Crankcase ventilation pipe connection, engine and vehicle

Abstract

The utility model relates to vehicle technical field, concretely provides a crankcase ventilation pipe joint, engine and vehicle, and aims at solving the technical problem that pressure sensor is difficult to measure the air pressure in the ventilation pipe accurately in the prior art, for this purpose, the utility model's crankcase ventilation pipe joint includes: the joint pipe body, forms the inside flow channel suitable for connecting with the crankcase and ventilation pipe respectively in the inside of joint pipe body, and is provided with the first air inlet hole with inside flow channel formation fluid communication on the pipe wall of joint pipe body, and pressure sensor, pressure sensor is arranged on the pipe wall, and it includes the casing and the pressure response piece arranged in the casing, and is provided with the second air inlet hole with outside environment formation fluid communication on the casing, wherein, the pressure response piece has the first response surface opposite the first air inlet hole and the second response surface opposite the second air inlet hole, the utility model crankcase ventilation pipe joint can improve the measurement accuracy of pressure sensor.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically providing a crankcase ventilation pipe joint, an engine, and a vehicle. Background Technology

[0002] The crankcase is a closed cavity in the lower part of the engine cylinder block that houses moving parts such as the crankshaft and connecting rods. It is usually cast as a single piece with the cylinder block (integral structure) or designed as a separate component (separate structure). It is an important part of the engine lubrication system and the main storage and circulation site for engine oil.

[0003] Currently, a positive crankcase ventilation valve (PCV valve) is typically used to guide the air-fuel mixture (containing unburned fuel, water vapor, exhaust gases, etc.) that has entered the crankcase back to the intake system through a ventilation duct (or "intake manifold"), thereby reducing pollution and oil deterioration. To monitor for leaks or detachments in the ventilation duct, existing technology has developed a connector with a pressure sensor. This connector connects to both the crankcase and the ventilation duct, and the built-in pressure sensor can monitor the internal pressure of the ventilation duct in real time, thus determining whether a leak or detachment has occurred.

[0004] The air pressure inside the ventilation duct is affected by many factors, including the opening of the crankcase ventilation valve, engine speed, and sealing performance, and the value range is typically between 40 kPa and 80 kPa. Because the airflow inside the ventilation duct is not stable, pressure sensors cannot accurately measure the air pressure inside the ventilation duct, which poses a risk of misjudgment.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the technical problem that pressure sensors in the prior art are difficult to accurately measure the air pressure inside ventilation ducts.

[0007] In a first aspect, the present invention provides a crankcase ventilation pipe connector. The crankcase ventilation pipe connector includes: a connector body, wherein an internal flow channel is formed inside the connector body to be connected to a crankcase and a ventilation pipe respectively, and a first air inlet is formed on the pipe wall of the connector body to form fluid communication with the internal flow channel; and a pressure sensor, wherein the pressure sensor is arranged on the pipe wall, and includes a housing and a pressure sensing element arranged within the housing, and a second air inlet is formed on the housing to form fluid communication with the external environment, wherein the pressure sensing element has a first sensing surface opposite to the first air inlet and a second sensing surface opposite to the second air inlet.

[0008] Those skilled in the art will understand that the crankcase ventilation pipe connector of this utility model includes a connector pipe body and a pressure sensor. An internal flow channel is formed inside the connector pipe body, allowing the connector pipe body to form fluid communication with both the crankcase and the ventilation pipe. A first air inlet is formed on the pipe wall of the connector pipe body, allowing airflow from the internal flow channel to form fluid communication through the first air inlet. The pressure sensor is arranged on the pipe wall of the connector pipe body, giving the crankcase ventilation pipe connector a compact structure. The pressure sensor includes a housing and a pressure sensing element disposed within the housing. A second air inlet is formed on the housing, allowing fluid communication with the external environment. In the assembled state, the first sensing surface of the pressure sensing element faces the first air inlet, and the second sensing surface of the pressure sensing element faces the second air inlet. Therefore, the airflow from the internal flow channel can directly act on the first sensing surface of the pressure sensing element through the first air inlet, and correspondingly, the airflow from the external environment can directly act on the second sensing surface of the pressure sensing element through the second air inlet. In other words, the crankcase ventilation pipe connector of this invention can simultaneously sense the internal and external pressures of the connector pipe body, accurately obtain the pressure difference, avoid measurement errors caused by pressure loss, improve the measurement accuracy of the pressure sensor, and thus provide data support for monitoring the pressure status of the crankcase ventilation system.

