KR200459732Y1 - Intake Manifold for Vehicle with Vacuum Tank - Google Patents

Abstract

The present invention relates to an intake manifold for a vehicle, and the vacuum chamber is separated into a compartment together with the plenum chamber inside the housing shell of the intake manifold so that a separate vacuum tank is unnecessary, and the manufacturing and assembly process is easy, The reduced number of parts reduces weight and manufacturing costs, and eliminates the need for a separate vacuum tank layout, providing a vehicle intake manifold that increases efficiency in terms of space utilization within the engine room.

Intake Manifold, Vacuum Tank, Vacuum Chamber, Check Valve

Description

Intake Manifold for Vehicle with Vacuum Tank

The present invention relates to an intake manifold for a vehicle. More specifically, the vacuum chamber is divided into the compartment together with the plenum chamber inside the housing shell of the intake manifold so that a separate vacuum tank is unnecessary, and the manufacturing and assembly process is easy, and the number of parts is reduced, thereby reducing the weight and manufacturing. It relates to a vehicle intake manifold which reduces costs and increases efficiency in terms of space utilization in the engine room by eliminating the need for a separate vacuum tank arrangement.

In relation to energy efficiency due to high oil prices, continuous research and production are being conducted to improve the efficiency of vehicle fuel consumption and at the same time to achieve rapid vehicle response. On the other hand, the intake manifold mounted on the engine of the vehicle is a component for supplying air for combustion in the engine, etc. In order to simultaneously satisfy the requirements of fuel economy and high power in recent years, a variable intake valve device or swirl forming valve Research and production of intake manifolds with devices have also been made.

The intake manifold is formed with a plenum chamber into which air is introduced and a runner communicating with the intake manifold to distribute and supply intake air to the combustion chamber of the engine through the runner. By applying runners of different lengths to the manifold, the device allows the different runners to be opened variably according to the state of the vehicle engine. That is, when the variable intake valve device is operated in the closed mode, the length of the runner is relatively long, so that it is adjusted to be suitable for low and medium speed driving conditions, and when the variable intake valve device is operated in the open mode, the length of the runner is relatively shortened, It is adjusted to suit high speed driving conditions. In addition, the swirl forming valve device is a device for generating a swirl phenomenon in which the mixer rotates in the circumferential direction in the combustion chamber of the engine to improve the combustion efficiency of the engine, it is generally mounted on the intake port side of the intake manifold to generate a swirl phenomenon Let's do it.

The variable intake valve device and the swirl forming valve device are configured to be driven by separate actuators according to a signal from the ECU. In general, vacuum pressure is used as a means for transmitting a driving force to the actuator. That is, the vacuum tank is installed in a space separate from the intake manifold, and the vacuum pressure formed in the vacuum tank is transmitted to the actuator, thereby configuring the actuator through the vacuum pressure.

Therefore, the general intake manifold according to the prior art has to manufacture and mount a separate vacuum tank as described above, and thus, manufacturing and assembling work is not easy, and in particular, through the intake air through a separate connection pipe to form a vacuum pressure of the vacuum tank. Additional manufacturing and assembly processes, such as connecting to the manifold and installing check valves in the connecting pipes, were required. In addition, since a separate space for mounting a separate vacuum tank is required, it is inefficient in terms of space utilization in the engine room, and there is a problem such that weight and manufacturing cost increase as the number of parts increases.

Therefore, the present invention has been devised to solve this problem, and the vacuum chamber is separated into the compartment together with the plenum chamber inside the housing shell of the intake manifold so that a separate vacuum tank is not necessary, so that the fabrication and assembly process is unnecessary. The objective is to provide an intake manifold for a vehicle which is easy, reduces the number of parts, reduces the weight and manufacturing cost, and increases the efficiency in terms of space utilization in the engine room by eliminating the space for a separate vacuum tank arrangement.

The present invention provides a vehicle intake manifold including a housing shell in which a plenum chamber and a runner are formed to form an intake flow path, wherein a separating diaphragm is formed inside the housing shell and the plenum is formed by the separating diaphragm. A vacuum chamber is formed which is separated from the chamber, and the separation diaphragm is provided with a check valve unit for allowing air flow from the vacuum chamber toward the plenum chamber.

In this case, a partition plate is formed inside the vacuum chamber of the housing shell, and the vacuum chamber is divided into a plurality, and the plurality of divided vacuum chambers may be formed to communicate with each other by a connecting pipe.

