CN210660376U - Engine air inlet connecting pipe and engine - Google Patents

Abstract

The utility model discloses an engine intake is taken over for many valve engine, the inlet end that the engine intake was taken over is used for connecting the inlet manifold and gives vent to anger the end and is used for connecting the engine cylinder lid, take over the body and run through the takeover air flue that admits air and take over body both ends including admitting air, admit air and take over the body still including the air flue bifurcation portion that is used for separating the takeover air flue, air flue bifurcation portion is taken over body inner wall by admitting air and is extended to the air flue export of takeover air flue and arrange, air flue bifurcation portion separates the air flue export into the branch air flue export that at least two and engine cylinder lid's valve air. This scheme will admit air the takeover air flue of takeover and separate into two at least minute air flues to being connected with the valve air flue one-to-one on the engine cylinder lid of dividing the air flue export, can controlling the air input that gets into a plurality of valve air flues respectively according to the demand of homogeneity and burning, thereby the oil-gas mixture of participation burning in making the combustion chamber is more even. The application also discloses an engine.

Description

Engine air inlet connecting pipe and engine

Technical Field

The utility model relates to the technical field of engines, especially, relate to an engine intake is taken over and engine.

Background

As shown in fig. 1 and 2, in the prior art, an intake connecting pipe 03 connecting an engine intake manifold 01 and an engine cylinder head intake passage 02 is a total air passage, so that for an engine with two or more intake valves, the amount of intake air entering each intake valve is uncontrollable, and therefore, insufficient air-fuel mixing in a combustion chamber is caused, which is not beneficial to combustion.

Therefore, how to mix the oil and gas in the combustion chamber more fully and facilitate the combustion is a technical problem which needs to be solved by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an engine intake is taken over, should intake and take over can control the proportion that gets into the air input of two (air) intake valves of cylinder cap respectively to make the oil-gas mixture in the combustion chamber more even. Another object of the utility model is to provide an engine of including above-mentioned engine air inlet connection.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an engine intake is taken over for many valve engine, the inlet end of engine intake takeover is used for connecting air intake manifold and the end of giving vent to anger is used for connecting the engine cylinder lid, take over the body and run through including admitting air the takeover air flue at air intake takeover body both ends, the air intake takeover body is still including being used for separating the air flue bifurcation portion of takeover air flue, air flue bifurcation portion by admit air takeover body inner wall to the air flue export of takeover air flue extends to arrange, air flue bifurcation portion will air flue export is separated into two at least branch air flue exports, divide the air flue export with the valve air flue one-to-one of engine cylinder lid is connected.

Preferably, the air passage branching portion divides the air passage outlet into a first branch air passage outlet and a second branch air passage outlet, and the flow area ratio of the first branch air passage outlet to the second branch air passage outlet is 1.2: 1.

Preferably, the air flue bifurcation includes an inner wall convex part and an outlet connecting part, the inner wall convex part protrudes from the two sides of the inner wall of the air inlet connecting pipe body, the outlet connecting part is located at the air flue outlet, and the inner wall convex part gradually extends along the air inlet direction and is connected with the outlet connecting part into a whole.

Preferably, the height of the inner wall protrusion relative to the inner wall of the air inlet connecting pipe body is gradually increased along the air inlet direction.

Preferably, the surface of the joint of the inner wall convex part and the inner wall of the air inlet connecting pipe body is a transition curved surface.

The utility model provides an engine intake pipe for many valve engine, the inlet end of engine intake pipe is used for connecting the inlet manifold and gives vent to anger the end and be used for connecting the engine cylinder lid, take over the body and run through the takeover air flue that admits air and take over body both ends including admitting air, admit air and take over the body still including the air flue bifurcation portion that is used for separating the takeover air flue, air flue bifurcation portion is extended to the air flue export of takeover air flue by admitting air and is arranged, and air flue bifurcation portion separates the air flue export into two at least branch air flue exports, divides the air flue export to be connected with the valve air flue one-to-one of. This scheme will admit air the takeover air flue of takeover and separate into two at least minute air flues to being connected with the valve air flue one-to-one on the engine cylinder lid in the branch air flue export, the air flue is taken over in the design just so can be according to the demand of homogeneity and burning, the air input that gets into a plurality of valve air flues is controlled respectively, thereby the oil-gas mixture of participation burning in making the combustion chamber is more even, makes the burning more abundant, and then fuel economy.

