A vehicle catalytic converter assembly temperature monitoring device

Abstract

The utility model discloses a kind of vehicle catalytic converter assembly temperature monitoring devices, it belongs to automobile manufacturing technical field.It mainly includes: including instrument panel, ECU, catalytic converter, wire harness is connected between three, the catalytic converter includes main body and manifold, one end of its main body is fixedly connected with manifold, another end is fixed with exhaust pipe connecting flange;The manifold is fixed with supercharger connection port away from the one end of main body;Wherein, main body and manifold outer wall are fixed with temperature sensor.The utility model is connected by multiple temperature sensors and catalytic converter, so that driving computer can be in any working condition Real-time acquisition catalytic converter actual temperature;Make driver be able to understand the working temperature of catalytic converter in first time whether normal, to carry out corresponding intervention in time, such not only improve the service life of catalytic converter, also improve driving experience.The utility model is mainly used to the structure optimization of catalytic converter assembly.

Description

Technical Field

[0001] This utility model belongs to the field of automobile manufacturing technology, and more specifically, it relates to a temperature monitoring device for a vehicle catalytic converter assembly. Background Technology

[0002] During automotive R&D road testing, mass production, factory inspection, and market quality maintenance, the actual temperature of the catalytic converter assembly in a vehicle's exhaust system is not visible. Furthermore, drivers and after-sales service personnel cannot identify the current actual temperature value of the catalytic converter. When a vehicle is driven under heavy load continuously, the catalytic converter temperature cannot be identified immediately, which accelerates catalytic converter aging, shortens its lifespan, and increases maintenance costs.

[0003] In existing technology, the instrument panel cannot display the actual temperature value of the catalytic converter. When a vehicle is driven under continuous heavy load in high summer temperatures, the actual temperature of the catalytic converter will gradually increase. When the catalytic converter temperature is too high, the engine will trigger the torque reduction protection function, which will not only cause the catalytic converter to age faster, but also reduce the driving experience. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a vehicle catalytic converter assembly temperature monitoring device. By connecting multiple temperature sensors to the catalytic converter, the vehicle computer can obtain the actual temperature of the catalytic converter in real time under any operating conditions. This allows the driver to know whether the working temperature of the catalytic converter is normal at the first time, so as to take timely intervention. This not only improves the service life of the catalytic converter, but also improves the driving experience.

[0005] The aforementioned vehicle catalytic converter assembly temperature monitoring device includes an instrument panel, an ECU, and a catalytic converter, which are connected by a wiring harness. The catalytic converter includes a main body and a manifold. One end of the main body is fixedly connected to the manifold, and the other end is fixed with an exhaust pipe connection flange. The end of the manifold away from the main body is fixed with a turbocharger connection port. Temperature sensors are fixed to the outer walls of both the main body and the manifold.

[0006] Preferably, a first temperature sensor is fixed to the outer wall of the manifold.

[0007] Preferably, an EGR connecting flange is fixed at a position adjacent to the first temperature sensor, and the EGR connecting flange is connected to the manifold.

[0008] Preferably, a second temperature sensor is fixed to the outer wall of the main body.

[0009] Preferably, the first temperature sensor and the second temperature sensor are connected to the ECU by a wiring harness.

[0010] Preferably, the outer wall of the main body is fixed with a first fixing bracket and a second fixing bracket.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By connecting multiple temperature sensors to the catalytic converter, the vehicle's computer can obtain the actual temperature of the catalytic converter in real time under any operating conditions. This allows the driver to know whether the catalytic converter's operating temperature is normal at the first moment, so as to take appropriate intervention in a timely manner. This not only improves the service life of the catalytic converter, but also enhances the driving experience. Attached Figure Description

[0012] Figure 1 This is an assembly diagram of the present invention; Figure 2 This is a schematic diagram of the catalyst structure of this utility model; Figure 3 This is a flowchart of the CAN signal of this utility model; Figure 4 This is a signal definition table for this utility model.

[0013] In the diagram, 1. Instrument panel; 2. ECU; 3. Catalytic converter; 31. Main body; 311. First mounting bracket; 312. Second mounting bracket; 32. Manifold; 33. Exhaust pipe connection flange; 34. Turbocharger connection port; 35. Temperature sensor; 351. First temperature sensor; 352. Second temperature sensor; 36. EGR connection flange; 4. Wiring harness. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] like Figure 1 and Figure 2 As shown, a vehicle catalytic converter assembly temperature monitoring device includes an instrument panel 1, an ECU 2 (Engine Control Unit), and a catalytic converter 3, which are connected by a wiring harness 4. The catalytic converter 3 includes a main body 31 and a manifold 32. One end of the main body 31 is fixedly connected to the manifold 32, and the other end is fixed with an exhaust pipe connection flange 33. The end of the manifold 32 away from the main body 31 is fixed with a turbocharger connection port 34. Temperature sensors 35 are fixed to the outer walls of both the main body 31 and the manifold 32.

