BorgWarner’s new electric butterfly EGR valve features accurate and responsive control integrated with high flow capability, sealing, corrosion resistance and reliable operation in severe operating environments. The technology will be introduced with a commercial engine manufacturer in 2010.
‘New engine concepts for commercial diesel vehicles require greater use of state-of-the-art EGR systems to meet ever stricter emissions standards,’ said Roger Wood, BorgWarner Engine Group president. ‘Thanks to our expertise in turbocharging and exhaust gas recirculation systems, BorgWarner is uniquely positioned to meet the growing demand in this market segment.’
BorgWarner’s electric butterfly EGR valve is developed to meet the requirement for high EGR rates and accurate, responsive flow control. This EGR valve features a brushless DC motor actuator with a gear train. The brushless motor provides high durability and enhanced power-to-weight ratio. Sensors within the motor offer feedback to a closed-loop control system to position the valve and ensure precise control of re-circulated exhaust gas. All key components, incorporating the housing and valve, are built with stainless steel to resist corrosion. The butterfly valve design offers sealing and reliable operation within the harsh diesel exhaust system environment.
Additionally to commercial diesel engine and vehicle applications, BorgWarner’s butterfly EGR valve can also be applied to diesel passenger car applications and is easily combined with an EGR cooler and cooler bypass valve.
BorgWarner Turbo & Emissions Systems is a producer of turbochargers, exhaust gas recirculation valves and other engine air management systems for passenger cars, light trucks and commercial vehicles. These systems are designed to enhance fuel economy, reduce emissions and enhance vehicle performance.
