COMPRESSION STROKE

All about engine the piston does compress the suction air and fuel mixture on t.d.c. that's a compression stroke and even  the inlate valve and exhaust valve remains closed  for this  presses. And the cylinder is air tight around during this presses . and the compression stroke would be completed when the piston reach on  t.d.c. and the piston generate compression as (120to 150) pond on t.d.c. and at the same time the air and fuel mixture does press on piston head. And the crankshaft does completed one round when the compression stroke will complete. Thank you meet you soon here