DE102016223681A1 - Flap assembly for a vehicle - Google Patents

Abstract

In vehicles with internal combustion engines throttle valves are often provided, which are arranged in the air supply and control the air flow for the internal combustion engine. The throttle valves are rotatably mounted in many designs on shafts, which are pivotally mounted in a throttle body. For control purposes, the throttle position is required as input to a control circuit in some vehicles. A flap assembly 1 for a vehicle is proposed having a housing 3, the housing 3 having a flow channel 2 and a bearing receiving space 22 with a flap 4, the flap 4 is arranged in the flow channel 2, with a flap shaft 5, wherein the flap 4 is arranged on the flap shaft 5, with a bearing means 6 for supporting the flap shaft 5 in the housing 3, wherein the bearing means 6 is arranged in the bearing receiving space 22 with a sensor device 23 for detecting the position of the flap 4, wherein the sensor device 23 is arranged at least in sections in the bearing receiving space 22.

Description

The invention relates to a flap assembly for a vehicle having a housing, wherein the housing has a flow channel and a bearing receiving space, with a flap, wherein the flap is arranged in the flow channel, with a flap shaft, wherein the flap is arranged on the flap shaft, with a Bearing means for supporting the flap shaft in the housing, wherein the bearing means is arranged in the bearing receiving space, and with a sensor device for detecting the position of the flap.

In vehicles with internal combustion engines throttle valves are often provided, which are arranged in the air supply and control the air flow for the internal combustion engine. The throttle valves are rotatably mounted in many designs on shafts, which are pivotally mounted in a throttle body. For control purposes, the throttle position is required as input to a control circuit in some vehicles.

The publication DE 197 283 49 A1 , which is probably the closest prior art, relates to a sensor arrangement and a motor control device for an internal combustion engine. In the document, different sensor arrangements are presented, the contactless record the position of the throttle and continue as a sensor signal to the engine control device.

It is an object of the present invention to provide a flap assembly for a vehicle, which is inexpensive to implement. This object is achieved by a flap arrangement with the features of claim 1. Preferred or advantageous embodiments of the invention will become apparent from the dependent claims, the following description and the accompanying drawings.

The invention relates to a flap assembly which is suitable and / or designed for a vehicle. Particularly preferably, the flap arrangement is suitable and / or designed for an internal combustion engine of the vehicle. The vehicle may be a car, truck or bus. Alternatively, the vehicle is designed as a two-wheeled, three-wheeled or four-wheeled. In particular, the vehicle is realized as a motorcycle.

The flap assembly is preferably formed as a throttle assembly. The function of the throttle valve assembly is to control, in particular to regulate and / or control the supplied air for the internal combustion engine. Preferably, the internal combustion engine has a direct injection, the flap assembly is used to control the supplied air into the internal combustion engine. Preferably, the direct injection and the flap assembly forms a common structural unit. In particular, the flap arrangement is arranged in an intake region of the internal combustion engine. Alternatively, the flapper assembly may also be configured as an airflow control device in an exhaust gas recirculation (EGR) system. Further areas of use of the flap arrangement are possible, such as e.g. in the gas supply in fuel cells for vehicles.

The flap assembly has a housing, wherein in the housing a flow channel is arranged for guiding a fluid, in particular gas. In particular, it may be ambient air, recirculated exhaust gases or gases, e.g. Act hydrogen. The housing may be formed as a separate and / or separate housing. Alternatively, the housing has other functional areas, such as a carburetor on. The housing also has a storage compartment.

The flap assembly has a flap. The flap is preferably designed to change an open cross section in the flow channel. Particularly preferably, the flap in a closed state is designed so that it covers at least 95 percent, preferably at least 98 percent of the free or open cross-sectional area of the flow channel. In particular, the flap is pivotally arranged in the flow channel and / or in the housing.

The flap assembly has a flap shaft with the flap disposed on the flap shaft. Preferably, the flap is rotatably mounted on the flap shaft, so that it is pivoted together with the flap shaft.

