GME 8716-2007 Intrusion Protection of Tank Vent System (English Includes Appendix A This specification may be applied only for current projects incl Global Epsilon e (37##) It is Sd .pdf
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1、Test ProcedureRoad GME8716Intrusion Protection of Tank Vent SystemNote: This specification may be applied only for current projects incl. Global Epsilon (37#). It isSuperceded for all future projects and replaced by GMW14510 and GMW14547.1 IntroductionNote: Nothinginthisstandardsupersedesapplicablel
2、aws and regulations.Note: In the event of a conflict between the Eng-lish and the domestic language, the English languageshall take precedence.1.1 Purpose. To evaluate Intrusion Protection,depending on the design to decide witch kind ofintrusion to perform:Water IntrusionDust IntrusionSnow Intrusion
3、1.2 Foreword. Not applicable.1.3 Applicability. For all passenger cars.1.4 Definitions.Intrusion: Water, dust, snowthatissuckedintothetank venting system2 ReferencesNote: Only the latest approved standards are appli-cable unless otherwise specified.2.1 External Standards/Specifications.SAE 9300182.2
4、 GM Group Standards/Specifications. None.2.3 Additional References. PT Guideline 203 Resources3.1 Facilities.3.1.1 Water Intrusion.3.1.1.1 Water through (25 m, up to 0.3 m deep).3.1.1.2 Wet road (total length 200 km).3.1.2 Dust Intrusion. Dust-covered track (totallength 200 km).3.1.3 Snow Intrusion.
5、 Snow-covered track (totallength 200 km).3.2 Equipment.3.2.1 Two vacuum pumps (the desired flow to bereached by adjusting the voltage to the pump).3.2.2 Air flow meter (0.60) l/min.3.2.3 Water trap.3.2.4 Two dust traps incl. air filter capable of filteringdown to 5 micron particles (like diesel fuel
6、 filter).3.2.5 Lead car.3.2.6 Weight scale up to 5000 g.3.2.7 Equipment to measure pressure in tank andlines.3.2.8 Camera (dust, snow).3.3 Test Vehicle / Test Piece. A production intentvehicle is recommended, to be set to curb mass andspecified heights.3.4 Test Time. Not applicable.3.5 Test Required
7、 Information. Not applicable.3.6 Personnel / Skills. Not applicable.4 Procedure4.1 Preparation.4.1.1 Flooded Road.4.1.1.1 Install water trap between atmosphere tankventilate and tank (diesel) or atmosphere tank venti-late and carbon canister or instead of carbon canister(gasoline).4.1.1.2 Install th
8、e vacuum pump after the water trap.4.1.1.3 Ensure that water can not enter tank ventintake, engine air intake and purge line (gasoline).4.1.1.4 Ensure carbon canister purge rate of 30 l/min(gasoline), or 2 l/min (Diesel). Copyright 2007 General Motors Corporation All Rights ReservedPublication Depar
9、tment: GME Specification CenterMay 2007 - Issue No. 2 Page 1 of 4PRD045 - VPRE ST 1 10/03GME8716 GM EUROPE ENGINEERING STANDARDS4.1.2 Water Spray.4.1.2.1 Install water trap between atmosphere tankventilate and tank (diesel) or atmosphere tank venti-late and carbon canister or instead of carbon canis
10、ter(gasoline).4.1.2.2 Install the vacuum pump after the water trap.4.1.2.3 Ensure that water can not enter tank ventintake, engine air intake and purge line.4.1.2.4 Ensure carbon canister purge rate of 30 l/min(gasoline), or 2 l/min (Diesel).4.1.2.5 Installreference tube(diameter=12mm)anda water tra
11、p in front of vehicle (see Figure 1).4.1.2.6 Install the vacuum pump after the referencewater trap.4.1.2.7 Ensure reference flow rate of 50 l/min.4.1.3 Dust Intrusion.4.1.3.1 Install dust trap incl. air filter between atmos-phere Tank ventilate andTank (Diesel) or atmosphereTank ventilate and carbon
12、 canister or instead of car-bon canister (gasoline).4.1.3.2 Install the vacuum pump after the dust trap.4.1.3.3 Install safe replacement tank vent and closepurge line (gasoline).4.1.3.4 Ensure carbon canister purge rate of 30 l/min(gasoline), or 2 l/min (Diesel).4.1.3.5 Install reference tube ( = 12
13、 mm) with dusttrap incl. air filter in front of vehicle (see Figure 1).4.1.3.6 Install the vacuum pump after the dust trap.4.1.3.7 Ensure reference flow rate of 50 l/min.4.1.3.8 Preconditioning both air filter (see Note).4.1.3.9 Afterthe preconditioningbothairfiltershallbeweighed.Note: Filters shall
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