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MOBILE6 DRAFT Technical Documentation

[MOBILE6 home]  [Final Technical Documentation]

MOBILE6 Vehicle Emission Modeling Software

DRAFT Technical Documentation

This web site supplies draft technical reports and development planning documents for MOBILE6.

Contact:  ASD Information, phone:  (734) 214-4636 or email: asdinfo@epa.gov for further information on documents and other information contained on this web site.

• Draft User's Guide
• Draft Technical Reports
• MOBILE6 Development Planning Documents

NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

Draft User's Guide

• The most recent MOBILE6 User's Guide (PDF) (846K, EPA420-R-03-010, August 2003)
• Draft User's Guide to MOBILE6 (PDF) (440K, EPA420-D-01-002a, February 21, 2001) (This just changes one input command description from EPA420-D-01-002 dated 2/02/2001.)
  • This supersedes the previous drafts (PDF) (340K, EPA420-P-00-005, November 2000)

Draft Technical Reports

The comment period for these documents is closed. These documents are provided for your information, and are being updated as needed in the final technical documentation to reflect comments.

• Draft MOBILE6.1 Particulate Emission Factor Model Technical Description Report (PDF) (160K, EPA420-R-02-012, March, 2002)
• Draft Technical Description of MOBILE6.2 and Guidance on Its use for Inventory Preparation (EPA420-R-02-011, February, 2002)
  • Report (PDF) (with Appendix: Local Fuel Parameters for Selected Areas) (220K)
  • Appendix alone (XLS) (65K)
  • Spreadsheet with MOBILE6.2 versus MOBTOX5b comparisons for Atlanta, Chicago, and Los Angeles (XLS) (4MB)
• In-Use Exhaust Deterioration and I/M Benefits of 1981 and Newer Model Year Cars and Trucks: Package of Related Material
• Air Conditioning Activity Effects in MOBILE6 (M6.ACE.001 posted 1/27/98)
  • Abstract
  • Full Report (PDF) (175K)
• Air Conditioning Correction Factors in MOBILE6 (M6.ACE.002 posted 3/13/98)
  • Abstract
  • Full Report (PDF) (153K)
• Evaluating Resting Loss and Diurnal Evaporative Emissions Using Real Time Diurnal Tests (M6.EVP.001, originally posted 10/97 as M6.RTD.001, revision posted 7/15/99, EPA420-P-99-026)
  • Abstract
  • Full Report (PDF) (210K)
• Modeling Hourly Diurnal Emissions and Interrupted Diurnal Emissions Based on Real-Time Diurnal Data (M6.EVP.002 originally posted 5/21/98, revision posted 7/15/99, EPA420-P-99-027)
  • Abstract
  • Full Report (PDF) (240K)
• Evaluating Multiple Day Diurnal Evaporative Emissions Using RTD Tests (M6.EVP.003, posted 3/9/99, EPA420-P-99-003)
  • Abstract
  • Full Report (PDF) (50K)
• Update of Hot Soak Emissions Analysis (M6.EVP.004 posted 3/8/99, EPA420-P-99-005)
  • Abstract
  • Full Report (PDF) (148K)

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• Modeling Diurnal and Resting Loss Emissions from Vehicles Certified to the Enhanced Evaporative Standards (M6.EVP.005, posted 5/17/99, EPA420-P-98-012)
  • Abstract
  • Full Report (PDF) (106K)
• Estimating Weighting Factors for Evaporative Emissions in MOBILE6 (M6.EVP.006, posted 7/15/99, EPA420-P-99-023)
  • Abstract
  • Full Report (PDF) (165K)
• Hot Soak Emissions as a Function of Soak Time (M6.EVP.007 posted 6/23/98)
  • Abstract
  • Full Report (PDF) (110K)
• Estimating Running Loss Evaporative Emissions Based on Real-time Data (M6.EVP.008, posted 7/15/99, EPA420-P-99-024)
  • Abstract
  • Full Report (PDF) (32K)
• Evaporative Emissions of Gross Liquid Leakers in MOBILE6 (M6.EVP.009, posted 7/15/99, EPA420-P-99-025)
  • Abstract
  • Full Report (PDF) (135K)
• Determination of Running Emissions as a Function of Mileage for 1981-1993 Model Year Light-Duty Cars and Trucks (M6.EXH.001, posted 5/3/99, EPA420-P-99-010)
  • Abstract
  • Full Report (PDF) (3.4MB)
• Analysis of Emissions Deterioration Using Ohio and Wisconsin IM240 Data (M6.EXH.002, posted 5/3/99, EPA420-P-99-013)
  • Abstract
  • Full Report (PDF) (49K)
• Accounting for the Tier 2 and Heavy-Duty 2005/2007 Requirements in MOBILE6 (M6.EXH.004, EPA420-R-01-057)
  • Abstract
  • Report (PDF) (70K)
• Basic Exhaust Emission Rates of Open Loop Vehicles for MOBILE6: Exhaust Emissions at High and Low Altitudes for Engine Starts and Running Emissions for Motorcycles, Light Duty Diesel Vehicles and Trucks and Pre-1981 Model Year Light Duty Gasoline Vehicles and Trucks (M6.EXH.005, posted 5/17/99, EPA420-P-99-020)
  • Abstract
  • Full Report (PDF) (114K)
• Determination of Methane Offsets as a Function of Mileage for Light-Duty Cars and Trucks (M6.EXH.006, posted 11/15/99, EPA420-P-99-029)
  • Abstract
  • Full Report (PDF) (960K)

