Automobile power system intake pressure sensor

Abstract

The application relates to the technical field of intake pressure sensors, and discloses an intake pressure sensor for an automobile power system, which comprises an intake pressure sensor body, a line interface for connecting a line is arranged on one side of the intake pressure sensor body, and a mounting mechanism is arranged on the surface of the intake pressure sensor body. After the intake pressure sensor body is mounted at a reserved position on the surface of an intake manifold through the mounting mechanism, the mounting mechanism can extrude a primary extrusion assembly, so that a gas supply assembly can preliminarily supply gas to a sealing expansion device, the sealing expansion device is tightly attached to the inner wall of the intake manifold, the leakage phenomenon is reduced, the overall sealing effect is improved, the sealing expansion device can be further expanded through a control assembly subsequently, the sealing effect is ensured, the sealing element does not need to be frequently replaced, and the intake pressure detection error phenomenon caused by sealing failure is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of intake pressure sensor technology, specifically to an intake pressure sensor for an automotive powertrain system. Background Technology

[0002] The automotive powertrain is the core assembly that converts energy into mechanical energy to drive the vehicle. It is mainly divided into two types: traditional fuel and new energy. The traditional fuel powertrain is based on the internal combustion engine. The combustion of fuel in the cylinder drives the piston to move, and then the power is transmitted to the wheels through the crankshaft, clutch, gearbox, and driveshaft. Key components include the engine, gearbox, intake and exhaust systems, and fuel supply system.

[0003] The intake pressure sensor in an automotive powertrain is a key electronic component that monitors the pressure inside the engine's intake manifold. It is mainly used by the ECU (Engine Control Unit) to accurately calculate the air-fuel ratio and ignition timing. It is usually installed behind the intake manifold or throttle body. By sensing changes in intake pressure, it converts the pressure signal into an electrical signal and transmits it to the ECU. Under different operating conditions, such as acceleration and idling, the intake pressure will fluctuate. The sensor can capture these changes in real time, allowing the ECU to adjust the fuel injection quantity and ignition advance angle accordingly, thereby optimizing engine power output, reducing fuel consumption, and reducing exhaust emissions.

[0004] In existing technologies, when assembling automotive powertrain intake pressure sensors, they are typically fixed to a preset position in the intake manifold with bolts. Simultaneously, the sensor's detection end needs to extend into the manifold. To prevent airflow leakage from affecting measurement accuracy, a sealing ring is used to seal the gap between the sensor and the manifold inner wall. However, during long-term use, factors such as high temperatures, vibrations, and oil vapor corrosion during engine operation can cause the sealing ring to age, deform, or suffer physical damage. This prevents it from maintaining a tight seal against the intake manifold inner wall, thus damaging the original sealing structure. Reduced sealing performance allows outside air to seep in or abnormal airflow leakage from the manifold, interfering with the sensor's accurate capture of the actual pressure inside the manifold. Ultimately, this affects the ECU's precise control of the air-fuel ratio and ignition timing, leading to measurement data deviations.

[0005] Therefore, we propose an intake pressure sensor for automotive powertrain systems. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an intake pressure sensor for automotive power systems, which solves the problem that the sealing ring is prone to aging, deformation, or physical damage, causing it to fail to maintain a tight fit against the inner wall of the intake manifold, thereby damaging the original sealing structure and interfering with the sensor's accurate capture of the actual pressure inside the manifold.

[0007] (II) Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solution: an intake pressure sensor for an automotive power system, comprising an intake pressure sensor body, a line interface for connecting lines is provided on one side of the intake pressure sensor body, an installation mechanism is provided on the surface of the intake pressure sensor body for installing the intake pressure sensor body at a preset position in the intake manifold, and a sealing mechanism is provided on the surface of the intake pressure sensor body for sealing with the inner wall of the intake manifold. The sealing mechanism includes a sealing expansion device fitted onto the intake pressure sensor body for contact with the inner wall of the intake manifold. An expansion control device is also provided on the surface of the intake pressure sensor body to control the expansion of the sealing expansion device. The expansion control device includes an air supply assembly on the intake pressure sensor body for supplying air to the sealing expansion device. The air supply assembly is equipped with a control assembly and a preliminary compression assembly. The preliminary compression assembly is used to initially compress and expand the sealing expansion device during installation by the mounting mechanism. The control assembly controls the continued expansion of the sealing expansion device. Through these components, after the intake pressure sensor body is installed at a pre-reserved position on the surface of the intake manifold by the mounting mechanism, the mounting mechanism can compress the preliminary compression assembly, thereby allowing the air supply assembly to initially supply air to the sealing expansion device, ensuring a tight fit between the sealing expansion device and the inner wall of the intake manifold, reducing leakage, and improving the overall sealing effect. Furthermore, the control assembly can further control the expansion of the sealing expansion device to ensure the sealing effect.

