CN102080611A

CN102080611A - Dual exhaust electric EGR (Exhaust Gas Recirculation) valve

Info

Publication number: CN102080611A
Application number: CN2011100554085A
Authority: CN
Inventors: 朱情琴; 倪铭; 蔡春香; 曾劲平; 都兴鹏
Original assignee: Wuxi Longsheng Technology Co Ltd
Current assignee: Wuxi Longsheng Technology Co Ltd
Priority date: 2011-03-08
Filing date: 2011-03-08
Publication date: 2011-06-01

Abstract

The invention discloses a dual exhaust electric EGR (Exhaust Gas Recirculation) valve, which comprises a valve body, wherein an electric motor is arranged on the valve body; a gearbox is arranged below the electric motor; a center rod is arranged inside the valve body; one end of the center rod is connected with the gearbox through a slider and the other end of the center rod is connected with a valve core; an exhaust gas inlet is arranged on the valve body, matched with the valve core, and communicated with a cavity of the valve body; two exhaust gas outlets, namely a first exhaust gas outlet and a second exhaust gas outlet, are arranged on the valve body; and both the first exhaust gas outlet and the second exhaust gas outlet are communicated with the cavity of the valve body. As the two exhaust gas outlets are arranged on the valve body, same exhaust gas emission can be guaranteed due to the same shape of the gas outlets when exhaust gas passes through the uniform cavity in the valve body from the exhaust gas inlet of the valve body and is uniformly diverted to the exhaust gas outlets; and the exhaust gas inlet uniformity of four cylinders within a certain period can be guaranteed due to the centering distribution of the two gas outlets when the exhaust gas in the two exhaust gas outlets flows to various cylinders in a cylinder head. Compared with the fact that the exhaust gas flows to the cylinders from a gas outlet, uniform gas inlet and full combustion of the four cylinders are ensured and the overall performance of the valve body is improved.

Description

A kind of electronic EGR valve of double gas

Technical field

The present invention relates to the electronic EGR valve in a kind of automobile engine tail gas discharging waste gas recirculating system, belong to engine exhaust emission control gear technical field.

Background technique

Electronic EGR valve plays the EGR gas flow and regulates control action in vehicle engine exhaust gas recirculation system, its major function is an electrical power, impel movement parts motion in the EGR valve, thereby change EGR valve waste gas inlet switch size, reach the purpose of regulating exhaust gas flow.Valve body in the valve is parts wherein, is provided with waste gas inlet, exhaust vent, an even exhaust-gas flow valve body cavity, an inlet flange that is used to install, two exhaust flanges that are used to install.

For the EGR valve outlet directly and the cylinder I of cylinder cap, cylinder I I, cylinder I II, cylinder I V links to each other and the motor that do not link to each other with the intake manifold, the valve body of EGR valve is equipped with a waste gas inlet and an exhaust vent in batches at present, as shown in Figure 1, single air valve waste gas inlet 25 in the single air valve 24 is connected with exhausting waste gas house steward 11, single air valve exhaust vent 26 is connected with exhaust inlet pipe 27, exhaust inlet pipe 27 communicates with four-cylinder again simultaneously, thereby form gas by a mouth of pipe and cylinder I 7, cylinder I I 8, cylinder I II 9, cylinder I V10 communicates, cylinder I 7, cylinder I V 10 is with respect to cylinder I I 8, cylinder I II 9 is far away apart from exhaust inlet pipe 27, thereby air inlet is inhomogeneous in the four-cylinder in the regular hour, influences automotive performance.The small part motor is arranged because discharge capacity is big, the scheme that adopts satisfies flow and solves the air inlet non-uniform phenomenon for two EGR valves are housed at present, so not only increases cost, has also taken the suitable space of motor simultaneously.

Summary of the invention

Technical problem to be solved by this invention provide a kind of simple in structure, volume is little, easy for installation, can solve the flow of large-duty engine exhaust gas recirculation, and link to each other and the relative non-uniform phenomenon of each cylinder intake of motor that do not link to each other with the intake manifold at each cylinder in EGR relief opening and the cylinder cap, make the electronic EGR valve of each cylinder sufficient combustion.

Technological scheme of the present invention is:

A kind of electronic EGR valve of double gas, comprise valve body, valve body is provided with motor, the below of motor is provided with gear-box, be provided with center-pole in the valve body, one end of center-pole is by slide block connection gear case, the other end of center-pole connects spool, a waste gas inlet is set on the valve body, waste gas inlet and spool are suitable, waste gas inlet with the cavity of valve body, valve body is provided with two exhaust vents, first exhaust vent and second exhaust vent, first exhaust vent and second exhaust vent all communicate with the cavity of valve body.

Be provided with bearing in the slide block.

Be extended with gear shaft in the gear-box, be set with eccentric wheel on the gear shaft, the end of gear shaft is stretched in the bearing hole of the bearing that is provided with in the slide block.

Beneficial effect: owing to be provided with two exhaust vents on the valve body,,, can guarantee that the exhausting waste gas amount is identical because the relief opening shape is identical when waste gas when evenly the cavity average mark flow to exhaust vent in by valve body from the valve body waste gas inlet; The exhaust flow of two exhaust vents is when cylinder cap simultaneously, because two relief opening centerings distribute, can guarantee four-cylinder waste gas intake uniformity in the regular hour, with respect to making the four-cylinder air inlet even from a relief opening stream, sufficient combustion, the performance of raising valve body integral body, this structure is owing to only be provided with an EGR valve in vent systems, so simple in structure, cost is low, volume is little.