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• Determination of NOx and HC Basic Emission Rates, OBD and I/M Effects for Tier 1 and Later LDVs and LDTs M6.EXH.007, posted 5/3/99, EPA420-P-99-009)
  • Abstract
  • Full Report (PDF) (195K)
    or 100K Excel-97 and 130K Excel-97
• Overview of Methodology for Tier 0 In-Use Deterioration and Key Issues for Comment (M6.EXH.008, posted 5/3/99, EPA420-P-99-016)
  • Abstract
  • Full Report (PDF) (285K)
• Determination of CO Basic Emission Rates, OBD and I/M Effects for Tier 1 and Later LDVs and LDTs (M6.EXH.009, posted 5/21/99, EPA420-P-99-017)
  • Abstract
  • Full Report (PDF) (298K)
• Determination of CO BERs, OBD and I/M Effects for Tier1, TLEV, LEV and ULEV Light Duty Vehicles and Trucks (M6.EXH.009, April 2001, EPA420-R-01-032)
  • Abstract
  • Report (PDF) (105K)
• Comparison of MOBILE6 Basic Emission Rates for 1981-1993 Model Year Light-Duty Cars and Trucks with FTP and IM240 Data (M6.EXH.010, posted 5/21/99, EPA420-P-99-021)
  • Abstract
  • Body of report only (PDF) (53K)
  • Full Report including all graphs (PDF) (2.6MB)
• 9/97 Update of Fleet Characterization Data for Use in MOBILE6.
  This document has been superseded by M6FLT002 (PDF).
  • Abstract
  • Full Report (PDF) (375K)
• Update of Fleet Characterization Data for Use in MOBILE6 (M6.FLT.002, posted 6/19/98, re-posted with correct figures 11/30/98)
  • Abstract
  • Full Report (PDF) (309K)
• Soak Length Activity Factors for Start Emissions (posted 2/18/98)
  • Abstract
  • Full Report (PDF) (60K)
• Soak Length Activity Factors for Hot Soak Emissions (posted 2/18/98)
  • Abstract
  • Full Report (PDF) (45K)
• Trip Length Activity Factors for Running Loss and Exhaust Running Emissions (posted 2/18/98)
  • Abstract
  • Full Report (PDF) (40K)