[0008] Preferably, the sealing expansion device includes a mounting sleeve that is installed on the pressure sensor body by screws. Two sets of expansion pads are fixedly connected to the surface of the mounting sleeve. The expansion pads seal the mounting sleeve and form a cavity between the expansion pads and the inner wall of the mounting sleeve. After the gas supply assembly inputs gas into the cavity inside the mounting sleeve through the above components, the expansion pads can expand rapidly and fit against the inner wall of the intake manifold to achieve a sealing effect.

[0009] Preferably, the outer surface of the mounting sleeve is fixedly connected with a sealing gasket, and there are three sealing gaskets. Two expansion gaskets are located between the three sealing gaskets to form an intermittent arrangement. Through the above components, after the mounting sleeve is inserted into the inner wall of the intake manifold, the three sealing gaskets can fit against the inner wall of the intake manifold to perform auxiliary sealing. Together with the expansion gaskets, a multi-layer sealing structure is formed.

[0010] Preferably, the gas supply assembly includes a tube body installed in the inner wall of the pressure sensor body by screws. A detachable connecting pipe is provided between the tube body and the mounting sleeve. The connecting pipe is connected to the inner wall of the tube body and the mounting sleeve. A piston ring is slidably connected to the inner wall of the tube body. A return spring is fixedly connected to the piston ring on the side corresponding to the inner wall of the tube body. Through the above components, when the initial compression assembly or the control assembly compresses the piston ring, the piston ring can move in the inner wall of the tube body and compress the gas in the tube body, inputting the gas into the mounting sleeve to expand the expansion pad. The connecting pipe can be connected to the tube body and the mounting sleeve by a threaded connection.

[0011] Preferably, the mounting mechanism includes two bolts inserted into the intake pressure sensor body. The bolts are threaded to the intake manifold pre-drilled holes. A pressure head is fixedly connected to the upper end of the bolts. Two limiting blocks are slidably connected to the inner wall of the pressure head. A return spring is fixedly connected to the side of the limiting blocks corresponding to the inner wall of the pressure head. Two fixing rings are fixedly connected to the surface of the intake pressure sensor body. Multiple limiting holes are opened on the surface of the fixing rings for the limiting blocks to be inserted. A control unit is provided above the pressure head for controlling the movement of the limiting blocks and the rotation of the screw. Through the above components, during use, the control unit can control the limiting blocks to move back into the pressure head and simultaneously control the bolt to rotate. After the bolt installs the intake pressure sensor body into the intake manifold, the control unit is released, and the return spring drives the limiting blocks to reset and insert into the limiting holes on the surface of the fixing rings to achieve limiting and ensure stability after installation. At the same time, when the bolt drives the pressure head to move downward, it can squeeze the initial squeezing component.

[0012] Preferably, the control unit includes a control head that is slidably connected to the inner wall of the pressure head. A pressing rod is fixedly connected to the lower surface of the control head. A through hole is opened on the surface of the limiting block, and a pressing block is fixedly connected to the inner wall of the through hole. A cross groove is opened on the surface of the control head. Through the above components, a tool can be inserted into the cross groove on the surface of the control head and the control head can be pushed down. The pressing rod presses the pressing block, causing the limiting block to retract into the pressure head. At the same time, when the control head is rotated, the bolt can be rotated.

[0013] Preferably, a second return spring is fixedly connected to the side of the control head corresponding to the inner wall of the pressure head. Through the above-mentioned components, the second return spring can drive the extrusion rod and the control head to reset.

[0014] Preferably, the preliminary extrusion assembly includes a push rod that is slidably connected to the inner wall of the tube. The push rod is L-shaped, and the surface of the fixing ring has a groove for the push rod to be inserted. Through the above components, the pressure head can extrude the push rod as it moves downward with the bolt connection. The push rod can extrude the piston ring to deliver gas until the push rod is pushed into the groove, thus completing the preliminary expansion operation.

