In this lesson we will describe the function of an accumulator, contrast bladder and piston style accumulators, list the typical uses of an accumulator and define the terms charge and precharge.
An accumulator is a device that allows a hydraulic system to store oil, under pressure, for an extended period of time.
Precharge: The pressurized gas in the accumulator.
Charge: The hydraulic fluid in the accumulator.
Accumulators come in two basic types.
Each type of accumulator has its own advantages, and a few shortcomings.
A bladder type accumulator, sometimes known as a hydro-pneumatic accumulator, is a metal tank that contains a rubber bladder filled with compressed gas. There is also a poppet valve in the discharge port and a gas valve used to precharge the bladder.
Become a member to get immediate access to the rest of this lesson, and all the other great content on LunchBox Sessions.