Electronically controlled Visco® coupling improves engine cooling and helps to comply with the Euro 5 and 6 emission standards
Schwäbisch Hall, June 2010. The new Visco® coupling developed by thermo management experts Behr Hella Service now ensures map-controlled and electronic regulation of the fan. This enables the more stringent engine cooling requirements to be met for ensuring compliance with the Euro 5 and 6 emission standards.
The controllability and the dynamic behaviour of the Visco® coupling have been significantly improved. It now transmits 40% more torque although the exterior dimensions have remained virtually the same. The retarder function has been considerably improved by ensuring that the fan switches on as soon as the braking phase commences. The fan is activated more precisely than was previously the case to cope with the respective cooling requirements. This process also completely eliminates any unnecessary fan noise. The fan hub has been optimally adapted to the Visco® coupling: Flow distributors and stabilisers ensure that the inflowing radiator air is channelled through the cooling ribs and fed smoothly into the throughflow of the fan vanes. This process produces better cooling of the silicone oil in the Visco® coupling and improved permissible slip performance, which is especially important for the high loads in commercial vehicles. Anyone who is interested can find more information about the structure, function, functional testing and impacts in the case of malfunctions in a "Technical Information" on the Hella Aftermarket Club online portal.
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Behr Hella Service GmbH, Schwäbisch Hall: The joint venture by the automotive suppliers Behr (specialist for vehicle air conditioning and engine cooling) and Hella (specialist for components and systems for lighting technology and electronics) deals with the global independent aftermarket for vehicle air conditioning and engine cooling. The joint venture combines Behr Service activities on the independent aftermarket and the air-conditioning sector of the Hella aftermarket organization. Behr and Hella each have a 50% share in the joint venture. The combination of Hella's global sales organisation with Behr's product know-how and the linking of activities in the field of vehicle air conditioning and engine cooling for the parts business is a consistent further development of the already existing cooperation between Behr and Hella in the field of climate control and front-end modules.
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