The flap assembly has at least one bearing device for mounting the flap shaft in the housing. Preferably, the flap arrangement comprises a further bearing device, so that the flap shaft is mounted twice and / or on both sides to the flow channel. In particular, the flow channel is arranged between the bearing device and the further bearing device. The bearing device is arranged in the bearing receiving space. The bearing receiving space may be formed, for example, as a tubular portion or pipe section. Preferably, the bearing receiving space has a round cross section.

The flap assembly comprises a sensor device for detecting the position of the flap. In particular, an angular position of the flap shaft is measured by the sensor device in order to detect the position of the flap. Preferably supplied the detected position of the flap of the engine control unit (ECU) and used as an input in the control of the direct injection.

In the context of the invention, it is proposed that the sensor device is arranged at least in sections in the bearing receiving space. Thus, the bearing receiving space forms a mechanical interface for receiving the bearing device and in addition to receiving the sensor device. Due to the double use of the bearing receiving space is achieved that no further interfaces for integrating the sensor device must be introduced to the housing. Thus, the flap assembly can be made cheaper by the further use of the bearing receiving space as a receiving space for the sensor device.

In an advantageous embodiment of the invention, an annular space is formed in the bearing receiving space. The annular space is formed on the one hand by the outer walls of the bearing receiving space and radially inwardly by the flap shaft. The sensor device and the bearing device are arranged together in the annular space coaxially with the flap shaft. In particular, the bearing device and the sensor device are penetrated centrally and / or coaxially by the flap shaft.

In a preferred structural embodiment of the invention, the sensor device and the bearing device are designed as a common, self-holding assembly. Particularly preferably, the sensor device and the bearing device are realized as a common insert, which are connected to each other captive independently of the housing and can be mounted as the self-holding assembly in the housing. Thus, the bearing device and the sensor device can be mounted as the common assembly in a common operation in the housing.

In a preferred embodiment of the invention, the bearing device is designed as a Wälzkörperlagereinrichtung. Particularly in the case of flap arrangements whose position is read out by sensors, it is advantageous for the flap shaft to be mounted in a particularly low-friction manner in order to enable a rapid and / or sensitive reaction of the flap in interaction with a motor control device. Particularly preferably, the rolling element bearing device rollers as rolling elements, which are particularly preferably designed as cylindrical rollers. In particular, the rolling element bearing device is formed in a single row.

In a preferred embodiment of the invention, the rolling element bearing device has an outer ring with at least one board, wherein the sensor device is mounted on the board. The board forms a stable part of the outer ring, so that the assembly sensor device-bearing device can be made very stable.

In a preferred embodiment of the invention, the outer ring is formed as a drawn sleeve with a flange and with a fixed board. As a result of this embodiment, the bearing device can be produced in a particularly cost-effective manner.

It is particularly preferred that the fixed board carries the sensor device, since this board is realized particularly stable.

In a preferred embodiment of the invention, an inner raceway for the Wälzkörperlagereinrichtung is formed by the flap shaft. Thus roll the rolling elements of the rolling element bearing device directly on the flap shaft. Due to its function, the flap shaft must be stably realized anyway, so that the inner race can be arranged cost-effectively on the flap shaft.

In a preferred embodiment of the invention, the sensor device has a sensor ring, wherein the sensor ring is arranged rotationally fixed on the valve shaft. Thus, the sensor ring with the flap shaft and with the flap is pivoted. The sensor ring can be designed as a mechanically based sensor ring, in particular as a perforated disk or toothed disk. Alternatively, the sensor ring can also carry electromagnetically active areas, such as magnets or at least magnetizable areas. The sensor device further comprises a sensor module, which is designed to detect an angular position of the sensor ring about the pivot axis of the flap shaft. Preferably, the sensor ring is arranged coaxially with the flap shaft.

In a development of the invention, the sensor device has a sensor housing, wherein the sensor disk is arranged in the sensor housing. The sensor housing is designed as a pot, so that a wall to delimitation of the sensor device is formed by the bearing device by a board of the outer ring. Thus, the outer ring can be used twice. For example, the sensor housing is pressed or glued to the outer ring.

In a further development of the invention, the sensor device has a socket for contacting with a motor control device. The socket is at least partially arranged in the storage compartment. Thus, the bearing receiving space for a third function can be used, namely as an interface for the socket.

