A nitrogen oxide sensor that prevents carbon deposition and blockage

Abstract

The present invention discloses a nitrogen oxygen sensor that prevents carbon deposit blockage, including a sensor body, two ends of the sensor body are respectively fixedly connected with mounting plates, the upper end of the mounting plate is fixedly installed with a monitoring joint, the upper end of the sensor body is fixedly installed with a control unit near the monitoring joint, one end of the control unit is fixedly connected with a line speed, one end of the line speed is fixedly connected with a nitrogen oxygen probe, one side of the nitrogen oxygen probe is installed with a resonance mechanism, the resonance mechanism includes a metal cover movably connected to the inside of one side of the nitrogen oxygen probe, and the outer side of the metal cover is provided with four groups of vents. The nitrogen oxygen sensor that prevents carbon deposit blockage described in the present invention effectively prevents the accumulation of carbon deposits, avoids the reduction of vehicle power, and reduces fuel consumption.

Description

Technical Field

[0001] The invention relates to the technical field of nitrogen oxygen sensors, and in particular to a nitrogen oxygen sensor that is resistant to carbon deposition and blockage. Background Art

[0002] As people's environmental awareness increases, there are stricter regulations on the exhaust gas emitted by automobiles, diesel engines and other motor vehicles, especially the content of nitrogen oxides in the exhaust gas. At present, the automobile engine after-treatment system usually uses nitrogen oxide sensors to measure the concentration of nitrogen oxides in the exhaust gas, and takes corresponding measures according to this concentration value to reduce the emission of nitrogen oxides to meet national standards. In order to improve the combustion efficiency of automobile fuel and reduce exhaust pollution, the research and development of exhaust selective catalytic reduction systems, change the automobile emission mode, and control the emission of harmful exhaust gases have become the only way, and the sensor industry for detecting the concentration of harmful gases has emerged.

[0003] Traditional nitrogen oxide sensors still have some shortcomings. The nitrogen oxide sensors on the market are easily affected by particulate matter in the exhaust gas, which forms carbon deposits and enters the interior of the nitrogen oxide sensors, causing them to become clogged. The accumulation of carbon deposits reduces the power of the vehicle and increases fuel consumption. Summary of the invention

[0004] The main purpose of the present invention is to provide a nitrogen oxide sensor that is resistant to carbon deposition and blockage, which can effectively solve the problems in the background technology.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A nitrogen oxygen sensor for preventing carbon deposition and clogging, comprising a sensor body, two ends of the sensor body are respectively fixedly connected with mounting plates, an upper end of the mounting plate is fixedly installed with a monitoring joint, a control unit is fixedly installed at a position on one side of the upper end of the sensor body close to the monitoring joint, one end of the control unit is fixedly connected with a wiring harness, one end of the wiring harness is fixedly connected with a nitrogen oxygen probe, and a resonance mechanism is installed on one side of the nitrogen oxygen probe;

[0007] The resonance mechanism includes a metal cover movably connected to the inside of one side of the nitrogen oxygen probe, four groups of ventilation holes are opened on the outside of the metal cover, a metal back cover is arranged on one side of the metal cover, a threaded ring is arranged at one end of the metal back cover near the inside of the metal cover, a conical groove is arranged inside the threaded ring, a carbon flow hole is opened near the middle position on the inner side of the threaded ring, a metal filter is fixedly connected to the inner wall of the metal cover near the other side, a metal ball is placed on the inner bottom of the metal cover, three groups of springs are fixedly connected to the inner wall of the metal cover near the front side, and a metal fixing plate is fixedly connected to the rear ends of the three groups of springs.

[0008] Preferably, one side of the metal cover is in threaded connection with the interior of the nitrogen oxygen probe, the number of each of the four groups of vent holes is three, and the four groups of vent holes are connected to the interior of the metal cover.

[0009] Preferably, the metal back cover and the threaded ring are integrated, the threaded ring is threadedly connected to the inner side of the metal cover, the conical groove is connected to the carbon flow hole, and the metal filter is located on one side of the metal fixing plate.

[0010] Preferably, the metal ball is movably placed inside the metal cover, the three groups of springs are arranged in a formation, and the metal fixing plate is located between the inner metal back cover of the metal cover and the metal filter.

[0011] Preferably, the sensor body is made of a metal high temperature resistant material, and the two groups of mounting plates are respectively located at two ends of the sensor body close to the front and rear side edges.

