Height control system for automotive vehicle with vehicular profile regulating feature

A hydropneumatic suspension system facilitated with a height control system for an automotive vehicle comprising:

• first and second suspension assemblies arranged at different positions of a vehicle body;
• first and second height adjusting means, respectively associated with said first and second suspension assemblies and comprising first and second pneumatic chambers connected to a common pneumatic pressure source via first and second pressure control valve units, for adjusting a first height at a first position of the vehicle body where said first suspension assembly is arranged and a second height at a second position of the vehicle body where said second suspension assembly is arranged;
• first and second vehicle height sensors for monitoring said first and second heights at said first and second positions for producing first and second vehicle height indicative signals;
• a height adjusting means for comparing said first and second vehicle height indicative signals with upper and lower thresholds respectively representative of upper and lower criteria of a target vehicle height range which is set with respect to a standard height, to output first and second height control signals to said first and second height adjusting means for adjusting said first and second heights within said target height range;
• and
• a vehicular attitude regulating means, active when both of said first and second heights are within said target height range, for deriving first and second height differences between said first and second heights and said standard height and a third difference between said first and second height differences, said vehicle attitude regulating means comparing said third difference with a given value which corresponds the possible maximum height difference in a given acceptable height balance range defined with respect to said standard height by an upper balance criterion and a lower balance criterion, and to output an attitude adjusting signal to at least one of said first and second height adjusting means to adjust a corresponding one of said first and second heights so as to maintain said height difference between said first and second heights within said given acceptable height balance range.

An attitude control system for an automotive suspension system comprising:

• first and second suspension assemblies arranged at different positions of a vehicle body;
• first and second height adjusting means, respectively associated with said first and second suspension assemblies and comprising first and second pneumatic chambers connected to a common pneumatic pressure source via first and second pressure control valve units, for adjusting a first height at a first position of the vehicle body where said first suspension assembly is arranged and a second height at a second position of the vehicle body where said second suspension assembly is arranged;
• first means for detecting at least one of said first and second heights being out of a predetermined range defined by upper and lower criterion and sending commands to a corresponding one of said first and second adjusting means so as to maintain said first and second heights within said predetermined height range;
• and
• second means for monitoring height balance between said first and second positions and sending a balance control signal to at least one of said first and second height adjusting means for maintaining said height balance within a predetermined balance range.

An anti-rolling control system for an automotive suspension system comprising:

• a first and a second suspension assemblies arranged at laterally offset positions of a vehicle body;
• first and second height adjusting means, respectively associated with said first and second suspension assemblies and comprising first and second pneumatic chambers connected to a common pneumatic pressure source via first and second pressure control valve units, for adjusting a first height at a first position of the vehicle body where said first suspension assembly is arranged and a second height at a second position of the vehicle body where said second suspension assembly is arranged;
• first means for detecting at least one of said first and second heights being out of a predetermined range defined by upper and lower criterion for sending commands to a corresponding one of said first and second adjusting means so as to maintain said first and second heights within said predetermined height range;
• and
• second means for monitoring height balance between said first and second positions and sending a balance control signal to at least one of said first and second height adjusting means for maintaining said height balance within a predetermined balance range.

An anti-pitching control system for an automotive suspension system comprising:

• first and second suspension assemblies arranged at longitudinally offset positions of a vehicle body;
• first and second height adjusting means, respectively associated with said first and second suspension assemblies and comprising first and second pneumatic chambers connected to a common pneumatic pressure source via first and second pressure control valve units, for adjusting a first height at a first position of the vehicle body where said first suspension assembly is arranged and a height at a second position of the vehicle body where said second suspension assembly is arranged;
• first means for detecting at least one of said first and second heights being out of a predetermined range defined by upper and lower criterion for sending commands to a corresponding one of said first and second adjusting means so as to maintain said first and second heights within said predetermined height range;
• and
• second means for monitoring height balance between said first and second positions and sending a balance control signal to at least one of said first and second height adjusting means for maintaining said height balance within a predetermined balance range.

A vehicular attitude regulating system for an automotive suspension system comprising;

• first and second suspension assemblies arranged at laterally and longitudinally offset positions of a vehicle body;
• first and second height adjusting means, respectively associated with said first and second suspension assemblies and comprising first and second pneumatic chambers connected to a common pneumatic pressure source via first and second pressure control valve units, for adjusting a first height at a first position of the vehicle body where said first suspension assembly is arranged and a second height at a second position of the vehicle body where said second suspension assembly is arranged;
• first means for detecting at least one of said first and second heights being out of a predetermined range defined by upper and lower criterion and sending commands to a corresponding one of said first and second adjusting means so as to maintain said first and second heights within said predetermined height range;
• and
• second means for monitoring height balance between said first and second position and sending a balance control signal to at least one of said first and second height adjusting means for maintaining said height balance within a predetermined balance range.