A power matching method between an engine and a hydraulic torque converter for a loader

Abstract

The invention discloses a power matching method of an engine and a hydraulic torque converter for a loader. Firstly, six cycle working stages of the engine are determined and segmented; and then the six cycle working stages are classified into shovel Digging stage, lifting stage, start-up stage and constant speed stage 4 kinds of working condition stage categories; then analyze the 4 working condition stage categories to obtain the primary and secondary working condition parameters and the power consumption of the hydraulic system for each working condition stage category The parameters of the primary and secondary working conditions of the throttle opening; and then draw the common working characteristic curve of each working condition stage category, so as to obtain the power matching result of the engine and the hydraulic torque converter under each working condition stage category. The present invention performs power matching on different working condition stages of the loader respectively, which not only satisfies the power performance but also takes into account the economy, and the matching is more precise; it overcomes the power waste caused by the excess power or the fuel consumption caused by the lack of power in the traditional power matching. Added questions.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a power matching method of an engine and a hydraulic torque converter under different working conditions of a loader. Background technique [0002] The performance of the transmission system of construction machinery is not only related to the performance of the engine and torque converter itself, but also closely related to the power matching relationship between them. If power matching is not carried out, the respective advantages will not be fully utilized. For a loader, it needs to face a variety of complex working conditions during its work, and the power mismatch has a particularly prominent impact on it. In severe cases, the power performance and economic performance of the entire vehicle may even be lost. [0003] In the field of construction machinery, the load conditions of construction machinery are often more complex, and the randomness, mutation and dy...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a power matching method between the engine and the hydraulic torque converter for a loader, which performs power matching for different working conditions of the loader, and satisfies the power requirement At the same time, the economy is taken into account, and the matching is more precise; it overcomes the problem of power waste caused by excess power or increased fuel consumption when power is insufficient in traditional power matching.

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