Volvo on Thursday added a third D13 engine model to its product line, the newest one compliant with California Air Resources Board (CARB) 2024 Omnibus regulation requirements for low nitrogen oxide (NOx) and particulate matter (PM) emissions standards.
The CARB '24-compliant engine joins the D13 and the Turbo Compounding D13 in the order book, and is now available for spec on VNR and legacy VNL trucks (not the all new VNL) with a power rating of 455 HP and 1650 lb.ft. of torque. It meets CARB Omnibus regulation mandates that require a 75% reduction in NOx emissions and a 50% reduction in particulate matter (PM) from heavy-duty on-road engines for engine model years 2024 through 2026 compared to existing U.S. Environmental Protection Agency (EPA) standards.
As a result of the Clean Truck Partnership, an agreement completed last year between CARB and truck manufacturers, there will be alignment in all 50 states with federal standards for NOx emissions beginning in 2027.
Volvo Trucks’ CARB '24-compliant 13-liter engine features a variable geometry turbo (VGT) and an advanced emission control system integrated with a fully serviceable linear exhaust aftertreatment system (EATS). Each component, including the Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Aftertreatment Heater, and Selective Catalytic Reduction (SCR), is designed for individual servicing or replacement, an approach that minimizes waste and maximizes operational lifespan.
"Really, the D13 is the same engine on the inside," Volvo Trucks North America Public Relations Manager Kyle Zimmerman told CCJ. "(The CARB-complaint D13) is more about the turbo and then the enhanced aftertreatment system, and the 48-volt alternator."
The 48-volt alternator has been incorporated onto the engine to supply power to a 48-volt battery that powers the heater during startup and low-load situations.
Volvo is the second engine manufacturer in as many months to release a CARB 2024 Omnibus compliant engine, following Paccar's MX-13 in June.