In addition, the housing shell may be coupled to the connection pipe which is in communication with the vacuum chamber to transfer the vacuum pressure of the vacuum chamber to the external device.

The check valve unit may further include an air flow hole formed through the separation diaphragm so that the plenum chamber and the vacuum chamber communicate with each other; And an opening / closing means mounted to close the air flow hole and operable to open the air flow hole by a negative pressure formed in the plenum chamber.

The opening and closing means may further include a valve rod coupled to the separation diaphragm so as to be linearly movable in the longitudinal direction; A head cap positioned at the plenum chamber side and coupled to one end of the valve rod to close the air flow hole; And an elastic member configured to apply an elastic force to the valve rod in a direction in which the head cap is compressed to the separation diaphragm to close the air flow hole.

In addition, the opening and closing means is a valve rod through which the position is fixed through the separation diaphragm; And a head cap made of an elastic material coupled to one end of the valve rod so as to be located at the plenum chamber side, wherein the head cap is compressed to the separating diaphragm by an elastic force to close the air flow hole and to close the plenum chamber. It may be configured to elastically deform from the separation diaphragm by the negative pressure formed in the opening and to open the air flow hole.

According to the present invention, the vacuum chamber is separated into a compartment together with the plenum chamber inside the housing shell of the intake manifold, so that a separate vacuum tank is unnecessary, so that the fabrication and assembly process is easy and the number of parts is reduced. The weight and manufacturing cost are reduced.

In addition, there is no need for a separate vacuum tank arrangement, thereby increasing efficiency in terms of space utilization in the engine room, thereby increasing the speed of the vehicle assembly process.

In addition, by forming a vacuum chamber separately separated by using a separating diaphragm formed inside the housing shell, a check valve unit allowing air flow from the vacuum chamber to the plenum chamber can be mounted in a simple diaphragm, Accordingly, there is an effect that the manufacturing and assembly process can be performed more easily.

In addition, there is an effect that can be used to drive a separate external device using the vacuum pressure of the vacuum chamber integrally formed inside the housing shell even without a separate vacuum tank.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram conceptually illustrating an operating state of a vehicle intake manifold according to an embodiment of the present invention.

As shown in FIG. 1, a vehicle intake manifold according to an embodiment of the present invention includes a plenum chamber VP and runners VPR and VCR communicating therewith in an intake manifold 10, and through an inlet. Inhaled air is supplied from the plenum chamber VP through the runners VPR and VCR to the combustion chamber of the engine. At this time, the variable valve unit 300 that can vary the length of the runner (VPR, VCR) in accordance with the operating state of the engine may be mounted to the site where the plenum chamber (VP) and the runner (VPR, VCR) is connected. On the intake port 140a side of the intake manifold 10, a swirl valve unit 400 may be mounted to cause a swirl phenomenon of the intake air. In addition, a separate vacuum chamber Ve is formed in the intake manifold 10, and a check valve unit 200 that allows the flow of air from the vacuum chamber Ve to the plenum chamber VP is mounted. In this case, as shown in FIG. 1, the vacuum chamber Ve may be divided into two vacuum chambers Ve1 and Ve2 and may be configured to communicate with each other by the connection hose 500.

The variable valve unit 300 and the swirl valve unit 400 may be driven through separate actuators 700, and the actuators 700 are solenoid valves 600 receiving signals from the ECU 800 of the vehicle. It is operated through the control of. In this case, in order to operate the actuator 700 to drive the variable valve unit 300 and the swirl valve unit 400, a separate driving force transmitted to the actuator 700 is required, and the driving force is transmitted from the vacuum chamber Ve. It can be configured to be achieved through vacuum pressure. That is, when the engine is operated to generate negative pressure due to air flow in the plenum chamber VP in the intake manifold 10, a vacuum pressure is generated in the vacuum chamber Ve through the check valve unit 200. This vacuum pressure is transmitted to the actuator 700 through the connection hose 500 and acts as a driving force for the actuator 700. At this time, the solenoid valve 600 is mounted on the connection hose 500 to control the vacuum pressure transmission state to the actuator 700. Through this control, the actuator 700 operates to operate the variable valve unit 300 and the swirl valve. The unit 400 is driven.

