BorgWarner's VTG Turbochargers Offer Lower Emissions, Better Fuel Economy
AUBURN HILLS, Mich., Aug. 5 /PRNewswire-FirstCall/ -- BorgWarner was chosen to supply variable turbine geometry (VTG) turbochargers to boost John Deere Power Systems Interim Tier 4/Stage III B PowerTech(TM) PVX and PowerTech(TM) PSX 4.5L, 6.8L and 13.5L diesel engines for agricultural, construction, forestry and OEM applications. BorgWarner's turbocharging technology helps these new industrial engines meet stringent Interim Tier 4/Stage III B regulations for off-highway applications. These regulations require up to a 50% reduction in nitrogen oxide (NOx) emissions compared with previous standards.
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"BorgWarner VTG turbochargers are the first to prove their reliability under the extreme vibration, temperature and duty cycles of off-highway conditions while meeting next-level emissions standards and achieving best-in-class fuel economy," said Roger Wood, President and General Manager, BorgWarner Turbo & Emissions Systems. "We are pleased to work with John Deere Power Systems to develop solutions for Interim Tier 4 emissions standards."
Beginning with the development of Tier 3 and continuing with Interim Tier 4 compliant engines, John Deere Power Systems worked with BorgWarner Turbo & Emissions Systems to pioneer the use of cooled exhaust gas recirculation (EGR) and VTG turbocharging technology in off-highway engines. With cooled EGR, exhaust gasses are cooled and introduced back into the fresh air stream to reduce NOx emissions. Compared with other turbo technologies, VTG turbochargers more accurately control EGR flow by precisely opening and closing guide vanes to balance the exhaust pressure to intake pressure.
BorgWarner commercial diesel VTG turbochargers have been specifically engineered to withstand the extreme environment and duty cycles commonly seen in off-highway applications. Beginning with Interim Tier 4 compliant engines, BorgWarner VTG turbochargers will feature BorgWarner's own compact brushless actuator specifically designed for use in heavy-duty turbochargers and EGR valves.
BorgWarner's VTG turbocharging technology enabled John Deere Power Systems to achieve record fuel economy improvements in Tier 3 models over Tier 2/Stage II models, even in the most severe operating environments. Powered by the PowerTech Plus 9.0L engine, featuring BorgWarner's BV70 model VTG turbocharger, the John Deere 8430 tractor achieved an 8.8% improvement in fuel economy, making it the most fuel efficient row crop tractor ever tested by the Nebraska Tractor Test Lab.
