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DC 리액터를 이용한 자동차 알터네이터의 구동력 제한과 카오디오 노이즈 필터링 효과에 관한 연구
박봉석(Bong-Seok Park),허정준(Jung-Jun Her) 산업기술교육훈련학회 2019 산업기술연구논문지 (JITR) Vol.24 No.4
Fuel efficiency improvement technology using power generation control is becoming more advanced. However, the operating environment on the road is not the same as the control logic, thus its efficiency is small. In this study, the method of limiting the driving force of the alternator using a DC reactor is a simple system that uses the characteristics of the coil. The changes of engine load ratio and injector fuel injection amount were analyzedusing a vehicle equipped with two alternators We also confirmed how to improve the sound quality of car audio by applying a noise filter. To propose a method of improving the fuel efficiency of automobiles by the method identified in this study, further research on the mounting position and the miniaturization of the product is needed.
자동차 엔진룸 전원 그라운드 저항 개선 방법에서 기준점의 변경과 그라운드 보강에 따른 효과
김광석(Kwang-Seok Kim),박봉석(Bong-Seok Park),허정준(Jung-Jun Her) 산업기술교육훈련학회 2021 산업기술연구논문지 (JITR) Vol.26 No.1
In the engine room ground reinforcement work that secures the stability of the electrical device added in the first vehicle and reduces the ground resistance due to the aging of the vehicle, the existing battery ground standard work method and the main power source of the vehicle while driving By experimenting the method of changing the reference point to the alternator ground, we are trying to present a reasonable ground path. For engine blocks used as ground paths and cables used as reinforcing materials in an engine room environment where high heat is generated, TCR values according to temperature changes are measured and used as data for selection of reinforced cables. In addition, as a way to check the effect of ground reinforcement, experiment with changes in engine load factor, shift time lag of automatic transmission, and change in headlight operating current to confirm the objectivity of the ground reinforcement effect, and based on the results obtained from the experiment. It will be used as data that can be referenced in future engine room ground reinforcement work.
라우드니스 등청감곡선에 기반한 자동차 AVN 시스템의 퓨즈 교체형 노이즈필터 개발
박봉석(Bong-Seok Park),박현철(Hyun-cheol Park),허정준(Jung-jun Her) 산업기술교육훈련학회 2020 산업기술연구논문지 (JITR) Vol.25 No.3
With the development of advanced driver assistance systems, the more reliable the autonomous driving technology is, the more the rest and entertainment times of the driver of the car increases. Hence, the importance of the entertainment function of automotive audio-video navigation (AVN) systems is increasing. Currently, the AVN system of automobiles has a monitoring function for fault diagnosis and a combination of functions. Applying these technologies is challenging for drivers who want to tune the audio quality to their musical taste. In this study, a method for upgrading the sound quality using a power supply noise filter without deforming the AVN system was developed. The low-pass attenuation that appeared as a side effect was solved by applying a filter using the loudness isotropic curve. In the installation method of the filter, the method of using a fuse holder minimized the inconvenience of AVN detachment and wiring. Based on the results obtained in this study, further research and improvement of the filter are required for audio tuning of various models.