The intake manifold 10 according to the embodiment of the present invention operating as described above is configured such that the vacuum chamber Ve is integrally formed in the intake manifold 10 as described below. Such a vacuum chamber Ve Vacuum pressure may be connected to other external devices in addition to the variable valve unit 300 and swirl valve unit 400 may act as a separate driving force.

2 is a perspective view schematically showing a shape of a vehicle intake manifold according to an embodiment of the present invention, and FIG. 3 is a partial exploded view schematically showing an internal structure of a vehicle intake manifold according to an embodiment of the present invention. 4 is a perspective view schematically illustrating the shape of a body shell and a check valve according to an embodiment of the present invention, and FIG. 5 is a view illustrating air flow of an intake manifold for a vehicle according to an embodiment of the present invention. 6 is a cross-sectional view schematically illustrating an operating state of a check valve according to an embodiment of the present invention, and FIG. 7 schematically illustrates an operating state of a check valve according to another embodiment of the present invention. One cross section.

Vehicle intake manifold 10 according to an embodiment of the present invention includes a housing shell 100, a variable valve unit 300 and a swirl valve unit 400, the variable valve unit 300 and swirl valve unit ( 400 may be disposed in the housing shell 100 to achieve a state change, thereby adjusting the intake air flow rate or efficiency according to the driving state of the vehicle, thereby achieving optimal control of the driving performance of the vehicle.

The housing shell 100 according to an embodiment of the present invention includes a plenum chamber (VP) and a runner (runner, VPR and VCR) forming an intake flow path, and is filtered through an air cleaner (not shown). Air is introduced through the vehicle intake manifold inlet (120a). Intake air as intake enters each engine cylinder (not shown) through each intake port 140a via plenum chamber VP and runners VPR and / or VCR.

The housing shell 100 according to an embodiment of the present invention includes a cover shell 110, a body shell 120, an inner shell 130, and a flange shell 140. The body shell 120 includes the vehicle intake manifold inlet 120a described above, wherein the flange shell 140 forms a plenum chamber VP together with the body shell 120. That is, the flange shell 140 is coupled to the body shell 120 through a fusion process by high frequency vibration welding and forms a plenum chamber VP separated in an internal space. The inner shell 130 is disposed between the body shell 120 and the flange shell 140, and the cover shell 110 is disposed outside the body shell 120 to sandwich the inner shell 120 with the inner shell 120 interposed therebetween. 130). The flange shell 140 forms a flange runner (VPR) to be described below with the inner shell 130 and forms a plenum chamber (VP) as described above together with the body shell 120, the flange shell 140 being The inner shell 130 is disposed to face the body shell 120. The cover shell 110 forms a cover runner (VCR) to be described together with the body shell 120 and is disposed to face the inner shell 130 / flange shell 140 with the body shell 120 interposed therebetween.

The cover shell 110, the body shell 120, the inner shell 130 and the flange shell 140 are combined by high frequency vibration welding to form the plenum chamber and runner described above. The runners VPR and VCR include a flange runner VPR and a cover runner VCR. As described above, the flange runner VPR is formed by the flange shell 140 and the inner shell 130 and the cover runner (VPR). The VCR is formed by the body shell 120 and the cover shell 110.

The inner shell 130 is provided with an inner shell flange runner inlet 131, and the flange runner VPR is connected to the flange shell runner 143 of the flange shell 140 and the inner shell runner 133 of the inner shell 130. Inner shell flange runner inlet 131 may define the entry region of the flange runner (VPR). One end of the flange runner VPR communicates with the plenum chamber VP through the inner shell runner inlet 131, and the other end of the flange runner VPR communicates with the cover runner VCR. An end of the flange shell runner 143 is connected to the inner shell flange runner outlet 135 formed in the inner shell 130, and between the inner shell flange runner outlet 135 and the cover runner VCR, a body shell cover runner connector ( 128 is disposed. That is, the other end of the inner shell flange runner outlet 135 and the cover runner inlet 111 of the cover runner VCR are connected to each end forming the body shell cover runner connector 128.

The cover runner VCR is partitioned by the body shell cover runner 129 of the body shell 120 and the cover shell cover runner 113 of the cover shell 110, and the end 115 of the cover shell cover runner 113. Is connected to one side of the body shell cover runner neck 129a of the body shell 120, and an end of the body shell cover runner neck 129a is connected to an intake port 140a formed in the flange shell 140.