[0009] In the preferred embodiment of the crankcase ventilation pipe joint described above, the pressure sensor is detachably mounted on the pipe wall. This detachable mounting not only facilitates the installation, disassembly, maintenance, and replacement of the pressure sensor, reducing maintenance costs and improving maintenance efficiency, but also allows for modular design to meet the pipe type requirements of different crankcase ventilation pipe joint specifications.

[0010] In the preferred embodiment of the crankcase ventilation pipe connector described above, multiple spaced-apart snap-fit ​​protrusions are formed on the pipe wall, each snap-fit ​​protrusion has a snap-fit ​​hole, and snap-fit ​​claws are formed on the housing to snap into the corresponding snap-fit ​​holes. This configuration allows the pressure sensor to easily snap into the connector pipe body, ensuring convenient installation, accurate positioning, and a secure connection.

[0011] In the preferred embodiment of the crankcase ventilation pipe connector described above, an annular limiting groove is formed on the pipe wall, and an annular limiting protrusion that can be inserted into the annular limiting groove is formed on the housing. This configuration further enhances the stability and positioning accuracy of the connection between the pressure sensor and the connector pipe body, preventing the pressure sensor from shaking or shifting during use.

[0012] In the preferred embodiment of the crankcase ventilation pipe joint described above, a sealed connection is formed between the annular limiting protrusion and the annular limiting groove using sealant. This design effectively prevents gas leakage and ensures the accuracy of pressure sensor measurement data.

[0013] In the preferred embodiment of the crankcase ventilation pipe joint described above, the pressure sensor further includes a control board disposed within the housing, a communication interface connected to the housing, and a pin extending from the control board to the communication interface. The pressure sensing element is disposed on the control board and forms a communication connection with the pin. Through this configuration, the pressure signal collected by the pressure sensing element can be conveniently and accurately processed and transmitted, facilitating further analysis and monitoring of the pressure data.

[0014] In the preferred embodiment of the crankcase ventilation pipe joint described above, the insertion direction of the communication interface is parallel or perpendicular to the extension direction of at least a portion of the joint pipe body. This arrangement enriches the pipe type design of the crankcase ventilation pipe joint, allowing for the selection of appropriate pipe types based on actual installation space and layout, thereby improving installation convenience and flexibility.

[0015] In the preferred embodiment of the crankcase ventilation pipe connector described above, an air intake channel communicating with the first air intake hole is formed on the pipe wall, wherein the diameter of the air intake channel is smaller than the diameter of the first air intake hole; and / or a sealing gasket abutting against the first sensing surface is provided in the first air intake hole; and / or a waterproof and breathable membrane opposite to the second air intake hole is formed inside the housing; and / or the connector pipe body is a straight pipe or a bent pipe; and / or the connector pipe body has a first connector suitable for communicating with the crankcase and a second connector suitable for communicating with the ventilation pipe. The air intake channel can guide the airflow within the internal flow channel, allowing it to flow conveniently to the pressure sensing element. The sealing gasket improves the sealing between the pipe wall and the pressure sensing element, preventing airflow leakage at the connection point and thus affecting measurement accuracy. The waterproof and breathable membrane not only ensures that airflow from the external environment smoothly enters the housing but also effectively prevents water vapor, dust, and other foreign matter from entering the housing and affecting measurement accuracy. The inclusion of straight and bent pipes allows for a variety of pipe types in the joint body, catering to the needs of differentiated product designs. The first and second connectors facilitate easy connection to the crankcase and ventilation ducts, simplifying installation.

