CN202250501U

CN202250501U - Intake manifold for automobile engine

Info

Publication number: CN202250501U
Application number: CN201120312799XU
Authority: CN
Inventors: 王亮; 黄寅桂
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2012-05-30
Anticipated expiration: 2021-08-25

Abstract

The utility model discloses an intake manifold for an automobile engine. An intake main pipe, a pressure regulation cavity and intake bent pipes are sequentially communicated; throttle valve mounting flanges are connected with the intake main pipe; cylinder cover mounting flanges are connected with the intake bent pipes; an included angle between the intake main pipe and the pressure regulation cavity is 123 DEG to 128 DEG; a transitional arc of R 90 to R 110mm is arranged at a connection part of the intake main pipe and the pressure regulation cavity; the interval between middle parts of the each two intake bent pipes is smaller than the interval between two ends of each two intake bent pipes; the length of all the intake bent pipes is 350 to 370mm, the inner diameter thereof is 46 to 48mm; the length dimension L of the intake manifold is not smaller than 1435mm, the width dimension W thereof is not smaller than 1320mm, and the height dimension H thereof is not smaller than 200mm. Under the premise of guaranteeing the smooth intaking of the intake manifold and the overall performance of the engine, the intake manifold for the automobile engine has more compact structure and lower cost.

Description

Air intake manifold of automotive engine

Technical field

The utility model relates to a kind of automobile component, specifically, is a kind of intake manifold that is used on the motor car engine.

Background technique

Air intake manifold of automotive engine is installed between engine cylinder head and the closure, generally is made up of intake manifold, pressure stabilizing cavity, intake elbow, closure mounting flange and cylinder cap mounting flange.The air-flow that gets into from the intake manifold flows into different intake elbows through pressure stabilizing cavity, and the quantity of intake elbow equates with the quantity of cylinder, the independent air inlet of the cylinder that is respectively different.Pressure stabilizing cavity and intake manifold's angle is 130～135 ° in the conventional construction; Because this angle is less, air-flow can produce the sharp turn through pressure stabilizing cavity from the intake manifold to the intake elbow process of flowing, make air-flow not smooth; Thereby influence the charging efficiency of cylinder, cause engine performance relatively poor; In addition, intake elbow is pressed comb shape usually and is distributed, each intake elbow different in size, and internal diameter equates (all about 40mm) basically, causes the air inflow of each cylinder inhomogeneous, engine luggine and noise are big.

State Intellectual Property Office discloses a kind of " air intake manifold of automotive engine " on May 12nd, 2010; Publication number is 101705890A; This intake manifold is improved traditional intake manifold, and pressure stabilizing cavity and intake manifold's angle is increased to 145～155 °, has avoided effectively producing the sharp turn in the air current flow process; Make air-flow more smooth and easy, improved the charging efficiency and the engine performance of cylinder; In addition, identical, the equal in length of the shape that defines each intake elbow, and with length adjustment to the 390～410mm of each intake manifold; Internal diameter is adjusted to 34～37mm; With the charging efficiency of further raising cylinder, improve the performance of motor, reduced the vibration and the noise of motor.But in use find, though this intake manifold overall performance has obtained raising significantly, because its boundary dimension is big, overall structure is still compact inadequately, thus usually receive the restriction of installing space in the car, and cost is still higher.

The model utility content

The purpose of the utility model is to guarantee that the intake manifold air inlet is smooth and easy, under the prerequisite of motor overall performance, the air intake manifold of automotive engine that a kind of structure is more compact, cost is lower is being provided.

