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Gear-shifting control method for parallel mixed powder system

A technology of hybrid power system and shift control, which is applied in joint control, hybrid vehicles, traction driven by engines, etc., to improve driving comfort and ensure the effect of shifting process

Inactive Publication Date: 2003-08-27
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing powertrain controllers do not have the function to cooperate with the automatic mechanical transmission to complete the gear shifting operation

Method used

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  • Gear-shifting control method for parallel mixed powder system

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing, the implementation of the present invention is further described as follows:

[0012] After receiving the shift request signal from the automatic mechanical transmission, the powertrain controller of the parallel hybrid electric vehicle enters into the shift control service program. The assembly controller first judges the driving mode of the current hybrid electric vehicle, and enters the corresponding shift control process according to different driving modes.

[0013] When the engine and the motor are jointly driven, the assembly controller first instructs the engine to reduce the output power, that is, reduce the engine throttle, and set the output power of the motor to zero, and then wait for the automatic mechanical transmission to disconnect the clutch and change the gear position signal ; When the gear signal changes from a neutral gear to a non-neutral gear, that is, the non-neutral gear is the target gear when th...

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Abstract

The gear-shift control method for parallelly-connected mixed power system includes the gear-shifting operation control step of power assmelby controller under the four conditions of engine single drive, dynano single drive, engine and dynamo combined drive and engine drives dynamo to make it generate power. It is characterized by that the described gear-shifting control method includes: when the automatic mechanical speed changer is used to engage a gear, the power assembly controller can implement speed-regulating control step of dynamo, and when the automatic mechanical speed changer clutch is engaged, the power assembly controller can implement speed-regulating control step of enige. Said invention adopts the power assembly controller and automatic mechanical speed changer combined gear-shifting control process to ensure smooth gear-shifting operation and raise the driving comfortability.

Description

(1) Technical field [0001] The invention relates to the driving control technology of an electric vehicle, which is suitable for a parallel hybrid system hybrid vehicle adopting an automatic mechanical transmission. (2) Background technology [0002] Compared with traditional automobiles, electric vehicles (EV, Electric Vehicle) that meet increasingly stringent automobile emission regulations are the ultimate direction of automobile development. Due to the performance and price of power batteries, the development of pure electric vehicles has not achieved the expected results. Hybrid Electric Vehicle (HEV, Hybrid Electric Vehicle), which is between traditional vehicles and pure electric vehicles, is the research and development focus of many automobile companies in the world due to its low investment, strong implementation, and easy compliance with future emission regulations and energy-saving requirements. . [0003] The so-called hybrid electric vehicle (HEV) is the comb...

Claims

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Application Information

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IPC IPC(8): B60L15/00B60L15/32B60L50/10B60W20/30
CPCY02T10/7077Y02T10/7072
Inventor 张欣李国岫宋建锋
Owner BEIJING JIAOTONG UNIV
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