Gear shifting control method and device for gear box of loading machine, electric control system and loading machine

Abstract

The invention provides a gear shifting control method and device for a gear box of a loading machine, an electric control system and the loading machine, and relates to the field of engineering machines. The gear shifting control method for the gear box of the loading machine comprises the steps of obtaining an automatic gear shifting signal enabling the loading machine to be automatically switched into a requested gear from a current gear; according to the current gear and the current speed of the loading machine, obtaining the turbine rotating speed of the loading machine; according to the rotating speed of an engine and the turbine rotating speed, obtaining the speed ratio of a torque converter, comparing the speed ratio of the torque converter with a first numerical value interval, and if the speed ratio of the torque converter is higher than the first numerical value interval, carrying out one-gear-down compensation on the requested gear; and if the speed ratio of the torque converter is lower than the first numerical value interval, carrying out one-gear-up compensation on the requested gear. According to the gear shifting control method for the gear box of the loading machine, the gear shifting compensation control is added, and the loading machine works in an efficient zone of the torque converter to the greatest extent; and the power using efficiency is improved and fuel economy is improved while the power performance is ensured.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a gear shift control method and device for a loader gearbox, an electric control system and a loader. Background technique [0002] In today's domestic loader industry, the technology of fully automatic electronically controlled gearbox is not very mature, and the main core control logic algorithm is not yet perfect, so it is difficult to achieve an effective balance between power performance and fuel economy. Serious waste. However, the core control technology is monopolized by foreign countries, and it is urgent to develop a new loader gearbox shift control method. [0003] In addition, the gear shifting strategy in the gearbox controller program is relatively simple, which cannot be compatible with the application requirements of different models equipped with mechanical engines and EFI engines, and the versatility is not strong. Contents of the invention [0004] In o...

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Problems solved by technology

[0004] In order to overcome the problem of serious fuel consumption in the gearbox shifting process in the prior art, the present invention provides a loader gearbox shift control method, device, electronic control system and loader

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