Abstract: A vehicle comfort system having a vehicle seat with one or more fluid-fillable bladders, a control system and, for each bladder, at least one valve controlled by the control system by PWM signals. The control system controls the filling or emptying of the bladder(s) according to program information by opening a valve according to the program information by a PWM signal within a time interval so that a fluid flows into the associated bladder and the internal pressure of the bladder is increased to an upper setpoint. The fluid can escape from the bladder and the internal pressure within the bladder can be decreased to a lower setpoint. Within the time interval, the control system opens and closes a valve associated with a bladder, in an oscillating manner by at least one sequence of PWM signal pulses, which are preferably short in duration compared to the time interval.

Abstract: A module support arrangement for attachment to the seat structure of a motor vehicle seat and for fixing pneumatic components or non-pneumatic components includes a module support with a front side and a rear side opposite the front side and optionally at least one further component. Air ducts and/or air duct sections are integrated into the module support and/or into the at least one further component. At least one of the air ducts or air duct sections has, at least locally, a change in the cross-sectional area.

Abstract: A module support arrangement for attachment to the seat structure of a motor vehicle seat and for fixing pneumatic components or non-pneumatic components has a module support with a front side and a rear side opposite the front side. Optionally, the module support arrangement has at least one further component, wherein air ducts and/or air duct sections are integrated in the module support and/or in the at least one further component. At least one pressure accumulator that is in fluidic communication with at least one of the air ducts or air duct sections is integrated on or in the module support and/or on or in the further component.