Dynamic matching device and method for loader engine and adjustable hydraulic torque converter

Abstract

The invention discloses a dynamic matching device and method for a loader engine and an adjustable hydraulic torque converter. The device is built on a hydrodynamic drive system of a complete loader. The device comprises a master controller, an information collection unit, an electronic control unit and an execution unit. The hydrodynamic drive system of the complete loader comprises the engine, the adjustable hydraulic torque converter, a gearbox and a walking mechanism composed of wheels and axles. The master controller is adjusted and controlled by an operator in real time according to needed working conditions, and meanwhile various experimental data obtained during rack testing are stored and serve as preset parameters in the electronic control unit. According to the dynamic matching device and method, the common working range of the engine and the adjustable hydraulic torque converter can be within the range of the preset parameters obtained during rack testing, the traction performance and dynamic performance of the loader are improved, meanwhile, the loader is within the range with low fuel consumption, and fuel economy of the loader is improved.

Description

technical field [0001] The invention belongs to the field of engineering machinery, and in particular relates to a dynamic matching device and method for a loader engine and an adjustable hydraulic torque converter. Background technique [0002] The loader is a cycle operation machine, and its transmission system adopts a hydraulic torque converter, which can greatly increase the work productivity and improve the performance of the machine, and at the same time greatly reduce the vibration and impact caused by the sudden change of the external load. The combination of the engine and the torque converter can be regarded as a new power device, and whether the matching is reasonable under different operating conditions determines the performance of the whole machine. Most hydraulic torque converters for loaders are non-adjustable hydraulic torque converters, which cannot meet the requirements of a reasonable match between the engine and the hydraulic torque converter under diff...

AI Technical Summary

Problems solved by technology

[0003] At present, in the loader transmission system, the matching of the engine and the torque converter can only meet the requirements under a certain working condition. This matching method can only make the power of the loader under a certain working condition The performance or economic performance is improved, and the purpose of matching the engine and the torque converter of the loader under any working condition cannot be realized, that is to say, the loader cannot have high power performance under different working conditions at the same time And good economic performance, and thus can not meet the requirements of loader energy saving

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