TECHNOLOGY FOCUSBorgWarner Forecasts Growth of Gasoline Engine Turbocharging AUBURN HILLS, MI (March 14, 2007) - Advances in turbocharger design, manufacturing and materials are expected to boost the growth of turbocharged gasoline direct-injected engines by 30 percent over the next five years, according to industry experts and BorgWarner. "Gasoline-engine turbocharging is not focused exclusively on increasing engine output, but also on combining exceptional engine performance with fuel economy," says Roger Wood, president and general manager, BorgWarner Turbo & Emissions Systems. "These are among the most important challenges facing automakers all over the world. In addition to conventional turbochargers, variable turbine geometry [VTG] technology will play a significant role in gasoline engines." The key feature of the turbocharger is its adjustable guide vanes. The company's VTG design means that at low engine speeds and low exhaust gas flow rates, the vanes in a closed position develop a high boost pressure.