TPM Valve Enveloppe proposal - PowerPoint PPT Presentation

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TPM Valve Enveloppe proposal

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This proposal recommend most of the dimensions of the TPM enveloppe, rather than ... Recommend a gap between enveloppe and rim for rigid solutions, no dimension shown ... – PowerPoint PPT presentation

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Title: TPM Valve Enveloppe proposal


1
  • 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)

2
  • 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

3
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.

4
  • 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

5
(No Transcript)
6
(No Transcript)
7
  • Grommet Components

8
  • Nut Components

9
  • Rim hole environment
  • See proposal of working group 10.
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