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System and operating method for level regulation of a driver's cab of a commercial vehicle relative to the chassis of the vehicle

  • US 9,975,582 B2
  • Filed: 05/15/2014
  • Issued: 05/22/2018
  • Est. Priority Date: 05/31/2013
  • Status: Active Grant
First Claim
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1. A system for regulating a level of a driver'"'"'s cab of a commercial vehicle relative to a vehicle chassis, comprising:

  • a spring-loaded bearing for supporting the driver'"'"'s cab on the vehicle chassis, the spring-loaded bearing comprising a plurality of spring elements including pneumatic or hydraulic spring elements, each of the spring elements having a valve for variable supply of the each of the spring elements with a pressure-generating medium, and a supply unit supplying the pressure-generating medium for the spring elements;

    a distance sensor configured to record at least one of relative movements and a distance between the driver'"'"'s cab and the vehicle chassis;

    a distributed control device with regulators disposed on the valves of the spring elements, each of the regulators independently controlling a respective one of the valves of the spring-loaded bearing based on a signal received from the distance sensor;

    wherein the spring-loaded bearing is adjustable to a first height position, where a distance between the driver'"'"'s cab and the vehicle chassis is controlled by the distributed control device to a first target distance, and a second height position, where a distance between the driver'"'"'s cab and the vehicle chassis is controlled by the distributed control device to a second target distance that is different from the first target distance,wherein each of the regulators of the distributed control device receives a signal indicating a measurement value of at least one parameter relating to a driving route of the commercial vehicle and adjusts the respective one of the valves to position the spring-loaded bearing to the first height position or the second height position in response to the measurement value of the at least one parameter, andwherein, if one of the spring elements is not compressed to the adjusted target distance, one of the regulators corresponding to the one of the spring elements controls the level of the pressure medium of the one of the spring elements by the valve disposed on the one of the regulators such that the one of the spring elements is again compressed to the adjusted target distance.

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