Gear shifting point correction method and device for vehicle and vehicle

Abstract

The invention discloses a gear shifting point correction method for a vehicle. The gear shifting point correction method comprises the steps that the road gradient percentage of the vehicle is obtained; a current gear position and a target gear position of the vehicle are obtained, and a basic gear shifting point is determined according to the current gear position and the target gear position; a correction curve is determined according to the current gear position and the target gear position; and a correction value is determined according to the road gradient percentage and the correction curve, and the basic gear shifting point is corrected according to the correction value. According to the gear shifting point correction method for the vehicle, the basic gear shifting point can be dynamically corrected according to different current gear positions and different resistance sizes under the road conditions with gradients, so that the vehicle is upshifted or downshifted at the optimal time, the intention of a driver is met, and the optimal driving experience is achieved. The invention further discloses a gear shifting point correction device for the vehicle and the vehicle comprising the gear shifting point correction device for the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method for correcting a shift point for a vehicle, a device for correcting a shift point for a vehicle and a vehicle. Background technique [0002] The basic shift points of early vehicles equipped with dual-clutch automatic transmissions did not take into account factors such as gradient resistance. That is, no matter how large the slope value is, no correction value is added to compensate the basic shift point. But without slope resistance compensation, when going uphill, the driver will feel that the upshift is premature, and the vehicle has no power after the upshift. [0003] In the related art, a method of correcting the basic shift point according to the gradient resistance is proposed, and the method establishes a linear relationship between the gradient resistance and the correction value. [0004] The disadvantages of the methods in the above-mentioned related tech...

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Problems solved by technology

[0004] The disadvantages of the methods in the above-mentioned related technologies are: the larger the slope resistance, the larger the correction value, which will lead to small slope resistance and too small correction value, and when the slope resistance is large, the correction value is too large, resulting in insufficient compensation or excessive compensation

In addition, the same correction value will be compensated when the resistance of the low gear and the resistance of the high gear are the same, which is obviously unreasonable

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