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IDLE 진동저감용 능동형 엔진마운팅 시스템 개발을 위한 차량시험방법에 대한 연구
박승욱(Seunguk Park),나병철(Byungchul Na),김정훈(Jeonghun Kim),최재용(Jaeyong Choi) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Operating range of automobile engine including low speed (~500rpm) and it makes remarkable vibration when vehicle stop temporary. One of requirement for modern automobile is vibration reduction and it need more attention to detail. Making control logic for idle range operating active engine mount system can be easy compared with full active engine mount system because idle range active mount can be controlled based on lookup table according to case by case and a number of cases are limited and predictable. The things that Most of vehicle idle states can be revived by experimenter and limited numbers of idle states can make lookup table for control logic of active engine mount and it can be achieved by experimental method. The subject of this paper is experimental method collecting data for making control logic of idle range active engine mount and examples of experimental result including review.
박승욱(SeungUk Park),나병철(ByungChul Na),김진용(JinYong Kim),서준호(JoonHo Seo),이영민(YoungMin Lee),김현철(HyunChul Kim),이봉현(BongHyun Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Water separating performance of fuel filter for common rail(CR) diesel engine is very important. Water in fuel bring problem to precision fuel supply components of engine. At the point of view of domestic vehicle market, CR diesel engine is spreaded so widely but almost of fuel filter paper for CR diesel engine is imported because water separation ability is very important characteristic and it is difficult to satisfy required performance. Method for water separation ability of fuel filter was performed using filter finished product. This method was difficult to understand paper own water separating characteristic and required assembled filter. An aim of this research is creating new water separation test method for paper itself and evaluating validity of developed test method.
커먼레일 엔진 연료필터용 여지 수분 분리능 시험법에 관한 연구
박승욱(SeungUk Park),나병철(ByungChul Na),김진용(JinYong Kim),서준호(JoonHo Seo),이영민(YoungMin Lee),곽규범(KyuBum Kwak),최승배(SeungBae Choi) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Water in fuel bring problem to precision fuel supply components of common rail diesel engine. At the point of view of domestic vehicle market, CR diesel engine is spreaded so widely but almost of fuel filter paper for CR diesel engine is imported because water separation ability is very important characteristic and it is difficult to satisfy required performance. Method for water separation ability of fuel filter was performed using filter finished product. This method was difficult to understand paper own water separating characteristic and required assembled filter. The aim of this research is creating new water separation test method for paper itself and evaluating validity of developed test method. Variation of filter area are bring about changing of fuel flow rate/pressure difference ratio and effect of this changing must be discovered.
휠 센서를 이용한 타이어와 지면간 마찰계수 추정 및 측정오차에 관한 연구
박승욱(Seunguk Park),김경웅(Kyungwoong Kim),나병철(Byungchul Na) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_2
If the real-time maximum traction force between the tire and the road can be precisely estimated. it would be easier to control the vehicle behavior. Usually, estimation of friction coefficient requires tire tread stiffness and tire contact length on road surface. But in this research, tire tread stiffness property and contact length are obtained from traction force and self-aligning moment. Using the estimation method introduced in this paper, only required parameters are lateral, longitudinal, vertical force, self-aligning moment and rotational speeds of all wheel. Isotropic tire brush model is used to obtain the equations of traction force and self-aligning moment. Validation of developed algorithm is performed based on real tire data, and the possibility of friction coefficient estimation is confirmed. Error analysis of wheel sensor error was also concerned.
배출가스 분석을 통한 연소식 에어히터용 저온전용 시험에 관한 연구
박승욱(SeungUk Park),나병철(ByungChul Na),김진용(JinYong Kim),서준호(JoonHo Seo),김현철(HyunChul Kim),이봉현(BongHyun Lee),석경호(KyungHo Seok),최승배(SeungBae Choi) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The efficiency of common rail diesel engine is higher and higher, the loss of heat is lower and lower. It means it is difficult to use waste heat of engine for air conditioning. For that reason, engine independent heater for cabin room was required and fuel air heater was developed. Domestic requirenemt of Fuel pre heater is higher, t localization of the heater is required. Test method for fuel pre heater have to be developed because operation condition is severe and climate of domestic region is mild compared with other northern country. This research carried out analysis of exhaust gas of heater prototype and development of low temperature heater start tester. Low temperature start test result through test equipment was clearly visible.
전사적 빅데이터를 활용한 서비스 중심적 공공 조직 및 인사 관리 방안
최정희 ( Jeonghee Choi ),박승욱 ( Seunguk Park ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
본 연구는 공공 조직 및 인사 관리의 새로운 패러다임으로서 서비스 중심적 접근법을 제시하였다. 특히 코로나19 팬데믹 이후의 불확실하고 경쟁적인 환경에서는 파편화된 데이터를 마이크로 서비스화하고 동적으로 재조합하는 것이 중요하며, 이를 실현하기 위한 모델로 KISTI의 ScienceON API Gateway와 시나리오 활용 서비스를 참고하였다. 이러한 접근법은 조직 및 인사 관리의 투명성과 효율성을 높이며, 서비스-이용자 간 상호작용을 강화하고, 조직의 변화를 촉진하는 데 기여할 것으로 기대된다.
손현철(Hyunchul Sohn),박승욱(Seunguk Park),박성욱(SungUk Park) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
Anti-vibration rubbers are applied to vehicle suspension systems. Generally, conventional type rubber has good isolation performance at high frequency range due to low dynamic stiffness. But, it isn’t suitable for use at resonance occurrence because of low damping coefficient. Therefore, many hydraulic bushes are used in vehicle to reduce vibration and noise caused by structure resonance. Hydraulic bush consists of main rubber part and fluid part. Main rubber part plays an elastic role (stiffness), and fluid part plays a viscose role (damping).Hydraulic bushes are classified by inertia track type. Kinematic type has inertia track with long length and wide area, and has low volume stiffness. Friction type has inertia track with short length and narrow area, and has high volume stiffness. Hybrid type has middle property between kinematic type and friction type. In this paper, we experiment vehicle brake judder test by using these hydraulic bush types. To make brake judder, we make specially brake disc by machining. We are measured displacements and accelerations at radial and axial directions of hydraulic bushes under braking 0.7G, 0.5G, and 0.2G conditions. Finally, we can find hydraulic parameters with high sensitivity of brake judder performance.
동력손실 저감을 위한 Tappet 부품의 트라이볼로지 특성에 관한연구
서준호(JoonHo Seo),임대순(DaeSoon Lim),김진용(JinYong Kim),박승욱(SeungUk Park),조승범(SeungBeom Cho),나병철(ByungChul Na) 한국트라이볼로지학회 2009 한국트라이볼로지학회 학술대회 Vol.2009 No.6
The wear of the contact in the tappet accounts for the greatest portion of entire friction loss of an engine, leading to the occurrence of abnormal wear. The coated specimens for cam-tappet wear test were producted by using PVD-Sputtering coating method. It examined the friction characteristics occurring between the cam and the tappet by using the dedicated wear tester and found that the friction torque value was reduced through comparison testing with the existing part when the low friction coating was applied. So application of the low friction coating to actual vehicles will reduce the fuel economy and occurrence of noise-vibration.