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이강윤(Kangyoon Lee),김대경(Daekyung Kim),오병걸(Byounggul Oh),선우명호(Myoungho Sunwoo) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
In this paper, we proposed a new boosting device for internal combustion engines using dynamic pressure. The boosting device is inspired by the concept of boost converter in electrical system. The proposed boosting device is composed of a fan blowing air into an intake manifold, a bypass, and a bypass valve. By using the fan and the bypass valve, kinetic energy of a working fluid is translated into pressure energy. Consequently, the intake manifold pressure is increased due to the pressure energy. The feasibility of the proposed boosting device was validated by a commercial 1-D engine model, GT-power.
가구당 기기별 에너지 사용량 예측을 위한 딥러닝 모델의 설계 및 구현
이주희 ( JuHui Lee ),이강윤 ( KangYoon Lee ) (사)한국빅데이터학회 2021 한국빅데이터학회 학회지 Vol.6 No.1
우리나라는 자원 빈국인 동시에 에너지 다소비 국가이다. 또한 전기 에너지에 대한 사용량 및 의존도가 매우 높고, 총 에너지 사용의 20% 이상은 건물에서 소비된다. 딥러닝과 머신러닝에 대한 연구가 활발해지면서 다양한 알고리즘을 에너지 효율 분야에 적용하려는 연구가 진행되고 있으며, 에너지의 효율적인 관리를 위한 건물에너지관리시스템(BEMS)의 도입이 늘어가는 추세이다. 본 논문에서는 스마트플러그를 이용하여 직접 수집한 가구당 기기별 에너지 사용량을 바탕으로 데이터베이스를 구축하였다. 또한 RNN과 LSTM 모델을 이용하여 수집한 데이터를 효과적으로 분석 및 예측하는 알고리즘을 구현하였다. 추후 이 데이터는 에너지 사용량 예측을 넘어 전력 소비 패턴 분석 등에 적용할 수 있다. 이는 에너지 효율 개선에 도움이 될 수 있으며, 미래 데이터의 예측을 통해 효과적인 전력 사용량 관리에 도움을 줄 것으로 기대된다. Korea is both a resource-poor country and a energy-consuming country. In addition, the use and dependence on electricity is very high, and more than 20% of total energy use is consumed in buildings. As research on deep learning and machine learning is active, research is underway to apply various algorithms to energy efficiency fields, and the introduction of building energy management systems (BEMS) for efficient energy management is increasing. In this paper, we constructed a database based on energy usage by device per household directly collected using smart plugs. We also implement algorithms that effectively analyze and predict the data collected using RNN and LSTM models. In the future, this data can be applied to analysis of power consumption patterns beyond prediction of energy consumption. This can help improve energy efficiency and is expected to help manage effective power usage through prediction of future data.
심한섭(Hansub Sim),이강윤(Kangyoon Lee),김석주(Sukju Kim),선우명호(Myoungho Sunwoo) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
LPG is one of the most promising alternative fuels for low emission vehicle because it has higher octane number and lower maximum combustion temperature than gasoline. In this study, a prototype electronic control unit for an LPG engine with a feedback mixer is designed and evaluated. Some modifications are carried out to the production LPG engine for electronic control of spark timing and fuel. While spark timing is controlled in the crank angle base, fuel control is performed in the time base for more accurate engine control. A PI controller is designed and implemented in the ECU in order to handle more accurate air/fuel control. At the low RPM operation, it is difficult to meet the stoichiometric air/fuel ratio due to poor fuel feeding which is the nature of FBM-LPG engines. However during the high RPM operation, the variation of air/fuel ratio from the stoichiometric is decreased, thus the emission of its engine is reduced.<br/>
[가솔린엔진부문] LPG 액체분사엔진의 연료 분사 제어에 관한 연구
심한섭(Hansub Sim),이강윤(Kangyoon Lee),선우명호(Myoungho Sunwoo),이수룡(Suryong Lee) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_1
Liquified petroleum gas(LPG) is used into the spark ignition(SI) engines. Fuel injection rate of an injector is affected by fuel temperatures and pressure differences in the LPG liquid injection systems as a multi-point-injection(MPI) and a direct injection(DI) into cylinder.<br/> In this study, a compensation factor for the fuel injection rate of the injector is derived from the density ratio and the pressure difference ratio. A compensation method of fuel injection duration is proposed to design for a fuel injection control system.<br/> The experimental results for the LPG liquid injection system in the SI engine show that this system works well for all speed and load conditions, and the air-fuel ratio is accurately controlled by the compensation factor.<br/>
연료전지 하이브리드 자동차의 다중 동력 시스템에 대한 용량 최적화에 관한 연구
김장호(Jangho Kim),이강윤(Kangyoon Lee),선우명호(Myoungho sunwoo) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Emission regulation and CO₂ reduction issues have led to development of a Fuel Cell Hybrid<br/> Electric Vehicle(FCHEV) as a better fuel efficiency and lower emission vehicle. For<br/> guaranteeing the reliability of FCHEV's power sources. electric double layer capacitor(EDLC) is introduced into the conventional generic hybrid power system composed of fuel cell system and battery This alternative power system is a multi-power source hybrid system including fuel cell<br/> system. battery, and EDLC. This paper proposes a sizing optimization method for the<br/> multi-power source hybrid system by considering efficiency and performance of the entire system and reliability of power sources.<br/>
Electro-Mechanical Brake 제어 시스템을 위한 전자제어장치의 하드웨어 플랫폼 개발
진성태(Sungtae Jin),이강윤(Kangyoon Lee),김명준(Myoungjune Kim),김주곤(Joogon Kim) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
This paper describes an electric control unit(ECU) hardware platform for an electro-mechanical brake(EMB) control system. In modern vehicles hydraulic and mechanical components are replaced by electrical components. At the same time, increasing complexity of control mechanisms causes new engineering problems in software and hardware development. As one of these technologies, the EMB control system is a brake-by-wire system that can replace conventional hydraulic brake system. This paper introduces the overall concept of hardware design and outlines of the components design to interface sensors and actuators for EMB control system. Finally, the results are confirmed from component-level tests with basic software.
진성태(Sungtae Jin),이강윤(Kangyoon Lee),이우택(Wootaik Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This paper describes implementation and development of Hardware-in-the-Loop Simulation(HILS) system to easily test software functions of Motor Control Unit(MCU) in hybrid electric vehicle. A current automotive ECU has a number of requirements which are legal enforcement, passenger convenience, driver assistance and dynamic drive aspects. These various requirements make the software functions more difficult to enhance reliability. To overcome this problem, this paper presents a better testing environment for maximizing the software quality using the HILS technique. The proposed HILS system can cover not only simulation environment of plant model in real-time but also a means to automatically test the software functions embedded into MCU. For the validation of simulation environment, the experimental results of the developed HILS system are compared with simulation results of the designed plant model on the PC environment. The proposed HILS system will look forward to improving the reliability of software quality and cost-effectiveness of the products.