Therefore, the air introduced through the air cleaner (not shown) is delivered to the plenum chamber VP through the intake manifold inlet 120a for the vehicle. When the variable valve unit described below forms a closed state, the air introduced by the inner shape design of the plenum chamber VP is evenly transmitted to the flange runner VPR through the inner shell flange runner inlet 131. The air flowing through the flange runner VPR flows to the cover runner VCR through the inner shell flange runner outlet 135 and the cover runner inlet 111. Air flowing along the cover runner VCR is introduced into each cylinder (not shown) through the body shell cover runner neck 129a and the intake port 140a.

On the other hand, the vehicle intake manifold 10 according to an embodiment of the present invention may be provided with a variable valve unit (300). The variable valve unit 300 is disposed in the housing shell 100 and includes a plurality of variable valve flaps 310 to vary the intake flow path formed by the plenum chamber VP and the runners VPR, VCR. To this end, the variable valve air flow port 123 which the variable valve flap 310 of the variable valve unit 300 according to the present invention intends to open and close is directly connected to the housing shell 100, more specifically, the body shell 120. Is formed. 3 and 4, the variable valve air inlet 123 is disposed downstream of the plenum chamber VP of the body shell 120, with the variable valve air inlet 123 interposed therebetween. When the variable valve air flow port 123 is opened by the corresponding arrangement of the VP and the cover runner VCR, the plenum chamber VP may be in direct fluid communication with the cover runner VCR. The variable valve unit 300 includes a plurality of variable valve flaps 310 and a variable valve shaft 320 penetratingly coupled to the plurality of variable valve flaps 310, the variable valve shaft 320 Is rotatably mounted to the body shell 120. Therefore, by rotating the variable valve shaft 320, the variable valve flap 310 is integrally rotated to open and close the variable valve air flow port 123. In this case, the variable valve shaft 320 may be configured to be driven by a separate actuator 700 operated by the vacuum pressure of the vacuum chamber Ve as described above.

In addition, the vehicle intake manifold 10 according to an embodiment of the present invention may include a swirl valve unit 400. The swirl valve unit 400 is mounted to the intake port 140a of the flange shell 140 and configured to generate a swirl phenomenon in the air flowing into each cylinder. That is, the intake port 140a of the flange shell 140 is divided into two, as shown in FIGS. 2 and 3, wherein one of the intake ports 140a is equipped with a swirl valve unit 400 and the swirl According to the operation of opening and closing the intake port 140a of the valve unit 400, the swirl phenomenon of the air flowing into the cylinder is controlled. The swirl valve unit 400 includes a plurality of swirl valve flaps 410 respectively mounted to the plurality of intake ports 140a, and a swirl valve shaft 420 penetratingly coupled to the plurality of swirl valve flaps 410. The swirl valve shaft 420 is rotatably mounted to the flange shell 140. Therefore, by rotating the swirl valve shaft 420, the swirl valve flap 410 rotates integrally to open and close the intake port 140a. In this case, the swirl valve shaft 420 may be configured to be driven by a separate actuator 700 operated by the vacuum pressure of the vacuum chamber Ve, similar to the variable valve shaft 320 as described above.

The intake manifold 10 for a vehicle according to the embodiment of the present invention configured as described above has a separating diaphragm 121 formed inside the housing shell 100, and the plenum chamber VP is formed by the separating diaphragm 121. And a vacuum chamber Ve which is separated from each other is formed. Looking in more detail, the separation shell 121 is formed in the housing shell 100, more specifically, the body shell 120, the flange shell 140 is coupled to the body shell 120, the housing shell 100 In the inner space of the plenum chamber VP and the vacuum chamber Ve are formed on both sides of the separation diaphragm 121. That is, the plenum chamber VP is formed in one space based on the separating diaphragm 121 to form the intake flow path described above, and the other space based on the separating diaphragm 121 is illustrated in FIGS. 3 and 4. As described above, the plenum chamber VP and the vacuum chamber Ve separated from each other are formed in the space between the separating diaphragm 121 and the body shell cover runner neck 129a. At this time, the separator diaphragm 121 is equipped with a check valve unit 200 that allows air flow only from the vacuum chamber Ve to the plenum chamber VP, and thus negative pressure is applied to the plenum chamber VP. When the check valve unit 200 is opened, air flow is generated from the vacuum chamber Ve to the plenum chamber VP, and when the negative pressure is released or the positive pressure is generated in the plenum chamber VP, the check valve unit is generated. The 200 is closed such that mutual air flow does not occur between the vacuum chamber Ve and the plenum chamber VP.

