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Construction machine with automatic fan rotational speed regulation

  • US 9,670,930 B2
  • Filed: 10/09/2012
  • Issued: 06/06/2017
  • Est. Priority Date: 10/07/2011
  • Status: Active Grant
First Claim
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1. Road paver or feeder with automatic fan rotational speed regulation comprising a drive unit, a control unit configured for the purpose of registering operation-specific data and, a cooling unit that comprises at least one fan in order to produce a cooling airflow wherein the cooling unit comprises at least one regulatable electric motor that is functionally connected to the at least one fan, the electric motor not being coupled with the drive unit,the control unit being configured for the purpose of regulating based on specific operating data of the road paver or feeder an electric output of the respective electric motor in order to adjust a desired target fan rotational speed on the at least one fan and wherein the control unit comprises an instrument that is formed for the purpose of registering a load factor and/or a rotational speed of the drive unit by means of the operation-specific data and subjecting the load factor and/or rotational speed of the drive unit registered by means of the control unit to averaging, wherein the control unit comprises a plurality of mappings which are provided for determining the target fan rotational speed, wherein based on the rotational speed of the drive unit, the control unit is configured for the purpose of selecting a predetermined mapping among the plurality of mappings in order to determine the target fan rotational speed,and wherein the selected mapping determines the target fan rotational speed in light of the load factor of the drive unit and in light of the ambient temperature.

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