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Gear shifting method and device of vehicle

A gear shifting method and vehicle technology, applied in the field of gear shifting methods and devices for vehicles, can solve the problems of reducing driving power and economy, frequent power interruptions of vehicles, etc., improve power performance and cost performance, avoid vehicle power interruptions, The effect of reducing the number of shifts

Active Publication Date: 2020-04-17
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of gears in the AMT, if the vehicle is shifted from the starting gear step by step during daily driving, it needs to shift gears frequently, resulting in frequent power interruptions of the vehicle and reducing the driving dynamics and economy.

Method used

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  • Gear shifting method and device of vehicle
  • Gear shifting method and device of vehicle
  • Gear shifting method and device of vehicle

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "com...

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Abstract

The invention provides a gear shifting method and device of a vehicle. The method includes the steps of determining the current accelerator opening degree and current gear of the vehicle in the driving process of the vehicle, determining the trip stop duration according to the current accelerator opening degree and the current gear, determining the trip stop vehicle speed corresponding to the current accelerator opening degree according to a trip stop curve corresponding to the current gear, making the gear of the vehicle jump to a preset trip stop gear when the driving speed of the vehicle isnot smaller than the trip stop vehicle speed within the trip stop duration, determining the gear shifting vehicle speed corresponding to the current accelerator opening degree according to a gear shifting curve corresponding to the current gear when the driving speed of the vehicle is not larger than nor equal to the trip stop vehicle speed within the trip stop duration, and switching the gear ofthe vehicle into a preset shifting gear when the driving speed of the vehicle is not smaller than the gear shifting vehicle speed. By means of the method, trip stop can be performed in the driving process of the vehicle, the gear shifting frequency of the vehicle is reduced, and the power interruption situation of the vehicle caused by frequency gear shifting is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a method and device for shifting gears of a vehicle. Background technique [0002] With the development of science and technology, in order to make cars more intelligent and humanized, many cars are equipped with automated mechanical transmissions (Automated Mechanical Transmission, AMT). The control system automatically selects the appropriate gear according to the engine speed and load, making driving more convenient and improving the driver's driving experience. [0003] The AMT in the car is provided with multiple shifting gears, and the AMT of different types of cars has different numbers of gears, and the AMT in the heavy commercial vehicle usually has 12 to 16 gears. Due to the large number of gears in the AMT, if the vehicle is shifted from the starting gear step by step during daily driving, it needs to shift gears frequently, resulting in frequent power interru...

Claims

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Application Information

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IPC IPC(8): F16H59/02F16H59/24F16H59/44F16H59/46F16H59/48F16H61/18F16H61/04
CPCF16H59/02F16H59/24F16H59/44F16H59/46F16H59/48F16H61/04F16H61/18F16H2059/0221F16H2061/0075F16H2061/0459
Inventor 王飞李永昌王菁李丕茂梁超臣
Owner WEICHAI POWER CO LTD
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