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    Discussion in 'The main mechanical design forum' started by Dhanush, Sep 21, 2011.

    1. Dhanush

      Dhanush Member

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      What does engine going for hunting due to no air receiver tank mean?? :geek:

      Thanks and Regards,
      DN :ugeek:
       
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    3. Dana

      Dana Well-Known Member

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      It may be difficulty with English, but I have absolutely no idea what you're asking. Could you rephrase your question?
       
    4. nilesh

      nilesh New Member

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      Engine hunting is to be dealt with action of governor,as you might know the function of governor is to actuate the air and fuel supply to the engine at various laods,
      Engine (governor) said to be hunting if speed of engine continuesly fluctuated above and below its rated mean speed.
      This happens in any of follwing cases:
      1.Too sensitive governor,that means,even for small variation in speed,governor changes fuel supply by large ammount.For example,suppose load on engine increases,speed of engine will automatically decreases and, if governor is too sensitive,sleeve of governor fall immediately to its lowest position,it will opens control valve wide and supply the exess fuel to engine than its actual requirement,(i.e. A/F mixture will be too rich then it required).
      So,ultimately such action will cause engine speed to fluctuate indefinately,hence we call it as Engine is HUNTING.
      2.Another possible reason can be,partially plugged carburetoror injector,wich lead to inproper supply of air to engine,For example,lets see below case of lawnmovers,

      Many of the smaller lawnmowers used what is called an "air vane governor". This type of system uses the air flowing through the engine to operate a vane back and forth against a spring, just like the mechanical governor does. The big problem with air vane governors is debris sometimes collects in the system blocking air flow. When this happens the engine will over speed. So, with an air vane system it is very important to keep the cooling fins clean so the proper amount of air can move through the engine. The governor spring is precisely calibrated for an engine that has full air flow going through it. If the air flow is blocked it can over speed the engine.

      hope,above information give you some idea towards your doubt,
      Cheers :)
      Nilesh
       
    5. Harshad

      Harshad Member

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      I really enjoy replies from book. It is always easy and better to copy and paste contents from available write up. Good. Keep it up.

      Question is not clear. all the time we can not co relate term "Hunting" with governors. as far as it is attached to Engine, engine performance with respect to load on it matters. Governor is regulator to engine speed on increase or decrease of load on engine. As question includes "No air receiver tank", needs to clear first. Please describe the question.
       
    6. Two-Shoes

      Two-Shoes Member

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      From your question it does sound like problems with a compressor of some sort.
      Also from the question sounds like a message is displaying that an air tank is not connected.
      If this is the case, check the sensor lines and sensors on the tank to the motor control.
      clarification of exactly what we are dealing with would help enormously...
       

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