Eaton Compressor & Fabrication C-STOV-MC001-E1 - Manual (Page 53)

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 53
Direct Mechanical Link
Torque Generator
In
Out
Input Torque
Gerotor/Geroler
Output Torque
EF
Direct Mechanical Link
Torque Generator
In
Out
Input Torque
Gerotor/Geroler
Output Torque
Standard Open Center
Power Beyond
Torque Generator
Product Description
OUT
IN
AUX
OUT
IN
AUX
217 Series
(Gerotor Unit)
227 Series
(Geroler Unit)
Char-Lynn torque generators
have been completely
redesigned to meet the
needs of the changing
marketplace. These torque
generators provide power
assist for steering,
eliminating the large hand
wheels on gate valves, and
provide powerful rotary
motion with effortless
manual rotary input on
numerous other applications.
Features
Today’s market includes
power steering on electric
lift trucks. Char-Lynn torque
generators have been
designed with features that
greatly improve the
operator’s comfort as well
as the vehicle’s performance.
The increase in port surface
area allows for the additional
port requirement for units
with the following features:
Power Beyond
This version has three ports:
Inlet (IN), Tank (OUT), and
Excess Flow (EF). In the
power beyond configuration,
flow not used for priority
steering exits the EF port
and is available for the
downstream reach function.
Flow used for steering will
exit the (OUT) port to tank,
and cannot be used for
auxiliary functions.
Load Sensing
Char-Lynn load sensing
torque generators use
conventional or load sensing
power supplies to achieve
load sensing steering. The
use of a load sensing torque
generator and a priority
valve in a normal power
steering circuit offers the
following advantages:
• Provides smooth
pressure compensated
steering because load
variations in the
steering circuit do not
affect axle response or
maximum steering rate.
• beyond system
capability by splitting
the system into two
independent circuits.
Only the flow required
by the steering
maneuver goes to the
steering circuit. Flow
not required for steering
is available for use in the
auxiliary circuits.
• because the steering
circuit always has flow
and pressure priority.
Char-Lynn load sensing
torque generators and
priority valves can be used
with open center, closed
center or load sensing
systems. Used either in an
open center system with a
fixed displacement pump or
a closed center system with
a pressure compensated
pump, these torque
generators offer many of the
features of a load sensing
system. Excess flow is
available for auxiliary circuits.