Dutch_12078 wrote:
Customer demand drives what equipment is offered on RV's at what cost. If there was enough demand for so called "eco-mode" generators in RV's they would be offered, at least as an option. For me personally, I find it much more annoying to listen to a generator throttling up from idle every time the load changes than listening to the low rumble of my 7KW Onan's near constant 1800 RPM.
There is also the issue of being able to put the wattage out. If a generator is on Eco-Throttle and a compressor starts up, it won't be able to "spin up" enough to handle the load, thus causing low voltages and shortening the life of the compressor.
What would be interesting to see is a generator made similar to a Yamaha 3000iSEB, except with more "boost" potential. It would be a variable speed model, but with the ability to pull off a set of AGM batteries for a few seconds. That way, a genset running at 800 or so RPM would be able to "catch" the load of a microwave or A/C at full head pressure, while it spins up to a RPM that can handle the electrical load.
I do agree with you about a constant RPM. One can get used to the 1800-3600 RPM of a genset, but the engine spinning up and down can get distracting.
JMHO, the best engineering compromise would be going back to four pole generators. That way, it can run at a relatively low speed of 1800 RPM.