This module will explain:
1. The basic principles of hydraulic control that form the basis of every hydraulic component's design.
2. Fluid PRESSURE creates FORCE on a PISTON creates MOVEMENT against a SPRING.
3. PRESSURE DROP across and ORIFICE creates FLOW proportional to the orifice SIZE.
4. LOAD PRESSURE changes effects the CONTROL PRESSURE.
5. LEAKAGE results from small CLEARANCES between the SPOOLS and BORES.
6. Dynamic SEALS reduce leakage but cause HYSTERESIS.
7. Restricting VOLUME changes is used to control TIMINGS
This module is intended to identify and explain some of the most important hydraulic design features that are common in every system.
Beginners, operators, and managers should gain a clear understanding of the primary hydraulic principles.
Maintenance engineers should better appreciate which features affect their equipment.
Design engineers should already understand these concepts but will refresh an appreciation of the importance.
Students are expected to be familiar with:
1. Where hydraulic fluid power is used e.g. types of machines and industries.