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Start coordinative control method of double-planet-row hybrid electric vehicle

A hybrid electric vehicle, double planetary row technology, applied in hybrid electric vehicles, motor vehicles, control devices, etc., can solve the problems of complex control and high hardware cost

Active Publication Date: 2017-02-22
江西鼎盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

GM's hybrid electric vehicle needs to install an independent sensor to monitor the engine top dead center signal in real time in the start control, and also uses a torsional shock absorber with a bypass connection, which has high hardware costs and complicated control

Method used

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  • Start coordinative control method of double-planet-row hybrid electric vehicle
  • Start coordinative control method of double-planet-row hybrid electric vehicle
  • Start coordinative control method of double-planet-row hybrid electric vehicle

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Experimental program
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Embodiment 1

[0061] figure 2 It is a flow chart of starting coordinated control for a dual-planetary hybrid vehicle.

[0062] A method for coordinating the start of a dual-planetary hybrid electric vehicle is carried out in the following steps:

[0063] Ⅰ The wheel demand torque calculation sub-module calculates the expected wheel torque based on the current vehicle speed and accelerator pedal opening; the starting demand decision-making sub-module obtains the starting demand based on the current power battery power, engine cooling water temperature and wheel expected torque , if the starting demand is yes, proceed to step II and step III, otherwise the vehicle maintains pure electric mode operation;

[0064] Ⅱ The current actual engine speed is processed by the filter to obtain the filtered engine speed, and the expected engine fuel injection speed look-up table sub-module checks the engine cooling water temperature and the expected engine fuel injection through the interpolation outer ...

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Abstract

The invention provides a start coordinative control method of a double-planet-row hybrid electric vehicle. The method includes the steps of obtaining wheel rim expected torque according to vehicle information, then judging whether a start request exists or not, if yes, judging whether a whole vehicle controller sends out an oil spraying instruction or not according to the expected engine oil spraying rotating speed obtained through the engine cooling water temperature, obtaining the expected engine torque according to the vehicle speed and the accelerator pedal opening degree, inputting the expected engine torque to an engine controller to be executed, obtaining the final expected engine angular acceleration through processing according to the vehicle information, obtaining the limited wheel rim expected torque according to the obtained information and data, and processing the limited wheel rim expected torque, the final expected engine angular acceleration and the vehicle information to obtain large / small motor expected torque, inputting the large / small motor expected torque to the motor controller to be executed, and repeatedly executing the steps till the vehicle is started. The control method is simple and high in practicability and can relieve the starting impact problem.

Description

technical field [0001] The invention relates to a method for coordinating the starting of a vehicle, in particular to a method for coordinating the starting of a dual-planetary row hybrid electric vehicle. Background technique [0002] What used on the hybrid vehicle in the present invention is double planetary row hybrid transmission (applied for invention patent (patent name is double planetary row four-axis hybrid transmission device, patent No. is 200910194470.5), its main components include: engine, Torsional damper, small motor, large motor, double planetary row, first brake, second brake, transmission system and complete vehicle. The engine is connected to the planet carrier of the double planetary row through the torsional shock absorber, and the small one in the double planetary row The sun gear is connected with the small motor, the large sun gear is connected with the large motor, the first brake is connected with the planet carrier, the second brake is connected ...

Claims

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Application Information

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IPC IPC(8): B60W20/10B60W30/18B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W30/18027B60W2510/0638B60W2510/0676B60W2510/081B60W2510/244B60W2520/10B60W2540/10B60W2710/0666B60W2710/083Y02T10/62
Inventor 王晨钟发平张彤于海生程辉军刘国志
Owner 江西鼎盛新材料科技有限公司
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