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Postări recente
China Supplier of Automotive Exhaust Temperature Sensor
The EGT sensor is responsible for reading the temperatures of the aftertreatment system components such as inlet DOC, inlet DPF, outlet DPF, inlet SCR, outlet SCR, etc., and sending this information back to the ECM to maintain proper temperatures that control the aftertreatment system to reduce the harmful emissions.
Systematic analysis of automotive exhaust temperature sensors, comprehensive core functions, technical parameters, application scenarios and development trends:
eu. Core functions and working principles
Real-time monitoring and protection:
Installed at the outlet of the exhaust manifold, three-way catalytic converter or turbocharger, directly detect the high-temperature exhaust gas temperature (the working range is usually 200℃–1000℃).
Core function: Prevent the catalyst from overheating and melting (efficiency decreases when it exceeds 300℃, and it may be damaged above 400℃), and control the regeneration temperature of the particulate filter (DPF) in diesel vehicles.
 EXHAUST GAS TEMPERATURE SENSOR FITS SEAT LEON,SKODA SUPERB, YETI 5L, 03L906088CC |
 A0071535128 Exhaust gas temperature sensor for Mercedes Benz |
 04L906088BD Exhaust Temperature Sensor for VW AUDI |
Signal feedback mechanism
Platinum resistance type (such as PT200): The resistance is 200Ω at 0℃, and the resistance increases at a uniform rate as the temperature rises, with an accuracy of ±1.5% (above 300℃).
Thermocouple/NTC type: Thermocouples are resistant to ultra-high temperatures but have low accuracy, and NTCs are low in cost but limited in high temperature range.
II. Comparison of key technical parameters and types
| Parameters | Platinum resistance (PT200) | Thermocouple/NTC type |
|---|---|---|
| Temperature range | -40℃ ~ +850℃ | Maximum 1000℃ (termocuplu) |
| Accuracy | ±2.5℃（-40~300℃） | ±2%~5% (high temperature section) |
| Response speed | Medium | Slow (anti-thermal shock design) |
| Packaging material | Stainless steel corrosion-resistant housing | Metal housing (anti-sulfide corrosion) |
| Applicable scenarios | DPF regeneration control, SCR system | Gasoline vehicle catalyst protection |
III. Typical installation location and fault impact
Installation location:
Behind the three-way catalytic converter (gasoline vehicle) or DPF inlet (diesel vehicle), some models have multiple sensors arranged in the middle/end of the exhaust pipe.
Fault symptoms and consequences:
Failure performance: Abnormal lighting of the exhaust warning light (exceeding the 900℃ threshold), difficulty in cold start, and reduced engine power.
Chain risk: Catalyst high temperature meltdown (repair cost exceeds 10,000 yuan), DPF regeneration failure leading to excessive emissions.
 55218447 Exhaust Temperature Sensor For ALFA ROMEO |
 22629AA012 Automobile exhaust temperature sensor for Subaru |
 68193645AB Exhaust Gas Temperature Sensor |
Iv. Technology evolution trend
Improvement of accuracy and reliability:
PT200 sensors gradually replace traditional thermocouples, because their linear output characteristics are more suitable for OBD diagnostic systems (error <±1.5%).
Extended application of new energy
Monitor the temperature of the turbocharger (T3 sensor) in hybrid models to prevent thermal shock when switching between motor and engine.
Integrated design
The sensor is linked with the EGR valve to dynamically adjust the exhaust gas recirculation flow and optimize emission control.
Industry Trends: De 2025, the penetration rate of platinum resistance sensors in the diesel vehicle market will exceed 60%, and high-temperature direct measurement technology (such as laser temperature measurement) is in the laboratory verification stage.
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Sonda și cablul senzorului DS18B20
DS18B20 Caracteristici ale senzorului de temperatură: impermeabil, anti-coroziune.
Detalii despre ambalaje: poate fi personalizat după cum este necesar. Maxim importat cu ambalaje originale; Pachet TO-92; cantități mari în stoc. Și furnizați senzor digital de temperatură DS18B20 în pachetul impermeabil din oțel inoxidabil.
DS18B20 Cablajul senzorului de temperatură
Cablajul senzorului DS18B20 este un senzor de temperatură digitală utilizat frecvent. Ieșirea este un semnal digital, care are caracteristicile de dimensiuni mici, Hardware scăzut, Abilitate puternică anti-interferență, și o precizie ridicată. DS18B20 Senzorul de temperatură digitală este ușor de conectat, și poate fi aplicat la multe ocazii după ce a fost ambalat, cum ar fi tipul de țeavă, Tipul șurubului, tip magnet, și tipul pachetului din oțel inoxidabil. Există diverse modele, inclusiv LTM8877, LTM8874 și așa mai departe.
sonde și componente ale senzorului termistor
termistor (coeficient de temperatură negativ) sonde senzor (Sonda depășită, Tubul SST închis la capăt; Silicon Foley Cateter; Epoxid sigilat, Tub de alamă placat cu nichel) /componente (Cablu & conector) Potrivit pentru diverse aplicații și industrii. Sondele și componentele noastre termistor sunt potrivite pentru aplicații de detectare a temperaturii, cum ar fi detectarea temperaturii suprafeței, Air-Gas, aparate electrice, surse de alimentare, HVAC/Sisteme de refrigerare, lichide, tratament medical, și monitorizare.