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Method and apparatus for calculating work cycle times

  • US 5,955,706 A
  • Filed: 11/26/1997
  • Issued: 09/21/1999
  • Est. Priority Date: 11/26/1997
  • Status: Expired due to Term
First Claim
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1. A method for determining the segments of a work cycle of an wheel loader, said wheel loader having a transmission, a work implement, a lift cylinder connected to said work implement, and a tilt cylinder connected to said work implement, the lift and tilt cylinders each having a rod end and a head end, comprising the steps of:

  • determining a current segment of the work cycle;

    determining one of a lift cylinder head end pressure, a lift cylinder displacement, and a tilt cylinder displacement in response to said current segment;

    determining a direction of travel of said earth moving machine; and

    ,determining a beginning of a next segment of said work cycle in response to said direction of travel, said current segment, and said one of said tilt cylinder displacement, said lift cylinder displacement, and said lift cylinder head end pressure, and wherein said work cycle includes a dig segment, a travel loaded segment, a dump segment, and a travel empty segment.

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