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.
A spike in pressure can be a desired effect as it gives the engine a large increase in midrange torque without placing a lot of strain on the engine as the higher boost pressure is only reached momentarily at mid range RPM rather than having that boost level all the way through the rev range.