[0016] In a second aspect, the present invention provides an engine. The engine includes at least one crankcase ventilation pipe joint according to any of the preceding claims.

[0017] In a third aspect, the present invention provides a vehicle. The vehicle includes the engine described above. Attached Figure Description

[0018] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of the first embodiment of the crankcase ventilation pipe joint of this utility model;

[0020] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the first embodiment of the crankcase ventilation pipe joint of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the connector pipe body in the first embodiment of the crankcase ventilation pipe connector of this utility model;

[0022] Figure 4 This is a front structural schematic diagram of the pressure sensor in the first embodiment of the crankcase ventilation pipe connector of this utility model;

[0023] Figure 5 This is a schematic diagram of the back structure of the pressure sensor in the first embodiment of the crankcase ventilation pipe connector of this utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the pressure sensor in the first embodiment of the crankcase ventilation pipe connector of this utility model;

[0025] Figure 7 This is a schematic diagram of the second embodiment of the crankcase ventilation pipe connector of this utility model;

[0026] Figure 8 This is a structural schematic diagram of the third embodiment of the crankcase ventilation pipe connector of this utility model.

[0027] Figure label:

[0028] 100. Crankcase ventilation pipe connector; 110. Connector pipe body; 111. First connector; 112. Second connector; 113. Pipe wall; 114. Internal flow channel; 115. First air inlet; 116. Air inlet channel; 117. Snap-fit ​​protrusion; 1171. Snap-fit ​​hole; 118. Annular limiting groove; 120. Pressure sensor; 121. Housing; 1211. Receiving cavity; 1212. Second air inlet; 1213. Snap-fit ​​claw; 1214. Annular limiting protrusion; 122. Waterproof and breathable membrane; 123. Control board; 124. Pressure sensing element; 1241. First sensing surface; 1242. Second sensing surface; 125. Pin; 126. Communication interface; 127. Sealing gasket. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0031] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] To address the technical problem of pressure sensors in existing technologies being unable to accurately measure the air pressure inside ventilation ducts, this utility model provides a crankcase ventilation duct connector 100. The crankcase ventilation duct connector 100 includes: a connector body 110, with an internal flow channel 114 formed inside the connector body 110, suitable for connecting to the crankcase and the ventilation duct respectively, and a first air inlet 115 formed in fluid communication with the internal flow channel 114 on the pipe wall 113 of the connector body 110; and a pressure sensor 120, which is arranged on the pipe wall 113 and includes a housing 121 and a pressure sensing element 124 arranged inside the housing 121, and a second air inlet 1212 formed in fluid communication with the external environment on the housing 121. The pressure sensing element 124 has a first sensing surface 1241 opposite to the first air inlet 115 and a second sensing surface 1242 opposite to the second air inlet 1212.

[0033] Figure 1 This is a schematic diagram of the first embodiment of the crankcase ventilation pipe connector of this utility model. Figure 1 As shown, in one or more embodiments, the crankcase ventilation pipe connector 100 of this utility model includes a connector pipe body 110 and a pressure sensor 120 arranged on the connector pipe body 110. In one or more embodiments, the connector pipe body 110 is a straight pipe. That is, the connector pipe body 110 has a generally "I"-shaped form. In one or more embodiments, the connector pipe body 110 has a first connector 111 and a second connector 112 opposite to each other, wherein the first connector 111 can be connected to the crankcase, and the second connector 112 can be connected to the ventilation pipe. Based on Figure 1 As shown, the first connector 111 is located on the left side of the connector body 110, while the second connector 112 is located on the right side of the connector body 110. Preferably, the first connector 111, the second connector 112, and the pipe wall 113 are integrally molded using a suitable resin material through injection molding, such as PA66-GF30. It should be noted that the pipe diameters of the first connector 111 and the second connector 112 can be adjusted according to actual needs to match different models of crankcases and ventilation pipes.

