Auxiliaries
Auxiliary systems are defined by what the vehicle needs to do, not by the powertrain alone. A bus needs power steering and pneumatic brakes. A forklift needs hydraulic lift capacity. A specialty vehicle may need all three.
Renco approaches auxiliaries with a use-case-first mindset — selecting and integrating the right systems for the application, connecting them to the electrical architecture, and managing their behavior through the vehicle control system.
In an electric vehicle there is no engine to drive a hydraulic steering pump. Power steering needs its own dedicated solution — one that delivers consistent steering assist independently of vehicle speed or operating state.
Renco supplies and integrates the Dana TM4 electro-hydraulic power steering system for applications that require hydraulic assisted steering. The EHPS is a self-contained motor, pump, and inverter unit that runs on the 24V board net, communicates with the VCU via CAN, and delivers power on demand rather than continuous flow.
This makes it well suited for buses, heavy and medium-duty trucks, and off-highway machines where reliable, efficient steering assist is a system requirement.
Many commercial and specialty vehicles depend on hydraulic power for work functions — lifting, clamping, tilting, or other machine operations. Electrifying the vehicle means replacing the engine-driven hydraulic pump with an electrically driven equivalent.
renco selects and integrates the electric motor and pump unit that meets the hydraulic flow and pressure requirements of the application. We own the system up to the pump outlet — connecting it to the electrical architecture, sizing it for the duty cycle, and integrating its control into the VCU.
What happens downstream — the hydraulic lines, valves, and actuators — is defined by your vehicle and its existing hydraulic system.
Larger commercial vehicles typically rely on pneumatic systems for braking and other functions. In an electric drivetrain, the air compressor needs to be electrically driven and integrated into the vehicle's electrical and control architecture.
renco selects and integrates the electric compressor for applications that require pneumatic supply, ensuring it is correctly sized, powered, and managed as part of the full system.
As with hydraulic systems, renco's scope covers the compressor and its integration into the electrical architecture. The pneumatic circuit beyond that point remains within your vehicle's existing system.
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