Evolution and Future Trends
Garrett is a pioneer in the Two Stage technology. First developed for high-altitude mining equipment in the early 1990s, Two Stage turbo system was then adopted for high-volume on-highway truck engines in 2003. While most Two Stage systems incorporate advanced wastegate and free-floating turbos, some OEMs are also opting for Two Stage systems that include variable geometry architectures to meet specific power and low end torque criteria and to drive the high pressure EGR.
Two Stage turbo technology will see wider adoption around the world due to its inherent ability to help meet performance and emissions goals while maintaining system robustness. Garrett engineers are committed to strengthen the company’s leadership in this technology through advances in aerodynamics, bearing and sealing systems and materials.