Excavator Energy-saving Technology Research Based on Arm Independent Meter-in Valve

ZHAO Jin-guang, CUI Cheng-long, DONG Zhao-sheng

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CHINESE HYDRAULICS & PNEUMATICS ›› 2024, Vol. 48 ›› Issue (5) : 158-167. DOI: 10.11832/j.issn.1000-4858.2024.05.020

Excavator Energy-saving Technology Research Based on Arm Independent Meter-in Valve

  • ZHAO Jin-guang1, CUI Cheng-long2, DONG Zhao-sheng1
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Abstract

Developing hi-efficiency hydraulic valve by reducing meter-in and meter-out throttling loss is one of the main methods to reduce excavator fuel consumption. For the energy saving goal, the thought of reducing energy loss by designing a new arm valve is confirmed on the basis of energy loss mechanism of excavator hydraulic valve. And based on this thought, a hydraulic valve with independent arm meter-in solution is designed, including meter-in valve and arm valve spool design, and the control algorithm of them is also developed. The designed hydraulic valve is installed on one 21 t excavator and after commissioning of the electronic control system, the machine can fulfill all the operating performance requirement. Finally, a comparison test is implemented between this machine and another 21 t excavator which using the same diesel engine and hydraulic pumps. The results show that its fuel saving effect is obvious under the same grading conditions.

Key words

electronic control / excavator / arm / independent meter-in / hydraulic valve / energy-saving

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ZHAO Jin-guang, CUI Cheng-long, DONG Zhao-sheng. Excavator Energy-saving Technology Research Based on Arm Independent Meter-in Valve[J]. CHINESE HYDRAULICS & PNEUMATICS. 2024, 48(5): 158-167. https://doi.org/10.11832/j.issn.1000-4858.2024.05.020

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