Engine of extended-range electric vehicle and electric vehicle thereof

Abstract

The invention discloses an engine of an extended range electromobile and the electromobile. The engine is a piston engine; a crank of the engine is located in a crank case; and the two ends of the crank extend out of the crank case and are at least directly connected with a power generator of the electromobile. According to the engine, a direct-connection transmission structure is adopted, compared with the prior art, the engine has the advantages of high transmission efficiency, compact structure and reduced transmission system weight, reduces energy consumption and saves manufacturing and use costs; the two ends of the crank extend out of the crank case, so that more power-driven components such as an air conditioner compressor, an oil pump and a water pump can be driven; the transmission efficiency is improved; the whole automobile is small in size and light in weight; the working condition of the engine is adaptable to the required working condition of the extended range electromobile; the working efficiency is improved; the energy source is saved; the engine emission is reduced effectively; the production cost and the operating cost are lowered; and the engine is applicable to small and light vehicles and is specially used for the extended range electromobile.

Description

technical field [0001] The invention relates to a motor vehicle component and its electric vehicle, in particular to an engine of an extended-range electric vehicle and its electric vehicle. Background technique [0002] The power system of the extended-range electric vehicle is composed of a power battery system, a power drive system, a vehicle control system and an auxiliary power unit (APU); the vehicle controller completes the operation control strategy. The battery pack can be charged by ground charging piles or vehicle chargers, and the charging power is generated by the generator driven by the engine, and the engine can be fuel type or gas type. [0003] In the prior art, the engines used in the range-extended electric vehicles all adopt existing motor vehicle engines or general-purpose engines, and no special engine suitable for the range-extended electric vehicles has been developed. [0004] The use of existing engines has the following disadvantages: the existing...

AI Technical Summary

Problems solved by technology

[0004] The use of existing engines has the following disadvantages: the existing engines are all high-speed machines, and the maximum power and torque appear at about 6500-8500r / min. Used on extended-range electric vehicles, resulting in low work efficiency and high cost of use

High energy waste and other disadvantages; moreover, the original machine design has transmission mechanism, speed change mechanism, starting mechanism and other devices, and the range-extended electric vehicle engine does not need the above structure because it does not belong to the vehicle drive structure. The commonly used method is in The original machine was improved during use, but none of the improvements could achieve the optimal effect, which made the entire engine complex in structure, large in size and heavy in weight, resulting in high production and operating costs, waste of driving energy, and serious waste of resources; Vehicle design principles that are not conducive to miniaturization and light weight

[0005] Especially when using a general-purpose engine, because its structural design is not suitable for vehicle use, when driving under complex road conditions, it will cause problems such as poor lubrication of engine mechanisms and poor fuel supply, and the driving noise and vibration are large, making the ride comfortable degree difference

[0006] Therefore, it is necessary to improve the engine of the existing range-extended electric vehicle so that its working conditions are compatible with the demand conditions of the extended-range electric vehicle, improve work efficiency, save energy, reduce production costs and operating costs, and are suitable for miniaturization. , Lightweight vehicle use; avoid the poor adaptability of the engine to the driving environment of complex road conditions in the prior art, and increase the comfort of driving

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