Cummins announces advancements to series 850 Holset® turbocharger
17 August 2023
Cummins announced four technological advancements to its Series 850 Holset® Turbocharger. The upgraded Series 850 is suitable for high horsepower applications with engines ranging from 15 L to 95 L (15 L to 25 L per turbocharger).
The latest upgrades to the Series 850 Holset Turbocharger include:
- High Pressure Ratio Compressor: Like its predecessor, the Series 850 includes Cummins’ advanced High Pressure Ratio Compressor (HPRC) technology, a product enhancement the company released in 2020. The compressor features:
- +7 points efficiency at 4.5:1 pressure ratio from current product
- > 6:1 pressure ratio (vaneless or vaned)
- 25% to 40% power uprated achievable
- Increased altitude capability
- ~5% improvement in BSFC (simulated) when matched with HPRC
- New inverse impeller:
- Bespoke design optimized to meet higher performance with improved durability
- Vaned and vaneless diffuser:
- Vaneless design offers enhanced map width at higher pressure ratios, whereas vaned design offers efficient higher pressure ratio capability with flexibility to improve usability by altering vane designs.
- Thin wall stainless steel compressor cover:
- Stainless steel compressor cover offers weight reduction against cast iron version attributed to investment casting process to cast thin-walled castings.
The upgraded Series 850, manufactured in Huddersfield, UK, is available now for a range of off-highway applications including power generation, agricultural, mining, oil and gas, rail, construction and marine.
Source: Cummins