Efficient performance
Danfoss continues to lead the industry with groundbreaking fan drive technologies like our reverse displacement motor (RDM). By occasionally changing the airflow direction, accumulations of debris can be dislodged from the vehicle’s radiator to help ensure efficient cooling system performance.
When used in radiator cooling fan applications, the Danfoss RDM uniquely incorporates the external shift valve within the motor itself, eliminating the directional control valve, and either simplifying or completely eliminating the HIC block. With fewer components in the hydraulic circuit, the RDM frees up space in the engine compartment to create additional opportunities for innovation.
Design advantages like this help combat the challenges brought on by today’s harder-working, hotter-running Tier 4-compliant engines, where emission control equipment takes up more under-hood space than ever before. Building on our proven efficiency and reliability, the compact Danfoss RDM motor is technology that’s helping Danfoss engineer tomorrow.
Danfoss offers a wide range of efficient fan drive systems. Below are the benefits and critical considerations you need to take into account as you determine the right system for your specific needs.
Benefits
Increased efficiency due to variable flow and piston motor technology
Fan speed independent of engine speed
Fails to full fan speed
Motor speed sensors available
Higher motor pressure, power and life ratings
Less engine power consumption
Critical considerations
Back pressure required for axial piston motors
No ZERO speed capability
Larger reservoir capacity required for high flows
Motor thrust load capability must be calculated
Engineered for power, space, and performance
The Danfoss Reverse Displacement Motor (RDM) is a breakthrough in technological innovation and engineering.
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PLUS+1® MC microcontrollersOur powerful PLUS+1® microcontrollers bring intelligence to every node of a distributed control system. And they are equally effective for stand-alone control in smaller machines.
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PLUS+1® input/output modulesExpand the capabilities of your vehicle control system with our CAN-based input/output modules. These stackable microcontroller add-ons integrate new control functions smoothly and effectively.
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Closed circuit axial piston motorsWe offer motor ranges with fixed, 2-position and continuously variable displacement controls, including the zero degree option.
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Open circuit reverse displacement motorsDanfoss reverse displacement motor fan drive solution.
Related solutions
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Variable displacement open circuit pump w/ gear motor (non reversing)Danfoss offers a wide range of efficient fan drive systems.
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Variable displacement open circuit pump w/ gear motor (reversing HIC)Danfoss offers a groundbreaking fan drive technologies, such as the variable displacement open circuit pump w/ gear motor (reversing HIC).
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Variable displacement open circuit pump w/ piston motor (non reversing)Danfoss offers a wide range of efficient fan drive systems. Based on your unique cooling needs, we can work with you to design a number of different open circuit and closed circuit fan drive systems to solve your challenges.
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Closed circuit pump w/ gear motor (reversibleDanfoss offers a wide range of efficient fan drive systems. Explore more about the benefits and the critical considerations you need to take into account as you determine the right system for your specific needs.
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Closed circuit pump w/ piston motor (reversible)Danfoss offers a groundbreaking fan drive technologies, such as the closed circuit pump w/ piston motor (reversible).
