Force - A push or pull acting upon a body. In a hydraulic cylinder, it is the product of the pressure on the fluid, multiplied by the effective area of the cylinder piston. It is measured in pounds or tons. Friction - The resistance to fluid flow in a hy- draulic system.
temperature increase The pressure of a contained sample of gas can be increased by increasing its temperature, or by decreasing its volume, or by injecting additional mas â¦ s into it.
Boyleâs Law: âas pressure increases and volume decreases the concentration of a. gas will increaseâ The expected ethanol value of a dry gas standard changes with. pressure (the lower the pressure the lower the reading), therefore it is necessary to. calculate a correction factor to compensate for pressurechanges.