CN201078293Y

CN201078293Y - Plastic intake manifold of car engine

Info

Publication number: CN201078293Y
Application number: CNU2007200997025U
Authority: CN
Inventors: 刘德新
Original assignee: Individual
Current assignee: TIANJIN HUIDE AIR-INTAKE SYSTEM Co Ltd
Priority date: 2007-09-28
Filing date: 2007-09-28
Publication date: 2008-06-25
Anticipated expiration: 2017-09-28

Abstract

The utility model relates to an automotive engine plastic inlet manifold, which comprises a voltage stabilizing chamber, four air inlet bend pipes and a soleplate; wherein, an internal pore diameter of an air orifice of the voltage stabilizing chamber is Theta 50 minus and plus 3mm; the internal pores of the four air outlet holes on the soleplate are a composite hole taking a center point of the air outlet hole as a origin of coordinates and minus and plus 4mm on a horizontal shaft coordinate as the centre of a circle, formed by two symmetrical circular arcs with the semidiameter of 16.5 minus and plus 1mm and a minus and plus 16mm horizontal line on a vertical shaft coordinate; The axle center distance of the adjacent air outlet holes of the four air outlet holes on the soleplate is 87.5 minus and plus 3mm. The utility model has the advantages of simple structure, scientific and reasonable design, light weight, high intensity, large air flow, high air intake efficiency and good heat insulation effect and is an automotive engine plastic inlet manifold which can promote the engine performance and the fuel utilization rate of in large range.

Description

The motor car engine plastic air intake manifold

Technical field

The utility model belongs to the motor car engine field, particularly a kind of motor car engine plastic air intake manifold.

Background technique

Intake manifold is the main body part of automotive engine air intake system, and it is between closure and engine intake valve.Being referred to as intake manifold is that through the intake manifold shunting, the quantity of corresponding cylinder imports air respectively in each cylinder after entering closure because of air.At present domestic automobile inlet manifold is many to be made with the aluminum alloy material casting, for example: Lifan motor car engine (model: the intake manifold of Shi Yonging Lifan 479Q), its structure mainly is made up of pressure stabilizing cavity, a plurality of intake elbow and fitting seat, this intake manifold compact structure, intensity are higher, but have following defective: 1. the intake manifold outer wall is coarse, needs secondary operations; 2. intake manifold inner wall coarse, the inlet stream dynamic resistance is big; 3. form sand holes, bubble during cast molding easily; 4. cost of raw material height, finished weight is heavy.

Find a utility model patent (denomination of invention: vehicle gasoline engine plastic air intake manifold by retrieval; China Patent No. is: ZL200520026976.2), this utility model patent product plastic air intake manifold is a single injection-molded, and its integral body is by anter, rear panel two-part constitute, its cost of raw material has obviously obtained reduction, and finished weight also significantly alleviates, and need not secondary operations, (model: employed intake manifold Lifan 479Q) and between the closure, the Cross section Design of its inlet end (being connected with closure) and outlet side (being connected with the car engine air admittance door) can't satisfy the fuel-economizing of Lifan motor car engine and the requirement of increase gas flow but for connecting the Lifan motor car engine.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, design science is reasonable, in light weight, intensity is high, gas flow is big, the intake efficiency height, good heat-insulation effect can increase substantially the motor car engine plastic air intake manifold of Lifan engine performance and fuel availability.

The utility model solves its technical problem and is achieved through the following technical solutions:

A kind of motor car engine plastic air intake manifold, constitute by pressure stabilizing cavity, four intake elbows and fitting seat, the lower end of intake elbow is communicated with pressure stabilizing cavity, its upper end is communicated with fitting seat, be shaped on inlet hole on the pressure stabilizing cavity, be shaped on the fitting seat respectively and four corresponding four air outlet holes of intake elbow, it is characterized in that:

(1). the internal orifice dimension of the inlet hole of pressure stabilizing cavity is Φ 50 ± 3mm;

(2). to be with the air outlet hole central point be true origin to the endoporus of four made air outlet holes on the fitting seat, with on the horizontal axis coordinate ± 4mm be the center of circle, with 16.5 ± 1mm be the radius mirror on two circular arcs of symmetry and pivotal axis coordinate ± the formed combined hole of horizontal line of 16mm;

(3). the distance of shaft centers on the fitting seat between the adjacent air outlet hole of made four air outlet holes is from being 87.5 ± 3mm.

And described pressure stabilizing cavity is provided with stiffening rib, and this stiffening rib is made up of horizontal stiffening rib and waling.

And four jiaos of the inlet holes of described pressure stabilizing cavity are uniform to be shaped on the mounting hole that diameter is Φ 9.9 ± 1mm, and the distance in the center of circle of these four mounting holes and the air outlet hole center of circle is d=42 ± 3mm, and the distance of shaft centers of adjacent mounting hole is from being H1=60 ± 3mm.

And four made mounting holes of the inlet hole of described pressure stabilizing cavity all are shaped on draw-in groove in side, inlet hole underpart.

And each air outlet hole periphery of made four air outlet holes all is shaped on attachment hole on the described fitting seat, and the attachment hole between two adjacent air outlet holes can be shared mutually.

