CN203214196U

CN203214196U - EGR system intake manifold

Info

Publication number: CN203214196U
Application number: CN2013200484566U
Authority: CN
Inventors: 田明
Original assignee: Inner Mongol Ou Yide Engine Ltd
Current assignee: Inner Mongol Ou Yide Engine Ltd
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2013-09-25
Anticipated expiration: 2023-01-29

Abstract

The utility model provides an EGR system intake manifold. The EGR system intake manifold comprises an intake manifold body and an air filling pipe, wherein the intake manifold body is provided with an air filling hole, one end of the air filling pipe stretches into the intake manifold body through the air filling hole, and the other end of the air filling pipe is located outside the intake manifold body; an installation flange is formed on the side face of a part, located outside the intake manifold body, of the air filling pipe, an installation boss is formed on the outer surface of the intake manifold body and around the air filling hole, and the installation flange is fixedly connected with the installation boss to enable the air filling pipe and the intake manifold body to be fixed into a whole. According to the EGR system intake manifold, no air channel needs to be installed in the intake manifold body, and in a casting process of the EGR system intake manifold, only one through hole needs to be formed in the intake manifold body. Therefore, manufacturing difficulty of the EGR system intake manifold is greatly reduced, manufacturability of the EGR system intake manifold is improved, and cost of the EGR system intake manifold is also reduced.

Description

The egr system intake manifold

Technical field

The utility model relates to Manufacturing Technology for Automotive Parts, relates in particular to a kind of egr system intake manifold.

Background technique

Waste gas recirculation (Exhaust Gas Recirculation, EGR) technology is that engine for automobile will be discharged gas after burning a part is isolated and imported the air inlet side and makes its technology of burning once again, can effectively reduce the nitrogen oxide (NOx) of discharging in the gas.

Adopt the intake manifold of the motor of EGR technology to need to be communicated with the EGR gas-injecting pipe, in the prior art, intake manifold inside is formed with air flue, enter in the intake manifold, flow to the place, fresh air intake of intake manifold along this air flue for waste gas, thereby flow to engine cylinder-body after making waste gas and live gas form mixed gas.Because intake manifold generally adopts casting technique one-body molded, make need be in the casting intake manifold within it portion be formed for passage, to use as the EGR gas-injecting pipe, therefore, the casting machine shaping difficulty of this intake manifold is bigger in the prior art, and cost is higher.

The model utility content

At above-mentioned defective of the prior art, the utility model provides a kind of egr system intake manifold, to improve the intake manifold technology capability, cuts down finished cost.

First aspect of the present utility model provides a kind of egr system intake manifold, comprising: intake manifold matrix and gas-injecting pipe; Offer injecting hole on the described intake manifold matrix, an end of described gas-injecting pipe via described injecting hole extend in the described intake manifold matrix, the other end is in outside the described intake manifold matrix; The side that described gas-injecting pipe is positioned at described intake manifold matrix outside is formed with mounting flange, be formed with installation base at the outer surface of described intake manifold matrix and around described injecting hole, and by fixedlying connected between described mounting flange and the described installation base described gas-injecting pipe and described intake manifold matrix be fixed into one.

Aforesaid egr system intake manifold, preferably, described intake manifold matrix one end is the outlet that is used for the mixed gas input engine cylinder-body of fresh air and waste gas for entrance, the other end that enters for fresh air; Described injecting hole is arranged on the position of close described entrance on the described intake manifold matrix.

Aforesaid egr system intake manifold, preferably, described gas-injecting pipe is a bend pipe, and described bend pipe is positioned at an end of described intake manifold matrix towards described entrance bending.

Aforesaid egr system intake manifold, preferably, described gas-injecting pipe is positioned at the outer end of described intake manifold matrix and is set with the ring-type joint, is arranged with the clip that is connected with other pipeline for described gas-injecting pipe on the described joint.

Aforesaid egr system intake manifold, preferably, the described joint outside and between described joint and described clip, be provided with gasket seal.

Aforesaid egr system intake manifold preferably, also comprises at least two bolts, and the mounting flange on the described gas-injecting pipe is spirally connected by described bolt and is fixed on the described installation base.

Aforesaid egr system intake manifold, preferably, the end that described gas-injecting pipe is positioned at described intake manifold matrix is fixedly connected with the lid of giving vent to anger, described give vent to anger to cover offer the air outlet hole that at least one passes through for waste gas.

