· DEVELOPMENT Phase 1: Design Objective and Concept ·
                        

 

  • Development Requirement

      · Performance goal
        ··Torque vs RPM
        ··Power vs RPM
      · NVH goal
        ··Radiation noise, modal
        ··Inlet snorkel noise
      · Fuel economy, weight and cost

  • Packaging Review

      · Maximum and minimum runner length available
      · Plenum volume available

  • System Concept

      · Variable runner manifold : flap valve or barrel valve
      · Variable resonance manifold
      · VCM (Variable Charge Motion) : tumble, swirl
      · Helmholtz resonator, End feed or center feed

  • Manufacturing Concept

      · 2D manufacturing split concept
      · Number of shells and welding concept
      · Design for manufacturing and assembly