CN201539329U

CN201539329U - Two-stage variable air inlet manifold

Info

Publication number: CN201539329U
Application number: CN2009201873404U
Authority: CN
Inventors: 刘国权; 张敏; 张建波
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2009-09-04
Filing date: 2009-09-04
Publication date: 2010-08-04
Anticipated expiration: 2019-09-04

Abstract

The utility model relates to a two-stage variable air inlet manifold that is applied to an automobile engine. The air passage of the air inlet manifold is internally provided with a valve I and a valve II that can rotate in the air passage; the valve I is arranged in a joint by which the air passage of the air inlet manifold is connected with a cylinder cover; the valve II is arranged at a joint by which the air passage of the air inlet manifold is connected with a resonance chamber; and the shapes of the valve I and the valve II are respectively coincident with the shapes of the air passages of the air inlet manifold at the connection positions. According to the technical scheme, the joint by which the air passage of the air inlet manifold is connected with the cylinder cover are connected is provided with the valve I; the size of the inlet airflow is controlled by the inclined angle formed by the rotating of the valve, the combustion performance of the engine is improved, and the economy of the fuel oil is improved; the joint of the air passage of the air inlet manifold and the resonance camber is provided with the valve II; and the length of the path by which the airflow passes the air passage of the air inlet manifold is changed by the inclined angle formed by the rotating of the valve II; therefore, the air inlet manifold can runs under different working conditions, and the torque and power are improved.

Description

The secondary variable intake manifold

Technical field

The utility model relates to a kind of intake manifold, relates to a kind of secondary variable intake manifold that is applied to motor car engine specifically.

Background technique

Intake manifold is the key position in the engine body, and the quality of design can directly have influence on the performance of motor.Present air intake manifold of automotive engine mouth of pipe place airflow pattern is unalterable, fuel oil can not with full and uniform the mixing of air, combustion efficiency is not high, fuel economy is low, just our fuel consumption of usually said automobile is big; Simultaneously, motor is in whole operation interval, when middle low-speed running, need thin and long intake manifold, to obtain the high moment of torsion output of low speed, then need short and thick intake manifold to obtain big power in high speed, and the length of present engine intake manifold is immutable, when high engine speeds or high-load operation, adopt long intake manifold to cause the charging efficiency deficiency, engine power descends, when low engine speed or light running, if the length of intake manifold is too short, then gas can not be realized inertia supercharging to improve charging efficiency, causes the moment of torsion of motor to reduce.

Summary of the invention

The purpose of this utility model just provides the high intake manifold of a kind of fuel efficiency.

For achieving the above object, the utility model has adopted following technological scheme: be provided with the valve block one and the valve block two that can rotate in the air flue of intake manifold within it, valve block one is arranged on the jointing that the air flue of intake manifold links to each other with cylinder head, valve block two is arranged on the jointing place of the air flue and the resonant cavity of intake manifold, and the shape of valve block one and valve block two matches with the air flue shape of the intake manifold of its placement respectively.

As shown from the above technical solution, the utility model is provided with valve block one at the jointing that the air flue of intake manifold links to each other with cylinder head, control the size of charge air flow by the formed angle of inclination of the rotation of valve block, improved the combustion performance of motor, improved fuel economy; Be provided with valve block two at the air flue of intake manifold and the jointing place of resonant cavity, the length in the path of walking when changing air-flow through the intake manifold air flue by the formed angle of inclination of the rotation of valve block two, it can be turned round under different operating modes, improved moment of torsion and power.

Description of drawings

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

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

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2;

Fig. 5 is the schematic representation of valve block;

Fig. 6 is the schematic representation that four valve blocks one link to each other;

Fig. 7 is the schematic representation that four valve blocks two link to each other;

Fig. 8 is the another kind of linkage structure schematic representation of valve block;

Fig. 9 is motor service chart of gas in the intake manifold when low-speed running;

Figure 10 is motor service chart of gas in the intake manifold when running up.

Embodiment

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

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, be provided with the valve block 1 and the valve block 2 20 that can rotate in the air flue of intake manifold within it, valve block 1 is arranged on the jointing that the air flue of intake manifold links to each other with cylinder head, valve block 2 20 is arranged on the jointing place of the air flue and the resonant cavity 30 of intake manifold, and the shape of valve block 1 and valve block 2 20 matches with the air flue shape of the intake manifold of its placement respectively.

