3000W Chinese Gensets Info.

Wayne Dohnal wrote:
One statement in the linked thread "I know that an Otto Cycle engine is least efficient at low mean piston speeds. They use the so-called "Eco Throttle" on the inverter gens to idle them down, and this is supposed to save fuel." shows a possible basic misunderstanding of how inverter generators work. When the eu2000i, for instance, is idling it may sound like 500 RPM but its idle speed is actually 3,000 RPM, darn close to that more-efficient 3,600 RPM, and the RPMs only go up from there into even more efficient territory.

Actually, the highest BSFC (fuel efficiency) is typically achieved at or near peak torque at WOT (wide open throttle). On the Honda GX200, that's close to 2500 RPM. Above or below with partial throttle openings and BSFC drops, due to poor volumetric efficiency.

pianotuna wrote:
Hi Wayne,

Is the "sneeze" there with eco switch on (i.e. fuel saving enabled)? Any idea of the voltage drop during the "sneeze"?

That's one reason I chose the Yamaha 3000 iSEB--hoping that the 500 watt boost would be better on "sneeze" (and on voltage drop, too).

I had the opportunity to play with Yamaha's 3000iSEB. Their 'boost' technology is to briefly pull surges directly from the on-board battery. Nifty idea, but there's a potential problem. Leave your 3000iSEB sit unattended in the garage for a few months causing the battery degrade,... and boost suddenly disappears.

-kenny-