[0016] like Figure 2 As shown, a first temperature sensor 351 is fixed to the outer wall of the manifold 32. In this way, the first temperature sensor 351 can obtain the temperature of the front end of the catalyst 3 in a timely manner and transmit it to the ECU 2. After data processing, it is displayed on the instrument panel 1, so that the driver can know the real-time temperature of the front end of the catalyst 3.

[0017] like Figure 2 As shown, an EGR connecting flange 36 is fixed adjacent to the first temperature sensor 351, and the EGR connecting flange 36 is connected to the manifold 32. Thus, EGR is short for Exhaust Gas Recirculation, a widely used emission control technology.

[0018] like Figure 2 and Figure 3 As shown, a second temperature sensor 352 is fixed to the outer wall of the main body 31. Thus, the second temperature sensor 352 can promptly obtain the rear-end temperature of the catalytic converter 3 and transmit it to the ECU 2. After data processing, the data is displayed on the instrument panel 1. The second temperature sensor 352, in conjunction with the first temperature sensor 351, allows the driver to not only understand the real-time values ​​of the front and rear temperatures of the catalytic converter 3, but also to visually observe the temperature difference between the front and rear temperatures, enabling the driver to promptly understand the working status of the catalytic converter 3.

[0019] Optionally, the range of the first temperature sensor 351 and the second temperature sensor 352 is 0°C to 1500°C.

[0020] Optionally, the steady-state alarm value of the first temperature sensor 351 and the second temperature sensor 352 is 950°C, and the transient alarm value is 1100°C.

[0021] Optionally, a wiring harness 4 connects the first temperature sensor 351 and the second temperature sensor 352 to the ECU2.

[0022] Optionally, the wiring harness 4 connecting the first temperature sensor 351, the second temperature sensor 352, and the ECU2 is a hard wire.

[0023] like Figure 2 As shown, a first fixing bracket 311 and a second fixing bracket 312 are fixed to the outer wall of the main body 31. In this way, the main body 31 can be fixed to the connecting member through the cooperation of the first fixing bracket 311 and the second fixing bracket 312.

[0024] Specific implementation steps (such as) Figure 3 and Figure 4 (as shown) 1. The first and second sensors are connected to the ECU; 2. The first sensor acquires the temperature at the front end of the catalyst, and the second sensor acquires the temperature at the rear end of the catalyst; 3. After acquiring temperature values, the first and second temperature sensors send CAN signals EMS_Temp1 and EMS_Temp2 to the CAN bus. 4. The instrument panel receives and displays temperature values; 5. When the catalytic converter temperature exceeds the set value, the warning light on the instrument panel will illuminate and an audible alert will be issued simultaneously, triggering the engine torque reduction protection strategy. Once the temperature returns to normal, the audible and visual warnings will automatically cancel, and the engine torque reduction protection strategy will be deactivated.

[0025] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vehicle catalytic converter assembly temperature monitoring device, comprising an instrument panel (1), an ECU (2), and a catalytic converter (3), wherein a wiring harness (4) connects the three components, characterized in that: The catalyst (3) includes a main body (31) and a manifold (32). One end of the main body (31) is fixedly connected to the manifold (32), and the other end is fixed with an exhaust pipe connection flange (33). The end of the manifold (32) away from the main body (31) is fixed with a turbocharger connection port (34). Temperature sensors (35) are fixed on the outer walls of both the main body (31) and the manifold (32). A first temperature sensor (351) is fixed on the outer wall of the manifold (32). A second temperature sensor (352) is fixed on the outer wall of the main body (31).

2. The vehicle catalytic converter assembly temperature monitoring device according to claim 1, characterized in that: An EGR connecting flange (36) is fixed at a position adjacent to the first temperature sensor (351), and the EGR connecting flange (36) is connected to the manifold (32).

3. The vehicle catalytic converter assembly temperature monitoring device according to claim 1, characterized in that: A wiring harness (4) connects the first temperature sensor (351) and the second temperature sensor (352) to the ECU (2).

4. The vehicle catalytic converter assembly temperature monitoring device according to claim 1, characterized in that: The outer wall of the main body (31) is fixed with a first fixed bracket (311) and a second fixed bracket (312).

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