For solving above technical problem; A kind of air intake manifold of automotive engine that the utility model provides comprises intake manifold (1), pressure stabilizing cavity (2), the many intake elbows (3) that are arranged side by side, closure mounting flange (4), cylinder cap mounting flange (5), and said intake manifold (1), pressure stabilizing cavity (2) and intake elbow (3) communicate successively; Said closure mounting flange (4) links to each other with intake manifold (1); Said cylinder cap mounting flange (5) links to each other with intake elbow (3), and key is: be 123～128 ° angle between said intake manifold (1) and the pressure stabilizing cavity (2), be provided with the transition arc of R90～R110mm at the intake manifold (1) and the link position place of pressure stabilizing cavity (2); Each intake elbow (3) is in the spacing at the medium position place spacing less than two ends; The length of each intake elbow (3) is 350～370mm, and internal diameter is 46～48mm, the length dimension L≤1435mm of this intake manifold; Width dimensions W≤1320mm, height dimension H≤200mm.

The utility model is from the boundary dimension of four aspect control intake manifold; Make that overall structure is more compact, cost is lower: the angle that (a) changes intake manifold and pressure stabilizing cavity; The intake manifold is drawn close towards intake elbow; (b) change the structural type that each intake elbow becomes comb shape to distribute in the conventional construction, adopt and dwindle the spacing of each intake elbow, make each intake elbow be that two ends are wide, the distribution form of intermediate narrower in midway; (c) control the length of each intake elbow, (d) the length degree size of control intake manifold; Guarantee the charging efficiency of cylinder and the overall performance of motor from two aspects: the transition arc that (a) is provided with R90～R110mm at the link position of intake manifold and pressure stabilizing cavity; The interference in air flow that reduces to cause with the angle of eliminating intake manifold and pressure stabilizing cavity, (b) internal diameter of each intake elbow being increased to is 46～48mm.

Said intake manifold (1), pressure stabilizing cavity (2) are in the long-pending maximum of the intracavity section at both link position places; And intake manifold's (1) intracavity section is long-pending to be reduced towards the direction away from pressure stabilizing cavity (2) gradually; The intracavity section of pressure stabilizing cavity (2) is long-pending to be reduced towards the direction away from intake manifold (1) gradually; Further guarantee the airflow smooth at intake manifold and pressure stabilizing cavity link position place, thereby improve the charging efficiency of cylinder, improve the performance of motor.

As preferably; Angle between said intake manifold (1) and the pressure stabilizing cavity (2) is 128 °; Intake manifold (1) is R100mm with the transition arc of the link position place setting of pressure stabilizing cavity (2); The length of each intake elbow (3) is 360mm, and internal diameter is 47mm, and L * W in this intake manifold * H is 1433 * 1316 * 197mm.

The beneficial effect of the utility model: compact overall structure, cost are low, the charging efficiency of cylinder is high, engine power performance is good.

Description of drawings

Fig. 1 is the plan view of the utility model.

Fig. 2 is the right elevation of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Like Fig. 1, a kind of air intake manifold of automotive engine shown in 2, constitute by intake manifold 1, pressure stabilizing cavity 2, the many intake elbows 3 that are arranged side by side, closure mounting flange 4, cylinder cap mounting flange 5, each parts is processed by engineering plastics.Intake manifold 1, pressure stabilizing cavity 2 and intake elbow 3 communicate successively, pressure stabilizing cavity 2 straight settings, and intake manifold 1 tiltedly upwarps.Closure mounting flange 4 links to each other with intake manifold 1, and the other end links to each other with closure, and cylinder cap mounting flange 5 links to each other with intake elbow 3; The other end links to each other with cylinder; Air-flow gets into through closure, passes through intake manifold 1, pressure stabilizing cavity 2, intake elbow 3 successively, is cylinder charge; The quantity of curved 3 pipes 3 of air inlet is identical with the quantity of cylinder, and the above is identical with conventional construction.

