fbpx

 

I am testing the Rotax 912 engine and observing EGTs greater than the usual EGT limit. At full throttle, 5500 RPM, My EGTs are in the range 900-1000 °C. Is it realistically possible that exhaust gases burn at this much higher temperature? As 1000 °C is significantly higher temperature. So I was amazed whether the EGT value is actual 1000 °C or an erroneous value due to some other reason.

 

  • Re: Highest Possible Value of EGT?

    by » 2 years ago


    And what about others parameters?

    The EGT value is on ground testing?

    Oil temperature?CHT?

    If oil and CHT are normal range, EGT sensor may be malfunction.

     


  • Re: Highest Possible Value of EGT?

    by » 2 years ago


    1000C is 1832F. It's not correct. You have another issue. Maybe you instrument depending on Mfg needs a resistor in line?


    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


  • Re: Highest Possible Value of EGT?

    by » 2 years ago


    Which type of sensor do you use and are they set up in your instrument correctly. I take it one gets strange readings when instrument set up and sensor type don't match.


  • Re: Highest Possible Value of EGT?

    by » 2 years ago


    I am using Rotax Flydat for sensor display. All other temperatures are in range like Oil Temp, CHT and Coolant Temp. EGT sensors which I am using are Rotax K-type thermocouple probes. If there is a sensor malfunction why does it show a gradual increase in temp with throttle increase, it should directly read 950 °C ot 1000 °C rather than showing a reasonable expected temp readout with throttle increase? But when I keep throttle steady at max and rpm around 5500-5700, one or two EGTs show a distrubing value of 950-1000 °C. And with the decrease in throttle and RPM, EGTs also drop to normal range.


  • Re: Highest Possible Value of EGT?

    by » 2 years ago


    @Roger Lee please reply in detail. I would be waiting for your expert opinion.

    My instrument is Flydat and it does not need a resistor to pull-up or pull-down. It is well calibrated and shows true vales with other engine.


You do not have permissions to reply to this topic.