Control method for improving vehicle acceleration power response

A technology of dynamic response and control method, which is applied in the direction of transmission control, components with teeth, belt/chain/gear, etc., which can solve problems such as frequent shifting, no consideration of sliding upshifts, and reduced acceleration power

Pending Publication Date: 2022-07-29
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of improving the dynamic performance of rapid acceleration conditions, most of them optimize the downshift speed, increase the throttle opening and torque compensation. When the throttle is increased, the vehicle will accelerate in a higher gear or lower the gear before accelerating, which will easily lead to frequent gear shifting and significantly reduce the acceleration power

Method used

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  • Control method for improving vehicle acceleration power response
  • Control method for improving vehicle acceleration power response
  • Control method for improving vehicle acceleration power response

Examples

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Embodiment

[0076] A control method for improving the acceleration response of the vehicle under the acceleration condition after the vehicle has been rapidly withdrawn, such as figure 1 shown, the steps are as follows:

[0077] ①Real-time monitoring of accelerator opening and change rate, vehicle speed, gear and other related signals;

[0078] ②According to the set judgment conditions, judge whether it is currently in emergency oil recovery state 1, and if so, keep the current gear;

[0079] ③ According to the set judgment conditions, judge whether it is currently in emergency oil recovery state 2;

[0080] ④ If it is in the emergency oil recovery state 2, the shift control is performed according to the set shift strategy;

[0081] ⑤According to the set judgment conditions, judge whether the emergency oil withdrawal control exit conditions are met;

[0082] ⑥ If the conditions for exiting the emergency oil recovery control are met, the shift control is carried out according to the nor...

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PUM

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Abstract

The invention provides a control method for improving vehicle acceleration power response, which comprises the following steps of: judging whether the emergency oil receiving condition of a driver is met or not by identifying the speed and the opening degree of an accelerator pedal of the driver, and if the emergency oil receiving condition is met, keeping a vehicle at a set gear by delaying upshift, changing a gear shifting strategy and the like, so as to improve the acceleration power response of the vehicle. The problems of frequent gear shifting, slow power response and the like when a driver changes the driving intention for re-acceleration after urgent oil collection sliding are solved, and meanwhile the power response and driving fun of re-acceleration can be effectively improved. According to the method, NVH and economical efficiency are both considered, the power response of stepping on the accelerator again in the sliding state is improved, the power response of acceleration and the re-acceleration capacity can be effectively improved, frequent gear shifting is avoided, and the method has the beneficial effect on the economical efficiency of the vehicle. The method is suitable for hydraulic automatic transmissions, electric control mechanical automatic transmissions, double-clutch automatic transmissions and other automatic transmissions capable of carrying out automatic gear shifting control.

Description

technical field [0001] The invention belongs to the technical field of automatic transmission control, and relates to a control method for improving vehicle acceleration dynamic response, in particular to a control method for improving vehicle dynamic performance under re-acceleration conditions. Background technique [0002] As people's demand for vehicle driving experience is getting higher and higher, various performances of the whole vehicle are the aspects that the discerning driver pays attention to, among which the power and acceleration are the most important performances that the driver pays attention to. When the powertrain configuration of the vehicle is fixed, the power output of stepping on the accelerator can only be controlled from the engine or transmission. If the torque output of the engine accelerator pedal is only considered, it will change the driving style of the vehicle as a whole, and cannot be aimed at coasting. The operation of changing the driving ...

Claims

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Application Information

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IPC IPC(8): F16H61/02F16H61/10F16H59/48
CPCF16H61/0213F16H61/10F16H59/48F16H2061/0012F16H2061/0015
Inventor 张学锋陈国栋杨云波王昊李岩吴刚许健男刘治文王小峰
Owner CHINA FIRST AUTOMOBILE
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