Piston Step Motion

To ensure that the engine operates, the piston must always move continuously, the movement of the piston stops at TDC (Top Dead Point) or TMB (Bottom Dead Point). Both of these points are called dead center. When the piston moves upward, from BDC to TDC, or moves down from TDC to BDC, one single motion of the piston is called "step", a distance of movement of the piston is measured in mm.
To produce more power, an examination of the relationship between stride length with a diameter of the piston. The composition of the length and diameter of the piston is shown step by step drawing machine can make short-run higher speeds, and allows for higher power as well.

Movement of the pistons move within the cylinder chamber is a straight or linear movement. To utilize the linear motion, then the motion must be converted into a rotary motion (rotary). The change was made by the movement of the crankshaft. In the four-stroke cycle engine, the cycle consists of four steps piston, two up and two down. This cycle occurs during two crankshaft rotations. While the two-cycle engine, the piston cycle there are two steps, one up and one down. This cycle occurs during one rotation of the crankshaft.