A cruise mode control method for a hybrid electric vehicle
A hybrid vehicle, hybrid mode technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the lack of a systematic evaluation method for cruise control modes, unfavorable vehicle economy improvement, and inability to guarantee efficient driving modes And other issues
Active Publication Date: 2020-11-03
JILIN UNIV
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Problems solved by technology
[0003] Investigate the related research on cruise control. At present, the research on cruise control is mostly aimed at traditional vehicles, and the research on cruise control for hybrid vehicles is gradually developing. The current technical deficiencies exist: the cruise control mode lacks a systematic evaluation method. Efficient driving mode cannot be guaranteed during stop-and-go, which is not conducive to improving the economy of the vehicle
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[0032] Embodiments of the present invention are described in detail below, and the analysis results of the embodiments are shown in the accompanying drawings, and the embodiments described below by referring to the accompanying drawings are exemplary, are only used to explain the present invention, and cannot be interpreted as Limitations on the Invention. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0033] Such as figure 2 As shown, it is a schematic diagram of the power system of the hybrid electric vehicle under study, including two power sources of engine 5 and motor 7, which can realize various working modes, including pure electric mode, hybrid mode and engine direct drive mode.
[0034] When the clutch 6 is disconnected, the motor provides the required power of the vehicle, which is a pure electric mode; when...
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The invention provides a cruise mode control method of a hybrid power vehicle. The cruise mode control method includes the following steps of firstly, determining that the vehicle enters the cruise state according to the operations of a driver, if there is no vehicle in front, setting the vehicle speed at a cruise target set point by the driver, and if there is a vehicle in front, following the vehicle in front at a target vehicle speed; secondly, calculating the required power value and the efficiency in all working modes according to the target vehicle speed, detecting the distance from thevehicle in front, the vehicle speed of the vehicle in front and the current vehicle speed of the hybrid power vehicle, and calculating the deviation between the cruise target vehicle speed and the current vehicle speed; thirdly, collecting the current battery SOC value in a battery management system and the failure state fed back by parts. By selecting evaluation factors and designing a fuzzy comprehensive evaluation model, the current cruise mode is determined. The method is high in systematicness and integrates the cruise economy and safety.
Description
technical field [0001] The invention belongs to the technical field of cruise control of hybrid electric vehicles, in particular to a cruise mode control method of hybrid electric vehicles. Background technique [0002] The increasingly urgent demand for energy saving and emission reduction, as well as the insufficient battery capacity and safety technology, have promoted the development of hybrid electric vehicles. Since hybrid electric vehicles have multiple power sources, each power source is coupled with each other to produce multiple working modes, which is reasonable Switching operating modes has a significant impact on vehicle economy. In order to improve the economy of automobiles and make driving easier for drivers, automobile cruise control has developed rapidly in recent years. It mainly includes constant speed cruise and adaptive cruise, in which constant speed cruise keeps the vehicle at a fixed speed, the driver does not need to actively control the accelerato...
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IPC IPC(8): B60W30/14B60W20/20B60W10/26
CPCB60W10/26B60W20/20B60W30/14B60W30/143
Inventor 宋大凤孙楚琪曾小华云千芮孙可华李广含王振伟王星琦
Owner JILIN UNIV