[0012] Preferably, the monitoring connector is installed at the upper end of the sensor body near the middle position, and the outer side of the nitrogen and oxygen probe near the metal cover is set to a threaded connection.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, a resonance mechanism is placed inside the pipe through the connection of the nitrogen oxide probe, and when the car is running and the engine vibrates, the metal ball will jump inside the metal cover and hit the metal cover and the metal filter, so that the carbon deposits accumulated on the surface of the metal cover and the metal filter when the exhaust gas flows are knocked off and slide out from the provided carbon flow holes and threaded rings, thereby effectively preventing the accumulation of carbon deposits, avoiding the reduction of vehicle power, and reducing oil consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a nitrogen oxide sensor that prevents carbon deposition and clogging according to the present invention;

[0016] Figure 2 It is a structural schematic diagram of a resonance mechanism of a nitrogen oxide sensor that prevents carbon deposition and blockage according to the present invention;

[0017] Figure 3 It is a partial cross-sectional structural schematic diagram of a resonance mechanism of a nitrogen oxygen sensor that prevents carbon deposition and blockage according to the present invention;

[0018] Figure 4 The diagram is a partial cross-sectional structural diagram of a resonance mechanism of a nitrogen oxide sensor that is resistant to carbon deposit blockage according to the present invention.

[0019] In the figure: 1. Sensor body; 2. Mounting plate; 3. Monitoring connector; 4. Control unit; 5. Wiring harness; 6. Nitrogen oxide probe; 7. Resonance mechanism; 71. Metal cover; 72. Air vent; 73. Metal back cover; 74. Threaded ring; 75. Conical groove; 76. Carbon flow hole; 77. Metal filter; 78. Metal ball; 79. Spring; 710. Metal fixing plate. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figure 1-4 As shown, a nitrogen oxygen sensor for preventing carbon deposition and clogging comprises a sensor body 1, two ends of the sensor body 1 are respectively fixedly connected with mounting plates 2, a monitoring connector 3 is fixedly installed on the upper end of the mounting plate 2, a control unit 4 is fixedly installed at a position on one side of the upper end of the sensor body 1 close to the monitoring connector 3, one end of the control unit 4 is fixedly connected with a wiring harness 5, one end of the wiring harness 5 is fixedly connected with a nitrogen oxygen probe 6, and a resonance mechanism 7 is installed on one side of the nitrogen oxygen probe 6;

[0022] The resonance mechanism 7 includes a metal cover 71 movably connected to the inside of one side of the nitrogen oxygen probe 6, four groups of ventilation holes 72 are opened on the outer side of the metal cover 71, a metal back cover 73 is arranged on one side of the metal cover 71, a threaded ring 74 is arranged at one end of the metal back cover 73 near the inside of the metal cover 71, a conical groove 75 is arranged inside the threaded ring 74, a carbon flow hole 76 is opened on the inner side of the threaded ring 74 near the middle position, a metal filter screen 77 is fixedly connected to the inner wall of the metal cover 71 near the other side, a metal ball 78 is placed on the inner bottom of the metal cover 71, three groups of springs 79 are fixedly connected to the inner wall of the metal cover 71 near the front side, and a metal fixing plate 710 is fixedly connected to the rear end of the three groups of springs 79.

[0023] In this embodiment, one side of the metal cover 71 is threadedly connected to the interior of the nitrogen oxygen probe 6, and the number of each group of four air holes 72 is three. The four air holes 72 are communicated with the interior of the metal cover 71, and the metal back cover 73 and the thread ring 74 are integrated. The thread ring 74 is threadedly connected to the inner side of the metal cover 71, and the conical groove 75 is communicated with the carbon flow hole 76. The metal filter screen 77 is located on one side of the metal fixing plate 710, and the metal ball 78 is movably placed inside the metal cover 71. The three groups of springs 79 are arranged in a formation, and the metal fixing plate 710 is located between the metal back cover 73 and the metal filter screen 77 inside the metal cover 71.

[0024] Specifically, the resonance mechanism 7 placed inside the pipe through the connection of the nitrogen oxide probe 6 will cause the metal ball 78 to jump inside the metal cover 71 and hit the metal cover 71 and the metal filter 77 when the car is running and the engine vibrates, so that the carbon deposits accumulated on the surface of the metal cover 71 and the metal filter 77 when the exhaust gas flows are knocked off and slide out from the carbon flow holes 76 and the threaded rings 74. At the same time, when the metal fixing plate 710 added inside is hit, the impact frequency of the metal ball 78 inside will be increased. At the same time, the threaded connection between the metal cover 71 and the nitrogen oxide probe 6 and the threaded connection between the metal back cover 73 and the metal cover 71 are convenient for later maintenance, replacement and reuse, which effectively prevents the accumulation of carbon deposits, avoids the reduction of vehicle power, and reduces fuel consumption.

[0025] In this embodiment, the sensor body 1 is made of metal high-temperature resistant material, and the two sets of mounting plates 2 are respectively located at both ends of the sensor body 1 near the front and rear side edges. The monitoring joint 3 is installed at the upper end of the sensor body 1 near the middle position, and the outer side of the nitrogen oxygen probe 6 near the metal cover 71 is set to a threaded connection.

