There are two determinants that are primary in many engine buyer’s minds when choosing an engine: Horsepower and price. However, there are other factors, sometimes more important, that need to be taken into account when choosing an engine:
- Torque. Torque is often neglected in terms of considerations instead of horsepower, but it can actually be more important. This article from earlier this year explains the reasons why consideration of torque is so important.
- Fuel consumption. A difference in fuel consumption rates of only a few grams per kilowatthour equates to thousands of Euros per year in additional operating costs.
- Space. Engines must be able to fit into the space available.
- Weight. Heavier engines require more power to move. On boats, extra weight translates directly into extra displacement.
- Noise. This especially applies to gensets, but also on propulsion engines. Noise can become highly problematic in some applications.
- Life Cycle. Small differences in life cycle translate into thousands of Euros in additional costs over the life of the engine.
- Cost of spares. All spares are not created equally. Some brands have a reputation of having a high cost of spares.
- Maintenance network. Dealers and local service are important. That few thousand Euros saved at purchase is easily eaten up by additional downtime costs. Waiting weeks for spares to arrive from China gets very expensive, very quickly.