EXPERIMENTAL EVALUATION OF SYSTEM EFFICIENCY FOR A HYDRAULIC HYBRID ARCHITECTURE OF EXCAVATORS

Abstract

Development and research for an Open Center System (OC-System), which is typically used for excavators, has been conducted from the perspective of hydraulic efficiency. However, total system efficiency including the internal combustion engine (ICE) has not been considered thoroughly. On the other hand, a Constant Pressure System (CP-System) enabling the engine to be driven optimally is developed but is not accepted in the industry due to the complexity of the required components. Thus in this research, a hybrid system combining an OC-System with a CP-System is proposed enhancing the total system efficiency. The new system consists of an open center valve, an accumulator and a minimum of required components for the CP-System. In order to confirm the system efficiency, experiments are conducted with a test rig based on a 7t excavator. The test results lead to an estimated reduction in fuel consumption of 16 % compared to the conventional OC-System.

Recommended articles

DESIGN OF SIMULATION-EMULATION LOGISTICS SYSTEM

GREGOR MILAN, ROBERT HODON, VLADIMIRA BINASOVA, LUBOSLAV DULINA, MARTIN GASO
Keywords: innovative system | logistics system | emulation | Simulation

MEASURING OF ROTARY AIR MOTORS CHARACTERISTICS

LUKAS DVORAK, KAMIL FOJTASEK
Keywords: mathematical model | measurement | air motor

THEORETICAL AND EXPERIMENTAL ANALYSIS OF THE BEARING JOURNAL MOTION DUE TO FLUID FORCE CAUSED BY THE OIL FILM

JIRI TUMA, MILADA KOZUBKOVA, MIROSLAV PAWLENKA, MIROSLAV MAHDAL, JIRI SIMEK
Keywords: muszynska model | fluid forces | reynolds equation | journal bearings

DEVELOPMENT OF REVERSE ENGINEERING METHODODOLGY FOR THE PRODUCTION OF MACHINE PART

ARAVINDPRASAD SRIKANTHAN, RADOMIR MENDRICKY, PETR KELLER
Keywords: gom inspect | edgecam | solid model | geomagic design x | polygonal mesh | atos ii 400 | reverse engineering