Advanced science.  Applied technology.


Clean High-Efficiency Diesel Engine VII (CHEDE-VII)

Building on more than 24 years of the industry's longest running diesel research consortium, the Clean High-Efficiency Diesel Engine VII (CHEDE-VII) Consortium began in November 2015.

This program is pursuing the world's most efficient engines to meet the needs of industry 5 to 10 years into the future. The four-year multi-client consortium includes consideration of worldwide markets and technology impacts on each. Goals include research and demonstration of technologies to achieve 55% engine-system efficiency.

  • HD diesel engine system goal of approximately 55% BTE at future low NOx standard
  • LD diesel engine goal of providing a low cost effective, clean LD Diesel at 2025 GHG

Areas of Concentration

  1. Low NOx + Low CO2 Heavy Duty Diesel Engine
    Goals:  Research and demonstration of technologies to achieve 55% engine-system efficiency that meets future low NOX emissions standards (engine goal ~50% BTE, plus waste energy recover =55% BTE total)
  2. Alternative Combustion Technology
    Goals:  Evaluation and demonstration of new and alternative combustion systems. Topics include advanced dual-fuel engine technologies, smokeless diesel combustion, and gasoline compression ignition. Project goals to demonstrate potential engine efficiency and emissions improvements from alternative combustion technology.
  3. Cost Effective, Light Duty Diesel
    Goals:  Multiple paths that include cost effective LD diesel system, opening new potential for diesels in LD gasoline markets (drive-cycle efficiencies 10% better than premium gasoline), emission solution to meet U.S. SULEV, and CO2-minimized diesel for Euro-VI and beyond.

Specific Clean High-Efficiency Diesel Engine Research Areas

  • Dual-fuel and innovative combustion systems
  • Advanced air and EGR systems
  • Waste heat recovery
  • Advanced friction reduction
  • Systems approach to aftertreatment solutions
  • High-pressure spray laboratory

On-Site Clean High-Efficiency Diesel Engine Facilities

  • 15L test beds
  • 13L test beds
  • 7L test bed
  • 2L test bed
  • HD single-cylinder test bed
  • Optical combustion bomb
  • High-pressure spray laboratory
  • Bearing and liner friction laboratory

Membership Details

  • 4 year consortium program, membership renews annually
  • Annual membership fee
    • USD 120,000 for OEMs
    • USD 70,000 for suppliers
    • USD 50,000 for suppliers (no IP, no voting rights)
    • Note: client receives access to data for all 4 years of the program, and must pay dues for all 4 years, regardless of join date
      • e.g., if client joins in Year 4, client must back-pay dues to cover previous work
      • This protects clients that were members from Year 1
      • Join as early as possible to maximize influence on future direction
  • Membership includes
    • Access to monthly progress reports
    • Access to all data collected
    • Invitation to annual report meeting
    • Voting rights to decide future direction of program
    • Royalty-free access to intellectual property developed through research

Current Members

CHEDE-VII currently has 26 members. Join CHEDE-VII.

Upcoming Events

  • CHEDE-VII PAC meeting June 25-26, 2019, Southwest Research Institute