POWERTRAIN FEATURE Next Gen FUEL EFFICIENCY Base Engine: DOHC cylinder head design enables advanced valvetrain technology such as variable valve timing Engine Walk-Around MAINTENANCE REGULATORY RELIABILITY Fuel System: 2400 Bar capability for better PM control and efficiency improvement Incorporates thermal recirculation valve to aid in cold starts and priming pump for efficient startability Power Cylinder: Modified piston bowl and compression ratio Liners designed to accept anti-polish rings Lube & Cooling: Addition of CCV to meet regulatory requirements Valve cover and rocker housing redesigned to incorporate DOHC Cartridge style filters to improve cost and environmental impact Electronics: New CM3550 supports safety, cyber security and software improvements 48V FEAD belt-driven Premium Alternator Air Handling: Improved efficiency through use of new Turbo aero While not a new architecture, the X15 has undergone numerous design and component revisions for its update to meet 2027 emissions regulations. TRUCK & OFF-HIGHWAY ENGINEERING TOHE Bonfiglioli USA Ad 1024.indd 1 October 2024 19 9/17/24 11:09 AM CUMMINShttp://nasatech.hotims.com/86283-707