Petrol generator set

Abstract

A petrol generator set comprises a petrol engine and an AC generator. The petrol engine comprises a throttle valve and a fuel injector. The petrol generator set also comprises an electrically controlled speed stabilizing device connected with the petrol engine. The speed stabilizing device comprises a revolution speed sensor and an engine controller. The revolution speed sensor is used for obtaining the revolution speed information of the petrol engine. The engine controller is connected with the revolution speed sensor and the fuel injector of the petrol engine. The engine controller is used for producing fuel injecting control signals to the fuel injector according to the revolution speed information obtained by the revolution speed sensor, and the fuel injecting amount of the fuel injector is increased or reduced to make the revolution speed of the petrol engine keep stable. As a consequence, the petrol engine can still keep stable revolution speed during high-speed running, and the stable output voltage frequency is ensured when large power is output.

Description

technical field [0001] The invention relates to a gasoline generator set. Background technique [0002] At present, most of the generator sets sold in the market are diesel generator sets. However, there are such problems in diesel generator sets: the cost of diesel is relatively high; When the generator set is running, it will generate a lot of noise. In contrast, gasoline generator sets are favored by people because of their advantages such as cheaper gasoline, less noise during power generation, easy starting, and low manufacturing cost. Therefore, gasoline generator sets are being used more and more. [0003] At present, gasoline generating sets with a power below 20KW are more common, while gasoline generating sets above 20KW are relatively rare. This is because, taking an output frequency of 50 Hz as an example, the generator part of a general diesel generator set is a four-pole generator with a speed of about 1500 rpm, which is relatively low and easy to manufactur...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the generator sets sold in the market are diesel generator sets. However, there are such problems in diesel generator sets: the cost of diesel is relatively high; When the generator set is running, it will generate a lot of noise

For example, for a gasoline generator with high power output, the rotor of the generator will be subject to a large centrifugal force under high speed conditions, which may easily lead to damage

And, under the condition of high speed, the instability of the engine speed will cause the output frequency of the generator to be unstable, which will affect the normal operation of the load

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