-mentioned conception of the present invention, be preferably, said equilibrium valve be arranged on isolate said about the tail end of isolating plate of two air-inlet cavitys.
According to above-mentioned conception of the present invention, be preferably, the starting point of said pipeline straight and the starting point of said dog leg piping intersect and form the air inlet fork, and the terminal point of said pipeline straight and the terminal point of said dog leg piping intersect and formation air inlet convergent point.
According to above-mentioned conception of the present invention, be preferably, said power valve is arranged between said air inlet fork and the said air inlet convergent point.
According to above-mentioned conception of the present invention, be preferably, it is characterized in that: said every side cylinder drains into rare two suction ports.
Adopt such structure,, on each air-inlet cavity, extend the air inlet pipeline that is connected with every side cylinder row again, both avoided the air inlet between cylinder to interfere, guaranteed the compactedness of structure simultaneously again owing to two independent air-inlet cavitys about original air-inlet cavity is divided into.
Because the equilibrium valve and the power valve that in intake manifold, are provided with; Opening and closing through these valves; Can set the length and the connected sum between two air-inlet cavitys of air flow path isolates; Can be directed against motor different air quantity of supply engine under different operating modes like this, also guarantee the stable homogeneous of left and right sides cylinder row air inlet state simultaneously.This inlet manifold system can significantly improve the power character of motor, Economy and emission performance.
In addition, the piping material of intake manifold is by heat-resisting plastic injection-moulded forming, thereby has realized the light-weight design of part, has improved compactedness, has reduced cost of production.
For further specifying above-mentioned purpose of the present invention, structural feature and effect, below will combine accompanying drawing that the present invention is carried out detailed description.
Description of drawings
Fig. 1 is the structural representation of existing inlet manifold system.
Fig. 2 is the structural representation of the inlet manifold system according to the present invention
Embodiment
Be illustrated in figure 2 as the structural representation of inlet manifold system of the present invention; Be provided with the cylinder row 3,4 of the left and right sides; Be formed with suction port 8,9 separately on every side cylinder row 3,4, suction port 8,9 numbers on the both sides cylinder row 3,4 are identical, should be formed with two suction ports at least on every side cylinder row; Every side cylinder row has selected three suction ports separately in the present embodiment, and these suction ports 8,9 are connected with the cylinder of motor.
In the present invention; Air-inlet cavity 1 in the existing inlet manifold system ' separated by the isolating plate among the present invention 7; Thereby with an only air-inlet cavity 1 in original inlet manifold system ' two independent air- inlet cavitys 1,2 about being divided into; Left side air-inlet cavity 1 links to each other with left side cylinder row 3, and right air-inlet cavity 2 then links to each other with right side cylinder row 4.In addition; Tail end at the isolating plate 7 of separating 1,2 separations of left and right sides air-inlet cavity also is provided with an equilibrium valve 6, and when equilibrium valve 6 cut out, the air-flow of left and right sides air- inlet cavity 1,2 was not connected; After equilibrium valve 6 was opened, left and right sides air-inlet cavity 1, the air-flow between 2 just can be communicated with.Certainly; This equilibrium valve 6 can be arranged on the arbitrary position on the isolating plate 7 of isolating left and right sides air- inlet cavity 1,2; Such as isolating plate 7 is divided into two sections, also can equilibrium valve 6 be arranged on the neutral position of two sections isolating plates, as long as this equilibrium valve 6 can through open or close make left and right sides air- inlet cavity 1,2 airflow connection or isolate just passable; Present embodiment selects to be arranged on the tail end of isolating plate 7, is not limited thereto.
In the present invention; Left side air-inlet cavity 1 all has two pipelines with each suction port 8 of left side cylinder row 3 and is connected; I.e. pipeline 10 and dog leg piping 11 straight; Right air-inlet cavity 2 is symmetrical with the Placement and the left side of each suction port 9 of right side cylinder row 4, describes the Placement in left side in detail with regard to omitting narration at this.Pipeline 10 is that the sectional area of pipeline and pipeline of straight line is bigger straight, dog leg piping 11 as the term suggests be exactly bending and sectional area pipeline less.Intersection in the starting point of the starting point of pipeline 10 straight and dog leg piping 11 forms air inlet fork 12; The air-flow of left side air-inlet cavity 1 can be divided into the two-way walking at this air inlet fork 12; And form air inlet convergent point 13 in the intersection of the terminal point of the terminal point of pipeline 10 straight and dog leg piping 11; Can pool together again at this air inlet convergent point 13 from the air-flow of air inlet fork two-way walking in 12 fens, get into suction port 8 again.The structure that is not always the case between each suction port 8 of left side air-inlet cavity 1 and left side cylinder row 3, same, it also is the same structure that right air-inlet cavity 2 and right side cylinder are arranged between each suction port 9 of 4.
Another one characteristics of the present invention all are provided with power valve 5 on the pipeline 10 at every exactly straight, and specifically, this power valve 5 is arranged on the pipeline straight 10 between air inlet fork 12 and the air inlet convergent point 13.Like this when power valve 5 is opened; Because the pipeline sectional area of pipeline 10 is than dog leg piping 11 big and path weak points straight; Therefore most air-flows will be from 12 direct radius vector straight tube roads, 10 walkings of air inlet fork; Few part air-flow dog leg piping 11 of then flowing through gets into suction ports 8 in common air inlet convergent point 13 backs that arrive; And when power valve 5 cut out, air-flow begins to lead to straight the passage of pipeline 10 from air inlet fork 12 can close, and air-flow has only from dog leg piping 11 walkings, arrived air inlet convergent point 13 backs again and got into suction ports.
