• <p>Products</p>
  • <p>Products</p>
  • <p>Products</p>
  • <p>Products</p>
  • <p>Products</p>

Products

We are an internationally recognised manufacturer of parts and solutions in the field of fuel injection for large engines with alternative, sustainable fuels as well as for engines with conventional fuels. Contact us if you are interested in a specific product.

Customised solutions

Customised solutions

Your wish counts: DUAP develops customised injection systems for you with measurable added value in terms of technology, performance and efficiency. This saves you time and money in the long term.

Whether for large engines with conventional fuel or for engines with alternative fuels, DUAP can offer you the injection solution or develop a new one that brings you the desired benefits. Our services range from expert advice and comprehensive project management to the application of our in-depth technical expertise during implementation. All systems and spare parts are produced in a single, high quality - regardless of the customer and their application.

  • Injection systems for alternative fuels
  • Injection systems for alternative fuels
  • Injection systems for alternative fuels

Injection systems for alternative fuels

Gas mixtures and pure hydrogen offer great potential for large engines, as they can replace carbon-based fuels and achieve high energy efficiency. DUAP offers injection systems for gas and hydrogen. In co-operation with ITAZ, DUAP has developed an injector with short injection times.

One focus is on optimising the power density of gas engines for heavy-duty and long-distance transport, while another is on the cost-effectiveness of operating CO2-neutral drive and energy generation systems.

  • Micropilot injection for gas engines
  • Micropilot injection for gas engines

Micropilot injection for gas engines

Micro-pilot injection systems are used in gas engines to ignite a gas that is difficult to ignite compared to diesel, such as natural gas.

By injecting and igniting a small amount of traditional fuel (micro-pilot), the highly flammable gas is ignited in the cylinder. DUAP has been offering leading systems in this field for many years.

  • Injection systems for diesel & dual fuel
  • Injection systems for diesel & dual fuel

Injection systems for diesel & dual fuel

In the field of large diesel, HFO and dual fuel engines, we cover all areas of application and guarantee all customers a comprehensive supply of original spare parts for injection systems in large diesel engines.

The power range in the various applications extends from 500 kW to 20,000 kW as a common rail or PLD solution. An even greater power range can be covered by several pressuriser elements.

  • Fuel pumps
  • Fuel pumps

Fuel pumps

High-pressure pumps, which are used to inject fuel into diesel engines, are among the most technically sophisticated representatives of pressure generators.

Our reliable and proven pumps are characterised by decades of expertise in the areas of control curves (for PLD systems), component coatings, sealing elements and valve technology.

The same design basis is also used for all common rail pumps.

We supply mechanical PLD pumps for large 4-stroke engines and various fuel types: MDO, HFO, biofuel and others.

  • Pump pistons & cylinders
  • Pump pistons & cylinders
  • Pump pistons & cylinders

Pump pistons & cylinders

Like all spare parts, our pump pistons and cylinders are designed, manufactured and tested in-house in a rigorous development programme - with proven functionality for our customers.

  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors
  • Injectors

Injectors

When manufacturing injection nozzles, we pay particular attention to the accuracy and quality of the fillets, grooves, blind holes and coatings such as ADLC/TIN.

This enables our customers to achieve their goals in the areas of fuel savings and durability.

Injection valves

Injection valves

Like all spare parts, our injection valves are manufactured in-house in Switzerland. This allows us to guarantee our customers the high functionality and durability they value.

  • Pre-chambers for gas engines
  • Pre-chambers for gas engines

Pre-chambers for gas engines

By consistently using high-quality, temperature-resistant raw materials, we maximise the durability of the gas engine pre-chambers manufactured at our plant in Switzerland for our customers.

  • Spare parts
  • Spare parts
  • Spare parts

Spare parts

Our range of spare parts includes pump elements, seal and spare parts kits, connectors, high-pressure lines and pipes, nozzles and much more. All spare parts are designed, developed and tested in-house in a rigorous development programme - with proven functionality when the goods are delivered.