Abstract
This paper proposes the concept of constant power interval for turbocharged engines. Based on the analysis of the existing engine and torque converter matching, a new method for engine and torque converter matching is proposed. At the same time, the paper adopts the modular idea, and divides the loader into five modules: engine, hydraulic torque converter, gearbox and drive axle, complete machine and external environment, and establishes mathematical model and MATLAB/Simulink simulation model respectively. The MATLAB/Simulink simulation model of each module is connected to establish the loader powertrain simulation system, and the performance of the loader drive system under the conditions of shovel loading, forward lifting and full load retreat is analysed. It indicates that the loader’s power and economy cannot be satisfied at the same time, and the design should be focused. The experimental results show that the system has perfect functions and stable performance, which meets the needs of engine performance development test.
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