Electric power steering pumps

The electric power steering pump, or EHPS (Electro-Hydraulic Power Steering), is the evolution of the conventional power steering pump.

In EHPS systems the operating pressure is no longer generated by a belt connected to the engine, as in traditional power steering systems, but by an electric engine that provides the exact level of power required for steering.
The electric power steering pump delivers maximum power when the vehicle is stationary, for example during parking, and reduces power output at increased speed, making steering more stable.

Download the "Power steering - steering systems 2016" by GeneralRicambi

The electric hydro-drive pump operates an oil hydraulic mechanism designed to facilitate steering by the vehicle’s driver. The electric hydro-drive’s pump function is, from a theoretical point of view, rather simple and incredibly effective: when the driver turns the steering wheel to the left or right, the electric hydro-drive pump, which is connected to the crankshaft, applies hydraulic pressure to the steering that amplifies the “mechanical” steering exertion carried out by the driver.

The composition of the electric hydro-drive pump provides that an endless screw inside the column, the so-called a globe screw and shares a distributor placed inside the steering box. In this way, the oil flows towards an operator cylinder which, through specific tubes, determines actions on the front wheels.

The electric hydro-drive pump enables the handling of larger vehicles without the driver having to exert particular effort on the steering wheel.

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