As preferred version of the present utility model, it is material that intake manifold is selected plastics for use, and its air flue inwall is more smooth with respect to alloy product like this, is convenient to the circulation of gas.Be chosen in and with valve block 2 20 the corresponding airway walls in position be set and be provided with flexible pipe, promptly be provided with flexible pipe, can make the gas flow smooth transition in the cavity like this, avoid the generation of eddy current at the accent place of resonant cavity 30.

The outside of intake manifold is provided with three-way pipe 60, and in the three-way pipe 60 two are in charge of 61,62, and the import with vacuum actor 1, vacuum actor 2 21 links to each other with solenoid valve 2 22 through solenoid valve 1 respectively, and another root is in charge of 63 and is connected with connecting tube 50.

Connecting tube 50 is arranged on the outside of intake manifold, is used to connect resonant cavity 30 and vacuum chamber 40 in the intake manifold, another root be in charge of 63 with pipeline that resonant cavity 30 communicates in be provided with one-way valve 51.

One-way valve 51 effect is that the gas in the vacuum chamber 40 is entered resonant cavity 30 by one-way valve 51, makes in the vacuum chamber 40 it is negative pressure, and certain degree of vacuum is arranged, and in the time of solenoid valve 2 22 conductings, resonant cavity 30 is negative inspiratory pressures, and rotary valve plate 2 20 is opened like this; When being malleation in the resonant cavity 30, air-breathing by vacuum chamber 40, make rotary valve plate 2 20 open, this moment, one-way valve 51 can prevent that also the gas of resonant cavity 30 from entering vacuum chamber 40, like this, just maintain negative pressure in the vacuum chamber 40 always, be in vacuum state, replenish the deficiency of pull of vacuum, promptly guarantee to have all the time sufficient vacuum to offer vacuum actor 1 and vacuum actor 2 21.

As shown in Figure 5, described valve block 1 and valve block 2 20 roughly are waist shape, and the junction of itself and engine fuel injector is provided with

recess

14,24.

Intake manifold is provided with three air flues at least, is equipped with corresponding valve block 1 and valve block 2 20 in each air flue, and valve block 1 horizontally rotates or vertical rotation around its rotating shaft respectively with valve block 2 20.The number that is provided with of air flue is corresponding with the cylinder number of motor, three air flues of outfit as three cylinders, four air flues of the outfit of four cylinders, the utility model is that example describes with the four cylinder engine, be to be provided with four air flues in the intake manifold, as Fig. 6, shown in Figure 7, four valve blocks 1 and four valve blocks 2 20 of being used for four air flues are used rotating shaft 13 respectively, 23 are linked to be an integral body, the outlet of vacuum actor 1 and vacuum actor 2 21 links to each other with the rotating shaft 13 of valve block 1 and the rotating shaft 23 of valve block 2 20 respectively, valve block 1 and valve block 2 20 are respectively around its rotating

shaft

13,23 horizontally rotate, rotating shaft 13, the 23rd, the airway walls of passing through each air flue is linked to be four valve blocks 1 and four valve blocks 2 20 whole, rotating

shaft

13,23 positions of matching with each airway walls are provided with seal ring.

As preferred version of the present utility model, be provided with seal ring, be in order to prevent gas leakage, to play a better airtight effect, can selecting for use material such as rubber to make seal ring in the joint of four airway walls.Select with rotating

shaft

13,23 four valve blocks 1 and four valve blocks 2 20 to be linked to be an integral body, the running by vacuum actor 1 and vacuum actor 2 21 just can directly drive four valve blocks 1 and four valve blocks 2 20 are worked simultaneously with regard to sample; Select valve block 1 and valve block 2 20 13,23 to horizontally rotate around the shaft respectively, be that valve block 1 and valve block 2 20 are the rotation that substantially horizontal is carried out at the center with

rotating shaft

13,23 respectively, such one is conveniently to carry out the connection of each valve block, structure is simple relatively in addition, the convenient layout, under the situation of space and structure permission, 2 20 vertical rotations also are feasible schemes with valve block to make valve block 1, as shown in Figure 8.

