Keeb kwm
European Union emission cov kev cai rau lub teeb lub luag hauj lwm tsheb tshiab - nrog rau cov neeg nrog caij tsheb thiab lub teeb coj mus muag tsheb (LCV) - yog ib zaug teev nyob rau hauv Directive 70/220 / EEC nrog ib tug xov tooj ntawm cov kev hloov kho tau txais los ntawm 2004. Nyob rau hauv 2007, daim ntawv qhia no tau muab tshem tawm thiab hloov los ntawm Txoj Cai 715/2007 (Euro 5/6) [2899]. Qee qhov tseem ceeb ntawm kev tswj hwm cov kauj ruam uas siv cov qauv emission rau lub teeb lub luag haujlwm yog:
Euro 1 cov qauv (tseem hu ua EC 93): Cov Lus Qhia 91/441 / EEC (cov neeg caij tsheb nkaus xwb) lossis 93/59 / EEC (cov tsheb neeg caij tsheb thiab tsheb thauj khoom)
Euro 2 tus qauv (EC 96): Cov Lus Qhia 94/12/EC lossis 96/69/EC
Euro 3/4 cov qauv (2000/2005): Cov Lus Qhia 98/69/EC, kev hloov kho ntxiv hauv 2002/80/EC
Euro 5/6 cov qauv (2009/2014): Txoj Cai 715/2007 ("kev nom kev tswv" txoj cai) [2899] thiab ntau txoj cai comitologyTxoj Cai 692/2008—txoj cai tseem ceeb [2764][2900]
Txoj Cai 459/2012-PN txwv rau cov tsheb roj av thiab qhov kawg Euro 6 OBD [2898]
Txoj Cai 630/2012-Kev cai rau hydrogen, hydrogen/natural gas (H2NG) thiab hybrid thiab eclectic tsheb [2901]
Kev Tsav Tsheb Tiag Tiag (RDE): Txoj Cai 2016/427 [3362], Txoj Cai 2016/646 [3638], Txoj Cai 2017/1154 [3637][3819], Txoj Cai 2018/1832 [5137][5138]
Kev xeem WLTP/WLTC: Txoj Cai 2017/1151 [3635][3818], Txoj Cai 2017/1347 [3636]
Thov nkag rau hauvmus saib daim ntawv qhia txog kab lus no|Subscription yuav tsum tau.
Kev siv tau.Cov qauv ntsuas hluav taws xob rau lub teeb lub luag haujlwm muaj feem xyuam rau txhua lub tsheb qeb M1, M2, N1thiab N2nrog rau kev siv loj tsis tshaj 2610 kg (Euro 5/6). EU cov kev cai qhia txog kev txwv emissions sib txawv raucompression ignition(diesel) thiabzoo ignition(roj av, NG, LPG, ethanol, ...) tsheb. Diesels muaj cov qauv CO nruj dua tab sis tau tso cai ntau dua NOx. Cov tsheb sib tsoo zoo tau raug zam los ntawm PM cov qauv dhau los ntawm Euro 4 theem. Euro 5/6 cov kev cai qhia PM huab hwm coj emission qauv, sib npaug rau cov diesels, rau qhov zoo ignition tsheb nrog DI xyaw.
EU Cov Tswvcuab tuaj yeem qhia txog kev txhawb nqa se rau kev nthuav qhia ntxov ntawm cov tsheb uas ua raws li cov qauv emissions yav tom ntej.
Roj.Cov qauv 2000/2005 tau nrog rau kev qhia txog cov kev cai siv roj nruj dua uas yuav tsum muaj qhov tsawg kawg nkaus diesel cetane tus naj npawb ntawm 51 (xyoo 2000), qhov siab tshaj plaws diesel sulfur ntsiab lus ntawm 350 ppm hauv 2000 thiab 50 ppm hauv 2005, thiab siab tshaj roj av (gasoline) sulfur. Cov ntsiab lus ntawm 150 ppm hauv 2000 thiab 50 ppm hauv 2005. "Sulfur-free" diesel thiab roj av roj (tsawg dua lossis sib npaug li 10 ppm S) yuav tsum muaj nyob rau xyoo 2005 thiab tau los ua qhov yuav tsum tau ua los ntawm 2009.
