When the piston arrive at the lower dead point, it stays there for a while due to the cooperation between a lower dead point stopping wheel and a lower dead point stopping channel.

As each cylinder rotates to top-dead-center, an opposite cylinder rotates to bottom-dead-center.

At any time, both pistons (56, 60) are moving either towards top dead center or towards bottom dead center.

The hot steam pushes the piston (12) towards the bottom dead center (BDC).

A toggle joint drive mechanism simply formed, applicable to a bicycle, and capable of eliminating the top dead center and bottom dead center of a crank.

The cable member (52) is flexed or deflected due to own weight when the plunger is at the bottom dead center.

A cable member (52) is wound over the drum by a length greater than a linear distance between the bottom dead center and the top dead center.

The piston stroke is the distance between its high dead point and its low dead center.

The engine working cycle consists of two strokes: a motion of the piston from the Top Dead Centre to the Bottom Dead Centre; and has a controllable heat-exchange connection with the capacitor and the feed system.

The straight line (14) of the path passes through the center O of the output shaft and interconnects the top dead center TDC and the bottom dead center BDC of the path.

This povides the difference between the travel path of the piston (1) between the lower and upper dead points, and the rotational diameter of the crank shaft bolt (7).

The intake valve (5) is closed during the intake stroke before the piston (2) reaches bottom dead center.

The products resulting from this process are further expanded and cooled when the engine piston moves towards the bottom dead centre.

In other words, displacement is the geometric volume occupied by the set of pistons from the bottom dead center (PMI) to the highest (PMS), also called top dead center.

The engine (1) achieves a Miller cycle by the valve timing changing mechanism (4) setting an intake valve close timing to occur after a bottom dead center timing.