Next Generation of Mobile Hydraulic Systems
As we move into the age of electrification, the need to improve the efficiency of hydraulic systems is going to become more and more critical to improving the use cases for BEV equipment. Achieving these goals is going to require looking past traditional methods and capitalizing on the benefits of modern electric motors and controllers. Capitalizing on these benefits does not mean moving completely away from hydraulics and implementing electric actuators in their place, these actuators may have some benefits, but if you look at the system in a different way these benefits can be easily replicated while maintaining the same actuators that have been working in these applications for decades.
Below is a simple graphic showing the Hydrapulse EHPU product paired with a bi-rotational pump next to an electromechanical actuator. Essentially these two examples will operate in the same way, the motor rotates one direction and the cylinder extends, the motor rotates the other direction and it retracts. This is going to be the most efficient way to perform this type of work, due to the on-demand nature of these. The benefits of staying with a hydraulic On-Demand system may not be obvious to everyone when looking at these systems side by side, but hydraulics provides features to equipment that ensure durability, performance, and safety that is very hard to replicate with electric actuators.
The benefits of a distributed On-Demand Hydraulic System –
- Can utilize existing actuators that have been proven in the applications over time.
- Maintains a level of familiarity within the system to help technicians with the transition.
- Hydraulic systems are better at handling shock loads that happen regularly with construction equipment.
- Maintain the “float” functionality that can be required within Hydraulic loaders and plowing applications.
- Maintains the power density of Hydraulic actuators
- Man lift applications can maintain gravity down functionality for loss of power situations.
Implementing a distributed On-Demand Hydraulic system is not an easy task, especially when you start to look at the components available on the market today and how many pieces would be required to build this system from scratch. PM Motor, Inverter, Pump to Motor Adapter, Hydraulic Pump, Valves, Motor and Electronics cooling; the list goes on and on and this would be required for each actuator. This is the reason that the Team at Terzo Power systems developed the Hydrapulse motors and Bi-Rotational pump packages, this system combines the Motor, Inverter, Pump, and special valve system designed to direct oil from the low pressure side of the pump back through the motor for cooling. All of these components being combined provides engineers a true plug and play solution that allows for a clear path to implement a distributed style hydraulic system.
For more information on the Hydrapulse EHPU Systems and EHPU Bi-rotational pumps check out the EHPU product page and data sheet.