Vehicle suspension system with roll moment distribution control

A suspension system, comprising:

• a front left damper including a first compression chamber and a first rebound chamber;
• a front right damper including a second compression chamber and a second rebound chamber;
• a back left damper including a third compression chamber and a third rebound chamber;
• a back right damper including a fourth compression chamber and a fourth rebound chamber;
• a first hydraulic circuit that fluidly connects said first compression chamber of said front left damper and said second rebound chamber of said front right damper;
• a second hydraulic circuit that fluidly connects said first rebound chamber of said front left damper and said second compression chamber of said front right damper;
• a third hydraulic circuit that fluidly connects said third compression chamber of said back left damper and said fourth rebound chamber of said back right damper;
• a fourth hydraulic circuit that fluidly connects said third rebound chamber of said back left damper and said fourth compression chamber of said back right damper;
• a first longitudinal hydraulic line extending between and fluidly connecting said first and third hydraulic circuits;
• a second longitudinal hydraulic line extending between and fluidly connecting said second and fourth hydraulic circuits;
• a first bi-directional pump that is arranged along and fluidly connected to said first longitudinal hydraulic line, said first bi-directional pump having a first operating mode for pumping hydraulic fluid in a first direction from said first hydraulic circuit to said third hydraulic circuit and a second operating mode for pumping hydraulic fluid in a second direction from said third hydraulic circuit to said first hydraulic circuit;
• a second bi-directional pump that is arranged along and fluidly connected to said second longitudinal hydraulic line, said second bi-directional pump having a third operating mode for pumping hydraulic fluid in a third direction from said second hydraulic circuit to said fourth hydraulic circuit and a fourth operating mode for pumping hydraulic fluid in a fourth direction from said fourth hydraulic circuit to said second hydraulic circuit;
• one or more controllers electrically connected to said first and second bi- directional pumps and programmed to concurrently or independently activate at least one of said first and second operating modes of said first bi-directional pump and at least one of said third and fourth operating modes of said second bi-directional pump;
• a front left bridge line that extends between and fluidly connects said first and second hydraulic circuits;
• a front left shut-off valve that is positioned in said front left bridge line;
• a front right bridge line that extends between and fluidly connects said first and second hydraulic circuits;
• a front right shut-off valve that is positioned in said front right bridge line;
• a back left bridge line that extends between and fluidly connects said third and fourth hydraulic circuits;
• a back left shut-off valve that is positioned in said back left bridge line;
• a back right bridge line that extends between and fluidly connects said third and fourth hydraulic circuits;
• and
• a back right shut-off valve that is positioned in said back right bridge line,
• wherein said front left shut-off valve, said front right shut-off valve, said back left shut-off valve, and said back right shut-off valve are two position electro-mechanical valves, each having a fully open position and a fully closed position.

A suspension system, comprising:

• a front left damper including a first compression chamber and a first rebound chamber;
• a front right damper including a second compression chamber and a second rebound chamber;
• a back left damper including a third compression chamber and a third rebound chamber;
• a back right damper including a fourth compression chamber and a fourth rebound chamber;
• a first hydraulic circuit that fluidly connects said first compression chamber of said front left damper and said second rebound chamber of said front right damper;
• a second hydraulic circuit that fluidly connects said first rebound chamber of said front left damper and said second compression chamber of said front right damper;
• a third hydraulic circuit that fluidly connects said third compression chamber of said back left damper and said fourth rebound chamber of said back right damper;
• a fourth hydraulic circuit that fluidly connects said third rebound chamber of said back left damper and said fourth compression chamber of said back right damper;
• a first longitudinal hydraulic line extending between and fluidly connecting said first and third hydraulic circuits;
• a second longitudinal hydraulic line extending between and fluidly connecting said second and fourth hydraulic circuits;
• a reservoir that is arranged in fluid communication with at least one of said first and second longitudinal hydraulic lines;
• a first bi-directional pump that is arranged along and fluidly connected to said first longitudinal hydraulic line, said first bi-directional pump having a first operating mode for pumping hydraulic fluid in a first direction from said first hydraulic circuit to said third hydraulic circuit and a second operating mode for pumping hydraulic fluid in a second direction from said third hydraulic circuit to said first hydraulic circuit;
• a second bi-directional pump that is arranged along and fluidly connected to said second longitudinal hydraulic line, said second bi-directional pump having a third operating mode for pumping hydraulic fluid in a third direction from said second hydraulic circuit to said fourth hydraulic circuit and a fourth operating mode for pumping hydraulic fluid in a fourth direction from said fourth hydraulic circuit to said second hydraulic circuit;
• and
• a third bi-directional pump that is arranged between and fluidly connected to said reservoir and at least one of said first and second longitudinal hydraulic lines, said third bi-directional pump having a fifth operating mode for pumping hydraulic fluid in a fifth direction from said reservoir to at least one of said first and second longitudinal hydraulic lines and a sixth operating mode for pumping hydraulic fluid in a sixth direction from at least one of said first and second longitudinal hydraulic lines to said reservoir.