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Intelligent automatic-transmission matching method on basis of working conditions and driving intention

A technology of automatic transmission and matching method, applied in the direction of elements with teeth, transmission control, belt/chain/gear, etc., can solve problems such as road conditions and driving intentions, and achieve good drivability , low overall fuel consumption

Inactive Publication Date: 2014-08-06
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research on road conditions and driving intentions is also rare

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Under the working conditions of different driving intentions, different shift gauges are adopted to meet the needs of vehicle performance. For example, when the vehicle is driving on a 5% gradient, when the throttle is opened and charged to 20%, the target speed ratio is 0.5, the target engine speed is 2400r / min, and the target vehicle speed is 90km / h. By comparing the gear ratio, engine speed, and vehicle speed with the target value, it is possible to verify whether the shift recognition and shift schedule are correct.

[0019] Use different drivers and driving habits, different road surfaces, different loads, and vehicles with different displacements to conduct tests, collect vehicle speed, vehicle acceleration, engine torque, engine speed, transmission speed ratio, accelerator opening, and changes in accelerator opening rate, throttle opening, throttle opening change rate, braking signal and other signals. Only one of the parameters is changed in each test. For exam...

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Abstract

The intelligent matching method of automatic transmission based on the recognition of working conditions and driving intentions includes the following steps: data collection of driving habits and working conditions: data analysis, modeling and simulation: recognition algorithm, data model and shift schedule integration: real vehicle verification: In the present invention, the vehicle can automatically adapt to different driving habits and working conditions, and can have better drivability and lower comprehensive fuel consumption under different working conditions. Dynamic shift schedule. On the basis of studying the technology of the engine and transmission itself, according to different driving habits and driving conditions, the corresponding shift strategy is provided.

Description

technical field [0001] The invention relates to a matching method for a vehicle automatic transmission, in particular to an intelligent matching method for an automatic transmission based on recognition of working conditions and driving intentions. Background technique [0002] An important part of the core control technology of the automatic transmission controller (TCU) is based on a certain technical basis, and it is an innovation of the powertrain matching method based on the construction of the TCU control system. To put it simply, for automatic transmission matching, in addition to considering the economy and power of the vehicle, it is also necessary to consider the adaptability and drivability of the vehicle. The intelligent matching theory of automatic transmission based on the recognition of working conditions and driving intentions and There are no relevant patents and literature reports in the literature of method research. Research on road conditions and drivin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/00F16H61/02
Inventor 张飞铁周云山蔡源春张军
Owner HUNAN UNIV
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