Kev kuaj emission.Cov emissions raug sim thoob ntiaj teb kev sib haum xeeb Lub Teeb Tsav Tsheb Test Cycle (WLTC) chassis dynamometer txheej txheem, uas hloov NEDC xeem dhau los. Cov kev xav tau ntawm Kev Tsav Tsheb Tiag Tiag (RDE) tau dhau los ntawm xyoo 2017 los tswj lub tsheb emissions hauv kev ua haujlwm tiag tiag uas siv cov kev ntsuas emissions ua sab nraum lub chaw kuaj.
Emission Standards
EU emission qauv tau sau tseg hauv cov lus hauv qab no. Tag nrho cov hnub uas teev nyob rau hauv cov rooj hais txog tshiabhom kev pom zoo(TA). EC Cov Lus Qhia tseem qhia txog hnub thib ob-ib xyoos tom qab, tshwj tsis yog qhia lwm yam-uas siv rauthawj sau npe(FR, nkag mus rau hauv kev pabcuam) ntawm cov qauv tsheb uas twb muaj lawm, yav dhau los tau pom zoo.
| Theem | Hnub tim | CO | HC | HC plus NOx | NOx | PM | PN |
|---|---|---|---|---|---|---|---|
| g/km | #/km | ||||||
| Positive Ignition (Gasoline) | |||||||
| Euro 1 † | 1992.07 | 2.72 (3.16) | - | 0.97 (1.13) | - | - | - |
| Euro 2 | 1996.01 | 2.2 | - | 0.5 | - | - | - |
| Euro 3 | 2000.01 | 2.30 | 0.20 | - | 0.15 | - | - |
| Euro 4 | 2005.01 | 1.0 | 0.10 | - | 0.08 | - | - |
| Euro 5 | 2009.09b | 1.0 | 0.10d | - | 0.06 | 0.005e,f | - |
| Euro 6 | 2014.09 | 1.0 | 0.10d | - | 0.06 | 0.005e,f | 6.0×1011 e,g |
| Compression Ignition (Diesel) | |||||||
| Euro 1 † | 1992.07 | 2.72 (3.16) | - | 0.97 (1.13) | - | 0.14 (0.18) | - |
| Euro 2, IDI | 1996.01 | 1.0 | - | 0.7 | - | 0.08 | - |
| Euro 2, IB | 1996.01a | 1.0 | - | 0.9 | - | 0.10 | - |
| Euro 3 | 2000.01 | 0.64 | - | 0.56 | 0.50 | 0.05 | - |
| Euro 4 | 2005.01 | 0.50 | - | 0.30 | 0.25 | 0.025 | - |
| Euro 5 a | 2009.09b | 0.50 | - | 0.23 | 0.18 | 0.005f | - |
| eur 5 ib | 2011.09c | 0.50 | - | 0.23 | 0.18 | 0.005f | 6.0×1011 |
| Euro 6 | 2014.09 | 0.50 | - | 0.17 | 0.08 | 0.005f | 6.0×1011 |
| * Ntawm Euro 1..4 theem, cov neeg caij tsheb> 2,500 kg tau pom zoo raws li Qeb N1tsheb † Cov txiaj ntsig hauv cov kab ke yog kev ua raws li kev tsim khoom (COP) txwv a. mus txog rau 1999.09.30 (tom qab hnub ntawd DI cav yuav tsum tau raws li IDI txwv) b. 2011.01 rau tag nrho cov qauv c. 2013.01 rau tag nrho cov qauv d. thiab NMHC=0.068 g/km e. tsuas yog siv rau cov tsheb uas siv DI cav f. 0.0045 g/km siv cov txheej txheem ntsuas PMP g. 6.0×10121 / km hauv thawj peb xyoos txij li hnub Euro 6 |
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| Qeb † | Theem | Hnub tim | CO | HC | HC plus NOx | NOx | PM | PN |
|---|---|---|---|---|---|---|---|---|
| g/km | #/km | |||||||
| Positive Ignition (Gasoline) | ||||||||
| N1, Klas I Tsawg dua lossis sib npaug li 1305 kg |
Euro 1 | 1994.10 | 2.72 | - | 0.97 | - | - | - |
| Euro 2 | 1997.01 | 2.2 | - | 0.50 | - | - | - | |