[0034] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the first embodiment of the crankcase ventilation pipe joint of this utility model. Figure 2As shown, in one or more embodiments, a hollow internal flow channel 114 is formed inside the connector tube body 110, allowing the crankcase and ventilation pipe to be fluidly connected through the internal flow channel 114 in the assembled state. A first air inlet 115 is formed on the tube wall 113 of the connector tube body 110, which is in fluid communication with the internal flow channel 114, allowing airflow in the internal flow channel 114 to flow to the pressure sensor 120 through the first air inlet 115. In one or more embodiments, the first air inlet 115 has a generally circular shape. Alternatively, the first air inlet 115 may also be elliptical, square, or other suitable shapes. In one or more embodiments, an air intake channel 116 is also provided on the tube wall 113, which is in fluid communication with the first air inlet 115, allowing airflow in the internal flow channel 114 to be smoothly guided to the first air inlet 115 along the air intake channel 116. Preferably, the diameter of the air intake channel 116 is smaller than the diameter of the first air intake hole 115, so that the airflow in the internal flow channel 114 can flow smoothly to the first air intake hole 115 without obstruction, thus avoiding affecting the measurement results of the pressure sensor 120.

[0035] Figure 3 This is a schematic diagram of the connector pipe body in the first embodiment of the crankcase ventilation pipe connector of this utility model. Figure 3 As shown, in one or more embodiments, four spaced-apart snap-fit ​​protrusions 117 are formed on the wall 113 of the connector tube 110. Based on Figure 3 As shown, each snap-fit ​​protrusion 117 extends vertically upward from the pipe wall 113. These four snap-fit ​​protrusions 117 are positioned at the four corners of the rectangle. Each snap-fit ​​protrusion 117 has a roughly rectangular snap-fit ​​hole 1171, and each snap-fit ​​hole 1171 can engage with a corresponding snap-fit ​​claw 1213 on the pressure sensor 120. Alternatively, the snap-fit ​​protrusions 117 can be set to a different suitable number than four, such as three or five. The arrangement of the multiple snap-fit ​​protrusions 117 can also be adjusted according to actual needs, as long as the pressure sensor 120 can be stably and reliably fixed. Furthermore, the shape of the snap-fit ​​hole 1171 can be circular, elliptical, or other suitable shapes.

[0036] like Figure 3 As shown, in one or more embodiments, a generally rectangular annular limiting groove 118 is also provided on the pipe wall 113 of the connector tube 110 to allow the corresponding annular limiting protrusion 1214 on the pressure sensor 120 to be inserted therein, thereby improving the connection stability and positioning accuracy between the connector tube 110 and the pressure sensor 120. Alternatively, the annular limiting groove 118 can also be set in a circular, elliptical or other suitable shape, as long as it can match the corresponding annular limiting protrusion 1214.

[0037] Figure 4 This is a front structural schematic diagram of the pressure sensor 120 in the first embodiment of the crankcase ventilation pipe connector of this utility model; Figure 5 This is a schematic diagram of the back structure of the pressure sensor in the first embodiment of the crankcase ventilation pipe connector of this utility model; Figure 6 This is a schematic diagram of the internal structure of the pressure sensor in the first embodiment of the crankcase ventilation pipe connector of this utility model. Figure 2 , Figures 4-6 As shown, in one or more embodiments, the pressure sensor 120 includes a housing 121 and a pressure sensing element 124 disposed within the housing 121. Preferably, the pressure sensor 120 is detachably disposed on the pipe wall 113 of the connector pipe body 110 to facilitate the installation, disassembly, maintenance, and replacement of the pressure sensor 120, thereby reducing maintenance costs, improving maintenance efficiency, and also facilitating modular design to meet the pipe type requirements of different specifications of crankcase ventilation pipe connectors 100.

