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DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program www.wep-inc.com 2.

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Presentation on theme: "DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program www.wep-inc.com 2."— Presentation transcript:

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2 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program www.wep-inc.com 2

3 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program www.wep-inc.com 3 BEGIN MYEND MYSTART GWVREND GWVRDESIGNATIONMIL CHECKOBDGAS CAPFAIL FOR TAMPERSNAP IDLEDYNO 0197806000Light DutyNNNNNY 01978600114000Medium DutyNNNNNY 0197814001999999Heavy DutyNNNNYN 1979198908500Light DutyNNNNNY 19791989850114000Medium DutyNNNNNY 1979198914001999999Heavy DutyNNNNYN 1990199508500Light DutyNNNYNY 19901995850114000Medium DutyNNNYNY 1990199514001999999Heavy DutyNNNYYN 1996200108500Light DutyNYYYNN 19962001850114000Medium DutyNNNYNY 1996200114001999999Heavy DutyNNNYYN 2002200408500Light DutyNYNYNN 20022004850114000Medium DutyNNNYNY 2002200414001999999Heavy DutyNNNYYN 2005200708500Light DutyYYNYNN 20052007850114000Medium DutyNNNYNY 2005200714001999999Heavy DutyNNNYYN 2008999908500Light DutyYYNYNN 20089999850114000Medium DutyYYNYNN 2008999914001999999Heavy DutyNNNYYN

4 www.wep-inc.com for Interchange of Digital Information 4 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program Test numbers and calculations are close approximates

5 www.wep-inc.com for Interchange of Digital Information 5 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program Repair EGR Repair ELECTRICAL Repair EXHAUST Repair IGNITION Repair INTAKE Repair ENGINE Repair PCV/CDRV Repair OTHER 10351548921564

6 www.wep-inc.com for Interchange of Digital Information 6 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program 11.8% No Pass rate

7 www.wep-inc.com for Interchange of Digital Information 7 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program MISFIRE FUEL COMPONENT NMHC_CAT NOx/SCR BOOST_PRESSURE EXHAUST GASSENSOR PM FILTER EGR/VVT READY10618131068741287358498459975 NOT READY224814968611549258

8 WEP Diesel Opacity Meter Diesel Exhaust Opacity Dynamometer Test www.wep-inc.com 8 Dynamometer test has two phases: 50 MPH Steady Cruise 3 Second Full Throttle Acceleration Dyno load is based on engine/horsepower – 3 options: 30 HP 15 HP 7 HP Opacity - The degree to which something reduces the passage of light

9 www.wep-inc.com For the 63 vehicles that had failing results during the steady cruise portion, the average opacity reading was approx. 35.5% for Interchange of Digital Information 9 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program Cutpoint of 20% opacity 37.2% Fail rate

10 www.wep-inc.com for Interchange of Digital Information 10 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program 1995 MY and older - Cutpoint of 40% opacity 1996 MY and newer – Cutpoint of 20% opacity Vehicle break-out: 44 vehicles - 1996 MY and newer 36 vehicles - 1995 MY and older: Opacity Measurements: Opacity Measurements: Snap 1 Snap 2 Snap 3 Snap 1 Snap 2 Snap 3 : 26.84% 23.61% 25.60% 40.59% 42.70% 37.77% 40.59% 42.70% 37.77% 15.1% Fail rate

11 www.wep-inc.com for Interchange of Digital Information 11 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program

12 www.wep-inc.com for Interchange of Digital Information 12 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program

13 13 DAVIS COUNTY, UTAH Diesel Vehicle Emissions Inspection/Maintenance Program

14 Future Diesel Exhaust Measurements www.wep-inc.com 14 Partial flow diesel emission tester for the measurement of diesel smoke turbidity and PM analyzing using laser technology to identify particles larger than 70 nanometers. Nanometer – 1 billionth of a meter. 1x10 -9 (0.000001mm) Micrometer – 1 millionth of a meter. 1x10 -6 (0.001mm) Also referred to as a micron. Turbid: Having sediment or foreign particles stirred up or suspended

15 Some Very Preliminary Test Data www.wep-inc.com 15 Vehicle Information: Measurements at 50 MPHMeasurements During Acceleration Year:Make:Model:Engine:Opacity %:PM mg:Opacity %:PM mg: 2007DodgeRam 25005.90.5657.4822.59138.19 2005DodgeRam 25005.90.1121.9735.7299.73 2005FordF35061.1827.718.1250.8 2004DodgeRam 25005.91.0113.5711.0323.97 2004DodgeRam 25005.91.0610.4712.0830.56 2003DodgeRam 25005.91.068.77423.8342.056 2003FordF35060.4538.7510.4258.72 2003GMCK25006.61.9177.756.72207.38 2002FordF3507.30.736.9714.9687.56 2000DodgeRam 25005.90.341.47.1287 1999FordF3507.30.6233.159.3950.91 1996DodgeRam 25005.90.229.7415.622.53 1995FordF3507.30.50.91114.7744.409

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