What kind of sensors are used for exhaust gas?
What kind of sensors are used for exhaust gas?
Exhaust Gas Temperature Sensors. Abstract: The main measurement methods used for the determination of exhaust gas temperatures include resistance temperature sensors and thermocouples. Resistive sensors commonly used for engine exhaust gas applications include platinum resistance sensors, such as Pt200, and NTC thermistors.
Where are the EGT sensors on an engine?
EGT sensors, sited on the hot areas of the engines, pose some significant challenges for cable, which might have to withstand surrounding temperatures that can reach as high as 600°C depending on where they are located.
Why is EGT important in an internal combustion engine?
In modern internal combustion engines, the knowledge of the exhaust gas temperature (EGT) is necessary for the management and diagnosis of the exhaust gas aftertreatment system, as well as for the protection of components that may be sensitive to thermal overloads.
Where are the temperature sensors in the engine?
Considering a medium/high speed engine running at 1200 rpm, this can see extreme changes in temperature up to 10 times per second. During each cycle, the temperature sensor located at the cylinder head will be exposed to the heat and cold exhaust flow.
What are the symptoms of a bad oxygen sensor?
Symptoms of a Bad or Failing Oxygen Sensor 1 Check Engine Light comes on The first line of defense is the Check Engine Light. 2 Bad gas mileage and rotten egg smell If the oxygen sensor is going bad, the fuel-delivery and fuel-combustion systems will be thrown off. 3 Rough engine idle and misfires
How does the exhaust gas temp sensor work?
The Exhaust Gas Temperature sensor is a thermistor element fixed in cement to protect from vibration and housed in stainless steel to withstand extreme temperatures of up to 900°C. Changes in temperature result in changes in resistance of the sensor and this is communicated to the ECU as a voltage.
Can a check engine light be an oxygen sensor?
It seems as though the check engine light and O2 Sensor codes have always gone hand in hand. I can’t even begin to tell you how many perfectly good sensors I’ve seen replaced for a rich/lean code, or as a cure to a service engine light that comes and goes. Fact is, when oxygen sensors were first being used, they did tend to fail.
Why do we need an exhaust pressure sensor?
This system mainly ensures that the engine receives adequate back pressure in order to function optimally. If the engine doesn’t receive appropriate back pressure it would result in clogging of excess exhaust gas and thereby reducing the performance of the engine and increasing the wear and tear of the moving parts of the engine. Hope this helps.