Concrete working procedure is as follows:

When automobile turns round under different operating modes, ECU (engine electric-controlled unit) gives one 12 one signals of solenoid valve, solenoid valve 1 is opened, vacuum in resonant cavity 30 and the vacuum chamber 40 moves up by 61 diaphragms that drive in the vacuum actor 1 of being in charge of of three-way pipe 60, thereby control rotary valve plate 1 rotates to different angles, fuel oil is mixed improve, fuel economy improves.Specifically, motor is when low speed or light running, and the opening angle of rotary valve plate 1 is little, and the air inlet of vacuum is few like this, and gasoline combustion is just few, the Economy height; At this moment ECU gives 2 22 1 signals of solenoid valve, solenoid valve 2 22 cuts out, at this moment vacuum actor 2 21 can not conducting, this moment, rotary valve plate 2 20 was closed, and gas enters in the cylinder, by long air flue as shown in Figure 9, gas is pressed the operation of direction shown in the key head, at this moment the inertia of gas increases, and can improve charging efficiency, and Engine torque increases; Motor is when high speed or high-load operation, rotary valve plate one 10 complete openings, at this moment ECU gives 2 22 1 signals of solenoid valve, solenoid valve 2 22 is opened, vacuum in resonant cavity 30 and the vacuum chamber 40 moves up by 62 diaphragms that drive in the vacuum actor 2 21 of being in charge of in the three-way pipe 60, thereby control rotary valve plate 2 20 is opened, gas enters in the cylinder by losing heart, as shown in figure 10, gas is pressed the operation of direction shown in the key head, at this moment reduced intake resistance, charging efficiency is improved, and engine power improves.

Claims

1. secondary variable intake manifold, it is characterized in that: be provided with the valve block one (10) and the valve block two (20) that can rotate in the air flue of intake manifold within it, valve block one (10) is arranged on the jointing that the air flue of intake manifold links to each other with cylinder head, valve block two (20) is arranged on the jointing place of the air flue and the resonant cavity (30) of intake manifold, and the shape of valve block one (10) and valve block two (20) matches with the air flue shape of the intake manifold of its placement respectively.

2. secondary variable intake manifold according to claim 1, it is characterized in that: the outside of intake manifold is provided with three-way pipe (60), be in charge of (61), (62) for two in the three-way pipe (60) and link to each other with the import of vacuum actor one (11) with vacuum actor two (21) with solenoid valve two (22) through solenoid valve one (12) respectively, another root is in charge of (63) and is connected with connecting tube (50).

3. secondary variable intake manifold according to claim 2, it is characterized in that: connecting tube (50) is arranged on the outside of intake manifold, resonant cavity (30) in the intake manifold is connected by connecting tube (50) with vacuum chamber (40), another root be in charge of (63) with pipeline that resonant cavity (30) communicates in be provided with one-way valve (51).

4. secondary variable intake manifold according to claim 2, it is characterized in that: intake manifold is provided with three air flues at least, be equipped with corresponding valve block one (10) and valve block two (20) in each air flue, valve block one (10) and valve block two (20) along continuous straight runs or vertical rotation.

5. secondary variable intake manifold according to claim 2, it is characterized in that: be provided with four air flues in the intake manifold, one (10) and four valve block two (20) of four valve blocks that is used for four air flues uses rotating shaft (13), (23) to be linked as an integral body respectively, and valve block one (10) and valve block two (20) horizontally rotate around its rotating shaft (13), (23) respectively.

6. according to claim 2 or 5 described secondary variable intake manifolds, it is characterized in that: the outlet of vacuum actor one (11) and vacuum actor two (21) links to each other with the rotating shaft (13) of valve block one (10) and the rotating shaft (23) of valve block two (20) respectively.

7. secondary variable intake manifold according to claim 2, it is characterized in that: rotating shaft (13), (23) are passed through each airway walls one (10) and four valve block two (20) of four valve blocks are linked as an integral body, and the position of matching with airway walls in rotating shaft (13), (23) is provided with seal ring.

8. secondary variable intake manifold according to claim 2 is characterized in that: described valve block one (10) and valve block two (20) roughly are waist shape, and the junction of itself and engine fuel injector is provided with recess (14), (24).

9. secondary variable intake manifold according to claim 6 is characterized in that: the airway walls that matches with valve block two (20) positions is provided with flexible pipe.