commiss direct april adapt technic progress council direct eec approxim law member state relat permiss sound level exhaust system motor vehicl eec commiss european commun regard treati establish european econom commun regard council direct eec februari approxim law member state relat type approv motor vehicl trailer amend direct eec articl thereof regard council direct eec februari approxim law member state relat permiss sound level exhaust system motor vehicl amend direct eec articl thereof result experi gain field bear mind present state art amend requir relat method measur nois move stationari vehicl order bring line real oper condit provis articl direct eec exclud modif limit valu procedur adapt technic progress insert inform direct limit valu direct eec plan lower valu due time conform procedur provid matter exhaust system compon thereof market separ spare part check fit vehicl free movement facilit establish eec type approv procedur respect separ system consid separ technic unit mean articl insert direct eec direct eec provis direct accord opinion committe adapt technic progress direct aim remov technic barrier trade motor vehicl sector adopt direct articl direct eec amend articl replac quot articl member state ground relat permiss sound level exhaust system refus grant eec nation type approv respect type motor vehicl type exhaust system compon system regard separ technic unit vehicl satisfi requir annex sound level exhaust system exhaust system compon thereof consid separ technic unit mean articl direct eec satisfi requir annex ii quot articl replac quot articl member state ground relat permiss sound level exhaust system oj oj oj oj oj refus prohibit sale registr entri servic vehicl sound level exhaust system satisfi requir annex member state ground relat permiss sound level exhaust system prohibit place market exhaust system compon thereof consid separ technic unit mean articl direct eec mean articl type respect type approv grant quot articl quot item quot replac quot item annex quot annex replac annex ii iii iv direct articl effect januari member state ground relat permiss sound level exhaust system refus grant eec type approv issu document refer indent articl direct eec grant nation type approv respect type motor vehicl prohibit entri servic vehicl sound level exhaust system type vehicl vehicl concern compli provis direct eec amend present direct effect octob member state longer issu document refer indent articl direct eec respect type motor vehicl sound level exhaust system compli provis direct eec amend present direct refus grant nation type approv respect type motor vehicl sound level exhaust system compli provis direct eec amend present direct effect octob member state prohibit entri servic vehicl sound level exhaust system compli provis direct eec amend present direct articl januari member state appli provis compli direct forthwith inform commiss thereof articl direct address member state brussel april commiss karl heinz narj member commiss annex eec type approv respect sound level type motor vehicl definit type vehicl purpos eec type approv sound level purpos direct quot type vehicl quot mean vehicl differ essenti part shape materi bodywork engin compart soundproof length width vehicl type engin stroke reciproc rotari piston number capac cylind number type carburettor inject system arrang valv rate maximum power engin speed transmiss system number gear ratio number type arrang exhaust system number type arrang intak system exhaust intak system quot exhaust system quot mean complet set part reduc nois produc vehicl engin exhaust quot intak system quot mean complet set part reduc nois produc vehicl engin intak purpos direct system includ manifold type exhaust intak system quot type exhaust intak system quot mean system character fundament differ system bear trade mark trade name system characterist materi compon differ compon shape size chang plate procedur galvan aluminium coat deem produc differ type system oper principl compon differ system compon combin differ compon exhaust intak system quot compon exhaust intak system quot mean separ compon form exhaust system exhaust pipe silenc proper intak system air filter applic eec type approv applic eec type approv respect sound level type motor vehicl submit manufactur vehicl author repres accompani underment document triplic inform descript type vehicl refer point mention item number symbol identifi engin type vehicl type list identif compon part exhaust intak system draw entir exhaust system indic posit vehicl detail draw compon easili locat identifi indic materi vehicl repres type respect type approv sought submit technic servic respons test vehicl manufactur author repres request technic servic specimen exhaust system engin cylind capac rate maximum power fit vehicl respect type approv sought submit mark exhaust intak system compon exclud fix hardwar pipe bear trade mark manufactur system compon manufactur trade descript mark legibl indel eec type approv applic mean item approv compet author draw certif type appear annex iii attach eec vehicl type approv certif specif gener specif vehicl engin exhaust intak system design construct mount normal condit notwithstand vibrat subject vehicl satisfi requir direct system design construct mount reason resist corros phenomena expos obtain regard condit vehicl specif relat sound level method measur sound emit type vehicl submit eec type approv measur accord method item case move vehicl item case stationari vehicl valu measur item record test report certif model shown annex iii sound level move vehicl limit valu sound level measur accord item inclus annex exce limit gt pic file quot quot gt measur instrument acoust measur apparatu measur nois level precis sound level meter type public quot precis sound level meter quot edit intern electrotechn commiss iec measur carri quot fast quot respons sound level meter quot quot weight curv public begin end set measur sound level meter calibr manufactur instruct mean sound sourc pistonphon test consid invalid sound level meter error regist calibr exce db stationari vehicl test conduct order establish refer author emploi method inspect vehicl