Description of drawings

Fig. 1 is an EGR valve working state connection diagram of the prior art;

Fig. 2 is an outline drawing of the present invention;

Fig. 3 is an internal structure schematic representation of the present invention;

Fig. 4 is a working state connection diagram of the present invention.

Among the figure, 1-waste gas inlet, 2-the first exhaust vent, 3-the second bivalve exhaust vent, 4-the first exhaust inlet pipe, 5-the second exhaust inlet pipe, 6 air inlet house stewards, 7-cylinder I, 8-cylinder I I, 9-cylinder I II, 10-cylinder I V, 11-exhausting waste gas house steward, 12-valve body, 13-cavity, 14-motor, 15-gear-box, 16-eccentric wheel, 17-bearing, 18-slide block, 19 springs, 20-copper sheathing, 21-center-pole, 22-spool, 23-sensor, 24-single air valve, 25-single air valve waste gas inlet, 26-single air valve exhaust vent, 27-exhaust inlet pipe, 28-gear shaft, 29-cylinder cap.

Embodiment

The invention will be further described below in conjunction with accompanying drawing.

A kind of electronic EGR valve of double gas, comprise valve body 12, valve body 12 is provided with motor 14, the below of motor 14 is provided with gear-box 15, be provided with center-pole 21 in the valve body 12, one end of center-pole 21 is by slide block 18 connection gear casees 15, the other end of center-pole 21 connects spool 22, a waste gas inlet 1 is set on the valve body 12, waste gas inlet 1 is suitable with spool 22, waste gas inlet 1 with communicate with the cavity 13 of valve body 12, valve body 12 is provided with two exhaust vents, first exhaust vent 2 and second exhaust vent, 3, the first exhaust vents 2 and second exhaust vent 3 all communicate with the cavity 13 of valve body 12.

Be provided with bearing 17 in the slide block 18.

Be extended with gear shaft 28 in the gear-box 15, be set with eccentric wheel 16 on the gear shaft 28, the end of gear shaft 28 is stretched in the bearing hole of the bearing 17 that is provided with in the slide block 18.

As shown in Figure 4, waste gas inlet 1 in the valve body 12 is connected with exhausting waste gas house steward 11, first exhaust vent 2 is connected with second exhaust inlet pipe 5 with first exhaust inlet pipe 4 respectively with second exhaust vent 3, first exhaust inlet pipe 4 and 5 liang of pipes of second exhaust inlet pipe communicate with cylinder I 7, cylinder I I 8, cylinder I II 9, cylinder I V 10 by cylinder cap 29, and centering distributes, and it is even to reach in the regular hour in the four-cylinder the relative air inlet of waste gas.When waste gas entered valve waste gas inlet 1, waste gas flow to first exhaust vent 2 by cavity 13 average marks and second exhaust vent 3 is discharged, and when air inlet house steward 6 air inlets, makes the four-cylinder air inlet even, fully burning, the performance of raising automobile.Discharge by exhausting waste gas house steward 11 the fully right back of burning of mixed gas in the four-cylinder, and part is carried out exhaust gas recirculation and entered the EGR valve once more and carry out recirculation, and all the other are discharged in the atmosphere.

As shown in Figure 3, gear shaft 28 in the motor 14 driven gear casees 15 in the double valve body 12 rotates, thereby drive eccentric wheel 16 and bearing 17 rotations, bearing 17 is installed in the slide block 18, simultaneously because slide block 18 is welded as integral body with center-pole 21, thereby convert the straight line motion of center-pole 21 to by rotatablely moving of gear, center-pole 21 is moved up and down realizing in the guiding of copper sheathing 20 behind the spring force that overcomes spring 19, center-pole 21 is riveted into single piece with spool 22 simultaneously, thereby driving spool 22 moves up and down, realize the Push And Release of the suction port 1 of spool 22 and valve body 12, because center-pole 21 links to each other with sensor 23, the movement travel of center-pole 21 is fed back by magnitude of voltage by sensor 23.

When motor was four cylinders, two exhaust vent air displacemenies were identical, were connected with each cylinder in the cylinder cap simultaneously, and when motor was six cylinder machines, this structure also can adopt.

Claims

1. the electronic EGR valve of a double gas, comprise valve body (12), valve body (12) is provided with motor (14), the below of motor (14) is provided with gear-box (15), be provided with center-pole (21) in the valve body (12), one end of described center-pole (21) is by slide block (18) connection gear case (15), the other end of described center-pole (21) connects spool (22), a waste gas inlet (1) is set on the described valve body (12), waste gas inlet (1) is suitable with spool (22), described waste gas inlet (1) with communicate with the cavity (13) of valve body (12), it is characterized in that: described valve body (12) is provided with two exhaust vents, first exhaust vent (2) and second exhaust vent (3), first exhaust vent (2) and second exhaust vent (3) all communicate with the cavity (13) of valve body (12).

2. the electronic EGR valve of double gas according to claim 1 is characterized in that: be provided with bearing (17) in the described slide block (18).

3. the electronic EGR valve of double gas according to claim 2, it is characterized in that: be extended with gear shaft (28) in the described gear-box (15), be set with eccentric wheel (16) on the described gear shaft (28), the end of described gear shaft (28) is stretched in the bearing hole of the bearing (17) that is provided with in the slide block (18).