SCI Satloc GPSteer, Руководство пользователя

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2004, Satloc LLC
Page 4 | GPSteer User Guide
Selecting the Correct Installation for Your Hydraulic
Steering System
Your hydraulic steering system may be one of two types: closed
center or open center.
A closed-center hydraulic steering system allows the tractor to
handle pressure build-up in the steering system. This means that
there can be blockages in the line or changes in pressure and the
pump will compensate.
In this system, oil does not run through the steering unit when the
steering is in neutral (not turned to the left or right). A Load Sense
line and a pressure-compensated pump compensate for any
resulting pressure inconsistencies.
This type of system is most commonly found on medium to large
tractors and sprayers. Closed-center systems typically offer an
advantage for systems that come with multiple hydraulic system
options. They allow you to tie into the hydraulic system without
worrying about pressure inconsistencies.
An open-center hydraulic system does not have a pressure
compensated pump and valve to handle pressure inconsistencies.
In this system, oil runs through the steering unit when the steering
is in neutral. This results in pressure being constant with no need
for a pressure compensation mechanism.
This type of system is most commonly found on small to medium
sized tractors and sprayers. Open-center systems typically offer an
advantage because they are highly efficient and cost effective.
GPSteer Installation Guide.book Page 4 Thursday, June 17, 2004 10:51 AM