Prime move output torque equalising control device

Abstract

The invention relates to an output torque balance control device of prime mover, comprising a hydraulic pump, an accumulator and a torque balance controller. The input and output shaft of the hydraulic pump is connected with the output shaft of the prime mover in a transmission way; the outlet of the hydraulic pump is connected with the inlet of the accumulator; an oil tank is connected with the inlet of the hydraulic pump; the accumulator is provided with an energy storage pressure sensor; the output of the hydraulic pump is connected with the oil tank through a stop valve; the hydraulic pump is a variable displacement hydraulic pump, which has the functions both of a hydraulic pump and a hydraulic motor; the oil tank is connected with the inlet of the variable displacement hydraulic pump through a first check valve, the outlet of the variable displacement hydraulic pump is connected with the inlet of the accumulator through a second check valve, the inlet of the variable displacement hydraulic pump is connected with the inlet of the accumulator through a first controlled guide valve and the outlet of the variable displacement hydraulic pump is connected with the oil tank througha second controlled guide valve; the torque balance controller consists of an unloading control module and a torque balance module. The output torque balance control device of prime mover provided bythe invention has simple structure, good applicability and low cost.

Description

(1) Technical field [0001] The invention belongs to the field of fluid transmission and relates to a prime mover output torque balance control device. (2) Background technology [0002] In many mechanical equipment, the output torque of the prime mover also changes greatly due to the change of the load. For example, in construction machinery such as hydraulic excavators, bulldozers, and loaders, the load changes greatly, resulting in a large change in the output torque of the diesel engine driving these devices. In the usual design in the past, in order to meet the normal work requirements of these equipment, the diesel engine must be selected according to the maximum load that may occur. In the actual working process, the average load power on these devices is not large, far less than the maximum load power. Therefore, the power of the diesel engine selected according to the maximum load power is too large in the most part of the working process, causing the diesel engine...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existing problems of complex structure, poor applicability and high cost of the existing balance control device, the present invention provides a prime mover output torque balance control device with simple structure, good applicability and low cost

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