The utility model also provides an engine of including above-mentioned engine intake connection. The derivation process of the beneficial effect of the engine is substantially similar to the derivation process of the beneficial effect brought by the engine air inlet connecting pipe, and therefore, the description is omitted here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of an arrangement structure of an air inlet connection pipe in the prior art;

FIG. 2 is a schematic view of a prior art intake adapter;

fig. 3 is a schematic perspective view of an engine intake adapter in an embodiment of the present invention;

fig. 4 is a schematic view of an air passage inlet of the connecting pipe air passage in the embodiment of the present invention;

fig. 5 is a schematic view of an air passage outlet of the connecting pipe air passage in the embodiment of the present invention;

fig. 6 is a schematic view of a connecting pipe air passage in an embodiment of the present invention;

fig. 7 is a schematic view of the connection between the engine intake adapter and the valve air passage in the embodiment of the present invention;

fig. 8 is a partial cross-sectional view of the connection of the engine intake adapter to the valve air passage in an embodiment of the present invention;

fig. 9 is a schematic view of a connection structure between an engine intake pipe and an engine cylinder head and an intake valve according to an embodiment of the present invention.

In fig. 1 to 9:

01-an air inlet main pipe, 02-an air inlet channel of an engine cylinder cover and 03-an air inlet connecting pipe;

1-an air inlet connecting pipe body, 2-an air passage inlet, 3-an air passage outlet, 4-an air passage branching part, 31-a first air passage dividing outlet, 32-a second air passage dividing outlet, 41-an inner wall convex part, 42-an outlet connecting part, 43-an air passage branching point, 51-a first air valve passage, 52-a second air valve passage, 61-a first air inlet valve, 62-a second air inlet valve and 7-an engine cylinder cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 3 to 9, fig. 3 is a schematic perspective view of an engine intake adapter according to an embodiment of the present invention; fig. 4 and 5 are schematic diagrams of an air passage inlet and an air passage outlet of a connecting pipe air passage in an embodiment of the present invention; fig. 6 is a schematic view of a connecting pipe air passage in an embodiment of the present invention; fig. 7 and 8 are an overall schematic view and a partial sectional view of the connection between the engine intake adapter and the valve air passage in the embodiment of the present invention, respectively; fig. 9 is a schematic view of a connection structure between an engine intake pipe and an engine cylinder head and an intake valve according to an embodiment of the present invention.

The utility model provides an engine intake is taken over for many valve engine, the inlet end that the engine intake was taken over is used for connecting the inlet manifold and gives vent to anger the end and is used for connecting engine cylinder lid 7, take over body 1 and run through the takeover air flue that admits air and take over 1 both ends including admitting air, admit air and take over body 1 still including being used for separating the air flue bifurcation portion 4 of taking over the air flue, air flue bifurcation portion 4 is taken over 1 inner wall by admitting air and is extended to the air flue export 3 of taking over the air flue and arrange, and air flue bifurcation portion 4 separates air flue export 3 into two at least branch air flue exports, divides the air flue export to be connected with the valve air flue one-.

This scheme will admit air the takeover air flue of takeover and separate into two at least branch air flues by a traditional total air flue structure to being connected branch air flue export and the valve air flue one-to-one on the engine cylinder lid 7, the air flue is taken over in the design just so can be according to the demand of in-cylinder mixture homogeneity and burning, the air input that gets into a plurality of valve air flues is controlled respectively, thereby the oil-gas mixture that participates in the burning in making the combustion chamber is more even, makes the burning more abundant, and then saves the oil consumption.

It should be noted that the utility model provides an engine intake is taken over can be applicable to many valve engine such as four valve engine, five valve engine, to four valve engine (two intake valves, two exhaust valves) in this concrete embodiment scheme, has designed into two branch air flues with the takeover air flue that the engine intake was taken over. Preferably, the air passage branching portion 4 divides the air passage outlet 3 into a first air passage branching outlet 31 and a second air passage branching outlet 32, and the flow area ratio of the first air passage branching outlet 31 to the second air passage branching outlet 32 is 1.2: 1. Specifically, a connecting pipe air passage inside the air inlet connecting pipe body 1 is divided into two branch air passages by an air passage branching part 4, the two branch air passages share one air passage inlet 2, and the two branch air passages respectively control the distribution proportion of air inlet amount entering two valve air passages (namely a first valve air passage 51 and a second valve air passage 52) of an engine cylinder cover 7. According to the scheme, the air inflow preferably enters the first valve air passage 51 and the second valve air passage 52 respectively according to the distribution proportion of 1.2:1, then enters the two intake valves (namely the first intake valve 61 and the second intake valve 62) to participate in the combustion of the engine, and according to the distribution proportion, the oil-gas mixing effect in a common working condition area within the range of 60% -80% of the rotating speed can be optimal, so that the oil consumption in the common working condition area of the whole engine is optimal.

