IC Engine Efficiency

With increasing temperature of intake air IC engine efficiency will increase or decrease? Explain

Questions by anurag_mechanical

Showing Answers 1 - 9 of 9 Answers

hosam_ozo

  • Apr 8th, 2010
 

ICE has many efficencies
1) Indicated thermal effeciency
2) Break thermal Effeciency
3) Volumertic Effciency
4) Relative efficency

With Increasing the Inlet temperature the density of air decrease, so volumetric effeciency, one of the most important parameters in ICE will be affected by the inlet gas temperature.
It will increase to some value then decrease if the inlet air temp. increase to high values as the density of the air decrease.
The modern designs make the Exhaust manifold close to the intake manifold to increase the inlet gas temp., that leads to make the combustion easier only at some designed values . Specially in the SIE the evaporation will faster and more efficient.

aakashpanchal

  • May 7th, 2010
 

ICE has many efficencies
1) Indicated thermal effeciency
2) Break thermal Effeciency
3) Volumertic Effciency
4) Relative efficency

With Increasing the Inlet temperature the density of air decrease, so volumetric effeciency, one of the most important parameters in ICE will be affected by the inlet gas temperature. It will increase to some value then decrease if the inlet air temp. increase to high values as the density of the air decrease. The modern designs make the Exhaust manifold close to the intake manifold to increase the inlet gas temp., that leads to make the combustion easier only at some designed values. Specially in the SIE the evaporation will faster and more efficient.

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naveen kumar singh

  • Jul 22nd, 2012
 

With the increase in temperature of intake air specific heat cp and cv increase by equal amount and it will decrease the ratio cp/cv which increase the efficiency...

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Mallayya S M

  • Oct 12th, 2012
 

As the pressure increases inside the combustion chamber while the fuel enter to the chamber the temperature also increases when the piston moves from bottom dead centre to top dead centre.

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manoj kuamr

  • Dec 12th, 2012
 

what is meant by knocking

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Awais

  • Jan 11th, 2013
 

Higher intake temperature of inlet gasses (without effective compression through a turbo charger or supercharger ) will result in decrease in volumetric efficiency of the engine as less air will enter inside the cylinder due to lower density of air fuel mixture.

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vishwa

  • Jan 12th, 2013
 

The unwanted sound coming from the engine due to the rapid pressure rise is called Knocking

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