Power generation system of Atkinson cycle engine

Abstract

The invention provides a power generation system of an Atkinson cycle engine. The power generation system comprises the Atkinson cycle engine and an outer rotor generator, wherein the Atkinson cycle engine comprises an air cylinder body, an air cylinder cover connected with the air cylinder body, a piston connecting rod mechanism arranged in the air cylinder body and a crankshaft connected with the piston connecting rod mechanism; the outer rotor generator is directly connected with the crankshaft for power generation and comprises an inner stator, an outer rotor sleeving the inner stator and an outer rotor bracket for supporting the outer rotor; the inner stator is fixedly connected with the air cylinder body; the outer rotor is fixedly arranged on the circumference of the outer rotor bracket; and the center of the outer rotor bracket is directly connected with an output end of the crankshaft. The outer rotor of the outer rotor generator is directly connected with the crankshaft of the Atkinson cycle engine, so that heavy flywheels used by a traditional engine are omitted; the outer rotor in the whole system acts as the outer rotor of the generator, simultaneously acts as an energy storage component of the engine, has double effects and plays a role in reducing the weight of the power generation system; and meanwhile, the number of spare parts is also reduced.

Description

technical field [0001] The invention relates to the field of range extenders for electric vehicles, in particular to a power generation system. Background technique [0002] Energy shortage and climate warming have become global problems. Electric vehicles have the characteristics of a wide range of energy sources, simple structure, high energy utilization efficiency and low emissions. The government and automobile companies have invested a lot of resources in research and development and promotion. However, the main problems of electric vehicles at present are: low battery energy density, short cruising range, long charging time and less facilities, and high battery cost and short life. Extended-range electric vehicles can just solve these problems and are the most ideal transition solution. [0003] The electric vehicle range extender system is mainly composed of an engine and a generator. When the battery power is lower than the predetermined value, the engine starts t...

AI Technical Summary

Problems solved by technology

However, the main problems of electric vehicles at present are: low battery energy density, short cruising range, long charging time and less facilities, and high battery cost and short life

Exhaust manifolds of traditional gasoline engines are designed and manufactured separately, which increases the number of parts, weight and cost, and is not convenient for space layout

[0005] Most of the existing range extender systems for electric vehicles manufacture the engine and generator independently, and then install the generator directly on the engine, without targeted design, the engine and generator cannot be well matched

In addition, the existing range extender systems basically use internal rotor generators, and the range extender engine must be equipped with a flywheel mechanism to store enough kinetic energy to ensure that the compression stroke piston can reliably rebound to the top dead center, which is not conducive to reducing the number of parts and reducing the number of parts. Heavy

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