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Horton 'Next Generation' Cooling System Concept Enters Test Phase

30 June 1997

Horton 'Next Generation' Cooling System Concept Enters Test Phase

    MINNEAPOLIS, June 30 -- The Adaptive Control System (ACS(TM))
from Horton will be tested this summer in over-the-road trucks.  The ACS is
designed to provide multiple air flows for improved cooling without a clutch.
Testing will prove the durability of the prototype ACS, as well as provide
data about the expected benefits of this new concept in cooling technology.
    The ACS combines next generation electronic controls with a variable pitch
fan drive.  This creates a system approach which makes improved cooling
possible.  The variable pitch blade design offers the first opportunity to
effectively translate precise information from numerous vehicle inputs and
provide the exact air flow required with one of a number of blade pitches.
    The ACS has the potential of providing a number of benefits.  Combining
the drive hub and fan offers reduced weight.  The current design should reduce
fan drive system maintenance.  In addition, if the fan drive loses compressed
air the blades move to the full-on position, making it "fail-safe."
    Drivers will appreciate the fact that the ACS will create less noise in
the cab/sleeper.  This is because the smooth transition from the off mode of
the ACS to a low air flow mode will replace the engagement/disengagement of
on/off clutches.  Improved belt life is also expected because of this smooth
transition from one fan pitch to the next, eliminating torque spikes which can
stress belts.
    The new ACS fan drive will work as an on/off drive with today's standard
controls.  When the ACS fan drive becomes available, it will provide vehicles
with standard controls many benefits previously mentioned which are not
available with current on/off fan clutches.
    Horton, Inc. is a leading manufacturer of motion control systems for
industrial applications; engine cooling systems and other components for
diesel-powered vehicles; and web control systems for printing and conversion
of paper, film, foil and fabrics.  The privately held firm has been based in
Minneapolis for over 40 years with international operations based in Belgium,
Japan, Mexico and Australia.

SOURCE  Horton Inc.