BorgWarner to Supply Turbochargers for JCB Power Systems
BorgWarner has been selected by JCB Power Systems to supply both wastegate and variable turbine geometry (VTG) turbochargers for the new versions of its Dieselmax 4.4-Liter engines starting in 2012. Designated the JCB ‘Ecomax T4’, it is a four-cylinder inline mid-range diesel offering power ratings from 55 kW to 130 kW in numerous applications like agricultural, construction, and materials handling machinery. According to the company, BorgWarner's turbocharger technology will help this new engine meet stringent Interim Tier 4/Stage III B regulations without the need for exhaust aftertreatment or (DPF) Diesel Particulate Filters. These regulations require up to a 50 per cent reduction in nitrogen oxide (NOx) emissions compared with previous standards.
“BorgWarner VTG turbochargers enable medium-and heavy-duty commercial diesel engines to comply with increasingly stringent global emissions standards while achieving better fuel economy,” said Roger Wood, president and general manager, BorgWarner Turbo Systems. “We are pleased to work with JCB Power Systems to develop optimal solutions to the challenges posed by Interim Tier 4 emissions standards.”
The lower 55 kW rated engine will utilize a BorgWarner fixed geometry turbocharger with integral wastegate boost control, but for the higher ratings JCB will use BorgWarner’s new BV55 VTG (Variable Turbine Geometry) turbocharger technology. The BV55 VTG features a high durability brushless actuator specifically designed and manufactured by BorgWarner for use in heavy duty turbochargers and EGR (Exhaust Gas Recirculation) valves. JCB selected BorgWarner’s BV55 VTG turbocharger for the fuel economy, emission compliance, and transient performance benefits it offers. Equally important in the selection was the robust design and reliability attributes of the BV55 for demanding off-highway applications where the Ecomax T4 engines are used.
BorgWarner engineers report that they worked closely with JCB Power Systems to optimize the charge air system design. BorgWarner’s BV55 VTG turbocharger offers optimum low-speed engine torque characteristics and precise control of engine boost and EGR rate to reduce NOx and particulate matter emissions.