| Euro 3 | 2000.01 | 2.3 | 0.20 | - | 0.15 | - | - | |
| Euro 4 | 2005.01 | 1.0 | 0.10 | - | 0.08 | - | - | |
| Euro 5 | 2009.09b | 1.0 | 0.10g | - | 0.06 | 0.005e,f | - | |
| Euro 6 | 2014.09 | 1.0 | 0.10g | - | 0.06 | 0.005e,f | 6.0×1011 e,j | |
| N1, Klas II 1305-1760 kg |
Euro 1 | 1994.10 | 5.17 | - | 1.40 | - | - | - |
| Euro 2 | 1998.01 | 4.0 | - | 0.65 | - | - | - | |
| Euro 3 | 2001.01 | 4.17 | 0.25 | - | 0.18 | - | - | |
| Euro 4 | 2006.01 | 1.81 | 0.13 | - | 0.10 | - | - | |
| Euro 5 | 2010.09c | 1.81 | 0.13h | - | 0.075 | 0.005e,f | - | |
| Euro 6 | 2015.09 | 1.81 | 0.13h | - | 0.075 | 0.005e,f | 6.0×1011 e,j | |
| N1, Klas III >1 760kg |
Euro 1 | 1994.10 | 6.90 | - | 1.70 | - | - | - |
| Euro 2 | 1998.01 | 5.0 | - | 0.80 | - | - | - | |
| Euro 3 | 2001.01 | 5.22 | 0.29 | - | 0.21 | - | - | |
| Euro 4 | 2006.01 | 2.27 | 0.16 | - | 0.11 | - | - | |
| Euro 5 | 2010.09c | 2.27 | 0.16i | - | 0.082 | 0.005e,f | - | |
| Euro 6 | 2015.09 | 2.27 | 0.16i | - | 0.082 | 0.005e,f | 6.0×1011 e,j | |
| N2 | Euro 5 | 2010.09c | 2.27 | 0.16i | - | 0.082 | 0.005e,f | - |
| Euro 6 | 2015.09 | 2.27 | 0.16i | - | 0.082 | 0.005e,f | 6.0×1011 e,j | |
| Compression Ignition (Diesel) | ||||||||
| N1, Klas I Tsawg dua lossis sib npaug li 1305 kg |
Euro 1 | 1994.10 | 2.72 | - | 0.97 | - | 0.14 | - |
| Euro 2 IDI | 1997.01 | 1.0 | - | 0.70 | - | 0.08 | - | |
| Euro 2 IB | 1997.01a | 1.0 | - | 0.90 | - | 0.10 | - | |
| Euro 3 | 2000.01 | 0.64 | - | 0.56 | 0.50 | 0.05 | - | |
| Euro 4 | 2005.01 | 0.50 | - | 0.30 | 0.25 | 0.025 | - | |
| Euro 5 a | 2009.09b | 0.50 | - | 0.23 | 0.18 | 0.005f | - | |
| eur 5 ib | 2011.09d | 0.50 | - | 0.23 | 0.18 | 0.005f | 6.0×1011 | |
| Euro 6 | 2014.09 | 0.50 | - | 0.17 | 0.08 | 0.005f | 6.0×1011 | |
| N1, Klas II 1305-1760 kg |
Euro 1 | 1994.10 | 5.17 | - | 1.40 | - | 0.19 | - |
| Euro 2 IDI | 1998.01 | 1.25 | - | 1.0 | - | 0.12 | - | |
| Euro 2 IB | 1998.01a | 1.25 | - | 1.30 | - | 0.14 | - | |
| Euro 3 | 2001.01 | 0.80 | - | 0.72 | 0.65 | 0.07 | - | |
| Euro 4 | 2006.01 | 0.63 | - | 0.39 | 0.33 | 0.04 | - | |
| Euro 5 a | 2010.09c | 0.63 | - | 0.295 | 0.235 | 0.005f | - | |
| eur 5 ib | 2011.09d | 0.63 | - | 0.295 | 0.235 | 0.005f | 6.0×1011 | |
| Euro 6 | 2015.09 | 0.63 | - | 0.195 | 0.105 | 0.005f | 6.0×1011 | |
| N1, Klas III >1 760kg |
Euro 1 | 1994.10 | 6.90 | - | 1.70 | - | 0.25 | - |
| Euro 2 IDI | 1998.01 | 1.5 | - | 1.20 | - | 0.17 | - | |
| Euro 2 IB | 1998.01a | 1.5 | - | 1.60 | - | 0.20 | - | |
| Euro 3 | 2001.01 | 0.95 | - | 0.86 | 0.78 | 0.10 | - | |
| Euro 4 | 2006.01 | 0.74 | - | 0.46 | 0.39 | 0.06 | - | |
| Euro 5 a | 2010.09c | 0.74 | - | 0.350 | 0.280 | 0.005f | - | |
| eur 5 ib | 2011.09d | 0.74 | - | 0.350 | 0.280 | 0.005f | 6.0×1011 | |
