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Vehicle, gear shifting method of vehicle and computer readable storage medium

A shift method and vehicle technology, which are applied in vehicle components, transportation and packaging, input parameters of external conditions, etc., can solve problems such as poor dynamic performance, and achieve the effect of improving dynamic performance.

Pending Publication Date: 2021-04-27
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the existing vehicle shifts gears at the previous gear shifting speed, the dynamic performance of the vehicle will be poor.

Method used

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  • Vehicle, gear shifting method of vehicle and computer readable storage medium
  • Vehicle, gear shifting method of vehicle and computer readable storage medium
  • Vehicle, gear shifting method of vehicle and computer readable storage medium

Examples

Experimental program
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no. 1 example

[0059] refer to figure 2 , figure 2 It is the first embodiment of the gear shifting method of the vehicle of the present invention, the gear shifting method of the vehicle includes the following steps:

[0060] Step S10, acquiring terrain parameters of the current location of the vehicle and the current vehicle speed gear, wherein the terrain parameters include at least one of slope and altitude;

[0061] In this embodiment, the execution subject is a vehicle. The vehicle can be an automatic transmission car. When the vehicle is driving, the vehicle will automatically shift gears based on the vehicle speed. Automatic shifting includes shifting when the vehicle speed drops and shifting when the vehicle speed increases. In this embodiment, the gear shifting performed when the vehicle speed increases will be described in detail.

[0062] During the driving process of the vehicle, the topographic parameters are acquired in real time or at regular intervals, and the topograp...

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PUM

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Abstract

The invention discloses a vehicle gear shifting method which comprises the following steps: acquiring terrain parameters of the current position of a vehicle and a current vehicle speed gear, the terrain parameters comprising at least one of the gradient and the altitude; determining an initial gear shifting vehicle speed according to the current vehicle speed gear, and determining a first correction value according to the terrain parameter; increasing the initial gear shifting vehicle speed according to the first correction value to obtain a target gear shifting vehicle speed; and when detecting that the vehicle speed of the vehicle reaches the target gear shifting vehicle speed, controlling the vehicle speed gear of the vehicle to be switched to a target vehicle speed gear from the current vehicle speed gear, the target vehicle speed gear being adjacent to the current vehicle speed gear. The invention further discloses a vehicle and a computer readable storage medium. The power performance of the engine is improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle gear shifting, in particular to a vehicle, a gear shifting method of the vehicle and a computer-readable storage medium. Background technique [0002] Automatic transmissions are popular in the auto market now. An automatic car is easy to drive. The shift line (shift speed) of an automatic car is generally calibrated by considering drivability, power, fuel consumption, NVH (Noise, Vibration, Harshness, noise, vibration and harshness). However, some special circumstances, such as slope and altitude, are often overlooked, leading to some defects. For example, when the vehicle is climbing a slope, the output torque is much larger than that of a vehicle on a flat road, so the previous shift line of the vehicle is not applicable. For example, the 5th gear may be suitable for a vehicle speed of 80KM / h on a flat road, but this speed If the 5th gear is used while climbing a 15% slope, the power...

Claims

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Application Information

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IPC IPC(8): B60W30/19
CPCB60W30/19B60W2552/15B60W2555/40
Inventor 何继争邵杰赵奕凡曹宇李翔
Owner SAIC-GM-WULING AUTOMOBILE CO LTD