Issue link: https://read.dmtmag.com/i/671317
Volvo also updated its 11-liter D11 and standard 13-liter D13, already two of the industry's most fuel- efficient engines. Wade Long, direc- tor of product marketing for Volvo Trucks North America, says the engines feature a proven common-rail fuel system for reduced engine and cab noise, providing drivers a more comfortable ride. The common-rail fuel system also contributes to fuel efficiency improvements through finer control of the fuel injection, allowing for quicker, more accurate injection and a more efficient way to control fuel pressure, Long adds. An updated EGR flow sensor has a new double-wall casing that reduces condensation and soot buildup in cold weather, preventing downtime, Volvo says. A low-pressure fuel system features an improved aftertreatment dosing module that is integrated into the fuel filter housing for easier ser- viceability. Upgrades to the two-speed coolant pump for both engines also improve fuel efficiency as a result of reduced parasitic losses. The new in- take throttle enables a faster warmup when the engine is started. The 2017 Volvo D11 offers up to 425 horsepower and 1,550 lb.-ft. of torque, an increase of 20 horsepower. The engine also delivers up to a 2.2 percent fuel efficiency improvement compared with the previous D11 engine, Long says. Designed for re- gional, less than truckload (LTL) and pickup-and- delivery applications, the D11 is available in Volvo VN day- cabs, VNM 430 and VNL 430 sleeper models, VAH and VHD models. D11 production is expected to begin in January of next year. The 2017 Volvo D13 and D11 feature a new wave piston, which increases the compression ratio, Long says, from 16:1 to 17:1 and maximizes fuel efficiency. Improved flame propoga- tion reduces soot, while also increas- ing cylinder efficiency. The updated D13 – Volvo's most pop- ular engine – is available in the Volvo VN, VHD and VAH models, and offers a fuel efficiency improvement of up to 2.5 percent compared to the previous D13. These engine enhance- ments were also included in the 2017 Volvo D13 with turbo compounding. Production on the D13 is expected to being October 2016. Volvo's D16, which get no major updates, will begin production in January 2017. Volvo closed 2015 with almost 93 percent of its trucks spec'd with Volvo power, Nyberg says. New standard aftertreatment system Volvo also introduced a new one-box exhaust aftertreatment system that combines the diesel particulate filter (DPF) with the selective catalytic re- duction (SCR) and diesel exhaust fluid doser into a single unit. The system features a new copper- zeolite coating that improves low temperature NOx conversion for improved emissions. Volvo says the new design configura- tion results in better thermal perfor- mance for improved efficiency, smaller 26 www.bigrigowner.com M A Y 2 0 1 6 HPD