轮式装载机发动机节能控制研究

轮式装载机广泛应用于重要的工程领域,作为其唯一动力来源的发动机的运行状态对装载机的 经济性有较大影响;针对国内某型轮式装载机瞬态油耗较高的问题,提出了发动机瞬态节能控制的控制方 法,其通过限制发动机角加速度,降低加速踏板行程突然增大时的瞬时油耗;针对 V 字形工况下,燃油经济 性差以及未考虑装载机工况识别控制发动机转速的问题,提出了整机两作业模式节能控制,主要通过模式选 择开关设置作业模式,在实现工况识别的同时,也尽可能使发动机工作点分布在燃油消耗率较低的区域;通 过实车的实验结果表明:在控制策略下,动力模式时整机能拥有较好的动力性,经济性也有所提高;在经济模 式下,动力性有所降低但经济性有较大提升

Research on Energy Saving Control of Wheel Loader Engine

Wheel loaders are widely used in important engineering fields. The running state of the engine as its sole power source has a great influence on the economy of the loader. Aiming at the problem of highly transient fuel consumption of a certain type of wheel loader in China this paper proposes a control method for engine transient energy-saving control which reduces the instantaneous fuel consumption by limiting the angular acceleration of the engine when the accelerator pedal suddenly stamped. Aiming at the problem of poor fuel economy in V working condition and engine speed control without considering loader working condition recognition energy-saving control of the whole machine with two operating modes is proposed. The working mode was mainly set by mode selection switch. While realizing working condition recognition the operating points of the engine are distributed in the area with a low fuel consumption rate. The results of the field test show that under this control strategy the dynamic mode could make the whole machine have better dynamic property and fuel economy. In the economic mode the dynamic property is reduced but the economy is greatly improved.