[0026] Among them, the nitrogen oxygen probe 6 and the resonance mechanism 7 are inserted into the pipeline and connected through the threads on the outside of the nitrogen oxygen probe 6 to detect the internal gas, and then transmit it to the sensor body 1 through the linear speed 5 for data detection, and then transmit it to the computer end through the monitoring connector 3, so as to effectively detect whether the exhaust gas exceeds the standard, so as to remind the driver.

[0027] Moreover, through the connection of the nitrogen oxide probe 6 and the resonance mechanism 7 placed inside the pipe, when the car is running and the engine is vibrating, the metal ball 78 will jump inside the metal cover 71 and hit the metal cover 71 and the metal filter 77, so that the carbon deposits accumulated on the surface of the metal cover 71 and the metal filter 77 when the exhaust gas flows are knocked off and slide out from the provided carbon flow holes 76 and the threaded rings 74. At the same time, when the metal fixing plate 710 added inside is hit, the impact frequency of the metal ball 78 inside will be increased. At the same time, the threaded connection between the metal cover 71 and the nitrogen oxide probe 6 and the threaded connection between the metal back cover 73 and the metal cover 71 are convenient for later maintenance, replacement and reuse, which effectively prevents the accumulation of carbon deposits, avoids the reduction of vehicle power, and reduces fuel consumption.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nitrogen oxide sensor that prevents carbon deposition and clogging, comprising a sensor body (1), characterized in that: The two ends of the sensor body (1) are respectively fixedly connected to mounting plates (2), the upper end of the mounting plate (2) is fixedly mounted with a monitoring connector (3), the upper end of the sensor body (1) is fixedly mounted with a control unit (4) at a position close to the monitoring connector (3), one end of the control unit (4) is fixedly connected to a wiring harness (5), one end of the wiring harness (5) is fixedly connected to a nitrogen oxygen probe (6), and one side of the nitrogen oxygen probe (6) is mounted with a resonance mechanism (7); The resonance mechanism (7) comprises a metal cover (71) movably connected to the inside of one side of the nitrogen and oxygen probe (6), four groups of ventilation holes (72) are opened on the outer side of the metal cover (71), a metal back cover (73) is arranged on one side of the metal cover (71), a threaded ring (74) is arranged at one end of the metal back cover (73) near the inside of the metal cover (71), a conical groove (75) is arranged inside the threaded ring (74), a carbon flow hole (76) is opened near the middle position of the inner side of the threaded ring (74), a metal filter (77) is fixedly connected to the inner wall of the metal cover (71) near the other side, and a metal ball (78) is placed at the inner bottom of the metal cover (71).

2. The anti-carbon deposition and blockage nitrogen oxide sensor according to claim 1, characterized in that: One side of the metal cover (71) is in threaded connection with the interior of the nitrogen and oxygen probe (6), and the number of each of the four groups of vent holes (72) is three, and the four groups of vent holes (72) are in communication with the interior of the metal cover (71).

3. The anti-carbon deposition and blockage nitrogen oxide sensor according to claim 1, characterized in that: The metal back cover (73) and the threaded ring (74) are integrated into one body, and the threaded ring (74) is threadedly connected to the inner side of the metal cover (71).

4. The anti-carbon deposition and blockage nitrogen oxide sensor according to claim 3, characterized in that: The conical groove (75) is communicated with the carbon flow hole (76), and the metal filter screen (77) is located on one side of the metal fixing plate (710).

5. The anti-carbon deposition and blockage nitrogen oxide sensor according to claim 1, characterized in that: Three groups of springs (79) are fixedly connected to the inner wall of the metal cover (71) near the front side, and the rear ends of the three groups of springs (79) are fixedly connected to metal fixing plates (710).

6. The carbon deposit-resistant nitrogen oxide sensor according to claim 5, characterized in that: The metal ball (78) is movably placed inside the metal cover (71), the three groups of springs (79) are arranged in a formation, and the metal fixing plate (710) is located between the inner metal back cover (73) of the metal cover (71) and the metal filter (77).

7. The carbon deposit-resistant nitrogen oxide sensor according to claim 1, characterized in that: The sensor body (1) is made of a metal high temperature resistant material, and the two sets of mounting plates (2) are respectively located at two ends of the sensor body (1) close to the front and rear side edges.

8. The carbon deposit-resistant nitrogen oxide sensor according to claim 1, characterized in that: The monitoring joint (3) is located at the upper end of the sensor body (1) near the middle position, and the outer side of the nitrogen and oxygen probe (6) near the metal cover (71) is set to be threadedly connected.

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