What is an Exhaust Gas Temperature Sensor (EGTS)?
As by title, and EGTS measures the temperature of the gas in the exhaust system. This information is then reported back to the ECU where appropriate action can be taken.
Commonly in Petrol engines the sensors protect key components from higher temperatures common in smaller engines. In Diesel engines EGTS are also used to monitor the temperature
of the DPF to maximise efficiency of regeneration and reduce harmful emissions. It is common to have three or more sensors fitted to the same exhaust system, one before the turbocharger and one either side of the DPF.
How Do EGTS Work?
There are two types of EGTS; with Positive Temperature Coefficient (PTC) and Negative Temperature Coefficient (NTC) sensing elements. The difference between the two is how
they measure temperature. PTC element sensors are the most common, where resistance increases inline with temperature. NTC elements have a high resistance at low temperature
and low resistance at high temperature. In both cases a temperature is assigned to resistance in the ECU, allowing it to take action based on the feedback.
Click on the button below to find out how EGTS’ fail and how to troubleshoot them.
For more information on our range of EGTS please speak to your sales representative, or contact our helpful customer services and technical support department:
info@smpeurope.com
+44 (0) 1623 886400
SMP Europe, Unit 5b, Little Oak Drive, Sherwood Park, Annesley, Notts, NG15 0DR
www.smpeurope.com