Evaluation

TNO carried out a technical and economic evaluation of the concept. TNO has concluded that JRS-Systems' claim in relation to the maximum potential of the JRS-Engine is correct.

  Technical evaluation  

The main conclusions are:

1. By using the right materials and technologies it is possible for the JRS-Engine to achieve twice the energy efficiency of the conventional Otto- and Diesel-engines.
2. The JRS-Concept provides the designer with a number of additional degrees of freedom that can be used to limit the emissions and/or to optimize the output power curve.
3. The main points for attention in the further development of the engine are the limitation of the heat and pressure losses.

  Economic evaluation  

  Motorcycles:  

The advantages of the JRS-Engine in relation to the Otto-engine are:

1. Better ride qualities due to the weight being 20% lower;
2. Greater comfort due to lower vibration and noise levels;
3. Lower environmental impact;
4. Lower costs due to 50% less fuel consumption and much lower production costs in similar serial production runs;
5. Far fewer and/or much simpler secondary systems required (cooling, exhaust, etc.).

  Micro-Combined heat & power:  

The advantage of the JRS-Engine in relation to the Stirling-engine are:

1. Lower weight;
2. Adjustable energy efficiency;
3. Good energy efficiency at partial load;
4. Short start-up times.

The market for Micro-Combined heat & power is sufficiently large to justify the investment in and the development of the JRS-Engine for this application.