| Euro 6 | 2015.09 | 0.74 | - | 0.215 | 0.125 | 0.005f | 6.0×1011 | |
| N2 | Euro 5 a | 2010.09c | 0.74 | - | 0.350 | 0.280 | 0.005f | - |
| eur 5 ib | 2011.09d | 0.74 | - | 0.350 | 0.280 | 0.005f | 6.0×1011 | |
| Euro 6 | 2015.09 | 0.74 | - | 0.215 | 0.125 | 0.005f | 6.0×1011 | |
| †Rau Euro 1/2 Qeb N1Cov chav kawm siv loj yog Chav Kawm I Tsawg dua lossis sib npaug li 1250 kg, Chav II 1250-1700 kg, Chav III> 1700 kg a. mus txog rau 1999.09.30 (tom qab hnub ntawd DI cav yuav tsum tau raws li IDI txwv) b. 2011.01 rau tag nrho cov qauv c. 2012.01 rau tag nrho cov qauv d. 2013.01 rau tag nrho cov qauv e. tsuas yog siv rau cov tsheb uas siv DI cav f. 0.0045 g/km siv cov txheej txheem ntsuas PMP g. thiab NMHC=0.068 g/km h. thiab NMHC=0.090 g/km i. thiab NMHC=0.108 g/km j. 6.0×10121 / km hauv thawj peb xyoos txij li hnub Euro 6 |
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Theem-In ntawm Euro 5/6 Requirements.Ntau qhov kev xav tau tau ntxiv lossis hloov kho tom qab thawj zaug Euro 5/6 hnub ua haujlwm. Ob peb theem ntawm Euro 5/6 tus qauv tuaj yeem txhais tau, suav nrog:
Euro 5 a: Tsis suav cov txheej txheem ntsuas kev hloov kho (PMP) rau PM, PN tus qauv thiab flex roj tsheb ntsuas qhov ntsuas kub qis nrog biofuel;
eur 5 ib: Tag nrho Euro 5 emission yuav tsum muaj xws li PMP ntsuas txheej txheem rau PM, PN tus qauv rau CI tsheb thiab flex roj tsheb tsis kub emission kuaj nrog biofuel;
Euro 6 a: Tsis suav cov txheej txheem ntsuas PMP rau PM, PN tus qauv thiab flex roj tsheb ntsuas qhov ntsuas kub qis nrog cov roj biofuel (theem no siv tau rau cov tsheb uas ua tau raws li Euro 6 cov qauv ua ntej hnub kawg ntawm kev tswj hwm);
ib 6eur: Euro 6 emission requirements nrog rau PMP ntsuas txheej txheem rau PM; PN cov qauv (tus nqi ua ntej rau PI tsheb); thiab flex roj tsheb ntsuas qhov ntsuas kub qis nrog biofuels (E10 thiab B7);
Euro 6 c: Euro 6b cov tseev kom muaj ntxiv rau cov qauv PN kawg rau PI tsheb; RDE NOx kev tshuaj ntsuam xyuas nkaus xwb; OBD Euro 6-2; siv E10 thiab B7 siv roj.
Euro 6c-EVAP: Euro 6c cov tseev kom muaj ntxiv rau kev hloov kho evaporative emissions test process.
Euro 6d-TEMP: Euro 6c cov tseev kom muaj ntxiv rau RDE hom kev pom zoo kuaj tawm tsam 'ib ntus' kev sib haum xeeb (NOx=2.1, PN=1.5).
Euro 6d-TEMP-EVAP: Euro 6d-TEMP cov tseev kom muaj ntxiv rau kev hloov kho evaporative emissions test process.
Euro 6d-TEMP-ISC: Euro 6d-TEMP cov kev cai ntxiv rau cov txheej txheem ISC tshiab, suav nrog RDE ISC, hom 4, thiab hom 6 kev xeem.
Euro 6d-TEMP-EVAP-ISC: Euro 6d-TEMP-ISC cov tseev kom muaj ntxiv rau cov txheej txheem tshiab 48h evaporative xeem.
Euro 6 d: RDE xeem tiv thaiv 'qhov kawg' conformity yam tseem ceeb (NOx=1.43, PM=1.5) ntxiv rau kev hloov kho evaporative emissions test process.
