Eaton Compressor & Fabrication C-STOV-MC001-E1 - Manual (Page 18)

18 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006
Eaton Patented
Technologies
Wide Angle
Standard Steering on a 25 Ton Loader
Steering Input (RPM)
60 RPM CW
60 RPM CCW
Time (Seconds)
Computer Simulation
Jerk (g/sec)
Jerk (g/sec)
0
4
8
0 1 2 3 4 6
-8
-4
Wide Angle Steering on a 25 Ton Loader
Steering Input (RPM)
60 RPM CW
60 RPM CCW
Time (Seconds)
Jerk (g/sec)
Jerk (g/sec)
0
4
8
0 1 2 3 4 6
-8
-4
125 ms
60 RPM
Flow
Time
Wide Angle Standa
rd
Description
Steering units with wide
angle features have been
developed to significantly
reduce or eliminate the jerky
motion of vehicles with
articulated steering systems.
This has been accomplished
by increasing the maximum
deflection of the spool
relative to the
sleeve. Increasing the
deflection reduces the gain.
This in turn reduces
acceleration and jerk levels
and provides overall
smoother vehicle
performance. The steering
still responds fast enough so
the operator does not notice
the reduced gain.
Benefits
• Minimizes jerking
motion on medium and
large articulated
vehicles.
• Jerk reducing valves and
accumulators can be
eliminated on most
vehicles.
• Avaliable on Series 10,
Series 20 (standard),
and Series 25.
• Eliminates need for
cushion valves
Applications
• Articulated Vehicles
Wide Angle Steering Control Units Patent No. 5080135
These graphs show a computer simulation of the jerk levels and have been verified by
actual vehicle tests.