Difference is: the angle between intake manifold 1 and the pressure stabilizing cavity 2 is 128 °; The link position place of intake manifold 1 and pressure stabilizing cavity 2 is provided with the transition arc of R100mm; Each intake elbow 3 is in the spacing at the medium position place spacing less than two ends, makes each intake elbow 3 integral body be that two ends are wide, the structural type of intermediate narrower.The length of each intake elbow 3 is 360mm, and the concrete shape of intake elbow 3 can be regulated according to specific vehicle; The internal diameter of each intake elbow 3 is identical, is 47mm, and L * W in the intake manifold * H is 1433 * 1316 * 197mm.Intake manifold 1, pressure stabilizing cavity 2 are in the long-pending maximum of the intracavity section at both link position places; And intake manifold 1 intracavity section is long-pending to be reduced towards the direction away from pressure stabilizing cavity 2 gradually; The intracavity section of pressure stabilizing cavity 2 is long-pending to be reduced towards the direction away from intake manifold 1 gradually, further guarantees the airflow smooth of angle position.

The air intake manifold of automotive engine of said structure (being called for short " short manifold ") sees the following form with the torsional performance contrast of State Intellectual Property Office's disclosed " air intake manifold of automotive engine " (publication number 101705890A is called for short " long manifold "):

From above torsional performance contrast table, can find out; The moment of torsion of rotating speed below 3000RPM of the motor of outfit the utility model is all greater than long manifold; Rotating speed is low slightly at the long manifold of torque ratio of 3500～5500RPM scope, at the moment of torsion of 5500～6000RPM scope also greater than long manifold.The engine speed of automobile driving cycles commonly used is about 2000RPM; Engine torque in this speed range is the determinant factor that influences vehicle dynamic quality, and therefore, the engine intake manifold gas flow of the utility model is smooth and easy; Under the rotating speed of 1000～6000RPM, all can guarantee the charging efficiency of cylinder; For motor provides enough moments of torsion, the Engine torque under driving cycles commonly used even greater than long manifold significantly promotes the overall performance of motor.

The above is the preferred of the utility model, is not limited to said structure form and concrete size, in fact; Through experimental verification, be 123～128 ° angle between intake manifold 1 and the pressure stabilizing cavity 2, the transition arc of R90～R110mm is set at the intake manifold 1 and the link position place of pressure stabilizing cavity 2; The length of each intake elbow 3 is 350～370mm; Internal diameter is 46～48mm, the length dimension L≤1435mm of intake manifold, width dimensions W≤1320mm; Height dimension H≤200mm all can meet design requirement.

Claims

1. air intake manifold of automotive engine; Comprise intake manifold (1), pressure stabilizing cavity (2), the many intake elbows (3) that are arranged side by side, closure mounting flange (4), cylinder cap mounting flange (5); Said intake manifold (1), pressure stabilizing cavity (2) and intake elbow (3) communicate successively, and said closure mounting flange (4) links to each other with intake manifold (1), and said cylinder cap mounting flange (5) links to each other with intake elbow (3); It is characterized in that: be 123～128 ° angle between said intake manifold (1) and the pressure stabilizing cavity (2); Be provided with the transition arc of R90～R110mm at the link position place of intake manifold (1) and pressure stabilizing cavity (2), each intake elbow (3) is in the spacing at the medium position place spacing less than two ends, and the length of each intake elbow (3) is 350～370mm; Internal diameter is 46～48mm; Length dimension L≤the 1435mm of this intake manifold, width dimensions W≤1320mm, height dimension H≤200mm.

2. according to the described air intake manifold of automotive engine of claim 1; It is characterized in that: said intake manifold (1), pressure stabilizing cavity (2) are in the long-pending maximum of the intracavity section at both link position places; And intake manifold's (1) intracavity section is long-pending to be reduced towards the direction away from pressure stabilizing cavity (2) gradually, and the intracavity section of pressure stabilizing cavity (2) is long-pending to be reduced towards the direction away from intake manifold (1) gradually.

3. according to the described air intake manifold of automotive engine of claim 1; It is characterized in that: the angle between said intake manifold (1) and the pressure stabilizing cavity (2) is 128 °; Intake manifold (1) is R100mm with the transition arc of the link position place setting of pressure stabilizing cavity (2); The length of each intake elbow (3) is 360mm, and internal diameter is 47mm, and L * W in this intake manifold * H is 1433 * 1316 * 197mm.