It should be noted that the air passage branching portion 4 in this embodiment is used to separate the connection air passage, so that the air passage outlet 3 of the connection air passage is divided into at least two branch air passage outlets, and it is also ensured that a plurality of branch air passages share one air passage inlet, that is, the air passage inlet 2 of the connection air passage, wherein the air passage branching portion 4 may be designed as a partition plate structure, a partition block structure, or as a structure integrated with the air intake connection pipe body 1, and the like, preferably, the air passage branching portion 4 includes an inner wall protrusion 41 and an outlet connection portion 42, the inner wall protrusion 41 protrudes from both sides of the inner wall of the air intake connection pipe body 1, the outlet connection portion 42 is located at the air passage outlet 3, and the inner wall protrusion 41 gradually extends along the air intake direction and is connected with the outlet connection portion 3 as a whole. Referring to fig. 6 and 8, the air passage branching point 43 is located inside the connecting air passage, and from the position of the air passage branching point 43, the inner wall convex part 41 branches the connecting air passage into two branch air passages. Specifically, this air flue bifurcation portion 4 designs promptly and takes over body 1 integral type structure with admitting air, promptly, when processing the body 1 of taking over that admits air, at the inboard processing air flue bifurcation portion 4 that takes over the air flue, so can make processing step reduce, guarantees that air flue bifurcation portion 4 and the inside relative position of taking over the air flue remain unchanged.

The convex shape of the inner wall convex portion 41 may be selected from various shapes, such as a circular arc convex, a rectangular convex, and the like, and in order to reduce the intake resistance, the convex height of the inner wall convex portion 41 relative to the inner wall of the intake pipe body 1 is preferably gradually increased along the intake direction. After the intake air flow enters the connecting pipe air passage from the air passage inlet 2, the intake air flow is gradually divided into a first branch air passage and a second branch air passage along with the inner wall convex part 41, and therefore, the intake air flow finally flows out from the first branch air passage outlet 31 and the second branch air passage outlet 32.

Preferably, the surface of the junction between the inner wall convex part 41 and the inner wall of the air inlet connecting pipe body 1 is a transition curved surface. The transition curved surface can reduce airflow resistance and guide the intake airflow to smoothly enter the air passage of the air valve.

The utility model discloses following beneficial effect has:

1) the outlets of the at least two air distribution passages respectively control the proportion of the air inflow of each air inlet valve entering the cylinder cover, so that the air inflow of a plurality of air inlet valves entering the cylinder cover reaches the optimal distribution proportion;

2) the shape and the sectional area of the outlets of the plurality of branch air passages of the connecting pipe air passage are not required to be completely the same, the air inflow of each air valve air passage can be determined according to the combustion requirement in the cylinder, and then the shape and the sectional area of the outlets of the two branch air passages of the air inlet connecting pipe are determined, so that the design of the connecting pipe air passage is more scientific and reasonable.

The utility model also provides an engine of including above-mentioned engine intake connection. The derivation process of the beneficial effect of the engine is substantially similar to the derivation process of the beneficial effect brought by the engine air inlet connecting pipe, and therefore, the description is omitted here. Specifically, the engine is a multi-valve engine, such as a four-valve engine or a five-valve engine.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides an engine intake connection pipe for many valve engine, the inlet end of engine intake connection pipe is used for connecting air intake manifold and the end of giving vent to anger is used for connecting engine cylinder lid (7), its characterized in that, including intake connection pipe body (1) and run through the takeover air flue at intake connection pipe body (1) both ends, intake connection pipe body (1) still including being used for separating air flue bifurcation portion (4) of takeover air flue, air flue bifurcation portion (4) by intake connection pipe body (1) inner wall to air flue export (3) extension of takeover air flue are arranged, air flue bifurcation portion (4) will air flue export (3) are separated into two at least branch air flue exports, divide air flue export with the valve air flue one-to-one of engine cylinder lid (7) is connected.

2. The engine intake connection according to claim 1, characterized in that the air passage branching portion (4) divides the air passage outlet (3) into a first branch air passage outlet (31) and a second branch air passage outlet (32), and a flow area ratio of the first branch air passage outlet (31) to the second branch air passage outlet (32) is 1.2: 1.

3. The engine intake adapter according to claim 1, characterized in that the air passage branching portion (4) includes an inner wall protrusion portion (41) and an outlet connection portion (42), the inner wall protrusion portion (41) protrudes from both sides of the inner wall of the intake adapter body (1), the outlet connection portion (42) is located at the air passage outlet (3), and the inner wall protrusion portion (41) gradually extends in the intake direction and is integrally connected to the outlet connection portion (42).

4. The engine intake adapter according to claim 3, characterized in that the height of the protrusion of the inner wall protrusion (41) with respect to the inner wall of the intake adapter body (1) becomes gradually larger in the intake direction.

5. The engine intake nozzle according to claim 4, characterized in that the surface of the junction of the inner wall boss (41) and the inner wall of the intake nozzle body (1) is a transition curved surface.

6. An engine, characterized by comprising an engine intake nipple as claimed in any one of claims 1 to 5.

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