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• Soak Length Activity Factors for Diurnal Emissions (M6.FLT.006 posted 3/9/99, EPA420-P-98-019)
  • Abstract
  • Full Report (PDF) (78K)
  • Illustrative Excel workbooks 100K MS-Excel5 and 490K MS-Excel5
• Fleet Characterization Data for MOBILE6: Development and Use of Age Distributions, Average Annual Mileage Accumulation Rates and Projected Vehicle Counts for Use in MOBILE6 (M6.FLT.007, posted 5/3/99, EPA420-P-99-011)
  • Abstract
  • Full Report (PDF) (470K)
• Emission Control Technology Distribution (M6.FLT.008, posted 6/19/98)
  • Abstract
  • Full Report (PDF) (200K)
• Fuel Sulfur Effects on Exhaust Emissions: Recommendations for MOBILE6 (M6.FUL.001, posted 5/3/99, EPA420-P-99-008)
  • Abstract
  • Full Report (PDF) (126K)
• Fuel Oxygen Effects on Exhaust CO Emissions (M6.FUL.002 posted 3/30/98)
  • Abstract
  • Full Report (PDF) (220K)
• Modeling Emission Factors for Compressed Natural Gas Vehicles (M6.FUL.004, posted 5/17/99, EPA420-P-99-012)
  • Abstract
  • Full Report (PDF) (88K)
• Update of Heavy-Duty Emission Levels (Model Years 1988-2004+) for Use in MOBILE6 (M6.HDE.001, posted 5/3/99, EPA420-R-99-010)
  • Abstract
  • Full Report (PDF) (120K)
• Update Heavy-duty Engine Emission Conversion Factors for MOBILE6: Analysis of Fuel Economy, Non-Engine Fuel Economy Improvements, and Fuel Densities (M6.HDE.002 posted 5/29/98)
  • Abstract
  • Full Report (PDF) (90K)
• Development and Use of Heavy-duty Defeat Device Emission Effects for MOBILE5 AND MOBILE6 (M6.HDE.003, posted 10/27/99, EPA420-P-99-030)
  • Abstract
  • Full Report (PDF) (235K)
  • MOBILE5 Effects Spreadsheet (Excel-97) (60K)
  • MOBILE6 Effects Spreadsheet (Excel-97) (60K)
• Update Heavy-duty Engine Emission Conversion Factors for MOBILE6: Analysis of BSFCs and Calculation of Heavy-duty Engine Emission Conversion Factors (M6.HDE.004 posted 5/29/98)
  • Abstract
  • Full Report (PDF) (70K)

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• MOBILE6 Inspection / Maintenance Benefits Methodology for 1981 through 1993 Model Year Light Vehicles (M6.IM.001, posted 5/3/99, EPA420-P-99-007)
  • Abstract
  • Full Report (PDF) (740K)
• Determining Repair Effects on IM240 Cold Start Emissions for 1981 and later Light Duty Vehicles (M6.IM.002, posted 5/17/99, EPA420-P-99-019)
  • Abstract
  • Full Report (PDF) (33K)
• Estimating Benefits of Inspection/Maintenance Programs for Evaporative Control Systems (M6.IM.003, posted 11/17/99, EPA420-P-99-031)
  • Abstract
  • Full Report (PDF) (240K)
  • Spreadsheet (Excel-5) (1.2MB)
• Development of Speed Correction Cycles
  • Abstract
  • 6/97 Full Report (PDF) (930K)
• Facility-Specific Speed Correction Factors (M6.SPD.002, posted 8/24/99, EPA420-P-99-002)
  • Abstract
  • Full Report (PDF) (410K)
• Development of Methodology for Estimating VMT Weighting by Facility Type (M6.SPD.003, posted 3/9/99, EPA420-P-99-006)
  • Abstract
  • Full Report (PDF) (900K)
• Guidance for the Development of Facility Type VMT and Speed Distributions (M6.SPD.004, posted 3/9/99, EPA420-P-99-004)
  • Abstract
  • Full Report (PDF) (210K)
• Comparison of Start Emissions in the LA92 and ST01 Test Cycles
  • Abstract
  • Full Report (PDF) (40K)
  • Database & description (ZIP) (65K)
• 10/97 Determination of Hot Running Emissions from FTP Bag Emissions (M6.STE.002, reposted 5/3/99, EPA420-P-99-014)
  • Abstract
  • Full Report (PDF) (67K)
• Determination of Start Emissions as a Function of Mileage and Soak Time for 1981-1993 Model Year Light-Duty Vehicles (M6.STE.003, reposted 5/3/99, EPA420-P-99-015)
  • Abstract
  • Full Report (PDF) (74K)
• Exhaust Emission Temperature Correction Factors for MOBILE6: Engine Start and Running LA4 Emissions for Gasoline Vehicles (M6.STE.004, posted 3/9/99, EPA420-P-99-001)
  • Abstract
  • Full Report (PDF) (47K)

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MOBILE6 Development Planning Documents

• 3/97 Summaries of Analysis Plans for MOBILE6 Development
  • Input/Output Changes
  • Evaporative Diurnal Emissions
  • Onboard Diagnostics
  • Heavy-duty
  • Fleet Characterization
  • Basic Exhaust & Deterioration
  • Control Technology Distribution
  • Fuel Effects
  • Exhaust Emissions from Engine Start
  • High Emitters
  • Air Conditioning
  • Speed/Non-FTP Corrections
• 11/96 Initial plans/issues/schedule for the release of MOBILE6

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