Cummins has achieved many advances in Variable Geometry Turbochargers (VGTs) to improve engine performance and power, and to reduce harmful engine emissions.
Turbochargers are fan-like devices first used to force air into engine cylinders to boost power and efficiency. They have enabled engines to get smaller and lighter without sacrificing performance.
Cummins’ Variable Geometry Turbochargers have the ability to control air flow independently of engine speed and power to balance exhaust pressure against intake pressure for better emissions control.
Engines with VGTs can achieve peak efficiency over a broader operating range, contributing to better fuel economy and cleaner emissions. VGTs also help produce heat for chemical reactions critical to some exhaust aftertreatment systems.
Cummins’ patented VGT design is known for its simplicity. While other VGTs have many moving parts in the hot gas flow, Cummins’ VGT has one moving flow control surface.
This makes the design much more durable and especially well suited for heavy-duty diesel applications. As a result, Cummins has a more than 90 percent share of the heavy-duty VGT market.