• anonymous
SI Engines - What are the main emissions? What are engine manufacturers doing do reduce engine emissions?
  • Stacey Warren - Expert
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  • katieb
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  • anonymous
si engines spark ignitor to ignite the compresed this case fuel is compresd,ingitd n the presure creatd by burng causes the engine to wrk...
  • anonymous
first of all in si engine petrol is not burnt by by pressure it is burnt by spark caused by spark plug. emissions include compounds of SOx COx . proper timing for spark , timing for valve opening and closing,piston and engine design, as well as engine cooling, etc are the item taken in consideration for reduction of emmision
  • jagatuba
Good answer @akashay045 and I might add that the petrol is not compressed either. Well not in the conventional sense. It is injected into the chamber in a somewhat aerosol form that is mixed with air and it is the air mixture that is compressed not the petrol. Sorry to pick apart your answer @pkjha3105. Nothing against you, just trying to improve the over-all response to the asker. Your input is appreciated. :)

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