New Visco® coupling from Behr Hella Service reduces exhaust gases
Electronically controlled Visco® coupling improves engine cooling and helps
to comply with the Euro 5 and 6 emission standards
Article of 07.06.2010
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.
|
He_Pr_e_070610.rtf