System and Method for Controlling the Axle Load Split Ratio on a Vehicle With Two Front Axles
AssigneeVolvo Lastvagnar AB
InventorsHans Regnell, Benny Liljeblad, Jens Gustafsson
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Abstract
A system is provided for controlling the load split between the axles and thereby the theoretical wheelbase of a vehicle having two front axles being suspended in suspension units at least some of which have springs with adjustable stiffness. A method for controlling the load split between the axles and to a motor vehicle including such a system and/or by use of such a method is also disclosed.
Claims31
A system for controlling a suspension system load split between axles and, thereby, a theoretical wheelbase of a vehicle having two front axles suspended in suspension units at least some of which have springs with adjustable stiffness, the system comprising
- load sensor means arranged to detect one or more load indication parameters from which an individual load on each of the axles can be determined,
- controller means receiving input from the load sensor means and determining settings for stiffness of the springs and
- means for adjusting the load split by setting the stiffness of the springs as determined by the controller means.
A method for controlling a suspension system load split between axles and, thereby, a theoretical wheelbase of a vehicle having two front axles being suspended in suspension units at least some of which have springs with adjustable stiffness, the method comprising the steps of:
- detecting at least one load indication parameter from which an individual load on each of the axles can be determined, and
- determining settings for stiffness of the springs based the at least one load indication parameter, and
- adjusting the load split by setting the stiffness of the springs.
A method according to 25, wherein the theoretical wheelbase is determined as close to a predetermined optimal value as possible while ensuring as even a load split between the axles as possible, and while furthermore ensuring that a predefined maximum allowable load is not exceeded for any of the axles.
A method according to 25, wherein the theoretical wheelbase is determined as close to an assigned optimal value as possible while ensuring a predefined load split between the axles the load split being dependent on the vehicle, and while furthermore ensuring that a maximum allowable load is not exceeded for any of the axles.
Dependencies are inferred from the claim text.