Method for adjusting the amount of air in a closed air supply system for a chassis
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United States of America Patent
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-
Dec 1, 2009
Grant Date -
Oct 4, 2007
app pub date -
Apr 25, 2005
filing date -
May 19, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In order to avoid pressure and volume compensation as much as possible during measurement of the pressures of air spring units, the pressure in the air spring units (5, 6, 7, 8) is estimated prior to measurement of the pressures of the air spring units (5, 6, 7, 8) and is compared to the pressure in the air pressure accumulator (3). The higher of the two pressures determines the position of a 3/2 directional control valve (11) which separates the collector line (25) connecting all air spring units (5, 6, 7, 8) from the air pressure accumulator (3) or which connects it to as small a chamber volume of the supply system as possible.
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