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MMT VEHICLE TEST PROGRAM

MMT VEHICLE TEST PROGRAM Alliance of Automobile Manufacturers Association of International Automobile Manufacturers Canadian Vehicle Manufacturers’ Association July 2002 Overview Findings Program Description Test Fleet Results Conclusions Concerns Recommendations Findings

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MMT VEHICLE TEST PROGRAM

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  1. MMT VEHICLE TEST PROGRAM Alliance of Automobile Manufacturers Association of International Automobile Manufacturers Canadian Vehicle Manufacturers’ Association July 2002

  2. Overview • Findings • Program Description • Test Fleet Results • Conclusions • Concerns • Recommendations

  3. Findings • Program demonstrated that MMT significantly: • increases HC emissions and causes LEVs to exceed HC standard • increases CO and NOx emissions • impairs catalyst and emission control system performance • increases fuel consumption

  4. Program Objectives • Resolve discrepancies reported to date about the effects of MMT • Determine MMT’s impact on • vehicle emissions • performance of emission control devices or systems

  5. Program Description • Statistically-designed program • Two matched pairs of each model • each pair has one MMT and one Clear fueled vehicle • FTP emission tests at specified mileage intervals • 4, 15, 25, 35, 50, 75, 100K • Controlled driving cycle for mileage accumulation • Emission tests using certification testing protocol

  6. Program Fuels • For mileage accumulation: • Clear: Chevron ULCQ (unleaded certification quality) • MMT: Clear + 1/32 g Mn/gal MMT • For emission tests: • California Phase 2

  7. Part 1 Vehicle Test Fleet • 10 models x 2 pairs/model = 40 vehicles • GM • 1996 S-10 Blazer (Tier 1) • 1997 Cavalier (TLEV) • 1997 Saturn (TLEV) • DaimlerChrysler • 1996 Intrepid (TLEV) • 1996 Neon (TLEV) • 1996 Caravan (TLEV) • Ford • 1997 Escort (TLEV) • 1996 Crown Victoria (TLEV) • Honda – 1996 Civic (LEV) • Toyota – 1996 Corolla (Tier 1) • Mileage accumulation 50K (75K for Civic)

  8. Part 1 Findings • Part 1 demonstrated that MMT: • increased fleet HC and CO emissions • decreased fleet NOx emissions • increased fleet fuel consumption • caused component failures • “Check Engine” light illumination, spark plug misfire on both Cavaliers • exhaust valve leakage on one Civic • caused both Civic LEVs to fail the 50K and 100K HC standards

  9. Development of Part 2 • Part 2 developed to address need for more information on LEV technology • LEV failures from Part 1 highlighted need to focus attention on LEV capable vehicles • LEV capable vehicles became available that were not available at start of Part 1 • Future emission levels will be even more stringent increasing concern for vehicle performance (common for cars and trucks)

  10. Part 2 LEV Test Fleet • 4 models x 2 pairs/model = 16 vehicles • Volkswagen – 1999 Beetle • DaimlerChrysler – 1998 Breeze • Ford – 1998 Escort • General Motors – 1999 Tahoe (MDV) • Mileage accumulation 100K

  11. LEV Test Fleet NMOG Emissions • NMOG emissions increase, MMT fueled LDVs fail standard

  12. LEV Test Fleet NOx Emissions • NOx emissions increase

  13. LEV Test Fleet CO Emissions • CO emissions increase

  14. LEV Test Fleet Fuel Economy • Fuel economy decreases

  15. Conclusions • Most comprehensive MMT test program to date shows that MMT significantly: • increases HC emissions and causes LEVs to exceed HC standard • increases CO and NOx emissions • impairs catalyst and emission control system performance • increases fuel consumption

  16. Concerns • Tier 2 benefit potential will not be achieved and air quality will be degraded • Vehicles will fail in-use emission standards • Customer dissatisfaction (e.g., I/M failures, fuel economy loss)

  17. Recommendations • Continue to treat vehicle and fuel as a system • Take appropriate regulatory action to prevent addition of / remove MMT in gasoline • Use existing Clean Air Act / Environmental authority

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