Figure 10.10 shows a mechanical hydraulic servo system with automotive power steering, the sequential operation of which occurs as follows: • The input or command…
Fail-safe circuits are basically designed to prevent injury to the operator or damage to the equipment. In general they prevent any accidental fall or overloading…
From our earlier discussions, we have seen how a sequence valve can be used to create sequential operations in a hydraulic circuit. The circuit depicted…
Figure 10.5 illustrates the use of a counterbalance or backpressure valve to keep a vertically mounted cylinder in upward position during pump idling. The counterbalance…
Figure 7.26 is an illustration of a common type of water-cooled heat exchanger used in hydraulic systems. This is typically a shell and tube-type heat…
Figure 7.25 shows an air-cooled heat exchanger. The hydraulic fluid to be cooled is pumped through the tubes that are finned. As the fluid flows…
Heat is generated in a hydraulic system because of the simple reason that no component can operate at 100% efficiency. Significant sources of heat include…
In this application (Figure 7.23), the accumulator acts as a compensator, by compensating for losses due to internal or external leakage that might occur during…
This is one of the most common applications of an accumulator. In this application, the purpose of the accumulator is to store the oil delivered…
The bladder-type accumulator contains an elastic barrier between the oil and gas as shown in the cross-sectional view in (Figure 7.20). The bladder is fitted…