16-08-2014, 03:44 PM
There is no question that a two stroke internal combustion engine is infinitely simpler to manufacture, has less moving parts & it\'s principle of operation is less complicated than a four stroke internal combustion engine of equal power. A two stroke engine is timed so that the rotary crankshaft valve hole is opening when the position is going up & creating a negative suction pressure, which drows in air fuel mixture during the compression at top dead center (B.D.C.) creating a positive pressure in the crankshaft. The air fule mixture then travels up the bypass where it scavenges the remaining burnt gases trough exhaust port & files the top chamber of the cylinder ready for the next compression & consequent power stroke. It may be noted that all the four working operation viz-1)induction of air-fuel mixture 2) compression of the full charge. 3) power stroke 4) exhaust of the burnt gases are carried out in one revolution of the crankshaft.
There is no question that a two stroke internal combustion engine is infinitely simpler to manufacture, has less moving parts & it’s principle of operation is less complicated than a four stroke internal combustion engine of equal power.
A two stroke engine is timed so that the rotary crankshaft valve hole is opening when the position is going up & creating a negative suction pressure, which drows in air fuel mixture during the compression at top dead center (B.D.C.) creating a positive pressure in the crankshaft. The air fule mixture then travels up the bypass where it scavenges the remaining burnt gases trough exhaust port & files the top chamber of the cylinder ready for the next compression & consequent power stroke.
It may be noted that all the four working operation viz-1)induction of air-fuel mixture 2) compression of the full charge. 3) power stroke 4) exhaust of the burnt gases are carried out in one revolution of the crankshaft