[0015] Preferably, the control component includes an adjusting screw threaded to the inner wall of the tube. One end of the adjusting screw is fixedly connected to a push ring. A slot is provided on the surface of the tube for the adjusting screw to be inserted. With the above components, when the expansion gasket is not sealed properly, the adjusting screw can be rotated. The adjusting screw can drive the push ring to further push the piston ring to move, further compressing the air in the tube and allowing the expansion gasket to continue to expand, thereby improving the sealing effect.

[0016] Preferably, both the expansion pad and the sealing pad are made of rubber.

[0017] In summary, the technical effects and advantages of this invention are as follows: 1. In this invention, after the intake pressure sensor body is installed in the reserved position on the surface of the intake manifold by the installation mechanism, the installation mechanism can squeeze the initial squeezing component, thereby allowing the air supply component to initially supply air to the sealing expansion device, so that the sealing expansion device fits tightly against the inner wall of the intake manifold, reducing leakage and improving the overall sealing effect. At the same time, the sealing expansion device can be further controlled to expand by the control component to ensure the sealing effect. There is no need to frequently replace the seals, which greatly reduces the intake pressure detection error caused by seal failure.

[0018] 2. In this invention, the sealing expansion device uses three rubber sealing gaskets and two rubber expansion gaskets arranged at intervals in the mounting sleeve to form multiple interceptions on the sealing surface, thereby improving the overall sealing effect.

[0019] 3. In this invention, by setting up an installation mechanism, during the control bolt connection process, the control unit can be pushed to allow the limit block to retract into the pressure head. Subsequently, the control unit drives the bolt to rotate and assemble with the pre-reserved screw hole of the intake manifold. After assembly, the pressure head can fit against the upper surface of the fixed ring. At this time, the control unit is reset, and the reset spring can drive the limit block to insert into the corresponding limit hole on the surface of the fixed ring, forming a mechanical positioning, ensuring the stability effect after installation, reducing the problem of bolt loosening affecting normal detection and sealing after installation, and improving the overall stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an intake pressure sensor for an automotive powertrain according to the present invention. Figure 2 This is a side view schematic diagram of the intake pressure sensor for an automotive powertrain according to the present invention. Figure 3 This invention relates to an intake pressure sensor for an automotive powertrain system. Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4This is a bottom view schematic diagram of the intake pressure sensor for an automotive power system according to the present invention; Figure 5 This is a schematic diagram of the sealing expansion device structure of an intake pressure sensor for an automotive power system according to the present invention. Figure 6 This is a schematic diagram of the sealing expansion device of an intake pressure sensor for an automotive power system according to the present invention. Figure 7 This is a cross-sectional schematic diagram of the sealing expansion device for an intake pressure sensor in an automotive power system according to the present invention. Figure 8 This is a cross-sectional structural schematic diagram of an expansion control device for an intake pressure sensor in an automotive powertrain according to the present invention. Figure 9 This is a partial cross-sectional view of the mounting mechanism for an intake pressure sensor in an automotive powertrain, according to the present invention.

[0021] In the diagram: 1. Pressure sensor body; 2. Line interface; 3. Mounting mechanism; 31. Fixing ring; 32. Bolt; 33. Pressure head; 34. Control head; 35. Extrusion rod; 36. Limiting block; 37. Extrusion block; 38. Return spring one; 39. Return spring two; 310. Limiting hole; 4. Sealing mechanism; 41. Sealing expansion device; 411. Mounting sleeve; 412. Sealing gasket; 413. Expansion gasket; 414. Cavity; 42. Air supply assembly; 421. Connecting pipe; 422. Pipe body; 423. Piston ring; 424. Return spring three; 43. Control assembly; 431. Adjusting screw; 432. Push ring; 433. Slot; 44. Preliminary extrusion assembly; 441. Push rod; 442. Groove. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] refer to Figure 1 - Figure 9 The invention relates to an intake pressure sensor for an automotive powertrain, comprising an intake pressure sensor body 1, a wiring interface 2 for connecting wiring on one side of the intake pressure sensor body 1, a mounting mechanism 3 for mounting the intake pressure sensor body 1 at a preset position in the intake manifold, and a sealing mechanism 4 for sealing with the inner wall of the intake manifold.