Euro 6d-ISC: Euro 6d cov tseev kom muaj ntxiv rau 48h evaporative emissions test txheej txheem thiab txheej txheem ISC tshiab.
Euro 6d-ISC-FCM: Euro 6d-ISC cov tseev kom muaj ntxiv rau kev saib xyuas roj / hluav taws xob siv hluav taws xob (OBFCM lossis tsuas yog FCM) cov cai rau M1 thiab N1 ICE-tsuas yog, hybrid thiab plug-in hybrid tsheb. Qhov kawg ntawm cov kev hloov pauv tau yooj yim los ntawm cov tswvcuab hauv lub xeev tau tso cai rau cov tsheb sib ntsib ua ntej sub-theem tseem yuav raug muag tom qab Euro6d-ISC-FCM cov kev cai tau dhau los ua kom muaj txiaj ntsig los cuam tshuam qhov cuam tshuam ntawm Covid{11}} kis thoob plaws hauv kev lag luam tsheb.
Euro 6 e: Euro 6d-ISC cov tseev kom muaj ntxiv rau RDE ua raws li kev txiav txim siab hloov kho PEMS qhov yuam kev margins (NOx margin ntawm 0.10, piv txwv li, CF=1.10; PN margin ntawm 0.34, piv txwv li, CF=1.34); on-board FCM rau qeb N2 tsheb.
Euro 6 ib: Euro 6e cov tseev kom muaj ntxiv rau qhov txuas ntxiv txuas ntxiv rau kev ua raws RDE (lub siab RDE kub txwv rau nruab nrab kub hloov mus rau 35 degree los ntawm 30 degree thiab sab sauv txwv rau ncua kub mus rau 38 degree los ntawm 35 degree), Auxiliary Emission System (AES) chij thiab hloov kho cov khoom siv hluav taws xob rau cov tsheb uas tsis muaj tsheb thauj khoom siv cov kev xav tshiab.
Euro 6e-bis-FCM: Euro 6e-bis cov tseev kom muaj ntxiv rau cov khoom siv hluav taws xob hloov kho tshiab rau cov tsheb nrog cov tsheb thauj khoom siv cov ntaub ntawv FCM.
Kev kuaj emission
Cov txheej txheem xeem.Cov emissions raug kuaj dhau lub chassis dynamometer kuaj lub voj voog thiab qhia hauv g / km (tshwj tsis yog PN, uas tau hais hauv 1 / km). Nyob rau tib lub sijhawm, muaj ntau qhov kev hloov pauv rau kev tswj hwm emission cycles:
ECE 15 ntxiv rau EUDC: Thawj lub voj voog EU xeem (tseem hu ua MVEG-A xeem), suav nrog cov nroog hauv nroog thiab cov nroog ntxiv, ua los ntawm kev pib kub.
NEDC: Siv tau los ntawm 2000 (Euro 3), ECE 15 ntxiv rau EUDC kuaj tau raug hloov kho kom tshem tawm 40 s lub cav sov so lub sijhawm ua ntej pib ua qauv emission. Qhov kev hloov pauv hloov pauv no tau raug xa mus rau New European Tsav Cycle (NEDC) lossis raws li MVEG-B xeem.
WLTP: Lub Ntiaj Teb Kev Sib Haum Xeeb Lub Teeb Hluav Taws Xob Kev Xeem (WLTP) thiab cov voj voog sib txuas (WLTC) [3635][3636] hloov NEDC txheej txheem. Kev hloov ntawm NEDC mus rau WLTC tshwm sim raws li lub sijhawm hauv qab no:Cuaj hlis 2017—WLTP hom kev pom zoo kuaj yog qhia rau hom tsheb tshiab. Cov tsheb tau pom zoo siv NEDC qhov kev sim qub tseem tuaj yeem muag tau.
Lub Cuaj Hli 2018-Txhua lub tsheb tshiab yuav tsum tau lees paub raws li WLTP cov txheej txheem xeem.
Lub Ib Hlis 2019-Txhua lub tsheb ntawm cov chaw muag khoom yuav tsum muaj WLTP-CO2tus nqi nkaus xwb (nrog qee qhov kev zam rau qee lub tsheb hauv Tshuag). Cov tsoomfwv hauv tebchaws yuav tsum kho cov se tsheb thiab kev txhawb nqa nyiaj txiag rau WLTP tus nqi.
