The inlet port on a hydraulic pump is larger than the discharge port for several reasons:
- To reduce fluid velocity: The hydraulic system operates by using a fluid to transmit power and pressure. The fluid moves through the system at high pressure and velocity. When fluid enters the pump, it is moving quickly, which causes friction and puts stress on the pump. To reduce the velocity and stress on the pump, the inlet port is made larger, which allows more fluid to enter at a lower velocity.
- To increase efficiency: By reducing the velocity and stress on the pump, the inlet port being larger allows the pump to operate more efficiently. This means the pump can move fluid through the system with less energy, which can decrease operating costs.
- To prevent cavitation: Cavitation occurs when fluid vaporizes inside the pump due to low pressure. This can damage the pump and decrease its efficiency. By making the inlet port larger, more fluid can enter the pump, which helps prevent cavitation from occurring.
Overall, the design of the larger inlet port helps improve the efficiency, reliability, and longevity of the hydraulic pump.