Combined spring and shock absorber system including a hydraulic accumulator
AssigneeDaimlerChrysler AG
InventorHelmut Luncz
Life of this patent
Estimating the term…
Abstract
In a combined spring and shock absorber system for a wheel suspension of a vehicle comprising tubular rolling bellows arranged between a wheel-support structure and a vehicle body the bellows includes a space filled with a fluid in communication with a hydraulic accumulator. The bellows space is also in communication with at least one additional hydraulic accumulator via a throttle passage and via at least one pre-set differential pressure-control valve ensuring that threshold values for the internal pressure in the tubular rolling bellows are not exceeded in the event of high spring-extension and/or spring-compression speeds.
Claims6
A combined spring and shock absorber system for wheel suspensions employing a tubular rolling bellows arranged between a wheel-support structure and a vehicle-body-end attachment, said bellows enclosing a space (5) filled with an incompressible fluid, a first hydraulic accumulator (50) in communication with said bellows space (5), and at least one addtional hydraulic accumulator (60) in communication with said bellows space (5) via a throttle passage (67) and via at least one pre-set differential-pressure-control valve (70), said differential-pressure-control valve (70) being in communication with said bellows space (5) so as to open when the pressure in the bellows space (5) drops below a pre-set threshold value.
Dependencies are inferred from the claim text.