[0024] The sealing mechanism 4 includes a sealing expansion device 41 sleeved on the intake pressure sensor body 1 for fitting against the inner wall of the intake manifold. An expansion control device is also provided on the surface of the intake pressure sensor body 1 for controlling the expansion of the sealing expansion device 41. The expansion control device includes an air supply component 42 provided on the intake pressure sensor body 1 for supplying air to the sealing expansion device 41. The air supply component 42 is provided with a control component 43 and a preliminary compression component 44. The preliminary compression component 44 is used to initially compress the sealing expansion device 41 to expand and seal when the mounting mechanism 3 is installed. The control component 43 is used to control the sealing expansion device 41 to continue to expand.

[0025] In this implementation scheme: After the intake pressure sensor body 1 is installed on the reserved position on the surface of the intake manifold by the installation mechanism 3, the installation mechanism 3 can squeeze the preliminary squeezing component 44, so that the air supply component 42 initially supplies air to the sealing expansion device 41, so that the sealing expansion device 41 fits tightly against the inner wall of the intake manifold, reducing leakage and improving the overall sealing effect. At the same time, the sealing expansion device 41 can be further controlled to expand by the control component 43 to ensure the sealing effect. There is no need to frequently replace the seals, which greatly reduces the intake pressure detection error caused by seal failure.

[0026] The sealing expansion device 41 includes a mounting sleeve 411 that is installed on the pressure sensor body 1 by screws. Two sets of expansion pads 413 are fixedly connected to the surface of the mounting sleeve 411. The expansion pads 413 seal the mounting sleeve 411 and form a cavity 414 between the expansion pads 413 and the inner wall of the mounting sleeve 411. A sealing pad 412 is fixedly connected to the outer surface of the mounting sleeve 411. There are three sealing pads 412. Two expansion pads 413 are located between the three sealing pads 412, forming an intermittent arrangement. Both the expansion pads 413 and the sealing pads 412 are made of rubber.

[0027] In this embodiment: after the mounting sleeve 411 is inserted into the inner wall of the intake manifold, the three sealing gaskets 412 can fit against the inner wall of the intake manifold for auxiliary sealing. After the air supply assembly 42 introduces gas into the cavity 414 inside the mounting sleeve 411, the expansion gasket 413 can expand rapidly and fit against the inner wall of the intake manifold to form a multi-layer sealing structure.

[0028] The gas supply assembly 42 includes a tube 422 installed in the inner wall of the pressure sensor body 1 by screws. A detachable connecting tube 421 is provided between the tube 422 and the mounting sleeve 411. The connecting tube 421 is connected to the inner wall of the tube 422 and the mounting sleeve 411. A piston ring 423 is slidably connected to the inner wall of the tube 422. A return spring 424 is fixedly connected to the side of the piston ring 423 corresponding to the inner wall of the tube 422.

[0029] In this embodiment: when the initial extrusion assembly 44 or the control assembly 43 extrudes the piston ring 423, the piston ring 423 can move within the inner wall of the tube body 422 and compress the gas inside the tube body 422, inputting the gas into the mounting sleeve 411 to cause the expansion pad 413 to expand. The connecting pipe 421 can be connected to the tube body 422 and the mounting sleeve 411 by means of a threaded connection.

[0030] The mounting mechanism 3 includes two bolts 32 inserted into the intake pressure sensor body 1. The bolts 32 are used for threaded connection with the reserved holes of the intake manifold. A pressure head 33 is fixedly connected to the upper end of the bolts 32. Two limit blocks 36 are slidably connected to the inner wall of the pressure head 33. A return spring 38 is fixedly connected to the side of the limit block 36 corresponding to the inner wall of the pressure head 33. Two fixing rings 31 are fixedly connected to the surface of the intake pressure sensor body 1. Multiple limit holes 310 are opened on the surface of the fixing rings 31 for the limit blocks 36 to be inserted. A control unit is provided above the pressure head 33 for controlling the movement of the limit blocks 36 and the rotation of the screw.

[0031] In this implementation scheme: During use, the limit block 36 can be moved and retracted into the pressure head 33 by the control unit, and the bolt 32 can be rotated at the same time. After the bolt 32 installs the intake pressure sensor body 1 into the intake manifold, the control unit is released, and the reset spring 38 drives the limit block 36 to reset and insert into the limit hole 310 on the surface of the fixing ring 31 to achieve the limit and ensure the stability after installation. At the same time, when the bolt 32 drives the pressure head 33 to move downward, it can squeeze the preliminary compression component 44.

