TPM Valve Enveloppe proposal

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• TPM Valve Enveloppe proposal
• The proposal is built on the comments from
  document ISO/TC31/SC9 N427
• This proposal recommend most of the dimensions of
  the TPM enveloppe, rather than requiring rim
  dimensions
• The TPM enveloppe requirement only give direction
  for drop centre / TPM case size and valve hole
  position, without any requirement on the hole
  itself
• Valve hole requirements shall be compatible with
  what will be reviewed in WG10.The valve hole
  requirements needs to be adapted to the valve
  chosen (to be discussed in WG 10)

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• Main criterias of the proposal
• Spot face depth for alloy rims Show Max
  dimension on enveloppe, not on rim, and show
  potential contact area
• Max length of case is specified for compressed
  seal
• Valve references displayed only in the notesNo
  direct dimension of the valve specified here
• Detail of valve hole environment to be reviewed
  with WG 10. No recommendation on valve hole
  itself is inside this specification.
• Highest point of case to be below the seat (to
  be added inside the notes)
• Recommend a gap between enveloppe and rim for
  rigid solutions, no dimension shown

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TPM Valve Enveloppe

• Notes
• Valve and tyre mounting trials shall be performed
  to confirm compatibility
• Valves CQ 07 to 10, details of the valve hole
  will be specified through WG 10
• The top of the TPM valve shall be below the rim
  specified diameter. This comment is valid for the
  full width of the enveloppe
• Dimensions of the enveloppe for compressed
  sealsThe dimension shall include a gap between
  the drop centre and the TPM device to provide
  correct heat insulation for rigid solutions.Some
  TPM enveloppe can be designed up to 40.5 MAX for
  specific applications Those dimensions covers
  the majority of today production
• In order to fit the larger number of existing
  valves, and help for automated valve assembly
  equipment, dimension (3) is recommended to be
  mean angle 112,5. In case of flexible TPM,
  adapted TPM valve angle or non fixed automated
  assembly valve equipement, this angle may vary
  from proposed dimension. Other angles are
  existing but for new developments prefer mean
  angle 112,5
• Rim dimensions
• Those dimensions gives counterbore maximum depth
  for TPM valve compatibility.

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• Valves to be added to ISO 9413
• Valves note A previous page are to be added as
  valves only (TPM case is an option to the valve),
  and with an optionnal slot if not TPM Valve
• In Annex E, it shall be interesting to explain
  for grommets that torque specified
• Is an initial hand torquing, and that the torque
  will loose with time.
• that grommets normally loose torque with time,
  and it is not necessary to torque again after
  intial hand torquing
• Valve collar on CQ 09 shall be 15 or 16 (2 cases
  exists in the field)
• add comment to check there is not interference
  between valve and rim

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• Grommet Components

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• Nut Components

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• Rim hole environment
• See proposal of working group 10.