servic speed measur engin speed vehicl speed test section determin accuraci condit measur test site test site consist central acceler section surround substanti flat test area acceler section level track surfac dry roll nois remain low test track condit free sound field sound sourc microphon attain db condit deem met larg sound reflect object fenc rock bridg build centr acceler section surfac site made hard materi concret asphalt acoust equival materi minimum radiu centr acceler section free powderi snow tall grass loos soil cinder obstacl affect sound field vicin microphon person stand microphon sound sourc observ carri measur posit affect read measur instrument meteorolog condit measur made poor atmospher condit ensur result affect gust wind ambient nois measur weight sound level sound sourc vehicl test wind effect db sound level produc vehicl suitabl windscreen fit microphon provid account effect sensit direct characterist microphon condit vehicl measur vehicl run order defin item annex direct eec case vehicl uncoupl trailer semi trailer vehicl tyre type fit vehicl manufactur inflat pressur unladen vehicl measur made engin brought normal oper condit temperatur set fuel spark plug carburettor vehicl fit fan automat actuat mechan system interf measur normal highwai drive engag vehicl drive wheel method measur natur number measur maximum sound level express weight decibel db measur vehicl driven line aa bb figur measur invalid abnorm discrep peak gener sound level record measur side vehicl posit microphon microphon locat distanc refer line cc figur track ground axi maximum sensit horizont perpendicular path vehicl line cc condit oper gener condit measur vehicl driven straight line acceler section longitudin median plane vehicl close line cc vehicl approach line aa steadi initi road speed item front end vehicl reach line aa throttl fulli open quickli practic throttl posit maintain rear end vehicl reach line bb throttl return idl posit quickli trailer articul vehicl uncoupl account cross line bb approach speed vehicl approach line aa steadi speed lower speed speed engin speed equal quarter speed engin develop rate maximum power km vehicl fit automat gearbox manual selector test approach speed km quarter maximum road speed lower test result obtain speed produc maximum sound level choic gear ratio vehicl fit gearbox manual oper automat gearbox gt pic file quot quot gt gt pic file quot quot gt automat gearbox fit manual selector vehicl fit manual selector forward posit test conduct selector posit forc chang facil quot kick quot put action automat chang occur line aa cross test restart higher selector posit enabl test place automat chang forc chang facil continu action vehicl fit manual oper auxiliari gearbox multipl ratio drive axl posit normal town drive special selector posit slow manoeuvr brake interpret result account inaccuraci measur instrument result obtain measur determin deduct db meter read measur consid valid differ consecut measur side vehicl exce db highest sound level measur constitut test result result exce maximum permiss sound level categori vehicl test db measur made measur obtain fall prescrib limit sound level stationari vehicl sound level vicin vehicl order facilit subsequ check vehicl sound level measur close exhaust system outlet accord requir measur result enter test report drawn purpos issu certif refer annex iii measur instrument acoust measur precis sound level meter defin item measur measur engin speed engin speed determin mean tachomet accuraci tachomet separ vehicl condit measur test site figur area subject signific acoust disturb test site flat surfac cover concret asphalt hard surfac possess high degre reflect suitabl surfac consist earth tamp test site form rectangl side side vehicl rectangl signific obstacl individu observ driver vehicl posit abovement rectangl microphon kerbston meterolog condit measur made poor atmospher condit ensur result affect gust wind ambient nois read measur instrument produc ambient nois wind db sound level measur suitabl windscreen fit microphon provid account effect sensit microphon condit vehicl vehicl engin brought normal run temperatur measur commenc vehicl fit fan automat actuat mechan system interf sound level measur measur gear lever neutral posit method measur natur number measur maximum sound level express weight decibel db measur oper period refer item measur measur point posit microphon figur microphon locat level exhaust outlet test track surfac whichev higher microphon diaphragm face exhaust outlet distanc axi maximum sensit microphon parallel track surfac angl vertic plane defin direct exhaust gase emit microphon posit side vertic plane greatest distanc microphon vehicl contour exhaust system outlet centr connect silenc microphon face outlet closest vehicl contour outlet highest track surfac case separ measur highest figur record test case vehicl fit vertic exhaust outlet commerci vehicl microphon posit level exhaust outlet face upward axi vertic posit distanc side vehicl closest exhaust outlet design vehicl microphon locat shown figur presenc obstacl form part vehicl spare wheel fuel tank batteri compart draw indic posit microphon made measur conduct microphon nearest obstacl axi maximum sensit face exhaust outlet posit conceal abovement obstacl condit engin oper engin speed stabil quarter speed engin develop rate maximum power constant engin speed reach throttl rapidli return idl posit sound level measur oper period compris mainten constant engin speed entir deceler period maximum sound level meter read test result result test report test report drawn purpos issu certif refer annex iii relev data measur sound stationari vehicl read round nearest decibel measur instrument valu obtain consecut measur differ db consider highest valu constitut test result exhaust system fibrou materi fibrou materi construct silenc suitabl measur undertaken design product stage ensur effici requir compli limit impos item achiev road silenc consid effici road exhaust gase contact fibrou materi silenc prototyp vehicl test accord requir item put normal state road sound level measur achiev test item remov fibrou materi silenc continu