Patent ID: 9168807
Filing Date: 2015-10-27
Classification: B60G

Abstract:
1. A suspension comprising: a valve block comprising a manifold, a crossover valve, and first and second sets of valves; a first set of springs in fluid communication with said first set of valves, wherein said first set of springs comprises a front right spring and a front left spring for a front axle; a second set of springs in fluid communication with said second set of valves, wherein said second set of springs comprises a rear right spring and a rear left spring for a rear axle; and said crossover valve being movable between an open position to allow fluid communication to each of said first and said second sets of springs and a closed position that separates said first set of springs from said second set of springs; wherein fluid communication occurs only between springs in said first set of springs and fluid communication occurs only between springs in said second set of springs when said crossover valve is in said closed position; wherein said first set of valves includes a front right valve controlling fluid communication between said manifold and said front right spring and a front left valve controlling fluid communication between said manifold and said front left spring, wherein fluid communication occurs between said front right spring and said front left spring when said crossover valve is closed and said front right and said front left valves are open; wherein said second set of valves includes a rear right valve controlling fluid communication between said manifold and said rear right spring and a rear left valve controlling fluid communication between said manifold and said rear left spring, wherein fluid communication occurs between said rear right spring and said rear left spring when said crossover valve is closed and said rear right and said rear left valves are open; wherein said front right valve, said front left valve, said rear right valve, and said rear left valve are normally closed and said crossover valve is normally open; and wherein said crossover valve is only activated to move to said closed position when in a four wheel drive low mode.