Specify inlet manifold system of the present invention below in the working principle that is used for the motor car engine process.
(1) when engine speed is low; Equilibrium valve 6 and power valve 5 state that all keeps shut; Left and right sides air- inlet cavity 1,2 works alone separately, and air- inlet cavity 1,2 entering backs all are through dog leg piping 11 walkings, because the pipeline length of dog leg piping 11 is longer at air inlet fork 12 to air-flow from the left and right sides; The air inlet path of air-flow arrival left and right side cylinder row 3,4 suction ports 8,9 is also longer like this; And air-flow air inlet cross section through dog leg piping 11 when advancing is less, shown in the thin arrow among Fig. 1, thereby helps improving the low speed torque property of motor;
(2) when engine speed keeps intermediate range, equilibrium valve 6 is opened, and power valve 5 still keeps shut, and left and right sides air- inlet cavity 1,2 is communicated with like this, and the volume of shared air cavity increases, and utilizes the harmonic shock effect, the torsional performance in the time of can improving the medium engine speed zone;
(3) when motor requires full power output; Equilibrium valve 6 is all opened with power valve 5, air-flow from the left and right sides air- inlet cavity 1,2 get into the back at air inlet fork 12 most air-flows directly to bigger 10 walkings of pipeline straight of sectional area, the few part air-flow dog leg piping 11 of then flowing through; The air inlet path contraction of so most of gas; Air flow path is shown in thick arrow among Fig. 1, and at this moment charge flow rate keeps maximum rating, has satisfied the requirement of motor to the full admission amount.
In sum; Inlet manifold system of the present invention is because two independent air-inlet cavitys about being divided into extend the air inlet pipeline that is connected with every side cylinder row again on each air-inlet cavity; Both avoided and cylinder between air inlet interfere, guaranteed the compactedness of structure simultaneously again.
Because the equilibrium valve and the power valve that in inlet manifold system, are provided with; Opening and closing through these valves; Can set the length and the connected sum between two air-inlet cavitys of air flow path isolates; Can be directed against motor different air quantity of supply engine under different operating modes like this, also guarantee the stable homogeneous of left and right sides cylinder row air inlet state simultaneously.This inlet manifold system can significantly improve the power character of motor, Economy and emission performance.
In addition, the piping material of intake manifold can be by heat-resisting plastic injection-moulded forming, thereby realized the light-weight design of part, improved compactedness, reduced cost of production.
Though the present invention describes with reference to current specific embodiment; But those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; Under the situation that does not break away from spirit of the present invention, also can make the variation or the replacement of various equivalences, therefore, as long as in connotation scope of the present invention in the scope to the variation of the foregoing description, claims that modification all will drop on the application.
Claims (5)
1. inlet manifold system; Comprise an air-inlet cavity and left and right sides cylinder row; Every side cylinder row is formed with several suction ports of equal number, and said air-inlet cavity and each suction port all are provided with pipeline connection straight, it is characterized in that: said air-inlet cavity is divided into left and right sides air-inlet cavity through isolating plate; Left side air-inlet cavity is communicated with said left side cylinder row's suction port, and right air-inlet cavity is communicated with said right side cylinder row's suction port; Airflow connection about also being provided with an equilibrium valve between the air-inlet cavity of the said left and right sides and being used to open or close between two air-inlet cavitys; Also be provided with dog leg piping separately between said left and right sides air-inlet cavity and the corresponding suction port and be connected, said each also be provided with the power valve on the pipeline straight, the starting point of said pipeline straight and the starting point of said dog leg piping intersect and form the air inlet fork.
2. inlet manifold system as claimed in claim 1 is characterized in that: said equilibrium valve be arranged on isolate said about the tail end of isolating plate of two air-inlet cavitys.
3. inlet manifold system as claimed in claim 1 is characterized in that: the terminal point of said pipeline straight and the terminal point of said dog leg piping intersect and formation air inlet convergent point.
4. inlet manifold system as claimed in claim 3 is characterized in that: said power valve is arranged between said air inlet fork and the said air inlet convergent point.
5. inlet manifold system as claimed in claim 1 is characterized in that: said every side cylinder drains into rare two suction ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100299860A CN101122268B (en) | 2006-08-11 | 2006-08-11 | Inlet manifold system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100299860A CN101122268B (en) | 2006-08-11 | 2006-08-11 | Inlet manifold system |
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| Publication Number | Publication Date |
|---|---|
| CN101122268A CN101122268A (en) | 2008-02-13 |
| CN101122268B true CN101122268B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100299860A Active CN101122268B (en) | 2006-08-11 | 2006-08-11 | Inlet manifold system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511140B (en) * | 2013-10-08 | 2015-09-09 | 潍柴动力股份有限公司 | A kind of motor and suction tude thereof |
| CN113006985A (en) * | 2019-12-19 | 2021-06-22 | 浙江吉利新能源商用车集团有限公司 | Gas engine air intake system, gas engine and car |
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| CN101122268A (en) | 2008-02-13 |
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