[0032] The control unit includes a control head 34 that is slidably connected to the inner wall of the pressure head 33. A pressing rod 35 is fixedly connected to the lower surface of the control head 34. A through hole is opened on the surface of the limiting block 36. A pressing block 37 is fixedly connected to the inner wall of the through hole. A cross groove is opened on the surface of the control head 34. A return spring 39 is fixedly connected to the side of the control head 34 corresponding to the inner wall of the pressure head 33.

[0033] In this embodiment: the tool can be inserted into the cross groove on the surface of the control head 34 and the control head 34 can be pushed down. The extrusion rod 35 extrudes the extrusion block 37, which drives the limit block 36 to retract into the pressure head 33. At the same time, when the control head 34 is rotated, the bolt 32 can be rotated. The second reset spring 39 can drive the extrusion rod 35 and the control head 34 to reset.

[0034] The preliminary extrusion assembly 44 includes a push rod 441 that is slidably connected to the inner wall of the tube 422. The push rod 441 is L-shaped, and the surface of the fixing ring 31 has a groove 442 for the push rod 441 to be inserted.

[0035] In this embodiment: When the pressure head 33 moves downward with the bolt 32 connection, it can squeeze the push rod 441, which can squeeze the piston ring 423 to realize air delivery until the push rod 441 is pushed into the groove 442, thus completing the initial expansion operation.

[0036] The control component 43 includes an adjusting screw 431 that is threadedly connected to the inner wall of the tube body 422. One end of the adjusting screw 431 is fixedly connected to a push ring 432. A slot 433 is provided on the surface of the tube body 422 for the adjusting screw 431 to be inserted.

[0037] In this implementation scheme: when the expansion pad 413 is not sealed properly, the adjusting screw 431 can be rotated. The adjusting screw 431 can drive the push ring 432 to further push the piston ring 423 to move, further compressing the air in the tube 422, allowing the expansion pad 413 to continue to expand and improve the sealing effect.

[0038] Working principle of this invention: When assembling the intake pressure sensor body 1 with the reserved position on the intake manifold, the detection end of the intake pressure sensor body 1 can be inserted into the inner wall of the intake manifold. At this time, the mounting sleeve 411 drives the sealing gasket 412 and expansion gasket 413 to be inserted into the inner wall of the intake manifold and fit against the inner wall. Then, the bolt 32 is inserted into the intake pressure sensor body 1 and aligned with the reserved screw hole position on the surface of the intake manifold. The tool is inserted into the cross groove on the surface of the control head 34 and the control head 34 is pushed down. The second return spring 39 is stressed, the extrusion rod 35 extrudes the extrusion block 37, and drives the limit block 36 to retract into the pressure head 33. The first return spring 38 is stressed. At the same time, when the control head 34 is rotated, the bolt 32 can be rotated. The bolt 32 and the reserved screw hole on the surface of the intake manifold are aligned. During the movement of the bolt 32, the pressure head 33 can be moved. After the pressure head 33 moves to a certain position, it can squeeze the push rod 441. The push rod 441 can squeeze the piston ring 423. The return spring 3 424 is stressed, and the gas in the pipe body 422 is input into the installation sleeve 411 through the connecting pipe 421, causing the expansion pad 413 to expand and fit tightly against the inner wall of the intake manifold. When the pressure head 33 contacts the fixed ring 31, the push rod 441 is pressed into the groove 442. At this time, the control head 34 is released, and the return spring 2 39 controls the head 34 and the squeezing rod 35 to return. At the same time, the return spring 1 38 drives the limit block 36 to return. The limit block 36 can be inserted into the limit hole 310 at the corresponding position on the surface of the fixed ring 31, so as to achieve stable installation and improve the overall sealing effect. When the subsequent expansion pad 413 cannot fit tightly against the inner wall of the intake manifold, simply rotate the adjusting screw 431. The adjusting screw 431 can drive the push ring 432 to further push the piston ring 423 to move, further compressing the air in the pipe body 422, allowing the expansion pad 413 to continue to expand, thereby ensuring the fit with the inner wall of the intake manifold and improving the sealing effect.

