Turbocharger Fuel Saving VTA Technology by MAN Takes Off

By George Backwell at July 21, 2012 09:10
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Variable Turbine Area (VTA) geometry for the largest exhaust-gas turbochargers, introduced by MAN Diesel & Turbo about four years ago, recently topped the hundred sales mark according to the manufacturers, as the technology gradually proved itself effective in reducing fuel-oil consumption in medium and low-speed marine diesel engines.The VTA is designed for fitting on supercharged large-bore diesel engines with varying load profiles. Due to its adjustability, the VTA efficiently adapts to a wide range of engine operations, making it particularly useful for the present-day trend to slow-steam bulkers, tankers and container ships.MAN say that the first VTA unit delivered has so far accumulated over 20,000 operating hours running on engines using heavy fuel oil (HFO) to give fuel consumption savings of up to 5 g/kWh.VTA Turbocharging VTA technology enables the quantity of charge air to be more precisely matched to the quantity of fuel injected, encouraging reduced specific fuel co... [More]

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