Therefore, in the vehicle intake manifold according to an embodiment of the present invention, when a negative pressure is generated in the plenum chamber VP in accordance with the intake air flow when the engine is operated, the vacuum chamber Ve is provided through the check valve unit 200. Air flows from the plenum chamber VP to a vacuum pressure in the vacuum chamber Ve, and the vacuum pressure may act as a driving force for the separate actuator 700 as described above. That is, as shown in FIG. 1, a separate actuator 700 for opening and closing the variable valve unit 300 and the swirl valve unit 400 may be connected to the vacuum chamber Ve through the connection hose 500, respectively. The vacuum pressure formed by the vacuum chamber Ve is transmitted to the actuator 700 through the connection hose 500, and the actuator 700 is driven by the vacuum pressure, and the variable valve unit 300 and the swirl valve unit ( 400 may be configured to open and close. At this time, the connection hose 500 is equipped with a separate solenoid valve 600 that operates in accordance with the signal of the ECU 800 may be configured to open and close the flow path of the connection hose 500, accordingly the solenoid valve 600 Is opened according to the signal of the ECU 800, the vacuum pressure is transmitted to the actuator 700 to open the variable valve unit 300 and swirl valve unit 400, the solenoid valve 600 is a signal of the ECU 800 In accordance with this, the vacuum pressure is not transmitted to the actuator 700 so that the variable valve unit 300 and the swirl valve unit 400 may be configured to be closed. In addition, the intake manifold for a vehicle according to an embodiment of the present invention may be configured in various ways such that the vacuum pressure by the vacuum chamber Ve acts as a driving force for operating other external devices.

5A and 5B schematically show an internal structure of the intake manifold 10 in which such a vacuum chamber Ve is formed, which is separated from the plenum chamber VP by a separating plate 121. The space of Ve and the flow path of air are shown. 5A shows that the variable valve unit 300 and the swirl valve unit 400 are closed, and the flow of air during the intake stroke of the engine is carried out from the plenum chamber VP to the flange runner VPR and the cover runner VCR. It is generated so as to pass through the intake port (140a) and is formed so that a swirl phenomenon occurs when entering the cylinder. 5B shows that the variable valve unit 300 and the swirl valve unit 400 are open, such that the flow of air passes from the plenum chamber VP through the variable valve air inlet 123 through the cover runner VCR. Is generated and is formed so that a swirl phenomenon does not occur when passing through the intake port 140a. At this time, the check valve unit 200 of the separating diaphragm 121 is opened by the negative pressure of the plenum chamber VP as in FIG. 5A, and a vacuum pressure is formed in the vacuum chamber Ve. The opening and closing states of each of the variable valve unit 300 and the swirl valve unit 400 may be variously combined according to the driving state of the engine, and the combination of the various opening and closing states may be set in the vacuum chamber Ve when the engine is running. In the state where the pneumatic pressure is generated and maintained, it may be achieved in the above-described manner through the control of the solenoid valve 600 connected to the actuators 700 of the respective valve units 300 and 400.

As such, the vacuum chamber Ve according to the embodiment of the present invention has such a vacuum because the connection hose 500 may be coupled to communicate with the vacuum chamber Ve so that the vacuum pressure may be transmitted to a separate external device. In the housing shell 100 forming the chamber Ve, connection ports 124 and 144 to which the connection hose 500 may be inserted may be formed. The connection ports 124 and 144 may be formed in the body shell 120 or the flange shell 140 forming the vacuum chamber Ve, and the positions of the connection ports 124 and 144 may be variously changed according to the overall arrangement. Do.