• 1 eine schematische Längsschnittdarstellung einer Klappenanordnung als ein Ausführungsbeispiel der Erfindung.

Further features, advantages and effects of the invention will become apparent from the following description of a preferred embodiment and the accompanying figures. These show:

• 1 a schematic longitudinal sectional view of a flap assembly as an embodiment of the invention.

The 1 shows a schematic longitudinal sectional view of a flap assembly 1 as an embodiment of the invention. The flap arrangement 1 serves to control a gas passage, in particular air passage, through a flow channel 2 , The flap arrangement 1 For example, it is designed as a throttle valve arrangement for an internal combustion engine, in particular for a carburetor of the internal combustion engine. Here, the flap assembly 1 For example, control a supply air in the carburetor of the engine. Alternatively, the flap assembly 1 also control exhaust gas recirculation.

The flap arrangement 1 has a housing 3 on which the flow channel 2 forms. In the longitudinal section shown is the flow channel 2 formed oval, but this can also be realized circular. The housing 3 is designed, for example, as an aluminum die cast housing.

In the case 3 is a flap 4 , In particular, a throttle valve, arranged, which in the blocking state shown, the free opening cross-section of the flow channel 2 closes or at least largely closes. It can be provided that in the blocking state of the flow channel 2 is completely closed. Alternatively, the flap 4 in the locked state also be easily employed and / or the cross-section of the flap 4 from the free opening cross-section of the flow channel 2 differ so that only a significant part, especially more than 95 percent of the flow channel 2 is closed.

The flap 4 is non-rotatable with a flap shaft 5 connected. The connection can, for example, via a riveted connection 6 respectively. The flap shaft 5 is perpendicular to the longitudinal extent of the flow channel 2 aligned.

The flap shaft 5 is about a storage facility 6 and another bearing device 7 in the housing 3 rotatable, in particular pivotable, stored. The housing 3 has a receiving section for this purpose 8th and another recording section 9 which are formed in the form of a pipe section or as pipe sections and coaxially and / or concentrically with the valve shaft 5 and / or aligned with each other. The storage facility 6 is in the receiving section 8th , the further bearing device 7 is in the further receiving section 9 arranged. The flow channel 2 and / or the flap 4 is between the recording sections 8th . 9 and / or between the storage facilities 6 . 7 arranged. In particular, the receiving sections 8, 9 and the storage facilities 6 . 7 on both sides of the flow channel 2 and / or to the flap 4 positioned.

The storage facilities 6 . 7 are each designed as Wälzkörperlagereinrichtungen and each have a number of roles 10 . 11 as rolling elements. An inner career 12 . 13 for the rollers 10,11 is by a surface of the flap shaft 5 provided. The outer raceway of the storage facility 6 . 7 are through outer rings 14 . 15 educated.

The outer rings 14 . 15 are each as a drawn sleeve with a fixed board and a flange as shelves 16a . b and 17a . b educated. Opposite the valve shaft 5 are the shelves 16a . b . 17a . b through sealing devices 18a . b , 19a, b sealed. The seals 18a . b . 19a . b can be designed as touching or non-contact seals. The seals 18a . b . 19a . b are oriented so that a locking direction in the Wälzkörperräume the storage facilities 6 7 shows in.

Through the receiving section 8th becomes a warehouse reception room 22 formed, which in a cross section perpendicular to the longitudinal extent of the flap shaft 5 is circular.

In this warehouse reception room 22 is the storage facility 6 arranged, for example, pressed.

It is also located in the storage room 22 a sensor device 23 , which serves to adjust the angle of the flap shaft 5 and thus an angular position of the flap 4 metrologically to capture. The sensor device 23 has a sensor ring 24 on which rotatably with the flap shaft 5 and thus rotatably with the flap 4 connected is. The sensor ring 24 For example, it is designed as a toothed ring, which in the direction of rotation about the flap shaft 5 regularly spaced teeth 25 having.

The sensor device 23 also has a sensor module (not shown in the drawing) for detecting the position of the sensor ring 24 , in particular the teeth 25, so that the angular position of the sensor ring 24 and thus the angular position of the flap 4 can be detected metrologically.

