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Control method and device for engine gear-shifting and heavy truck tractor

A control method and technology of a control device, applied in the direction of transmission control, mechanical equipment, components with teeth, etc., can solve the problems of uneven shifting, insufficient power, engine speed falling below idle speed, etc., and achieve improved shifting. Smoothness and dynamic effect

Active Publication Date: 2020-09-22
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a control method and device for engine gear shifting, and a heavy-duty truck tractor, to at least solve the problem that in the related art, when the engine shifts gears in the low-speed range ahead of time, it is easy to cause uneven gear shifting and insufficient power, which in turn will lead to engine failure. The speed drops below the idle speed, or even the technical problem of flameout

Method used

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  • Control method and device for engine gear-shifting and heavy truck tractor
  • Control method and device for engine gear-shifting and heavy truck tractor
  • Control method and device for engine gear-shifting and heavy truck tractor

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Embodiment 1

[0026] According to an embodiment of the present invention, an embodiment of a control method for engine gear shifting is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0027] figure 1 is a flow chart of a control method for engine shifting according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0028] Step S102, acquiring power parameters of the engine after gear shifting, wherein the power parameters at least include reserve torque;

[0029] In a specific implementation process, the above power parameters include but are not limited to reserve torque. The power parameters related to the engine ...

Embodiment 2

[0053] According to another aspect of the embodiment of the present invention, a control device for engine gear shifting is also provided, image 3 is a schematic diagram of a control device for engine gear shifting according to an embodiment of the present invention, such as image 3 As shown, the engine shift control device includes: an acquisition module 32 , a first judgment module 34 and a control module 36 . The control device for shifting gears of the engine will be described in detail below.

[0054] The acquiring module 32 is used to acquire the power parameters of the engine after gear shifting, wherein the power parameters at least include the reserve torque; the first judging module 34 is connected to the above-mentioned acquiring module 32 and is used to judge the relationship between the power parameters and the preset power parameter threshold The size relationship is to obtain the judgment result; the control module 36 is connected to the above-mentioned first...

Embodiment 3

[0064] According to another aspect of the embodiments of the present invention, a heavy-duty tractor is also provided, and the heavy-duty tractor includes the above-mentioned engine shift control device.

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Abstract

The invention discloses a control method and device for engine gear-shifting and a heavy truck tractor. The control method includes the steps that power parameters of an engine after gear shifting areobtained, wherein the power parameters at least include reserve torque; the size relationship between the power parameters and a predetermined power parameter threshold value is judged to obtain a judgment result; and according to the judgment result, the engine is controlled to perform gear shifting or not. The technical problems in the related art that the engine rotating speed drops below theidle speed or even stalls caused by uneven gear shifting and insufficient power due to the engine gear shifting time in a low-rotating-speed zone ahead of time are solved.

Description

technical field [0001] The invention relates to the technical field of engine control, in particular to a control method and device for engine gear shifting and a heavy truck tractor. Background technique [0002] In the existing simulation analysis, the shift control is generally based on the set speed, which is a single-mode control shift, especially when the engine is in the low speed range, the shift time is advanced, because the vehicle dynamics after the shift is not considered , the speed will be lower than the idle speed after shifting gears, or even the engine will be turned off, which will affect the power of the vehicle, making it difficult to accelerate the vehicle, or reverse the gear. [0003] Aiming at the problems in the above-mentioned related technologies that the shift timing of the engine in the low-speed range is advanced, it is likely to cause uneven shifting and insufficient power, which will cause the engine speed to drop below the idle speed, or even...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/04
CPCF16H61/0213F16H61/04F16H2061/0216F16H2061/0459
Inventor 王峰张扬曹原李风刚郝鹏飞
Owner WEICHAI POWER CO LTD
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