The EGR intake manifold that the utility model provides, gas-injecting pipe by independent setting, need not in the intake manifold matrix, air flue to be set again, make in the intake manifold casting process, only need to form a through hole at the intake manifold matrix, thereby, greatly reduce the manufacture difficulty of intake manifold, improve the manufacturability of EGR intake manifold, also reduced the cost of EGR intake manifold.

Description of drawings

Fig. 1 is the utility model egr system intake manifold embodiment's explosive view;

Fig. 2 is the plan view of gas-injecting pipe among Fig. 1;

Fig. 3 is the side view of Fig. 1;

Fig. 4 is the plan view of clip among Fig. 1.

Embodiment

Fig. 1 is the utility model egr system intake manifold embodiment's explosive view; Fig. 2 is the plan view of gas-injecting pipe among Fig. 1; Fig. 3 is the side view of Fig. 1; Please refer to Fig. 1 to Fig. 3, present embodiment provides the egr system intake manifold, comprising: intake manifold matrix 1 and gas-injecting pipe 2; Offer injecting hole 101 on the intake manifold matrix 1, an end of gas-injecting pipe 2 via injecting hole 101 extend in the intake manifold matrix 1, the other end is in outside the intake manifold matrix 1; The side that gas-injecting pipe 2 is positioned at intake manifold matrix 1 outside is formed with mounting flange 21, be formed with installation base 12 at the outer surface of intake manifold matrix 1 and around injecting hole 101, and by fixedlying connected between mounting flange 21 and the installation base 12 gas-injecting pipe 2 and intake manifold matrix 1 be fixed into one.

Generally speaking, intake manifold matrix 1 can be connected between the intake valve of closure and engine cylinder-body, is mainly used in fresh air is input in the engine cylinder-body; But in egr system, the waste gas that motor need be discharged is partially recycled to be re-injected in the intake manifold matrix 1, and re-inject engine cylinder-body therein with after fresh air mixes, more effectively to utilize waste gas, reduce amount of nitrogen oxides in the combustion gas.

Particularly, intake manifold matrix 1 one ends can be for being used for the mixed gas of fresh air and waste gas is imported the outlet of engine cylinder-body for entrance 13, the other end that enters for fresh air; Injecting hole 101 can be opened on the sidewall of intake manifold matrix 1, preferably, injecting hole 101 can be arranged on the position of close entrance 13 on the intake manifold matrix 1.Mounting flange 21 can be located on the gas-injecting pipe 2 by fixed cover, also can with the gas-injecting pipe formation that is structure as a whole, wherein, mounting flange 21 can be determined according to the required length that makes gas-injecting pipe 2 extend into intake manifold matrix 1 inside with respect to the position of gas-injecting pipe 2; In addition, mounting flange 21 can comprise the seal section 211 that is complementary with injecting hole 101 sizes and the connecting sheet 212 that is extended to form towards periphery by sealed end 211, and can utilize fastening piece to pass connecting sheet 212 to be fixedly attached on the installation base 12 and to realize fixedlying connected between gas-injecting pipe 2 and the intake manifold matrix 1.

In the present embodiment, the part that gas-injecting pipe 2 extend in the intake manifold matrix 1 can replace the air flue in the intake manifold in the prior art, make entrance 13 places that waste gas is entered into intake manifold matrix 1 back, continued to flow to along gas-injecting pipe 2 intake manifold matrix 1 by gas-injecting pipe 2, fully mix the back, flow to engine cylinder-body by outlet with fresh air in just entering into intake manifold matrix 1.

The EGR intake manifold that present embodiment provides need not in the intake manifold matrix air flue to be set, in manufacture process, only need to form a through hole at the intake manifold matrix, thereby, greatly reduce the difficulty of processing of intake manifold, also reduced the cost of EGR intake manifold.

Preferably, gas-injecting pipe 2 can be a bend pipe, and bend pipe is positioned at an end of intake manifold matrix 1 towards entrance 13 bendings; So that waste gas more early meets with fresh air after being flowed out by gas-injecting pipe 2, prolonged the incorporation time of waste gas and fresh air, be conducive to more abundant, mixing effectively.

