Combustion in engines
Download as PPTX, PDF
1 like121 views
The document discusses combustion in engines, defining combustion as an exothermic chemical reaction between a fuel (carbon) and oxidant (oxygen). It notes that complete and incomplete combustion can occur. Improvement in combustion can be achieved by maintaining the proper stoichiometric air to fuel ratio, ensuring proper mixing of air and fuel through turbulence and injection characteristics, and using techniques like EGR. The document focuses on defining combustion and factors that influence combustion efficiency in engines.
Combustion in engines
- 1. B Y A S A R O T E S R E S C O E , K O P A R G A O N Combustion in engines
- 2. Engine Performance Efficiency Emissions Combustion
- 3. What is Combustion ? It is a exothermic chemical reaction that takes place between a fuel(Carbon) and an oxidant(Oxygen). Complete Combustion Incomplete Combustion In engines generally alkanes react with the oxygen to form heat(pressure). This heat generally gives rise to plasma state in the combustion chamber which we call as a flame
- 4. Improvement in Combustion Have proper air(oxygen) : Fuel(alkanes) ratio Stoichiometric ratio(Petrol) Have proper mixing of air and fuel Turbulence; Squish; Squash etc. Having proper spray characteristics through injector. Fuel Penetration; Atomization; Spray area, fuel injection pressure, EGR, timings etc.