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

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

Inactive Publication Date: 2012-07-11
HUNAN UNIV
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  • Summary
  • Abstract
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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

An intelligent automatic-transmission matching method on the basis of working conditions and driving intention includes the following steps of acquiring data of driving habits and working conditions; analyzing data, modeling and emulating; integrating the recognition algorithm and the data models with the gear shifting schedules; and finally testing on vehicles. By the intelligent automatic-transmission matching method on the basis of working conditions and driving intention, vehicles can be adaptable to different driving habits and working conditions automatically and have high drivability and low combined oil consumption on different working conditions. The intelligent automatic-transmission matching method can accord with the gear shifting schedules having requirements to drivability, economy and dynamic property simultaneously, and thereby corresponding gear shifting schedules can be provided according to different driving habits and driving conditions on the basis of researching technologies of engines and transmissions.

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 Applications(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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