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Shift strategy correction method and system based on driving intention

A shift strategy and driving intention technology, applied in the field of shift strategy correction based on driving intention, can solve problems that cannot be corrected, and can not better balance economic and power performance requirements, so as to improve rationality, improve user experience, The effect of improving economy and power

Active Publication Date: 2021-04-30
SHENGRUI TRANSMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the automatic mode, it is still impossible to correct the shift map through the analyzed driving intention, and further, for the driver, it is impossible to better balance the performance requirements of economy and power.

Method used

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  • Shift strategy correction method and system based on driving intention
  • Shift strategy correction method and system based on driving intention
  • Shift strategy correction method and system based on driving intention

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 1 It is a flow chart of the method for modifying the shift strategy based on driving intention provided by Embodiment 1 of the present invention.

[0058] refer to figure 1 , the shift strategy correction method based on driving intention includes the following content:

[0059] Step S100, calculating the idle time T during which the intense driving flag is in the idle state IDLE ;

[0060] Step S200, when the idle time T IDLE greater than the set time T CAL1 , according to the driving speed and accelerator conditions to identify the activation state of the intense driving flag, and accumulate the number of times N of intense driving within the current driving mileage;

[0061] Step S300, when the mileage in the current period satisfies the set value, calculate the shift correction coefficient k in the current period according to the times of intense driving n ;

[0062] Step S400, the current shift correction coefficient k n Combined with the compensatio...

Embodiment 2

[0064] In step S200 of the method for modifying gear shift strategies based on driving intentions, the activation state of the aggressive driving flag is identified according to the driving speed and accelerator conditions, and the number N of intense driving within the current driving mileage is accumulated, which is achieved through the following process:

[0065] When the idle time is greater than the set time, judge whether the activation state of the aggressive driving flag is activated according to the driving speed and accelerator conditions;

[0066] If so, the number of times the aggressive driving flag is activated is accumulated to obtain the number of times of intense driving.

[0067] Specifically, the process of judging whether the activation state of the aggressive driving flag is activated includes:

[0068] First, when the shift lever is in the forward gear and the shift mode is AUTO, the driving speed of the vehicle is collected.

[0069] Secondly, judge whe...

Embodiment 3

[0096] image 3 It is a schematic diagram of a system for correcting shift strategies based on driving intentions provided by Embodiment 3 of the present invention.

[0097] This embodiment provides a system for correcting a shift strategy based on driving intention, which is used to implement the method for correcting a shift strategy based on driving intention in the above embodiments. refer to image 3 , the shift strategy correction system based on driving intention mainly includes the following units:

[0098] The timing unit 100 is used to calculate the idle time when the intense driving flag is in the idle state;

[0099] The counting unit 200 is used to identify the activation state of the intense driving flag according to the driving speed and accelerator conditions when the idle time is greater than the set time, and accumulate the times of intense driving within the current driving mileage;

[0100] The factor calculation unit 300 is used to calculate the current...

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Abstract

The invention provides a method and system for correcting shift strategy based on driving intention, which relates to the technical field of automobile gearboxes, including: calculating the idle time during which the intense driving flag is in the idle state; when the idle time is greater than the set time, according to the driving speed and Acceleration conditions identify the activation state of the aggressive driving flag, and accumulate the number of times of intense driving within the current mileage; when the current mileage meets the set value, calculate the current gear shift correction coefficient according to the number of intense driving times; the current gear shift correction coefficient Combined with the compensation offset value, the original automatic shift map is corrected to obtain the shift strategy. On the basis of not increasing any hardware cost of the whole vehicle, the present invention can analyze the intense driving state through the throttle opening and the change of the throttle opening, and then modify the shift strategy, so as to improve the rationality and flexibility of the modified shift strategy, and improve the Driving economy and power, improving user experience.

Description

technical field [0001] The invention relates to the technical field of automobile gearboxes, in particular to a method and system for correcting shift strategies based on driving intentions. Background technique [0002] The shift map of the automatic transmission can be divided into sports mode and economic mode according to different driving modes, so as to meet the driving habits of different drivers. The sports mode focuses on power, the economy mode focuses on economy, and the automatic mode takes into account both power and economic performance, but different shift modes need to be activated through switches. The vast majority of drivers do not select different shift maps through the mode switch, but reflect the driving needs through the throttle opening. [0003] At present, in the automatic mode, it is still impossible to correct the shift map through the analyzed driving intention, and then, for the driver, it is impossible to better balance the performance require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/19
CPCB60W30/19
Inventor 郭伟程云江高龙范维栋鲁曦
Owner SHENGRUI TRANSMISSION