CFM International launched the new CFM56-7B Evolution engine enhancement program scheduled to enter airline service in mid-2011 to coincide with Boeing Next-Generation 737 airframe improvements. The CFM56-7B Evolution-powered Next-Generation 737 enhanced airplane/engine combination will provide a 2% improvement in fuel consumption, which, in turn, equates to a 2% reduction in carbon emissions. Additionally, the enhanced -7B will provide up to 4% lower maintenance costs, depending on the thrust rating.
The CFM is using advanced computer codes and three-dimensional design techniques to improve airfoils in the high- and low-pressure turbines to improve engine performance. In addition, CFM is improving engine cooling techniques and reducing parts count to achieve lower maintenance costs. The first engine is scheduled to begin ground testing in September of this year.
