Electro-Hydraulic System is the Ideal Solution for Power Steering in Buses

Electro-Hydraulic System is the Ideal Solution for Power Steering in Buses Bus Pump & Motor Division Though gas-powered, internal combustion engine driven vehicles have been the norm in the automotive industry for over 100 years, electrification is growing. The traditional engine design was efficient, reliable, and easy to use, but gasoline powered vehicles are loud, dirty, and harmful to the environment. Given these drawbacks, electric vehicles have started to gain market share in commercial and personal markets. Public transportation is moving toward electrification at a faster pace than other markets, spurred by the deployment of electric vehicles in China.

Electrification brings new challenges

When an electric motor is implemented, the noise created under the hood is significantly decreased. This is a huge benefit of electrically powered vehicles, but also causes noises from other systems to become noticeable. Power steering, A/C systems, and hydraulics introduce a new layer of sounds that can be annoying to drivers and riders.

An innovative solution

Parker’s Pump & Motor Division teamed with the Hydraulic Pump and Power Systems Division to create the Electro-Hydraulic Pump System, or eHPS. The eHPS combines the low noise performance of the PGP505H’s helicoidal design with the high performance of the GVM motor, creating a system that provides on-demand power steering, a simplified installation process, high efficiency, and quiet operation. Quiet and powerful, the eHPS is robust enough for most electric bus applications. Benefits of the eHPS include:

Motor, pump, tank, relief valve, filter, and inverter in one package
Efficiency of over 80%
Quiet operation of less than 57dBa
Built and assembled in USA

The eHPS is ideal for buses and large commercial vehicles that require large amounts of hydraulic power for steering assistance, but also necessitate the quiet operation of an electric system. In addition, the eHPS has IP67 protection, is tested to SAE J1455 vehicle standards, and designed to ISO 16750 standards, making it ideal for replacement applications. Electrification is the future of the automotive industry, and public transit is leading the charge. Learn more about Parker’s innovative new product today.

The Pump & Motor Division is a market leader in gear pump and low speed-high torque gerotor motors, that continues to blaze a trail in the industry by developing new technologies while maintaining the high level of service synonymous with Parker Hannifin. Between its two locations in North Carolina and Tennessee, the division employs decades of industry experience to better serve you and your application.

Electro-Hydraulic System is the Ideal Solution for Power Steering in Buses CT Lefler Pump & Motor Division This article was contributed by CT Lefler, marketing product manager (e-business), Pump & Motor Division, Parker Hannifin Corporation.