Automated mechanical transmission (AMT) optimal power gear shifting system and gear shifting method of hybrid-power bus

A hybrid and optimal power technology, applied in hybrid vehicles, motor vehicles, vehicle components, etc., can solve problems such as difficult control, increase the complexity of shifting strategies, etc., and achieve the effect of fully utilizing the power performance

Inactive Publication Date: 2016-06-08
清华大学苏州汽车研究院(吴江)
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In a hybrid vehicle, the influence of the electric drive system must also be considered, which greatly increases the complexity of the shift strategy and makes it difficult to apply it to the actual vehicle control

Method used

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  • Automated mechanical transmission (AMT) optimal power gear shifting system and gear shifting method of hybrid-power bus
  • Automated mechanical transmission (AMT) optimal power gear shifting system and gear shifting method of hybrid-power bus
  • Automated mechanical transmission (AMT) optimal power gear shifting system and gear shifting method of hybrid-power bus

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Embodiment Construction

[0026] like figure 1 and 2 As shown, the hybrid electric bus AMT optimal power shift system disclosed by the present invention is suitable for plug-in parallel hybrid electric passenger cars, and the plug-in parallel electric hybrid electric passenger cars include engine, motor, gearbox ATM and complete vehicle The controller, the engine and the motor are connected by an automatic clutch, and the gear shift system integrates the input shaft of the gearbox AMT and the output shaft of the motor, which not only improves the reliability, reduces the weight of the vehicle, but also reduces the cost , is also a typical characteristic of the system. The vehicle controller HCU is respectively connected to the engine control unit ECU, motor control unit MCU and transmission control unit TCU through the CAN bus; the driver expresses the control intention to the vehicle controller through the pedal and the joystick, and the vehicle controller HCU controls the engine Accelerator opening...

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Abstract

The invention discloses an automated mechanical transmission (AMT) optimal power gear shifting system and a gear shifting method of a hybrid-power bus. The hybrid-power bus comprises an engine, a motor, an AMT and a hybrid control unit. The engine is connected with the motor through an automatic clutch. An input shaft of the AMT and an output shaft of the motor are designed into a whole. The hybrid control unit (HCU) is connected with an engine control unit (ECU), a motor control unit (MCU) and a transmission control unit (TCU) through a controller area network (CAN) bus. The HCU conducts coordination control on the accelerator opening degree of the engine, the torque of the motor, the divide-compound state of the automatic clutch, and gear shifting executing action. According to the AMT optimal power gear shifting system and the gear shifting method of the hybrid-power bus, the characteristics, different from a traditional bus, of a hybrid-power system are combined, and a dynamic gear shifting law which is matched with the plug-in type hybrid-power bus to a greater extent is set; and compared with an existing gear shifting law, the optimal dynamic gear shifting law is adopted for controlling gear shifting, and thus the dynamic performance of the hybrid-power bus can be utilized sufficiently.

Description

technical field [0001] The invention relates to the control of a hybrid electric vehicle, in particular to an AMT optimal power shift system and a shift method for a hybrid electric passenger car. Background technique [0002] The plug-in hybrid power system includes an engine drive system and an electric motor drive system, which are one more set than conventional vehicles. Since the working state of the motor is constantly adjusted with the change of working conditions, it affects the working state of the engine and indirectly affects the research work of the shifting schedule. In addition, due to the addition of the electrical system, the distribution of mass and load will also change greatly, and the dynamic performance of the vehicle will also be affected. Based on the above analysis, the shift schedule of hybrid electric vehicles has its own characteristics, and it needs to be improved and innovated according to its own characteristics. [0003] The gear shifting rul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/30
CPCB60W20/30B60W2510/081B60W2520/10B60W2540/10
Inventor 李翠连韩晓东赵建彪万仲
Owner 清华大学苏州汽车研究院(吴江)
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