John_Mc
Elite Member
- Joined
- Aug 11, 2001
- Messages
- 4,564
- Location
- Monkton, Vermont
- Tractor
- NH TC33D Modified with belly pan, limb risers & FOPS. Honda Pioneer 520 & antique Coot UTV
That auto-throttle is a great way to shorten the life of equipment that is sensitive to low start up voltage.
Certainly it's better for the engine to be warmed up before putting a load on it. However, even after the engine is warmed up and has been powering a load, if the load is shut off, so the auto-throttle engages and the engine slows to idle, adding a load back on again can be a problem. On a non-inverter based generator, the auto-throttle works by sensing that a load has been applied and bringing the engine up to speed (in most cases up to 3600 RPM). Without a load, a non-inverter generator with the auto-throttle on is not putting out 60 Hz / 110-120 VAC, and for the time it takes to spin up to speed, it's feeding garbage to whatever is drawing the load.I believe your not supposed to turn on the auto throttle until after the engine has been running and charging.
I generally don't use the auto-throttle on my generator (a non-inverter model). I manage loads in order to get by with a smaller generator (alternating starting up refrigerator, freezer, and well pump for example). If I did have the auto-throttle engaged, and it had brought the engine down to idle during a period of dis-use, I would flick on a non-critical load, such as a light to spin the generator up before engaging something more sensitive. Even then, the generator will lug down briefly when starting a heavy load, such as my well pump, but the period and intensity is greatly reduced if it's not spinning up from idle. The auto-throttle is kind of a moot point for me anyway: If I have the generator running, I've got some kind of load on it. If I don't have a load for a significant period of time, I shut it off.
Inverter-based generators are a bit of a different story: the inverter puts out 60 Hz /110-120 VAC regardless of how fast the engine is spinning. It continuously varies the engine speed to provide more or less power as needed to match a varying load.