Automatic gearbox gear shifting method, device and equipment and storage medium

A technology of automatic transmission and shifting method, applied in the field of vehicles, can solve problems such as inability to match engine performance, low engine intake air, and low oxygen content.

Pending Publication Date: 2021-07-23
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this shift point can only match the performance of the engine in the flat environment, that is, in the normal air pressure range
In the plateau environment, due to the low air pressure, low oxygen content, and le

Method used

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  • Automatic gearbox gear shifting method, device and equipment and storage medium
  • Automatic gearbox gear shifting method, device and equipment and storage medium
  • Automatic gearbox gear shifting method, device and equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example one

[0049] figure 2 A flow chart of the automatic gearbox shifting method provided herein, such as figure 2 As shown, the automatic transmission shift method provided in this embodiment includes the following steps:

[0050] Step 101 obtain the target air pressure of the environment in which the target vehicle is located.

[0051] Step 102, if the target air pressure is lower than the predetermined air pressure, the correction value of the automatic transmission shift point is corrected to correct the predetermined automatic transmission shift point, and use the corrected automatic transmission shift point to the target vehicle. The shift is performed; wherein the correction value of the automatic transmission shift point is the difference between the automatic transmission shifting point of the predetermined automatic transmission shift point and the predetermined automatic transmission shift point.

[0052] It should be noted that the execution body of the auto...

Example Embodiment

[0057] Example 2

[0058] image 3 A flow chart of the automatic gearbox shifting method provided herein, such as image 3 As shown, the automatic transmission shifting method provided in this embodiment is based on the above embodiment, and the automatic transmission shifting point includes an automatic transmission power shift point, in step 102, the adoption The correction value of the automatic gearbox shift point is previously corrected for the predetermined automatic transmission shift point, and includes the following steps:

[0059] Step 201, acquire the engine speed of the experimental vehicle, the predetermined automatic transmission shift point of the target vehicle and the target vehicle.

[0060] Step 202 obtains the engine's external characteristic torque based on the target air pressure and the engine speed.

[0061] Step 203, according to the engine external characteristic torque, the vehicle load, the throttle opening and speed, based on the minimum principle of po...

Example Embodiment

[0071] Example three

[0072] Figure 5 A flow chart of the automatic gearbox shifting method provided herein, such as Figure 5 As shown, the automatic gearbox shifting method provided in this embodiment is based on the above embodiment, and the automatic transmission shift point includes an automatic transmission economy shifting point, in step 102, the adoption The correction value of the automatic gearbox shift point is previously corrected for the predetermined automatic transmission shift point, and includes the following steps:

[0073] Step 301 acquire the engine economic zone offset speed of the experimental vehicle in the target air pressure.

[0074] Step 302, according to the engine economic zone offset rotation speed, the throttle opening degree of the experimental vehicle, the fuel consumption ratio, and the vehicle speed, based on the fuel consumption minimum principle, the economic shift point of the target air pressure is calculated.

[0075] Step 303, a predetermi...

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PUM

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Abstract

The invention provides an automatic gearbox gear shifting method, device and equipment and a storage medium. The method comprises the steps that the target air pressure of the environment where a target vehicle is located is obtained, if the target air pressure is lower than the preset air pressure, a preset automatic gearbox gear shifting point is corrected through a correction value of an automatic gearbox gear shifting point, and the target vehicle is subjected to gear shifting by using the corrected automatic gearbox gear shifting point. As the correction value of the automatic gearbox gear shifting point is the difference between the automatic gearbox gear shifting point under the pre-calculated target air pressure and the preset automatic gearbox gear shifting point, the correction value can well represent the change of the automatic gearbox gear shifting point under the target air pressure as compared with the preset automatic gearbox gear shifting point. According to the automatic gearbox gear shifting method, the situation that when the target vehicle is subjected to gear shifting through the corrected automatic gearbox gear shifting point, the performance of the whole vehicle is not reduced, and the automatic gearbox gear shifting method with environmental adaptability is achieved.

Description

technical field [0001] The present application relates to the technical field of vehicles, and in particular to an automatic transmission shifting method, device, equipment and storage medium. Background technique [0002] With the continuous development of science and technology, automatic transmission vehicles are more and more widely used in daily life. Automatic transmission vehicles are equipped with an automatic transmission, which can automatically change gears while the vehicle is moving, without manual operation. [0003] At present, automatic transmissions usually shift gears automatically according to pre-calibrated shift points. However, this shift point can only match the performance of the engine in the flat environment, that is, in the normal air pressure range. In the plateau environment, due to the low air pressure, low oxygen content, and less air intake of the engine, its performance will change greatly. Therefore, the existing automatic transmission shi...

Claims

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Application Information

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IPC IPC(8): F16H61/02F16H59/62F16H59/24F16H59/44F16H59/52
CPCF16H61/0213F16H59/62F16H59/24F16H59/44F16H59/52F16H2342/02F16H2059/366F16H2059/147
Inventor 王继磊王海军王兴元刘刚陈月春
Owner WEICHAI POWER CO LTD
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