一、液力传动工程机械发动机的功率利用工程机械多应用单级向心涡轮液力变矩器,其最高效率η~*=0.85～0.92。那么,是不是相同发动机不同传动系的工程机械,液力传动的功率利用降低了15～8%呢!要回答这个问题,必须从分析发动机特性和工程机械作业负荷着手。工程机械多采用柴油机作为动力装置。图1为典型的今程调速柴油机特性曲线。 First, the hydraulic transmission construction machinery engine power utilization engineering machinery multi-application single-stage centripetal turbine torque converter, the highest efficiency η ~ * = 0.85 ~ 0.92. So, is it not the construction machinery of different drive trains of the same engine, and the power utilization of hydraulic transmission is reduced by 15-8%? To answer this question, we must start by analyzing the engine characteristics and the work load of construction machinery. Construction machinery mostly uses diesel engines as power devices. Figure 1 shows the characteristics of a typical speed-controlled diesel engine.