Cummins highlights key innovations in turbocharger design for commercial vehicles
Cummins' Holset turbochargers are evolving with advanced components like ball bearings and variable geometry turbines to boost efficiency and emissions performance.
- 1919
- 2.8 billion
- 33.7 billion
- 2025
What Happened
Engines depend on turbochargers to deliver power, efficiency and emissions performance. At Cummins, Holset turbochargers are tailored to specific customer and application requirements to balance performance, efficiency and durability.
Key innovations include compressor stage advances like abradable coatings and vaned compressors that improve efficiency and pressure capability. The bearing system now accommodates roller element bearings (ball bearings) to reduce frictional losses and improve transient response.
Turbine stage innovations include advanced variable geometry turbine technology that precisely controls clearances in the nozzle, and wastegate turbocharger products with full back shroud turbine wheels. Proper matching of compressor and turbine components ensures optimal performance across operating conditions.
Why this matters
Turbochargers are critical for internal combustion engines in trucks, and their design improvements directly impact fuel economy, power, and meeting stricter emissions standards.
Terms in This Story
- Turbocharger
- A device that forces extra air into an engine's combustion chamber, improving power and efficiency.
- Variable Geometry Turbine
- A turbine with adjustable vanes that optimize exhaust flow across different engine speeds, improving efficiency and reducing lag.
- Compressor Stage
- The part of a turbocharger that compresses incoming air before it enters the engine.
Summarised from the linked release; details can be imperfect — always verify against the original source.