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    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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    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

    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

    14、 be preconditioned right before thetest with a flow rate of 50 l/min for 30 min.4.1.4 Snow Intrusion.4.1.4.1 Weigh and record empty carbon canister andhoses. Install carbon canister and hose.4.1.4.2 Installthevacuumpumpafterthecarboncan-ister and hose.4.1.4.3 Install safe replacement tank vent and c

    15、losepurge line.4.1.4.4 Ensure carbon canister purge rate of 30 l/min(gasoline), or 2 l/min (Diesel).4.2 Conditions.4.2.1 Environmental Conditions.4.2.1.1 Water Spray. Road shall be as wet that carsproduce spray clouds during driving.4.2.1.2 Dust. Track shall be dusty and dry that carsproduce dust cl

    16、ouds during driving.4.2.1.3 Snow. Track shall have a minimum of 5 cmof accumulated snow. Snowing conditions shall bepowdery snow.4.2.2 Test Conditions. Deviations from the require-ments of the test procedures shall have been agreedupon. Such requirements shall be specified on com-ponent drawings, te

    17、st certificates, reports etc.4.3 Instructions.4.3.1 Water Intrusion Prevention.4.3.1.1 Flooded Road.a Adjust water depthb Activate vacuum pump at:30 l/min2 l/min for Dieselc Cross the waterd Inspect water trap, measure and record contentafter every driving throughe Cross the water with following dep

    18、ths andspeeds:Water depths Speed5 cm 60 km/h20 km/h10 cm40 km/h20 km/h15 cm40 km/h20 km/h22 cm40 km/h30 cm 20 km/hf Enter water through at 30 km/h and 30 cm depth.When reaching the middle, reverse and leave theWater through as fast as possible.4.3.1.2 Water Spray due to Wet Road.a Activate vacuum pu

    19、mp at 30 l/min (Diesel: 2 l/min)b Activate reference vacuum pump at 50 l/minc Drive 200 km at (80.120) km/h in the spray cloudbehind a lead car on a rain-wet road Copyright 2007 General Motors Corporation All Rights ReservedPage 2 of 4 Issue No. 2 - May 2007PRD045 - VPRE ST G 10/03GM EUROPE ENGINEER

    20、ING STANDARDS GME8716d Record amount of water in water trape Record amount of water in reference water trapf Measure collected water4.3.2 Dust Intrusion.a Activate vacuum pump at 30 l/min (Diesel: 2 l/min)b Activate front tube vacuum pump at 50 l/minc Drive 200 km at (60.80) km/h in the dust cloudbe

    21、hind a lead car on a dust trackd Inspect both, front tube - and canister substitution- air filters, and measure contente Calculate the Pollution (see paragraph 5.1)4.3.3 Snow Intrusion.a Activate vacuum pump at 30 l/min(Diesel: 2 l/min).b Drive 200 km at (60.80) km/h in the snow cloudbehind a lead c

    22、ar on a snow-covered track.c Record pressure between vacuum pump andcarbon canister to evaluate blockage due to snowaccumulation.d Take a visual check. Inspect snow trap.e Melt the snow and measure the water.5 Data5.1 Calculations.Life Time Pollution (Dust)See SAE 930018 or PT Guideline 20 and compa

    23、reresults.Calculating formula :mass canister / mass reference point = 20 %5.2 Interpretation of Results. To evaluate if resultsare in accordance with requirements in specification(SSTS).5.3 Test Documentation. The test results shall beadded to a test report with reference to this Test Pro-cedure.6 S

    24、afetyThisstandard mayinvolvehazardousmaterials, oper-ations and equipment. This standard does not pro-pose toadress allthesafetyproblemsassociatedwithits use. It is the responsibility of user of this stan-dard to establish appropriate safety and health prac-tices and determine the applicability of r

    25、egulatory lim-itations prior to use.7 Coding SystemThis standard shall be called up in other documents,drawings, VTS, CTS etc. as follows:Example: “GME8716”8 Release and Revisions8.1 Release. This standard was first approved andreleased on 18/JUL/2005.Content Owner: ITDC PE Thermal and Fuel Systems/

    26、 Saab Th Saab)2 MAY 2007 set to Superseded (GME Engi-neering) Copyright 2007 General Motors Corporation All Rights ReservedMay 2007 - Issue No. 2 Page 3 of 4PRD045 - VPRE ST U 10/03GME8716 GM EUROPE ENGINEERING STANDARDSAppendixAFigure1:DustIntrusionTrailingDust Copyright 2007 General Motors Corporation All Rights ReservedPage 4 of 4 Issue No. 2 - May 2007PRD045 - VPRE ST G 10/03


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