Volvo Trucks North America is seeking certification for a new engine that meets the California Air Resources Board’s (CARB) 2024 Omnibus emissions standards. Once certified, the engine will be available in the all-new Volvo VNL and VNR models, with production and delivery expected to begin in the fourth quarter of 2025.

The engine is designed to meet the CARB-24 0.05g NOx rating while reducing particulate matter emissions. Built on the new Volvo D13 VGT (Variable Geometry Turbo) platform, the engine is expected to be offered in 425 hp/1750 lb.-ft. torque and 455 hp/1850 lb.-ft. torque configurations.

Volvo says the new D13 engine also improves fuel efficiency through a shorter seven-wave piston for improved combustion, a longer connecting rod to reduce friction, a precision needle control valve for optimized fuel flow, and a variable displacement oil pump to minimize parasitic losses. The improvement in fuel efficiency also is expected to have a direct and significant impact on CO2 reduction.

The engine will also include an advanced emission control system, including a fully serviceable linear exhaust aftertreatment system (EATS), which features a Diesel Oxidation Catalyst, Diesel Particulate Filter, and SCR system. Volvo says each component is designed for efficient servicing and replacement. The company added that an integrated 48-volt heater helps achieve ‘ultra-low’ NOx levels during startup and low-load operation.

The new D13 VGT platform complements Volvo’s existing CARB-24 compliant engine option for legacy VNL and VNR models. The company says this move supports its goal of achieving zero emissions in heavy-duty transport by 2040.

“Volvo has developed an engine that is intended to meet both EPA and CARB requirements,” said Johan Agebrand, director of product marketing at VTNA. “We continue to invest in powertrain and vehicle advancements that support our sustainability goals and our commitment to environmental stewardship. The Volvo VNR Electric continues to lead the Class 8 battery electric truck market in North America with over 40 percent market share and continue investments in developing other zero- and near-zero tailpipe emissions technologies.”