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Gear shifting control method based on gear shifting action overlapping

A control method and action technology, applied in the direction of transmission control, toothed components, belts/chains/gears, etc., can solve the problems of long shift time, increase vehicle fuel consumption, and affect vehicle life, etc., to achieve fuel consumption reduction, The effect of shortening the time

Active Publication Date: 2021-02-12
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing shifting method has the problem of long shifting time. Long shifting time will not only increase the fuel consumption of the vehicle, but also affect the life of the vehicle, and at the same time make the driver's driving experience poor.

Method used

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  • Gear shifting control method based on gear shifting action overlapping
  • Gear shifting control method based on gear shifting action overlapping

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Embodiment Construction

[0024] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describin...

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Abstract

The invention relates to the technical field of automatic gear shifting of commercial vehicles, and discloses a gear shifting control method based on gear shifting action overlapping. The gear shifting control method comprises the following steps that S1, when a TCU receives a gear shifting request, the TCU controls an engine to reduce the torque of the engine to a preset torque, and meanwhile, the TCU controls a clutch to be separated to a semi-linkage joint point position; S2, the TCU controls a transmission to complete a gear disengagement action, meanwhile, the TCU sends the zero torque tothe engine so that the torque of the engine can be reduced to zero, and the TCU controls the clutch to be disengaged to a disengagement position; and S3, the TCU controls the engine to enable the rotating speed of the engine to reach the preset rotating speed, meanwhile, the TCU controls a brake to enable the rotating speed of an intermediate shaft of the brake to reach the target rotating speed,and after the rotating speed of the intermediate shaft reaches the target rotating speed, the TCU controls the transmission to complete a gear advancing action. According to the gear shifting controlmethod based on gear shifting action overlapping, rapid gear shifting can be achieved, oil consumption of a vehicle is reduced, and the service life of the vehicle is prolonged.

Description

technical field [0001] The invention relates to the technical field of automatic shifting of commercial vehicles, in particular to a shifting control method based on overlapping shifting actions. Background technique [0002] In the prior art, vehicles with automatic shifting all include an automatic transmission control unit (Transmission Control Unit, referred to as TCU). It completes the gear removal action, and then the TCU controls the speed of the intermediate shaft of the brake to make it reach the target speed, and then, the TCU controls the transmission to make it complete the shifting action, and finally the TCU controls the engine to increase the torque of the engine to the current gear. Bit-matched torque, and controlled clutch engagement gradually. The existing shifting method has the problem of long shifting time. Long shifting time will not only increase the fuel consumption of the vehicle, but also affect the life of the vehicle, and at the same time make th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/24
CPCF16H61/0213F16H61/24F16H2061/0232F16H2061/0216
Inventor 王继昆于洁清吕二华于跃刘四海徐乐马艳艾妮
Owner FAW JIEFANG AUTOMOTIVE CO
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