Electric Hydraulic Pumps

Electric hydraulic pumps provide power to machineries. Examples of such machineries range from something as ordinary as the automatic garage door, the power steering mechanism in vehicles, to complex machineries like power excavators used to clear and move debris. Aside from these, electric hydraulic pumps have many other uses in construction, industrial and manufacturing settings.

Types Of Electric Hydraulic Pumps

Electric hydraulic pumps come in three types:

- piston pumps

- gear pumps

- vane pumps.

All these pumps are called positive displacement pumps.

This means that the hydraulic fluid within the hydraulic cylinder was pre- measured. The effect is that there is no need to exercise control of the pressure being generated within the cylinder. Thus it will produce energy that is premeasured in strength and force.

How Electric Hydraulic Pumps Work

Electric hydraulic pumps provide energy with the use of hydraulic cylinders. These cylinders have two chambers and a reservoir. Within this reservoir is the hydraulic fluid having either oil or a substance having an oil-like consistency. The reason for this consistency is to ensure that it cannot be compressed. Instead it is displaced when pressure is applied to it. The movement of this fluid from the reservoir into one chamber pushes the piston rod which in turn moves the fluid onto the next chamber. This movement builds the pressure within the cylinder thus extending the full length of the piston releasing linear motion. This hydraulic power is then transformed to mechanical power.

Electric hydraulic pumps need electricity to initialize the pump. Once the hydraulic pump is running, the electricity input can be shut off and the pump can run solely on hydraulic power alone. This is a stable and reliable source of energy. Since only a small charge is needed to power up the hydraulic pump, this pump is ideal for emergency situations where energy is limited and conservation of energy is a necessity.

Use Of Electric Hydraulic Pumps In Hybrid Cars

It is also this facet of the electric hydraulic pumps which made it ideal for use in the hybrid cars of today. Its initial electricity input comes from the battery. The battery merely gives a small amount of electricity to charge up the pump. The rest of its electricity can be diverted for other uses like in signal and brake lights. Since the charge is a minimal one, the vehicle tends to run slowly at the onset. But once the power reaches the hydraulic pump, the vehicle will gain speed just as fast as a gasoline run vehicle.

Another advantage for using electric hydraulic pumps in hybrid cars is the fact that it uses merely a fraction of oil as compared to other pumps. These hydraulic pumps are sealed thus minimizing the spill of oil and at the same time prevents contaminants from destroying the pump. Hence, the advantage of well sealed pumps is the defense it offers against contaminants. Thus parts and hydraulic fluid are preserved and lasts longer. Expenses on maintenance and repairs are decreased and will redound to the owner as savings. Thus higher output is achieved at less cost.

Furthermore, the protective covering makes the electric hydraulic pumps ideal for use in dirty places and in areas of varying temperatures. The reason behind the heavy reliance of the industry on electric hydraulic pumps, just like air hydraulic pumps, is not only because of the fact that they are well sealed but also because of their durability as well as ease of management and control.