Eaton Compressor & Fabrication CONFERENCE SYSTEM SDC 8200 - Manual (Page 10)

10 Eaton Electro-hydraulic Fan Drive System E-SYFD-MROO1-E3 October 2008
Engineered
Systems
Other electro-hydraulic
systems for steering,
work circuit and fan drive
applications.
Electro-hydraulic Steer By
Wire (EH-SBW)
EH-SBW is a new technology
steering system for vehicles
where an electronic sensor
replaces the rotary steering
valve of a traditional hydraulic
steering system. An electrical
signal, rather than mechanical
or fluid connections, trans-
fers the steering command
from the operator’s steering
wheel to the steered wheel
electrohydraulic actuator.
The Eaton system includes a
novel tactile feedback device
at the steering wheel that
simulates the feel of conven-
tional hydrostatic steering.
Additional Benefits:
• Hydraulic leaks and noise
are reduced.
• Assembly is simplified, pro-
viding greater cab design
flexibility.
• Productivity, safety, and er-
gonomics are all improved.
• The tailoring of steering
characteristics by re-pro-
gramming is simplified.
Electro-hydraulic Work
Circuits
An electronic remote control
joystick replaces the hydraulic
remote control, cables and
levers of a traditional work
circuit operator interface. An
electrical signal, rather than
mechanical or fluid connec-
tions, transfers the boom,
bucket or implement com-
mand from the operator’s
joystick to an electro-hydrau-
lic directional control valve.
Other work circuit applica-
tions include control of aux-
iliary motors, power take-off
clutches, and transmissions.
Additional Benefits:
• The work circuit control is
more accurate and stable.
• Hydraulic noise and leaks in
the cab are reduced.
• Hydraulic connections are
eliminated or simplified.
• Vehicle energy manage-
ment is improved.
The Electronic Transmission
Automotive Control (ETAC)
ETAC system is a hydrostatic
propulsion package ideally
suited for small to medium
sized fork lift trucks, tractors
and utility vehicles. ETAC
matches engine power to the
vehicle propulsion and work
requirement. The “Maestro”
digital, programmable con-
troller is integrated with the
throttle system as well as a
closed circuit hydraulic pump
and motor. Maestro drives a
high performance electrohy-
draulic interface on the pump
and uses a swashplate sen-
sor to provide precise, closed
loop control.
Additional Benefits:
• Consistent performance
over a wide range of oper-
ating temperatures.
• Hydrostatic braking is ad-
justable through software.
• Inching function maximizes
productivity by allowing the
operator to regulate work
circuit pump flow indepen-
dently of vehicle speed.
• Anti-stall enables use of
available engine power
by automatically reducing
pump displacement.
• Adjustment of software pa-
rameters allows new opera-
tors to operate the vehicle
with the same productivity
as skilled drivers.