Excavator energy-saving efficiency based on diesel engine cylinder deactivation technology
Excavator energy-saving efficiency based on diesel engine cylinder deactivation technology
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DOI：
10.3901/cjme.2012.05.897
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发表时间：
2012-09
影响因子：
4.2
通讯作者：
Jing Yang;Long Quan;Yang Yang-Yang
中科院分区：
文献类型：
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作者：
Jing Yang;Long Quan;Yang Yang-Yang
液压挖掘机节能研究主要体现在提高柴油机及液压元件性能、改进液压系统、改进柴油机-液压系统-执行机构的动力匹配三个方面。上述措施虽然具有一定的节能效果，但由于液压挖掘机负载变化频繁，波动剧烈，因此柴油机经常工作在高速轻载工况下，油耗较高。因此，为了提高柴油机轻载时的经济性，降低液压挖掘机的油耗，提出了基于柴油机气缸停用技术的能量管理理念。通过比较柴油机正常工况和停缸工况下的通用特性，阐明在部分负荷工况下采用停缸技术可显著降低油耗的机理。利用AMESim软件建立了液压系统和柴油机的仿真模型，并采用数字仿真方法研究了采用缸停技术的燃油燃烧消耗。这样，就规定了钢瓶的失活区域。基于仿真结果建立了采用该技术的挖掘机测试系统，结果表明：采用该技术后，柴油机仍能在部分负荷下高效工作；在符合驾驶要求的情况下，经济性模式和重载模式下的油耗分别降至11%和13%。研究结果可为液压挖掘机的节能研究提供参考。
The hydraulic excavator energy-saving research mainly embodies the following three measures: to improve the performance of diesel engine and hydraulic component, to improve the hydraulic system, and to improve the power matching of diesel-hydraulic system-actuator. Although the above measures have certain energy-saving effect, but because the hydraulic excavator load changes frequently and fluctuates dramatically, so the diesel engine often works in high-speed and light load condition, and the fuel consumption is higher. Therefore, in order to improve the economy of diesel engine in light load, and reduce the fuel consumption of hydraulic excavator, energy management concept is proposed based on diesel engine cylinder deactivation technology. By comparing the universal characteristic under diesel normal and deactivated cylinder condition, the mechanism that fuel consumption can be reduced significantly by adopting cylinder deactivation technology under part of loads condition can be clarified. The simulation models for hydraulic system and diesel engine are established by using AMESim software, and fuel combustion consumption by using cylinder-deactivation-technology is studied through digital simulation approach. In this way, the zone of cylinder deactivation is specified. The testing system for the excavator with this technology is set up based on simulated results, and the results show that the diesel engine can still work at high efficiency with part of loads after adopting this technology; fuel consumption is dropped down to 11% and 13% under economic and heavy-load mode respectively under the condition of driving requirements. The research provides references to the energy-saving study of the hydraulic excavators.