Meanwhile, the vacuum chamber Ve may be divided into two as shown in FIGS. 3 and 4, which may be divided into two or more as necessary. The vacuum chamber Ve is dividedly formed in such a manner that a divider 125 is formed in a space of the vacuum chamber Ve of the body shell 120, and the vacuum chamber Ve is divided according to the divider 125. Can be formed. In this case, the flange shell 140 coupled to the body shell 120 should be correspondingly formed so that the vacuum chamber Ve may be divided according to the partition plate 125. As such, when the vacuum chamber Ve is divided into a plurality, the check valve units 200 may be mounted on the divided vacuum chambers Ve1 and Ve2, respectively, so that separate vacuum pressures may be generated. As shown in FIG. 1, the check valve unit 200 is mounted only in one of the divided vacuum chambers Ve1 and Ve2, and each of the divided vacuum chambers Ve1 and Ve2 has a separate connection hose ( It may be configured in a form that is connected to each other by 500) one equal vacuum pressure is formed. In this case, as shown in FIG. 1, a connection port 144 communicating with the divided vacuum chambers Ve1 and Ve2 may be formed in the flange shell 140 so that the connection hose 500 may be inserted and coupled thereto. will be.

As described above, the vehicle intake manifold according to the exemplary embodiment of the present invention does not need to separately install the vacuum chamber Ve because the vacuum chamber Ve is integrally formed inside the housing shell 100. This reduces component count, eases assembly, and reduces weight and manufacturing costs.

Next, looking at the configuration and operation state of the check valve unit 200 according to an embodiment of the present invention to be mounted through the separation plate 121 in detail, as shown in Figure 6 and 7 check valve unit 200 ) Is mounted to close the air flow hole 240 and the air flow hole 240 formed through the separation plate 121 so that the plenum chamber VP and the vacuum chamber Ve communicate with each other. And an opening / closing means 210 operable to open the air flow hole 240 by the negative pressure formed in VP). That is, when a negative pressure is formed in the plenum chamber VP, the opening and closing means 210 opens the air flow hole 240 so that air flows from the vacuum chamber Ve to the plenum chamber VP, and the plenum chamber When the negative pressure is released to the VP, the opening and closing means 210 is configured to close the air flow hole 240 again to block the air flow.

The opening and closing means 210 may be configured in the form of a hinge flap (not shown) that is hinged to the separating plate 121 to rotate to open and close the air flow hole 240, a separate link device or a pressure sensor, etc. It may be configured in such a way to open and close the air flow hole 240, the opening and closing means 210 according to an embodiment of the present invention is a valve rod 212, the head cap 211 as shown in FIG. And an elastic member 214. The valve rod 212 is inserted into the coupling hole 230 penetrating through the separating plate 121 to be linearly movable in the longitudinal direction, and air flows at one end of the valve rod 212 at the plenum chamber VP side. The head cap 211 is coupled to close the hole 240. At this time, the head cap 211 is coupled to be located on the plenum chamber (VP) side is pressed to one surface of the plenum chamber (VP) side of the separation plate 121 and formed to close the air flow hole 240 do. The elastic member 214 is configured such that the head cap 211 is pressed against the separating diaphragm 121 and exerts an elastic force on the valve rod 212 in the direction of closing the air flow hole 240. The elastic member 214 may be configured in the form of a leaf spring (not shown) coupled to the outer circumferential surface of the valve rod 212, the valve rod 212 as shown in Figure 6 according to an embodiment of the present invention It may be configured in the form of a coil spring inserted in. When the elastic member 214 is applied as a coil spring inserted into the valve rod 212 as described above, the stopper 213 is mounted at the end of the valve rod 212 so that the elastic member 214 can be fixed. Would be preferred.

According to such a configuration, when the check valve unit 200 according to the embodiment of the present invention does not generate negative pressure in the plenum chamber VP as shown in FIG. 6 (a), the elastic force of the elastic member 214 is used. As a result, the valve rod 212 is elastically biased toward the vacuum chamber Ve, and the head cap 211 closes the air flow hole 240 of the separation diaphragm 121. On the other hand, when negative pressure is generated in the plenum chamber VP as shown in FIG. 6B, the valve rod 212 and the head cap 211 are moved toward the plenum chamber VP by the negative pressure. The air flow hole 240 is opened to move. Therefore, the air in the vacuum chamber Ve moves to the plenum chamber VP through the air flow hole 240, whereby a vacuum pressure is formed in the vacuum chamber Ve. When the negative pressure is released to the plenum chamber VP in this state, the valve rod 212 and the head cap 211 close the air flow hole 240 again by the elastic return force of the elastic member 214. It returns to the state (a) of.

