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굴삭기 작업 모의 동작에 의한 연비 시험 방법 평가 연구(II)
최진구(J. G. Choi),강주영(J. Y. Kang),이정호(J. H. Lee),이충근(C. G. Lee),김주호(J. H. Kim),이대엽(D. Y. Lee) 유공압건설기계학회 2016 유공압건설기계학회 학술대회논문집 Vol.2016 No.11
This work to evaluate a test method to measure fuel consumption of excavators using work simulated motion. For this, a mass flowmeter, to measure fuel consumption in real time, is installed on an excavator. In order to measure the rotational angles within the accuracy of approximately about 14 centimeters, respectively, for bucket, arm, boom, swing, potentiometers are installed at the rotational center of each actuator. When the relation between rotational angle and fuel consumption was analyzed, which has revealed the fuel consumption due to swing is largest. Since fuel consumption varies depending on driving skill of a driver, this work may contribute not only to evaluate a standard method to measure fuel economy of excavators but also to enhance the driver"s driving skill to improve fuel economy at work sites of excavators.
천공유압드릴 장비에서 작업 동작에 따른 연비 측정 및 평가 기술 연구
최진구(J. G. Choi),강주영(J. Y. Kang),김종민(J. M. Kim),배종원(J. W. Bae),이충근(C. G. Lee),이정호(J. H. Lee),김주호(J. H. Kim),이대엽(D. Y. Lee),송윤우(Y. W. Song),김명보(M. B. Kim),조재상(J. S. Cho) 유공압건설기계학회 2017 유공압건설기계학회 학술대회논문집 Vol.2017 No.11
In order to improve the fuel economy of a hydraulic drilling machine, which consumes relatively large amount of fuel compared to other typical construction machinery, a comparison is made between gravimetric fuel consumption using mass flowmeter and CAN signal. And, since the data of CAN signal is close enough to the measured data of a flowmeter, fuel consumption at real work mode is measured and analyzed using CAN signals. A result show that drilling mode occupies about 67.4% of total fuel consumption. It is concluded that this work may contribute to enhance fuel economy of hydraulic drilling machines.
굴삭기 작업 모의 동작에 의한 연비 시험 방법 평가 연구(I)
강주영(J. Y. Kang),최진구(J. G. Choi),이정호(J. H. Lee),이충근(C. G. Lee),이대엽(D. Y. Lee) 유공압건설기계학회 2016 유공압건설기계학회 학술대회논문집 Vol.2016 No.11
This work is to measure and evaluate the fuel consumption of an excavator using a work simulated motion. In order to evaluate the contribution of each actuator on fuel consumption, fuel consumption rate was measured and analyzed while only one actuator is working. Whereas the reported test method, JCMAS, uses empty bucket, several weights are added to bucket, which shows an increase of fuel consumption depending on weight. In this work, engine load and rpm are measured while executing both dig and dump motion and leveling motion. Since as engine RPM increases fuel consumption becomes larger, it is necessary to consider engine operating parameters such as percent load and rpm to make a standard test method in near future.
강주영(J. Y. Kang),오승엽(S. Y. Oh),최진구(J. G. Choi),이정호(J. H. Lee),이충근(C. G. Lee),고상철(S. C. Ko),서지원(J. W. Seo),이대엽(D. Y. Lee) 유공압건설기계학회 2016 유공압건설기계학회 학술대회논문집 Vol.2016 No.6
While the fuel economy of passenger vehicles are measured using a chassis dynamometer, that of construction machinery such as excavators is presumably measured by standard work cycle, which is under examination abroad. In order to measure the fuel consumption under standard work cycle, a measurement methodology, while excavator operates in dynamic(transient) motion, needs to be examined and evaluated. In this work, three methods, such as gravimetry, ECU CAN signal and mass flow meter, are studied and compared. This work reveals that when ECU CAN signal is evaluated compared to gravimetry or mass flowmeter, it could be used to measure the fuel consumption with accuracy and thus evaluate and approve the fuel economy of construction machinery, which will be implemented in near future A further study is scheduled to implement the measurement method at standard work cycle.