road oper km half oper consist town drive half long distanc run high speed continu road oper replac test track programm speed regim altern occas complet test programm includ minimum break hour durat order reproduc effect cool condens occur condit test bench standard part observ vehicl manufactur instruct silenc fit engin coupl dynamomet test conduct hour period break hour period order reproduc effect cool condens occur hour period engin run condit turn minut idl speed hour sequenc load rate maximum speed hour sequenc load rate maximum speed minut sequenc full load rate maximum speed minut sequenc load rate maximum speed minut sequenc load rate maximum speed total durat sequenc hour period compris set abovement sequenc test silenc cool forc draught simul normal airflow vehicl request manufactur silenc cool order exce temperatur record inlet vehicl run maximum speed condit pulsat exhaust system compon thereof fit vehicl refer item engin refer item case vehicl mount roller dynamomet case engin mount dynamomet test apparatu detail diagram shown figur fit outlet exhaust system apparatu provid equival result accept test apparatu adjust exhaust ga flow altern interrupt establish quick action valv cycl valv open exhaust ga back pressur measur mm downstream intak flang reach bar close pressur differ stabil valv open time delai switch set durat ga exhaust result provis laid item engin speed speed engin develop maximum power power dynamomet full throttl power measur engin speed drainhol close test entir test complet hour cool period observ hour provis articl direct eec eec type approv appli test method set item emploi gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt annex ii eec type approv exhaust system separ technic unit replac exhaust system scope annex appli type approv separ technic unit mean articl direct eec exhaust system compon thereof fit type motor vehicl categori replac part definit quot replac exhaust system compon thereof quot mean part exhaust system defin item annex intend replac vehicl part type grant eec type approv vehicl accord annex applic eec type approv applic eec type approv respect replac exhaust system compon thereof separ technic unit submit vehicl manufactur separ technic unit question author repres applic eec type approv respect type replac exhaust system compon thereof accompani underment document triplic inform descript type vehicl system compon thereof fit refer characterist mention item annex number symbol design engin vehicl type descript replac exhaust system indic rel posit system compon mount instruct detail draw compon easili locat identifi refer materi draw place provid compulsori affix eec type approv request technic servic concern applic submit exampl system respect applic eec type approv made exhaust system type origin fit vehicl eec type approv grant vehicl repres type system fit nois level move concern condit respect limit item annex exce db valu obtain type approv test nois level stationari concern respect obtain type approv separ engin type vehicl mark replac exhaust system compon exclud fix hardwar pipe bear bear trade mark trade manufactur replac system compon manufactur commerci descript eec type approv number preced distinct letter countri grant eec type approv mark legibl indel eec type approv applic mean item approv compet author draw certif model shown annex iv type approv number preced distinct letter countri grant eec type approv specif gener specif replac exhaust system compon thereof design construct capabl mount ensur vehicl compli provis direct normal condit notwithstand vibrat subject exhaust system compon thereof design construct capabl mount reason resist corros phenomena expos obtain regard condit vehicl specif relat sound level acoust effici replac exhaust system compon thereof check method item annex replac exhaust system compon thereof mount vehicl refer item annex sound level obtain method stationari move vehicl satisfi condit exce valu obtain type vehicl grant eec type approv exce sound level valu measur vehicl refer item fit exhaust system type fit vehicl eec type approv grant measur vehicl perform replac exhaust system compon thereof ensur vehicl perform compar achiev origin equip exhaust system compon thereof replac exhaust system depend manufactur choic compon system compar origin equip exhaust system compon thereof condit fit turn vehicl refer item belgium feder republ germani dk denmark franc gr greec itali irl ireland luxembourg nl netherland uk unit kingdom check form measur pressur loss condit item measur replac exhaust system exce measur origin equip system condit mention test method engin test method measur conduct engin refer item coupl dynamomet throttl complet open bench adjust obtain engin speed rate maximum power engin measur back pressur pressur tap distanc exhaust manifold figur vehicl test method measur carri vehicl refer item test conduct road roller dynamomet throttl complet open engin load obtain engin speed rate maximum power measur back pressur pressur tap distanc exhaust manifold figur addit provis respect exhaust system compon thereof fill fibrou materi fibrou materi manufactur replac exhaust system compon thereof measur design product stage ensur level effici attain limit set item annex silenc system deem effect traffic exhaust gase contact fibrou materi remov fibrou materi sound level compli requir set item exhaust system test vehicl accord method item annex condit observ entir exhaust system subject condit method item annex condit sound level check item procedur item emploi applic eec type approv condit origin equip exhaust system submit empti conform product replac exhaust system compon thereof bear eec type approv number pursuant direct conform approv type exhaust system compli requir item order check conform requir item exhaust system compon thereof bear eec type approv number seri product deem conform requir direct sound level measur accord item exce level measur eec type approv test type exhaust system compon thereof db back pressur measur point gt pic file quot quot gt annex iii gt pic file quot quot gt gt pic file quot quot gt annex iv gt pic file quot quot gt gt pic file quot quot gt