Brake specific fuel consumption - Wikipedia, the free encyclopedia
Check the years of some of these engines. They go back quite a while. I think BSFC has improved generally but I also think there is a long way to go. Argonne Labs is working on getting close to 60% which is the theoretical ideal for an IC reciprocating engine.
Personally I think 60% is attainable but it will not be with a conventional powertrain. It will need to have capacitive energy storage to allow P&G (engine off) to become the operational standard. The issue is how efficient can you make the capacitive storage. It has to have very high efficiency or you lose the gains from intermittent max efficiency operation.
Engines will need to be redesigned to maximise the on-off constant load operation and many components will be unnecessary as well as other components that will be specificly engineered for a very narrow range of load operation in an all or nothing strategy. Throttle control will be eliminated altogether.
regards
Mech