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NT1 Range Innovation

  • High pressure ratio and efficiency for a single-stage axial turbocharger
  • Designed to meet current and future IMO diesel engine requirements
  • Suitable for high-altitude and high-ambient installations
  • Complies with all marine and land-based legislation
  • Compatible with all fuel types, for ultimate flexibility
  • Can be tailored for use in marine, power generation and rail applications
  • Fully supported by our world-class global service network
The NT1 Range is our latest single stage turbocharger product line, its state-of-the-art design was introduced to provide engines with high pressure ratios.


Product Statistics

The NT1 Range represents a shift in turbocharger performance, reinforcing Napier's leading position in the market. These units offer market-leading pressure ratios and efficiency levels, while actively helping to reduce emissions and fuel consumption.

NT1 Table data
NT1 Table graph
NT1 capacity data
NT1 compressor-map data


Turbocharger Performance

High pressure ratio and efficiency for this type of turbocharger in the market, reducing emissions and fuel consumption, and achieving more power.

Wide compressor map thanks to anti-surge technology allowing peak efficiency operation in different applications, with increased surge margin eliminating the risk of surge during operation.

High levels of efficiency thanks to 3D CFD (Computational Fluid Dynamics) design of all components making up the aerodynamic elements. Peak efficiency areas can be tailored to specific requirements and applications, such as part or full-load optimisation.

Nt1 series isometric cutaway


Turbocharger Reliability & Cost of Ownership

Long service life under all conditions and duties thanks to fabricated nozzle ring designed for high efficiency and excellent resilience to thermal transients.

Longer lasting components achieved using Finite Element Analysis (FEA) testing to identify high stress points which have then been designed out.

Lowest possible fuel consumption achieved thanks to ability to move peak efficiency point along the range, reducing cost for your operation.

Extensive Field Experience NT1 turbochargers have been operating in the field since 2012 and have accumulated more than 20 Million cumulative running hours.

Serviceability The NT1 series is designed for ease of service and utilises the proven cartridge concept.

Nt1 series side cutaway


Turbocharger Flexibility

Fuel Flexibility has been integrated into the design philosophy from conception, capability to run on Heavy Fuel Oil has been proven through rigorous field testing and analysis. The NT1 series also has Extensive experience running on a variety of gas fuels including natural gas, LNG, landfill and has been tested decarbonised fuels such as on Ammonia and hydrogen.

Operational Flexibility is key to the success of the NT1 series, with the ability to operate with both constant and pulse pressure systems, matching engine requirements. Altitude capability and wide-ranging temperature capability without derating has been a feature from introduction.

Nt1 series side

How can we help with your project?

Whether you need our turbochargers or just our expertise, we're always happy to chat about your requirements.

We'll talk you through the services and support we can provide, and which of our products may be best suited to your needs.

Simply fill out the form with your details and we'll be in touch very soon.

Contact us
7 series side

7 Series

  • NA297
  • NA307
  • NA357
  • NA397
View the 7 Series
Nt2 series both

NT2 Series (Two-Stage)

  • NT2-26
  • NT2-28
View the NT2

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