[0039] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intake pressure sensor for an automotive powertrain, comprising an intake pressure sensor body (1), characterized in that: The intake pressure sensor body (1) is provided with a line interface (2) for connecting the line on one side. The intake pressure sensor body (1) is provided with an installation mechanism (3) for installing the intake pressure sensor body (1) at a preset position in the intake manifold. The intake pressure sensor body (1) is provided with a sealing mechanism (4) for sealing with the inner wall of the intake manifold. The sealing mechanism (4) includes a sealing expansion device (41) sleeved on the intake pressure sensor body (1) for fitting against the inner wall of the intake manifold. The surface of the intake pressure sensor body (1) is also provided with an expansion control device for controlling the expansion of the sealing expansion device (41). The expansion control device includes an air supply assembly (42) provided on the intake pressure sensor body (1) for supplying air to the sealing expansion device (41). The air supply assembly (42) is provided with a control assembly (43) and a preliminary compression assembly (44). The preliminary compression assembly (44) is used to initially compress the sealing expansion device (41) to expand and seal when the installation mechanism (3) is installed. The control assembly (43) is used to control the sealing expansion device (41) to continue to expand. The gas supply assembly (42) includes a tube (422) installed in the inner wall of the pressure sensor body (1) by screws. A detachable connecting tube (421) is provided between the tube (422) and the mounting sleeve (411). The connecting tube (421) is connected to the inner wall of the tube (422) and the mounting sleeve (411). A piston ring (423) is slidably connected to the inner wall of the tube (422). A return spring (424) is fixedly connected to the side of the piston ring (423) corresponding to the inner wall of the tube (422). The mounting mechanism (3) includes two bolts (32) inserted into the intake pressure sensor body (1). The bolts (32) are used to be threaded to the intake manifold pre-drilled hole. A pressure head (33) is fixedly connected to the upper end of the bolts (32). Two limit blocks (36) are slidably connected to the inner wall of the pressure head (33). A return spring (38) is fixedly connected to the side of the limit block (36) corresponding to the inner wall of the pressure head (33). Two fixing rings (31) are fixedly connected to the surface of the intake pressure sensor body (1). Multiple limit holes (310) are opened on the surface of the fixing rings (31) for the limit blocks (36) to be inserted. A control unit is provided above the pressure head (33) for controlling the movement of the limit blocks (36) and the rotation of the screw. The control unit includes a control head (34) that is slidably connected to the inner wall of the pressure head (33). A pressing rod (35) is fixedly connected to the lower surface of the control head (34). A through hole is opened on the surface of the limiting block (36). A pressing block (37) is fixedly connected to the inner wall of the through hole. A cross groove is opened on the surface of the control head (34). A reset spring (39) is fixedly connected to one side of the inner wall of the control head (34) corresponding to the pressure head (33). The initial extrusion assembly (44) includes a push rod (441) that is slidably connected to the inner wall of the tube (422). The push rod (441) is L-shaped, and the surface of the fixing ring (31) has a groove (442) for inserting the push rod (441).

2. The intake pressure sensor for an automotive powertrain according to claim 1, characterized in that: The sealing expansion device (41) includes a mounting sleeve (411) mounted on the pressure sensor body (1) by screws. Two sets of expansion pads (413) are fixedly connected to the surface of the mounting sleeve (411). The expansion pads (413) seal the mounting sleeve (411) and form a cavity (414) between the expansion pads (413) and the inner wall of the mounting sleeve (411).

3. The intake pressure sensor for an automotive powertrain according to claim 2, characterized in that: The outer surface of the mounting sleeve (411) is fixedly connected with a sealing gasket (412). There are three sealing gaskets (412), and two expansion gaskets (413) are located between the three sealing gaskets (412) to form an intermittent arrangement.

4. The intake pressure sensor for an automotive powertrain according to claim 1, characterized in that: The control component (43) includes an adjusting screw (431) threadedly connected to the inner wall of the tube body (422). One end of the adjusting screw (431) is fixedly connected to a push ring (432). The surface of the tube body (422) is provided with a slot (433) for the adjusting screw (431) to be inserted.

5. The intake pressure sensor for an automotive powertrain according to claim 3, characterized in that: Both the expansion pad (413) and the sealing pad (412) are made of rubber.

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