[0038] like Figure 4 and Figure 5 As shown, in one or more embodiments, the housing 121 has a generally rectangular shape. Alternatively, the housing 121 may also be circular, elliptical, or other suitable shapes. In the assembled state, the housing 121 and the tube wall 113 together form a receiving cavity 1211 for accommodating components such as the pressure sensor 124. In one or more embodiments, on the front and rear sides of the housing 121 (based on...) Figure 4 (As shown in the diagram) two locking claws 1213 are provided on each of the four locations (a total of four locking claws 1213). Each locking claw 1213 can engage with the corresponding locking hole 1171 on the connector body 110 to form a locking fit. Alternatively, the locking claws 1213 can be provided in other suitable numbers, such as three or five. The arrangement of the multiple locking claws 1213 can also be adjusted according to actual needs.

[0039] like Figure 5As shown, in one or more embodiments, a generally rectangular annular limiting protrusion 1214 is formed at the bottom of the housing 121. In the assembled state, the annular limiting protrusion 1214 can be inserted into the annular limiting groove 118 of the connector tube 110, thereby further enhancing the stability and positioning accuracy of the connection between the pressure sensor 120 and the connector tube 110, preventing the pressure sensor 120 from shaking or shifting during use. Alternatively, the annular limiting protrusion 1214 can also be circular, elliptical, or other suitable shapes, as long as it can match the annular limiting groove 118. In one or more embodiments, the annular limiting protrusion 1214 and the annular limiting groove 118 form a sealed connection using sealant (not shown in the figure), thereby effectively preventing gas leakage and ensuring the accuracy of the pressure sensor 120's measurement data.

[0040] like Figure 2 and Figure 4 As shown, in one or more embodiments, three spaced-apart second air inlets 1212 are provided on the top of the housing 121. Airflow from the external environment can smoothly enter the interior of the housing 121 through these three second air inlets 1212 to act on the pressure sensor 124. It should be noted that the number, shape, and size of the second air inlets 1212 can be adjusted according to actual needs, and will not be elaborated further here.

[0041] like Figure 2 As shown, in one or more embodiments, a waterproof and breathable membrane 122 opposite to the second air inlet 1212 is also formed inside the housing 121, so that the airflow of the external environment can smoothly enter the interior of the housing 121 through the second air inlet 1212 and the waterproof and breathable membrane 122 in sequence, and water vapor, dust and other impurities in the external environment can be effectively blocked by the waterproof and breathable membrane 122 to prevent impurities from entering the housing 121 and affecting the measurement accuracy of the pressure sensing element 124.

[0042] like Figure 2 As shown, in one or more embodiments, the pressure sensor 124 has a first sensing surface 1241 and a second sensing surface 1242 that are opposite to each other. Based on Figure 2As shown, the first sensing surface 1241 is the lower surface of the pressure sensor 124, and the second sensing surface 1242 is the upper surface of the pressure sensor 124. In the assembled state, the first sensing surface 1241 faces the first air inlet 115 on the connector tube 110, while the second sensing surface 1242 faces the second air inlet 1212 on the housing 121. Through this arrangement, the airflow within the internal flow channel 114 can directly act on the first sensing surface 1241 through the first air inlet 115, while the airflow from the external environment can directly act on the second sensing surface 1242 through the second air inlet 1212. This allows for accurate acquisition of the pressure difference, avoids measurement errors caused by pressure loss, and improves the measurement accuracy of the pressure sensor 120, thereby providing data support for monitoring the pressure status of the crankcase ventilation system. The pressure sensor 124 can be made of, but is not limited to, metal, silicon, ceramic, etc.

