Presentation of the working group „GRRF ECE R55“

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Presentation transcript:

Presentation of the working group „GRRF ECE R55“ Informal document No. GRRF-62-06 (62nd GRRF, 25-28 September 2007, agenda item 5.) Presentation of the working group „GRRF ECE R55“ Situation of september 2007 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Structure of the presentation: Summary of presentation to GRRF January 2006 Agreements of Working group „ECE R55“ Remaining working items first of presenting the proposal to GRRF Items initially excluded from the proposal 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Summary of presentation to GRRF in January 2006 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Proposal CARLOS TC: – Level­Crossing Histograms for Longitudinal­, Lateral­and Vertical Load 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Agreements of the working group Including last meeting in May 2007 The working group agreed on Load Intensity Values (LIV) related to D-values (see red lines on the next 3 pages) 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Remaining working items first of presenting the proposal to GRRF Should the test be performed on rigid test bench or on vehicle or both permitted? How to distribute the test control data. Is the phase-relationship of the test forces necessary? What are the requirements on a test laboratory? What are the failure criteria? 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Should the test be performed on rigid test bench or on vehicle or both permitted? The opinion of the working group in tendency is to just test on a rigid test bench, tests on vehicles should be allowed. 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices The forces to apply during the 3-dimension will build a load spectrum. The working group still has to elaborate: How can the necessary test control data of the load spectrum be published? For example ASCII code on GRRF-website? 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices The working group still has to verify, if in reality the phase-relationship of the forces in all 3 dimensions is important 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices In the case this supplement LIV directions / relations are validated to be necessary, the procedure must respect the phase-relationship of the force-applications in every direction. 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices What are the requirements on the test benches, the test bench control and on the documentation ? 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Failure criteria (crack indication, funktion) as described in ECE R55.01 are not sufficient Additional failure criteria (for example play/clearance) are to define by the working group! 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Items initially excluded from the proposal Following Considerations will not be included into relating amendment to ECE R55 for the first time, but in a later amendment with collected gaining experience 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Application on Light duty trucks, Bicycle – and Load carriers actually excluded from the proposal 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Coupling devices made of other materials than steel as Light Alloy or Composite actually excluded from the proposal 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices The verification of Miss-use / overloads / impacts additional forces caused by stabilizers and else actually excluded from the proposal 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices The working group will need more sessions as previewed, a modified TOR will be presented to next GRRF 21.09.2007 working group on ECE R55 coupling devices

working group on ECE R55 coupling devices Thank You for attention 21.09.2007 working group on ECE R55 coupling devices