Suspension system with variable damping

A system for varying the damping of a suspension system for a work vehicle, comprising:

• a first cylinder having a piston side and a rod side, the first cylinder connected between a chassis and an axle assembly on a right side of the work vehicle;
• a second cylinder having a piston side and a rod side, the second cylinder connected between the chassis and the axle assembly on a left side of the work vehicle;
• a first proportional valve having a first position allowing flow between one or more accumulators, the piston side of the first cylinder, and the piston side of the second cylinder, and a second position preventing flow between the one or more accumulators, the piston side of the first cylinder, and the piston side of the second cylinder;
• a second proportional valve having a first position allowing flow between a first accumulator and the piston side of the first cylinder and allowing flow between a second accumulator and the piston side of the second cylinder, and a second position preventing flow between the first accumulator and the piston side of the first cylinder and preventing flow between the second accumulator and the piston side of the second cylinder;
• and
• a controller configured to vary the damping of the suspension system by adjusting pilot pressure provided to the first and second proportional valves.