[0043] like Figure 2 and Figure 5 As shown, in one or more embodiments, the pressure sensor 120 further includes a sealing gasket 127 abutting against the pressure sensing element 124. Specifically, in the assembled state, the sealing gasket 127 is disposed in the first air inlet 115 of the pipe wall 113, and the top surface of the sealing gasket 127 abuts against the first sensing surface 1241 of the pressure sensing element 124, thereby improving the sealing performance between the pipe wall 113 and the pressure sensing element 124, ensuring that the airflow in the internal flow channel 114 can effectively act on the first sensing surface 1241 without leaking out from the gap between the pipe wall 113 and the pressure sensing element 124. The material of the sealing gasket 127 includes, but is not limited to, rubber. Preferably, the diameter of the sealing gasket 127 is greater than or equal to the diameter of the air inlet channel 116, so that the airflow in the internal flow channel 114 can flow smoothly to the first sensing surface 1241 without obstruction.

[0044] like Figure 2 , Figure 5 and Figure 6 As shown, in one or more embodiments, the pressure sensor 120 further includes a control board 123 disposed within the housing 121, wherein the pressure sensing element 124 is disposed on the control board 123. The connection method between the control board 123 and the housing 121 is not limited, such as snap-fit, adhesive, screw connection, etc.

[0045] like Figure 2 , Figure 5 and Figure 6 As shown, in one or more embodiments, the pressure sensor 120 further includes pins 125 connected to the control board 123 to form a communication connection with the pressure sensing element 124 on the control board 123. The pins 125 can be made of suitable metals such as copper or aluminum. The number of pins 125 can be adjusted according to actual needs, for example, three pins.

[0046] like Figure 1 and Figure 2 As shown, in one or more embodiments, the pressure sensor 120 further includes a communication interface 126 connected to the housing 121. Based on Figure 2 As shown, the communication interface 126 is located on the right side of the housing 121. Preferably, the housing 121 and the communication interface 126 are integrally molded from a suitable resin material using an injection molding process. In the assembled state, the pin 125 extends from the control board 123 to the communication interface 126 to form a communication connection with an external device. In one or more embodiments, the insertion direction of the communication interface 126 is parallel to the extension direction of the connector tube 110. Specifically, based on... Figure 2 As shown, the communication interface 126 can be plugged into a suitable external device in a roughly left-right direction, and the connector tube 110 also extends in a roughly left-right direction. Therefore, the plugging direction of the communication interface 126 and the extending direction of the connector tube 110 are parallel to each other.

[0047] Figure 7 This is a schematic diagram of the second embodiment of the crankcase ventilation pipe connector of this utility model. Figure 7 As shown, in one or more embodiments, the crankcase ventilation pipe connector 100 of this utility model includes a connector body 110 and a pressure sensor 120 arranged on the connector body 110. The connector body 110 is a straight pipe. In one or more embodiments, the insertion direction of the communication interface 126 on the pressure sensor 120 is perpendicular to the extension direction of the connector body 110. Based on... Figure 7 As shown, the communication interface 126 is plugged into a suitable external device along a generally front-to-back direction, while the connector tube 110 extends generally along a left-to-right direction.

[0048] It should be noted that the parts not mentioned in the second embodiment can be configured the same as in the first embodiment, and will not be repeated here.

[0049] Figure 8 This is a structural schematic diagram of the third embodiment of the crankcase ventilation pipe connector of this utility model. (See diagram below.) Figure 8As shown, in one or more embodiments, the crankcase ventilation pipe connector 100 of this utility model includes a connector pipe body 110 and a pressure sensor 120 arranged on the connector pipe body 110. The connector pipe body 110 is a bent pipe. Specifically, the connector pipe body 110 is a generally L-shaped bent pipe. Alternatively, the connector pipe body 110 can also be configured as a bent pipe of other suitable shapes, such as a Z-shaped bent pipe, an arc-shaped bent pipe, etc. In one or more embodiments, the insertion direction of the communication interface 126 on the pressure sensor 120 is parallel to the extension direction of a portion of the connector pipe body 110 (e.g., the first connector 111), and perpendicular to the extension direction of another portion of the connector pipe body 110 (e.g., the second connector 112). Based on Figure 7 As shown, the communication interface 126 is plugged into a suitable external device in a roughly left-right direction, while the first connector 111 of the connector tube 110 extends roughly in a left-right direction, and the second connector 112 of the connector tube 110 extends roughly in a front-back direction.

