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沃尔沃建筑设备研发出新的电液系统以减少挖掘机能量损耗

中国工程机械商贸网2021-09-15

来自瑞典和韩国的沃尔沃建筑设备团队与芬兰的Norrhydro公司合作开发了一种新的电液系统,该系统有望大幅减少能量损耗并提高挖掘机的燃油效率。

该系统以类似于共轨燃油系统的方式,使挖掘机的所有工作功能都通过一个压力共轨和两条或更多条压力管线连接到液压蓄能器。这些蓄能器可恢复传统系统中通常会损失的动能和峰值功率。随着气缸的驱动,“智能执行器”将液压动力转换为可变的力和速度。通过该系统进行的能量回收的同时也提高了机器旋转功能的性能和效率。

所有这些能源效率的转化使较小的发动机和冷却系统能够与较大的系统做相同的工作,从而可以以更少的燃料完成更多的工作,并且产生更少的温室气体。此外,随着功率的提升,循环时间更短,在装载卡车时,这有助于提高整体工作效率以及承包商的成本效益。

挖掘机后部的液压蓄能器存储液压动力,提升了机器性能并降低了油耗

原文如下:

Volvo CE in Field Trials for Excavator System That Cuts Energy Losses

by Tom Jackson

A Volvo Construction Equipment team from Sweden and South Korea has been quietly working with Finnish company Norrhydro to develop an electro-hydraulic system that promises to drastically cut energy losses and improve fuel efficiency in its excavators.

In a manner similar to common rail fuel systems, all the excavator’s work functions are connected to a hydraulic accumulator via a common pressure rail and two or more pressure lines. These accumulators recover kinetic energy and peak power supply that is normally lost in a conventional system. For cylinder-driven work, “smart actuators” convert hydraulic power to variable force and speed. Energy recovery through the system also boosts the performance and efficiency of the machine's swing function.

All this energy efficiency translates into a smaller engine and cooling system doing the same work as a larger system, which ultimately results in more work done for less fuel and fewer greenhouse gasses. Additionally, with greater power on tap, cycle times can be shortened, such as when loading a truck, which contributes overall efficiency to the work and cost benefits to the contractor.

Source: https://www.equipmentworld.com/equipment/article/15114599/volvo-ce-in-trials-to-developed-more-efficient-excavators

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