Patent ID: 6556907
Filing Date: 2003-04-29
Classification: B60G

Abstract:
A vehicle suspension system comprising a first damper and a second damper, said first damper and said second damper being interrelated, said first damper comprising a first piston and a first cylinder body, a first cylinder bore being defined by said first cylinder body, said first piston arranged to reciprocate within said first cylinder bore, said first piston having a first effective area a1, said first damper extending between a first wheel and a vehicle body, said second damper comprising a second piston and a second cylinder body, a second cylinder bore being defined by said second cylinder body, said second piston being arranged to reciprocate within said second cylinder bore, said second piston having a second effective area a2, said second damper extending between a second wheel and said vehicle body, a first chamber being defined within said first cylinder body at least in part by said first piston, a second chamber being defined within said second cylinder body at least in part by said second piston, a first pressure regulating cylinder being in fluid communication with said first chamber and a second pressure regulating cylinder being in fluid communication with said second chamber, said first pressure regulating cylinder comprising a first variable volume chamber and said second pressure regulating cylinder comprising a second variable volume chamber, said first variable volume chamber and said second variable volume chamber being defined at least in part by a single moveable member, said single moveable member having a first subarea A1 that corresponds to said first variable volume chamber and a second subarea A2 that corresponds to said second variable volume chamber, a bypass passage extending between said first variable volume chamber and said second variable volume chamber and a first throttle valve and a second throttle valve being positioned within said bypass passage, said suspension system being configured such that (S1Î»1)Ã—(a1A1)=(S2Î»2)Ã—(a2A2),wherein S1 and S2 are a piston travel of said first piston and said second piston respectively and &lgr;1 and &lgr;2 are the travel of said first wheel and said second wheel respectively and wherein a1 is not the same as a2 or S1/&lgr;1 is not the same as S2/&lgr;2.