The sensor ring 24 is in a sensor housing 26 integrated, which also in the storage room 22 is arranged. The sensor housing 26 has a cylinder section 27 and a radial section 28 on, which is integral with the cylinder portion 27 connected is. The radial section 28 is on one of the storage facilities 6 arranged on the opposite side. The cylinder section 27 abuts axially on the outer ring 14 and is connected to this example, cohesively or via a press fit. This will create a sensor ring receiving space 29 formed on the one side by the board 16 a and on the other side by the radial section 28 is limited. On the radial inside can be a collar 30 at the radial section 28 be formed so that a seal against the sensor ring 24 given is. On the sensor device 23 and in particular on the sensor housing 26 a bush 31 is arranged, which for contacting the sensor device 23 and for transmitting the sensor signals to a motor control device, not shown, is used. The socket 31 is located - at least in sections - in the storage room 22 or within the receiving section 8th ,

The storage facility 6 , the sensor device 23 and the socket 31 together form a self-holding assembly, which can be mounted as a single piece during assembly. This allows the assembly as a single part in the receiving section 8th or in the housing 3 to be assembled. Furthermore, it is not necessary that the housing 3 a first interface for the storage facility 6 and a second interface for connecting the sensor device 23 having.

LIST OF REFERENCE NUMBERS

1

door assembly

2

flow channel

3

casing

4

flap

5

flap shaft

6

Storage facility

7

further storage facility

8th

receiving portion

9

another recording section

10

roll

11

roll

12

Inner raceway

13

Inner raceway

14

outer ring

15

outer ring

16a, b

Borde

17a, b

Borde

18a, b

seal means

19a, b

seal means

20

empty

21

empty

22

Bearing receiving space

23

sensor device

24

sensor ring

25

teeth

26

sensor housing

27

cylinder section

28

radial section

29

Sensor ring accommodation space

30

collar

31

Rifle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19728349 A1 [0003]

Claims (10)

A flap assembly (1) for a vehicle having a housing (3), said housing (3) having a flow channel (2) and a bearing receiving space (22) with a flap (4), said flap (4) being located in said flow channel (4). 2), with a flap shaft (5), wherein the flap (4) on the flap shaft (5) is arranged, with a bearing means (6) for supporting the flap shaft (5) in the housing (3), wherein the bearing means (6) in the bearing receiving space (22) is arranged, with a sensor device (23) for detecting the position of the flap (4), characterized in that the sensor device (23) at least partially in the bearing receiving space (22) is arranged. Flap arrangement (1) according to Claim 1 , characterized in that the bearing receiving space (22) is formed as an annular space, wherein the sensor means (23) and the bearing means (1) are arranged together in the annular space coaxially with the flap shaft (5). Flap arrangement (1) according to Claim 1 or 2 , characterized in that the sensor device (23) and bearing device (6) are designed as a common, self-holding assembly. Flap assembly (1) according to one of the preceding claims, characterized in that the bearing device (6) is designed as a Wälzkörperlagereinrichtung. Flap arrangement (1) according to Claim 4 , characterized in that the Wälzkörperlagereinrichtung has an outer ring (14) with at least one board (16a), wherein the sensor device is mounted on the board (16a). Flap arrangement (1) according to Claim 5 , characterized in that the outer ring (14) is formed as a drawn sleeve with a flange and with a fixed board. Flap assembly (1) according to one of the preceding Claims 4 to 6 , characterized in that an inner raceway (12) for the Wälzkörperlagereinrichtung by the flap shaft (5) is formed. Flap assembly (1) according to any one of the preceding claims, characterized in that the sensor device (23) has a sensor ring (24), wherein the sensor ring (24) is arranged rotationally fixed on the flap shaft. Flap assembly (1) according to one of the preceding claims, characterized in that the sensor device (23) has a sensor housing (26), wherein the sensor disc (24) in the sensor housing (26) in a sensor ring receiving space (29) is arranged and wherein a side wall of the sensor ring accommodating space (29) is formed by the bearing means (6). Flap assembly (1) according to one of the preceding claims, characterized in that the sensor device (23) has a bush (31) for contacting with a motor control device, wherein the bush (31) is arranged at least in sections in the bearing receiving space (22).

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