Power-driven system for large-scale oil-electricity hybrid power road sweeper and control strategy thereof

Abstract

The invention discloses a power-driven system for a large-scale oil-electricity hybrid power road sweeper and a control strategy of the power-driven system for the large-scale oil-electricity hybrid power road sweeper. The power-driven system for the large-scale oil-electricity hybrid power road sweeper comprises: power of an engine is delivered by a transmission, the power is switched between an operation system and a running system through a power switching device, one end of a battery pack is connected with a 220V charger, the other end of the battery pack is connected with an electrical machine, the coupling is carried out on the electrical machine and the power, switched to the running system through the power switching device, of the engine through a torsion coupler, and the power is output to a driving wheel. By using the power system to drive the system, the power system only needs one engine, and the power of the engine equivalent to the power of an assistant engine of an original vehicle. Under the mode of the cleaning and the transition, the engine is capable of operating at a higher load rate. The fuel economy and the discharge are clearly improved.

Description

Technical field [0001] The invention relates to the field of road sweeping vehicles, and is a power drive system of a large-scale hybrid electric road sweeping vehicle and its control strategy. Background technique [0002] As a kind of sanitation equipment, road sweeper is an efficient cleaning equipment that integrates road cleaning, garbage recycling and transportation. With the rapid development of urban roads in my country, the market prospects for road sweepers are broad. Traditional sweepers are mostly modified on the chassis of second-class cars, equipped with two engines. Only the main engine works and the auxiliary engine is idle during transfer transportation; during the cleaning operation, the main engine load rate is very low, fuel economy and emissions are very poor, and the two engines work at the same time, causing loud noise. On a large road sweeper, the power of the two engines is large, and the cost of the whole vehicle is high, which also brings certain diff...

AI Technical Summary

Problems solved by technology

During transport, only the main engine works, and the auxiliary engine is idle; during cleaning operations, the load rate of the main engine is very low, fuel economy and emissions are very poor, and the two engines work at the same time, making a lot of noise

On a large road sweeper, the power of the two engines is very large, and the cost of the whole vehicle is high, which also brings certain difficulties to the chassis layout.

[0003] As a new energy sanitation vehicle, a pure electric sweeper has been applied in some cities. It is powered by a battery pack during work, does not consume fuel, can achieve zero emissions, and has low noise. However, due to high cost and continuous working time Short and other issues, currently only limited to small sweepers or pure sweeper sweepers

[0004] Compared with pure electric sweepers, extended-range electric sweepers can reduce the manufacturing cost of the whole vehicle and prolong the continuous working time to a certain extent, and can be applied to small and medium-sized sweepers, but large-scale road sweepers require more cleaning capacity. Relatively high, the power demand of the operating system (especially the fan) is very large, if the range-extending technology is adopted, the cost of implementation is still high

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