* 4 stroke v/s 2 stroke engine

     
 4 stroke engine                                                                            2 stroke engine 

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• One power stroke for 2 revolutions.                           One power stroke for every revolution

 For the same speed, the two-stroke engine can deliver doubled power output than the 4 stroke. 

• High volumetric efficiency                                        Lower volumetric efficiency         

                      Volumetric efficiency refers to the breathing ability of the engine.     

• Based on Valve actuating mechanism                       Based on Port mechanism 

                                          This mechanism help for intake and exhaust. 

• Higher weight                                                           Lightweight 

• Efficiency matters ( car,bus etc.)                               Cost, weight matters( motorcycle etc)