Advantage of the present utility model and beneficial effect are:

1. this motor car engine plastic air intake manifold adopts vibration, gas dynamics principle at the inlet hole of Lifan motor car engine and the air outlet hole of closure, and in conjunction with computer-aided design (CAD), realize the purpose that gas flow is big, intake efficiency is high, and can improve the performance of fuel availability and motor preferably.

2. this motor car engine plastic air intake manifold adopts the engineering plastics single injection-molded, need not secondary operations, product precision height, and no sand holes and bubble, own wt is lighter, and good heat-insulation effect has higher mechanical strength.

3. this motor car engine plastic air intake manifold is fixed with stiffening rib on pressure stabilizing cavity, has increased the structural strength of intake manifold, and can effectively prevent distortion; And the design considerations vibration of this stiffening rib principle, have the function that alleviates vibration, reduces noise.

4. the mounting hole on this motor car engine plastic air intake manifold inlet hole is provided with draw-in groove, and adopt the mode of colding pressing that square toes steel nut is fit in the flange, the secondary operations polishing of having avoided flash to cause has reduced manufacturing process, reduce manufacture cost, improved manufacturing efficiency.

5. the utility model is simple in structure, and design science is reasonable, and cost is low, and is in light weight, the intensity height, and gas flow is big, the intake efficiency height, good heat-insulation effect can increase substantially engine performance and fuel availability, and has the function that alleviates vibration, reduces noise.

Description of drawings

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the rear view of Fig. 1;

Fig. 3 is the inlet hole attachment face front view of Fig. 1;

Fig. 4 is that the A-A of Fig. 3 is to the cross section cross-sectional schematic;

Fig. 5 is the fitting seat air outlet hole front view (part) of Fig. 1.

Embodiment

The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.

A kind of motor car engine plastic air intake manifold, by pressure stabilizing cavity 10, four intake elbows 4 and fitting seat 3 constitute, the lower end of intake elbow is communicated with pressure stabilizing cavity, its upper end is communicated with fitting seat, this pressure stabilizing cavity is provided with stiffening rib 9, this stiffening rib is distributed in the front and the back of pressure stabilizing cavity outer wall, and form by horizontal stiffening rib and waling, be shaped on inlet hole on the pressure stabilizing cavity, four jiaos of this inlet holes are uniform to be shaped on the mounting hole that diameter is Φ 9.9 ± 1mm, the distance in the center of circle of these four mounting holes and the air outlet hole center of circle is d=42 ± 3mm, the distance of shaft centers of adjacent mounting hole is from being H1=60 ± 3mm, all be shaped on draw-in groove in side, inlet hole underpart, adopt the mode of colding pressing that square toes steel nut is installed at this draw-in groove place and be used for the fixing of closure and inlet hole, be shaped on the fitting seat respectively and four corresponding four air outlet holes of intake elbow, each air outlet hole periphery of these four air outlet holes all is shaped on attachment hole, and the attachment hole between two adjacent air outlet holes can be shared mutually.Innovative point of the present utility model is:

(2). to be with the air outlet hole central point be true origin to the endoporus of four made air outlet holes on the fitting seat, on the horizontal axis coordinate ± 4mm be the center of circle, with 16.5 ± 1mm be the radius mirror on two circular arcs of symmetry and pivotal axis coordinate ± the formed combined hole of horizontal line of 16mm;

H2=8mm in the present embodiment accompanying drawing 4 is the distance of center circle at horizontal axis two circular arcs to symmetry on show, H3=32mm is on the pivotal axis coordinate ± and distance between two horizontal lines of 16mm.

Claims

1. motor car engine plastic air intake manifold, constitute by pressure stabilizing cavity, four intake elbows and fitting seat, the lower end of intake elbow is communicated with pressure stabilizing cavity, its upper end is communicated with fitting seat, be shaped on inlet hole on the pressure stabilizing cavity, be shaped on the fitting seat respectively and four corresponding four air outlet holes of intake elbow, it is characterized in that:

2. motor car engine plastic air intake manifold according to claim 1 is characterized in that: described pressure stabilizing cavity is provided with stiffening rib, and this stiffening rib is made up of horizontal stiffening rib and waling.

3. motor car engine plastic air intake manifold according to claim 1, it is characterized in that: four jiaos of the inlet holes of described pressure stabilizing cavity are uniform to be shaped on the mounting hole that diameter is Φ 9.9 ± 1mm, the distance in the center of circle of these four mounting holes and the air outlet hole center of circle is d=42 ± 3mm, and the distance of shaft centers of adjacent mounting hole is from being H1=60 ± 3mm.

4. according to claim 1 or 3 described motor car engine plastic air intake manifolds, it is characterized in that: four made mounting holes of the inlet hole of described pressure stabilizing cavity all are shaped on mounting groove in side, inlet hole underpart.

5. motor car engine plastic air intake manifold according to claim 1 is characterized in that: each air outlet hole periphery of made four air outlet holes all is shaped on attachment hole on the described fitting seat, and the attachment hole between two adjacent air outlet holes can be shared mutually.