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DSM in Automotive

Things to know about the tool

The tool calculates the benefit of replacing all polyamide 66 slide shoes in the geometry presented by Stanyl slide shoes. The three critical values listed at the top are (from left to right):
  • The reduction of power loss in the timing system in Watts.
  • The reduction in CO2 emission in grams CO2/km.
  • The reduction of the corresponding emission penalty in € per engine.

The assumptions made to create these values are based on our experience of working with relevant players in the market.

What typical input is needed to perform a calculation?

Choose the relevant timing configuration via the drop-down menu "Timing configuration". From here you’ll see a graphic showing the input fields that need to be completed from a geometrical point of view. The following input fields are shown (in black font) in the graphical configuration:

Per sprocket:

  • The number of teeth on the sprockets (indicated at the center of the sprocket representation by a number).

Per chain tensioner/ guide

  • The average chain tension "S" working on the chain tensioner/guide (average of the minimum and maximum values). Please note that the chain tension is required here (not the force exerted by the hydraulic unit on the tensioner arm).
  • The angle at which the chain has contact with the slide shoe.
  • The average radius of curvature "R" of the tensioner/guide.

After defining the geometry, additional generic parameters are needed. By using the drop-down menu "Generic Parameters" you will see the following parameters ready for entry:

  • Crankshaft RPM value
  • Chain pitch
  • Chain roller/pin friction diameter
  • Friction coefficient rollers (representing the internal friction in the chain roller/pin interface)
  • Total link thickness (representing the thickness/width of the chain surface in contact with the guides).