Overdrive Magazine | Trucking Business News & Owner Operator Info
Issue link: https://read.dmtmag.com/i/805422
GEAR GUIDE 42 | Overdrive | April 2017 Navistar's International 12.4-liter A26 inline six-cylinder engine weighs 2,299 pounds – 55 pounds lighter than the N13 engine it will replace in the company's order book at the end of the year. The engine, which is 2017 greenhouse gas certifi cation-pending, provides up to 475 horsepower and 1,750 lb.-ft. of torque and is available for order on International LT Series long-haul tractors and RH Series regional-haul trucks. The lightweight design includes a compacted graphite iron crankcase, a shot-peened aluminum fl ywheel housing, composite valve covers and a hollow assembled camshaft that features tool-grade steel lobes for added durability. A variable geometry turbocharger, which uses a titanium compressor wheel with a simplifi ed sin- gle-stage design, simplifi es the engine's air and cooling system and also boosts engine braking power by up to 67 percent. A high-pressure fuel system helps boost fuel economy by upwards of 5 percent versus the N13. The cylinder head's port fl ow geometry is optimized to reduce air restriction and help the engine breathe more consistently from cylinder to cylinder to help increase fuel effi ciency. A six-blade radiator fan and a sculpted crankcase and oil pan both help re- duce noise. The pistons are engineered with a low-friction skirt coating and advanced piston ring geometry to re- duce parasitic losses while also helping to enhance fuel economy. An oil cooler thermostat bypass allows oil to bypass the oil cooler in colder weather, which also helps improve fuel economy. Larger piston pins, connecting rods and bushings help optimize load distribution, and smaller piston cooling jets increase oil pressure to improve lubrication, which helps increase oil change intervals up to 70,000 miles. A laser-welded stainless-steel single-stage exhaust gas recirculation cooler is designed to deliver reliability and per- formance in a compact easy-to-service package. Navistar International, Navistar.com, 331-332-5000 Navistar's 12.4-lit er engine Self-deploying trailer tail Wabco's OptiFlow AutoTail aerodynamic trailer fairing is engineered for au- tomatic deployment and retraction based on driving speed as determined by sensors linked to the company's Trailer Anti-Lock Braking System. The device is designed to deploy automatically at vehicle speeds of 45 mph to ensure it is used to help maximize aerodynamic fuel savings at higher speeds and to retract automatically at 10 mph. It is made from automotive-grade thermoplastic, a lightweight, durable and long-lasting material that resists wear from weather and vibration. The injection-molded panels have a curved shape and smooth surface that help reduce air resistance. Wabco, wabco-optifl ow.com, 248-276-1970 Gates' Fiber Braid Lock-On Hose is suited for petroleum-based hydraulic oils, glycol antifreeze compounds, water, engine-lubricating oils and air. The reinforced hose has an oil- and mildew-resistant cover and a 300-psi working pressure and is designed to meet performance requirements for fuel and B20 biodiesel transfer applications of up to 125 degrees Fahrenheit. Gates Corp., gates.com, 303-744-5595 Fiber braid hose