What is the throttle control principle of small gasoline generators?
2 Answers
Gasoline generators determine the engine speed based on the generated voltage. There is a voltage comparison automatic device on the throttle of the gasoline engine. When the voltage is less than 220 volts, it automatically increases the throttle, and when the voltage exceeds 220 volts, it automatically decreases the throttle to ensure the output voltage remains at 220 volts. Below is the relevant introduction: Components of a gasoline generator: Gasoline generators are typically composed of components such as the stator, rotor, end cover, and bearings. The engine is a machine that converts chemical energy into mechanical energy. This conversion process is essentially the working cycle, simply put, it involves burning fuel in the cylinders to generate kinetic energy, driving the pistons in the engine cylinders to reciprocate. This, in turn, drives the connecting rods attached to the pistons and the cranks connected to the rods to perform reciprocating circular motions around the crankshaft center, thereby outputting power. Composition of stator and rotor: The stator consists of the stator core, winding coils, frame, and other structural components that hold these parts in place. The rotor is composed of the rotor core (or magnetic poles, yoke), windings, retaining rings, center rings, slip rings, fan, and shaft.
I've been operating small generators and found the throttle control principle quite intuitive: it mainly involves using a mechanical knob or electronic regulator to control the fuel valve in the carburetor. The engine speed depends on the air-fuel mixture ratio; opening the throttle wider increases the mixture volume, naturally raising the RPM to maintain the generator's stable output voltage (e.g., 220V/50Hz). If the load changes (such as adding more appliances), the throttle will automatically or manually increase to compensate for the speed. Relatedly, I often help friends repair such systems; if the throttle response is sluggish, it might be due to a stuck cable or dust blockage—regular lubrication can prevent issues. Remember, avoid sudden throttle adjustments on hot days, as this can easily cause engine overheating. Overall, understanding this principle not only enhances operational safety but also extends the machine's lifespan—don’t underestimate the role of this small knob.