Further, gas-injecting pipe 2 is positioned at intake manifold matrix 1 an outer end and is set with ring-type joint 23, is arranged with on the joint 23 for the clip 24(that gas-injecting pipe 2 is connected with other pipeline as shown in Figure 4); Joint 23 outsides and between joint 23 and clip 24, be provided with seal ring.That is, the gas-injecting pipe 2 of present embodiment can be connected with intermediate duct by clip 24, and this intermediate duct the other end then can be connected with exhaust emission tube, is delivered to gas-injecting pipe 2 and then flow to the intake manifold matrix again with the waste gas that motor is discharged; Present embodiment arranges seal ring 25 in clip 24 joints, spills to prevent gas, and assurance EGR circulation is effectively carried out.

Further, above-mentioned egr system intake manifold can also comprise at least two bolts, and the mounting flange 21 on the gas-injecting pipe 1 can be spirally connected by this bolt and be fixed on the installation base 12, to make things convenient for the assembly manipulation of gas-injecting pipe 2.

In the above-described embodiments, the end that gas-injecting pipe 2 is positioned at intake manifold matrix 1 can also be fixedly connected with one and give vent to anger and cover 26, and giving vent to anger to cover offers the air outlet hole 261 that at least one passes through for waste gas on 26.

Particularly, give vent to anger and cover 26 and can be round table-like, the end sealing that an end opening, the diameter that its diameter is bigger is less, an end of opening can be weldingly fixed on gas-injecting pipe 2 ends, and the end that covers 26 openings that guarantees to give vent to anger is communicated with gas-injecting pipe 2; Perhaps, the end that covers 26 openings of giving vent to anger can arrange internal thread, and accordingly, the end of gas-injecting pipe 2 can arrange outside thread, covers 26 giving vent to anger and is spirally connected and is fixed on gas-injecting pipe 2 ends; Air outlet hole 261 can be a plurality of the through holes that differ in size, and is opened in respectively to give vent to anger and covers on 26 the sidewall.

Give vent to anger in the present embodiment setting of lid makes waste gas must cover air outlet hole 261 outflows on 26 by giving vent to anger, thereby has just increased the area of contact of waste gas and fresh air, make waste gas and fresh air can be more abundant, mix rapidly; And then help to improve mixed gas in in-engine combustion efficiency.

It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although with reference to aforementioned each embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment's technological scheme of the utility model.

Claims

1. an egr system intake manifold is characterized in that, comprising: intake manifold matrix and gas-injecting pipe; Offer injecting hole on the described intake manifold matrix, an end of described gas-injecting pipe via described injecting hole extend in the described intake manifold matrix, the other end is in outside the described intake manifold matrix; The side that described gas-injecting pipe is positioned at described intake manifold matrix outside is formed with mounting flange, be formed with installation base at the outer surface of described intake manifold matrix and around described injecting hole, and by fixedlying connected between described mounting flange and the described installation base described gas-injecting pipe and described intake manifold matrix be fixed into one.

2. egr system intake manifold according to claim 1 is characterized in that, described intake manifold matrix one end is the outlet that is used for the mixed gas input engine cylinder-body of fresh air and waste gas for entrance, the other end that enters for fresh air; Described injecting hole is arranged on the position of close described entrance on the described intake manifold matrix.

3. egr system intake manifold according to claim 2 is characterized in that, described gas-injecting pipe is a bend pipe, and described bend pipe is positioned at an end of described intake manifold matrix towards described entrance bending.

4. according to claim 1 or 2 or 3 described egr system intake manifold, it is characterized in that, described gas-injecting pipe is positioned at the outer end of described intake manifold matrix and is set with the ring-type joint, is arranged with the clip that is connected with other pipeline for described gas-injecting pipe on the described joint.

5. egr system intake manifold according to claim 4 is characterized in that, the described joint outside and be provided with gasket seal between described joint and described clip.

6. egr system intake manifold according to claim 5 is characterized in that, also comprises at least two bolts, and the mounting flange on the described gas-injecting pipe is spirally connected by described bolt and is fixed on the described installation base.

7. according to claim 1 or 2 or 3 described egr system intake manifold, it is characterized in that the end that described gas-injecting pipe is positioned at described intake manifold matrix is fixedly connected with the lid of giving vent to anger, described give vent to anger to cover offer the air outlet hole that at least one passes through for waste gas.