\nExhaust Gas Temperature Sensors (EGTS)<\/b>\u00a0are located:<\/p>\n
- \n
- T3<\/b>\u00a0\u2013 before the Turbocharger\u00a0(TBC)<\/b>.<\/li>\n
- T4<\/b>\u00a0\u2013 after the Turbocharger\u00a0(TBC)<\/b>.<\/li>\n
- T5<\/b>\u00a0\u2013 before\/after Diesel Oxidation Catalyst\u00a0(DOC)<\/b>.<\/li>\n
- T6<\/b>\u00a0\u2013 before\/after Diesel Particulate Filter\u00a0(DPF)<\/b>\u00a0and Selective Catalytic Reduction\u00a0(SCR)<\/b>.<\/li>\n
- TEGR<\/b>\u00a0\u2013 before\/after High-Pressure\u00a0EGR<\/b>\u00a0Cooling System.<\/li>\n<\/ul>\n
Exhaust Gas Temperature Measurement Points \u2013 Diesel<\/b><\/p>\n
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![\"\"](\"https:\/\/mte-thomson.com\/en\/wp-content\/uploads\/2021\/11\/EGTS-1-300x141.jpg\")
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With the assistance of the different\u00a0EGTS<\/b>\u00a0signals, the exhaust gas treatment devices can operate in their optimal conditions and their functionalities are constantly verified (OBD \u2013 On-Board Diagnostics<\/b>).
\nFor instance:<\/p>\n- \n
- The Temperature Probes before and after the Turbocharger are used to verify whether a temperature decrease (approx. 150\u00b0C) occurred.<\/li>\n
- The\u00a0DOC<\/b>\u00a0and the\u00a0SRC<\/b>\u00a0need to achieve a minimum operation temperature, respectively 140\u00b0C and 190\u00b0C.<\/li>\n
- The temperatures before the turbocharger, after the\u00a0DPF<\/b>\u00a0and in the\u00a0DOC<\/b>\u00a0are also monitored in order to avoid overheating of these components.<\/li>\n
- The performances of the temperatures after and before the\u00a0DPF<\/b>\u00a0(together with the Differential Pressure Sensor\u2019s signal) are used to verify a successful regeneration of that component.<\/li>\n<\/ul>\n
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Technologies:<\/h3>\n
MTE-THOMSON manufactures two different technologies of EGTS, NTC Thermistor and PT200.
\nThis way we can offer a complete range of products in the aftermarket.<\/p>\n<\/p>\n
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![\"\"](\"https:\/\/mte-thomson.com\/en\/wp-content\/uploads\/2021\/11\/EGTS-3-300x141.jpg\")
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Application:<\/h3>\n
The signal is measured using a Voltage-Divider. Most ECUs use a 2.2 kOhms pull-up resistor.<\/p>\n
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![\"\"](\"https:\/\/mte-thomson.com\/en\/wp-content\/uploads\/2021\/11\/EGTS-4-300x164.jpg\")
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Signals: PT200 X NTC<\/h3>\n
A comparison between the signals of a NTC and a PT200 EGTS can be seen below. In this example, it was used a pull-up resistor of 1000 Ohms and a 5V voltage supply.<\/p>\n
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![\"\"](\"https:\/\/mte-thomson.com\/en\/wp-content\/uploads\/2021\/11\/EGTS-5-300x194.jpg\")
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Components:<\/h3>\n
- \n
- Closed Stainless Cover:<\/b>\u00a0Protects the sensor element against the corrosion atmosphere and water drops from the exhaust.<\/li>\n
- NTC Thermistor:<\/b>\u00a0Negative Temperature Coefficient ceramic element.<\/li>\n
- PT200:<\/b>\u00a0Platinum element with Positive Temperature Coefficient, which has a resistance of 200 Ohms at 0\u00b0C.<\/li>\n
- MIC:<\/b>\u00a0Mineral Isolated Cable that separates the hot part from the cold part.<\/li>\n
- Wires:<\/b>\u00a0Teflon insulated \u2013 oil, gas and water-resistant. Stranded wire \u2013 Greater flexibility<\/li>\n
- Connectors:<\/b>\u00a0PA+GF. OEM Quality<\/li>\n<\/ul>\n
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Malfunction:<\/h3>\n
Malfunctions of the Temperature Probes can lead to:<\/p>\n
- \n
- Unnecessary filter regeneration, leading to a reduction in the filter\u2019s lifespan<\/li>\n
- Power losses if the sensor is not detecting the filter saturation level<\/li>\n
- Dashboard light for Particulate Filter and blinking light pre-heating<\/li>\n
- Deterioration of Turbocharger, DOC, SCR components and DPF<\/li>\n
- Increase in oil consumption<\/li>\n
- Increase in emission levels of CO, NOx and HC<\/li>\n<\/ul>\n
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Quality<\/h3>\n
The\u00a0EGTS<\/b>\u00a0from\u00a0MTE-THOMSON<\/b>\u00a0is produced with the best raw materials, with automated processes and is tested 100% with\u00a0OEM<\/b>\u00a0expertise.<\/p>\n
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Warranty<\/h3>\n
All MTE-THOMSON products are guaranteed for 01(one) year against defects from faulty materials or fabrication. The guarantee is limited to the replacement of the faulty part; we cannot extend the guarantee to cover defects caused by misuse, neglect, accident or wear and tear. We cannot accept liability for consequential loss or damage which is claimed to have resulted from the use of one of our products. More information: www.mte-thomson.com.br<\/p>\n
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- NTC Thermistor:<\/b>\u00a0Negative Temperature Coefficient ceramic element.<\/li>\n
- The temperatures before the turbocharger, after the\u00a0DPF<\/b>\u00a0and in the\u00a0DOC<\/b>\u00a0are also monitored in order to avoid overheating of these components.<\/li>\n
- T4<\/b>\u00a0\u2013 after the Turbocharger\u00a0(TBC)<\/b>.<\/li>\n