Thaum lub sijhawm hloov pauv, ua raws li NEDC-based CO2Cov hom phiaj yog txiav txim siab siv CO2MPAS correlation tool. Hauv 2020 lub sijhawm, European Commission yuav hloov pauv NEDC-based CO2lub hom phiaj rau WLTP lub hom phiaj ntawm kev sib piv stringency.
Euro 5/6 siv txoj cai lij choj qhia txog PM thiab PN emission ntsuas cov qauv tshiab tsim los ntawm UN/ECE Particulate Measurement Program (PMP). Txoj kev ntsuas PM huab hwm coj tshiab zoo ib yam li US 2007 txheej txheem. Txoj cai tswj hwm PM huab hwm coj emission txwv tau raug kho kom suav nrog qhov sib txawv ntawm cov txiaj ntsig uas siv cov qauv qub thiab cov qauv tshiab. PN emissions yog ntsuas nyob rau hauv NEDC/WLTC xeem voj voog siv PMP particle tooj txoj kev [UN/ECE Reg. 83 Sib. 7].
Kev Tsav Tsheb tiag tiag.Txij li thaum Euro 6d-TEMP theem, tsheb emissions yuav tsum raug kuaj ntawm txoj kev, ntxiv rau kev sim kuaj. Kev kuaj RDE tau ua thaum lub sijhawm ua haujlwm ntawm lub tsheb uas siv lub tshuab ntsuas hluav taws xob (PEMS). Kev xeem RDE yuav tsum kav ntev li 90 txog 120 feeb. Txoj kev yuav tsum muaj peb ntu: nroog (< 60 km/h), rural (60-90 km/h) and motorway (>90 km / h), nyob rau hauv qhov kev txiav txim thiab nrog rau feem ntawm ib feem peb. Txhua ntu yuav tsum npog qhov deb ntawm tsawg kawg yog 16 km.
NOx emissions yuav tsum tau ntsuas ntawm tag nrho cov tsheb Euro 6 - tsheb neeg caij tsheb thiab lub teeb ua lag luam tsheb. On-txoj kev PN emissions yuav tsum tau ntsuas ntawm tag nrho cov Euro 6 tsheb uas muaj ib tug PN txwv teev (diesel thiab GDI). CO emissions kuj yuav tsum tau ntsuas thiab kaw rau txhua lub tsheb Euro 6. RDE emission txwv yog txhais los ntawm kev sib npaug ntawm cov kev txwv emission los ntawm aconformity yam(CF) rau ib qho emission.
Defeat Devices.Rau lub teeb-lub luag hauj lwm tsheb, EU txoj cai txhais ib tug 'defeat ntaus ntawv' raws li:
txhua lub ntsiab lus ntawm kev tsim qauv uas hnov qhov kub, lub tsheb ceev, lub cav ceev (RPM), kis tau tus mob, lub tshuab nqus tsev manifold lossis lwm yam kev ntsuas rau lub hom phiaj ntawm kev ua kom muaj zog, hloov kho, ncua lossis tshem tawm kev ua haujlwm ntawm ib feem ntawm cov emission tswj system, uas txo kev ua tau zoo ntawm cov emission tswj system nyob rau hauv tej yam kev mob uas tej zaum yuav tsim nyog yuav tsum tau ntsib nyob rau hauv ib txwm lub tsheb khiav thiab siv;
Cov kev cai txwv tsis pub kov yeej tab sis muab cov xwm txheej raws li qhov txwv tsis pub siv. Qhov no tso cai rau cov tuam txhab tsim cov kev xaiv ntawm kev tsis ua haujlwm emission tswj qhov system tiv thaiv lub cav / tsheb thiab pab txhawb kev pib. Txawm li cas los xij, cov kev cai tsis tau hais meej meej 'emission control system', ib qho tseem ceeb ntawm lub ntsiab lus swb. Lub ntsiab lus txhais tau muab rau hauv cov ntsiab lus ntawm OBD system li:
lub tshuab hluav taws xob tswj kev tswj hwm thiab cov khoom siv hluav taws xob cuam tshuam rau hauv cov pa tawm lossis evaporative system uas muab cov tswv yim rau lossis tau txais cov khoom tso tawm los ntawm tus maub los no
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kev txhais no tsis suav nrog cov yam ntxwv xws li roj qhov ntsuas qhov ntsuas, kev tsim hluav taws xob sib xyaw thiab EGR system.
EU cov kev cai tsis meej txog yuav ua li cas cov tuam txhab tsim khoom yuav tsum tau thov rau kev zam rau kev txwv tsis pub kov yeej.
