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Gearshift control method and system as well as engineering machinery for dragging operation

A technology of shifting control and gear position, applied in the fields of systems, construction machinery for traction work, and shifting control methods, can solve the problem that the automatic shifting technology of automobiles cannot be fully adapted, and achieve the effect of realizing automatic shifting.

Active Publication Date: 2012-08-15
SHANTUI CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the operating conditions of engineering vehicles are obviously different from those of automobiles, the automatic shifting technology of automobiles cannot be fully adapted to construction machinery.

Method used

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  • Gearshift control method and system as well as engineering machinery for dragging operation
  • Gearshift control method and system as well as engineering machinery for dragging operation
  • Gearshift control method and system as well as engineering machinery for dragging operation

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] The embodiment of the invention discloses a gear shift control method, system and construction machinery used for traction work, so as to realize automatic gear shift of the construction machinery used for traction work.

[0048] A shift control method disclosed in this embodiment, such as figure 1 shown, including steps:

[0049] S101. Obtain the turbine torque M under the current throttle state T and gear signal N;

[0050] S102. Determine whether the g...

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PUM

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Abstract

The invention discloses a gearshift control method. The method comprises the following steps of: acquiring the turbine torque and a gear signal under the current accelerator state; keeping the current gear when the gear signal is determined to be a neutral gear signal, or comparing the turbine torque and a preset torque range; keeping the current gear when the turbine torque is in the preset torque range; raising the gear when the turbine torque is less than the minimum torque in the preset torque range and the gear signal is determined not to be the maximal gear position; and lowering the gear when the turbine torque is greater than the maximal torque in the preset torque range and the gear signal is determined not to be the minimum gear signal. In the gearshift control method disclosed by the invention, the encountered working conditions are determined according to the turbine torque, and further the automatic control of the gear is carried out.

Description

technical field [0001] The present invention relates to the technical field of engineering machinery, more specifically, to a shift control method, system and engineering machinery used for traction work. Background technique [0002] In order to improve the adaptability of construction machinery to harsh operating environments and working conditions, a hydraulic torque converter is added to the transmission system of traditional construction machinery for hydraulic mechanical transmission. This hydromechanical transmission device has many advantages of both hydraulic transmission and mechanical transmission, such as smooth start, rapid acceleration, etc.; at the same time, the transmission of power through liquid can reduce the dynamic load and vibration of the transmission system and prolong the use of the transmission system. Life, improve vehicle driving safety and passability. Generally, as long as the matching is reasonable, the problem of "flame-out" of the engine un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/16F16H59/70F16H59/54E02F9/20
Inventor 宋文龙徐长重张亮李宣秋宋润州冯西友李乃柱吕文彬
Owner SHANTUI CONSTR MASCH CO LTD
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