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Multi-factor integrated parametric design method for power split hybrid bus

A technology of hybrid power and comprehensive parameters, applied in calculation, electrical digital data processing, special data processing applications, etc., can solve the problems of not revealing the general guiding principles of the power split system, difficult to apply, etc., to achieve good vehicle dynamic performance and high energy efficiency Effect

Active Publication Date: 2017-12-19
CHINA UNITED ENG
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Problems solved by technology

In addition, although some optimized parametric design methods optimize fuel economy and dynamic performance, they have not yet revealed general guidelines for the parametric design of power split systems, especially for power split urban bus systems
Moreover, the optimal method is often time-consuming or simplified by linear approximation, which is difficult to apply in engineering practice

Method used

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  • Multi-factor integrated parametric design method for power split hybrid bus
  • Multi-factor integrated parametric design method for power split hybrid bus
  • Multi-factor integrated parametric design method for power split hybrid bus

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0047] 1. First, a detailed description of the power split system is given.

[0048] The configuration of the power split system is as figure 1 shown. The system consists of two PG groups, the front PG group and the rear PG group.

[0049] The front PG group is a power split transmission (PSD), and the front PG group is provided with a front sun gear 2 , a front planetary carrier 3 , and a front gear ring 4 .

[0050] The rear PG group is a reducer with a fixed gear ring. The rear PG group is provided with a rear sun gear 8 , a rear planet carrier 9 and a rear gear ring 6 . Rear gear ring 6 is fixedly arranged.

[0051] The engine output shaft is connected to the front planet carrier 3. Generator one MG1 is co...

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Abstract

The present invention provides a multi-factor integrated parametric design method for a power split hybrid bus, and power supply efficiency, transmission efficiency, vehicle ride-through cycle requirements and main control strategies are taken into account in the method. The multi-factor integrated parametric design method for the power split hybrid bus comprises the following steps: (1) selecting a reasonable engine control strategy; (2) selecting an engine based on the steady-state operation requirement, wherein the step comprises: carrying out theoretical calculation on the output power of the engine and verifying whether the power of the engine can meet the power requirement under most driving cycle conditions; (3) determining the characteristic ratio of a former PG group according to the transmission efficiency and the working performance of the vehicle, wherein the step is: determining the boundary of the characteristic ratio of the former PG group, and obtaining an optimal characteristic ratio of the former PG group based on the transmission efficiency of the power split system and the working performance of the vehicle; and (4) determining other components of the power split system according to the dynamic performance and operation requirements.

Description

technical field [0001] The invention relates to a multi-factor comprehensive parameterized design method for a power-split hybrid electric passenger car. Background technique [0002] As people pay more and more attention to environmental pollution and energy crisis, the development of hybrid and pure electric vehicles has been paid more and more attention. A hybrid system often consists of one or two planetary gear sets and three power sources, also known as a power split system or a power split hybrid system. [0003] The power split system combines the advantages of series and parallel systems, and has excellent dynamic performance and fuel economy, as shown in the Chinese patent application number 201520191476.8. The early research of power-split hybrid power system mainly focused on the analysis and testing of some hybrid electric vehicle products. And the design of the power split system is also a research hotspot, because it is the basis of optimal control and optim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/17G06F2111/04Y02E60/00
Inventor 高涛
Owner CHINA UNITED ENG
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