[0050] It should be noted that the parts not mentioned in the third embodiment can be configured the same as in the first embodiment, and will not be repeated here.

[0051] In one or more embodiments, the present invention provides an engine (not shown in the figures). The engine includes at least one crankcase ventilation pipe joint 100 according to any of the above embodiments.

[0052] In one or more embodiments, the present invention provides a vehicle (not shown in the figures). The vehicle includes an engine according to any of the embodiments described above.

[0053] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A crankcase ventilation pipe connector (100), characterized in that, The crankcase ventilation pipe connector (100) includes: The connector pipe body (110) has an internal flow channel (114) formed inside, suitable for connection to the crankcase and the ventilation pipe respectively, and a first air inlet (115) is formed on the pipe wall (113) of the connector pipe body (110) to form fluid communication with the internal flow channel (114); and The pressure sensor (120) is arranged on the pipe wall (113), and includes a housing (121) and a pressure sensing element (124) arranged in the housing (121). A second air inlet (1212) is provided on the housing (121) to form fluid communication with the external environment. The pressure sensor (124) has a first sensing surface (1241) opposite to the first air inlet (115) and a second sensing surface (1242) opposite to the second air inlet (1212).

2. The crankcase ventilation pipe joint (100) according to claim 1, characterized in that, The pressure sensor (120) is detachably mounted on the pipe wall (113).

3. The crankcase ventilation pipe joint (100) according to claim 2, characterized in that, A plurality of snap-fit ​​protrusions (117) spaced apart from each other are formed on the tube wall (113), and a snap-fit ​​hole (1171) is provided on each snap-fit ​​protrusion (117), and a snap-fit ​​claw (1213) that can snap into the corresponding snap-fit ​​hole (1171) is formed on the housing (121).

4. The crankcase ventilation pipe joint (100) according to claim 2 or 3, characterized in that, An annular limiting groove (118) is formed on the pipe wall (113), and an annular limiting protrusion (1214) that can be inserted into the annular limiting groove (118) is formed on the housing (121).

5. The crankcase ventilation pipe joint (100) according to claim 4, characterized in that, The annular limiting protrusion (1214) and the annular limiting groove (118) are connected by a sealant.

6. The crankcase ventilation pipe joint (100) according to claim 1, characterized in that, The pressure sensor (120) also includes a control board (123) arranged in the housing (121), a communication interface (126) connected to the housing (121), and pins (125) extending from the control board (123) to the communication interface (126). The pressure sensor (124) is arranged on the control board (123) and forms a communication connection with the pin (125).

7. The crankcase ventilation pipe joint (100) according to claim 6, characterized in that, The insertion direction of the communication interface (126) is parallel or perpendicular to the extension direction of at least a portion of the connector tube (110).

8. The crankcase ventilation pipe joint (100) according to claim 1, characterized in that, An air intake channel (116) communicating with the first air intake hole (115) is formed on the pipe wall (113), wherein the diameter of the air intake channel (116) is smaller than the diameter of the first air intake hole (115); and / or A sealing gasket (127) is provided in the first air inlet (115) to abut against the first sensing surface (1241); and / or A waterproof and breathable membrane (122) is formed inside the housing (121) opposite to the second air inlet (1212); and / or The connector pipe body (110) is a straight pipe or a bent pipe; and / or The connector tube body (110) has a first connector (111) adapted to communicate with the crankcase and a second connector (112) adapted to communicate with the ventilation tube.

9. An engine, characterized in that, The engine includes at least one crankcase ventilation pipe joint (100) according to any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the engine according to claim 9.

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