On the other hand, the opening and closing means 210 of the check valve unit 200 according to another embodiment of the present invention may be composed of a valve rod 212 and the head cap 211 without an elastic member as shown in FIG. have. Referring to other parts of the opening and closing means 210 compared to the configuration shown in FIG. 6, the head cap 211 is coupled to one end of the plenum chamber VP side of the valve rod 212. The head cap 211 is formed of an elastic material and compressed to the separating plate 121 and configured to close the air flow hole 240. That is, when no negative pressure is generated in the plenum chamber VP as shown in FIG. 7A, the head cap 211 closes the air flow hole 240 by its own elastic force, and When negative pressure is generated in the plenum chamber VP as shown in b), the negative pressure is elastically deformed to be separated from the separating diaphragm 121 and is configured to open the air flow hole 240. When the negative pressure of the plenum chamber VP is released in this state, the head cap 211 is elastically returned again and is compressed to the separating diaphragm 121 to close the air flow hole 240. At this time, it is preferable that the valve rod 212 inserted into the coupling hole 230 of the separating plate 121 is coupled so as to be fixed in a non-movable position. To this end, the valve rod 212 may be inserted into the coupling hole 230 in a fitting manner, or may be coupled to be engaged through separate coupling protrusions and coupling grooves corresponding to each other. In addition, the stopper 213 may be coupled to the end of the valve rod 212 to strengthen the coupling fixing force with the separating diaphragm 121.

As described above, the vehicle intake manifold 10 according to the embodiment of the present invention has a check valve because the vacuum chamber Ve is integrally formed inside the housing shell 100 by the separating diaphragm 121. Since the unit 200 may be manufactured in a simple configuration so as to penetrate the separation plate 121, the manufacturing process may be easily performed.

The description above is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be interpreted as being included in the scope of the present invention.

1 is a block diagram conceptually showing an operating state of a vehicle intake manifold according to an embodiment of the present invention;

2 is a perspective view schematically showing a shape of a vehicle intake manifold according to an embodiment of the present invention;

3 is a partially exploded perspective view schematically showing an internal structure of a vehicle intake manifold according to an embodiment of the present invention;

4 is a view schematically showing the shape of a body shell and a check valve according to an embodiment of the present invention,

5 is a cross-sectional view showing the air flow of the intake manifold for a vehicle according to an embodiment of the present invention,

6 is a cross-sectional view schematically showing an operating state of a check valve according to an embodiment of the present invention;

7 is a cross-sectional view schematically showing an operating state of a check valve according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: housing shell 120: body shell

121: separation plate 200: check valve

210: opening and closing means 240: air flow hole

Claims (6)

A vehicle intake manifold comprising a housing shell having a plenum chamber and a runner formed therein to form an intake flow path, A separating diaphragm is formed inside the housing shell and a vacuum chamber is formed to be separated from the plenum chamber by the separating diaphragm, and the separating diaphragm permits air flow from the vacuum chamber toward the plenum chamber. The check valve unit is mounted through, The check valve unit An air flow hole formed through the separation diaphragm so that the plenum chamber and the vacuum chamber communicate with each other; And And an opening / closing means mounted to close the air flow hole and operable to open the air flow hole by a negative pressure formed in the plenum chamber. The method of claim 1, A partition plate is formed in the vacuum chamber of the housing shell so that the vacuum chamber is divided into a plurality, and the plurality of divided vacuum chambers are formed so as to communicate with each other by a connecting pipe. The method of claim 1, The housing shell is an intake manifold for the vehicle, characterized in that the connection pipe is connected to communicate with the vacuum chamber to transfer the vacuum pressure of the vacuum chamber to the external device. delete The method of claim 1, The opening and closing means A valve rod coupled to the separation diaphragm so as to be linearly movable in the longitudinal direction; A head cap positioned at the plenum chamber side and coupled to one end of the valve rod to close the air flow hole; And An elastic member for compressing the head cap to the separation diaphragm to apply an elastic force to the valve rod in a direction of closing the air flow hole; Intake manifold for vehicles comprising a. The method of claim 1, The opening and closing means A valve rod penetratingly coupled to the separation diaphragm to fix the position; And An elastic head cap coupled to one end of the valve rod to be located at the plenum chamber side Wherein the head cap is compressed to the separating diaphragm by an elastic force to close the air flow hole and to elastically deform from the separation diaphragm by the negative pressure formed in the plenum chamber to open the air flow hole. An intake manifold for a vehicle.

Images