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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.
저마찰 박막코팅 적용 타펫 부품의 마찰 특성에 관한 연구
서준호(JoonHo Seo),임대순(DaeSoon Lim),나병철(ByungChul Na) 한국트라이볼로지학회 2009 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.25 No.4
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.
서준호(Joonho Seo),나병철(Byungchul Na),김진용(Jinyong Kim),박승욱(Seunguk Park),임대순(DaeSoon Lim) 한국자동차공학회 2008 한국 자동차공학회논문집 Vol.16 No.3
This research aims to develop parts for advanced fuel/oil filtering re-circulation applicable to this kind of regulation proof engines. These parts can play a role of converting traditional air emission type crankcase into recovery type crankcase so that the engine can deal with environmental regulations, which do not allow minimal amount of toxic gas discharge. For the experiment, test method and specially made testing equipment are prepared. The results showed that oil separation efficiency of the cone type CCV(Crank Case Ventilation) system was higher than one of cylinder type both in bench test and in engine.
동력 손실 저감형 CAMSHAFT 표면개질에 관한 연구
서준호(JoonHo Seo),나병철(ByungChul Na),김진용(JinYong Kim),박승욱(SeungUk Park),김현철(HyunChul Kim),이봉현(BongHyun Lee),임대순(DaeSoon Lim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The friction and wear behaviors of MoS₂, MoS₂+PAI, DLC coatings were investigated by using a ball and disk type tester. The material of disk specimens were used PFC2(material of camshaft). The profile and coating film of coated specimens were observed by Non-contact type Optical Surface Measuring System and electron microscope. The results showed that friction coefficient of the MOS₂, MoS₂+PAI, DLC coating specimens were lower than one of non coating specimen and that friction coefficient increased with increasing normal load. Also MoS₂ coating specimen had a short wear life but MoS₂+PAI, DLC coating specimens had a longer wear life.
저마찰/내마모 Coating에 대한 밸브트레인계 적용에 관한 연구
서준호(JoonHo Seo),나병철(ByungChul Na),김진용(JinYong Kim),박승욱(SeungUk Park),이영민(YoungMin Lee),최승배(SeungBae Choi),임대순(DaeSoon Lim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The coated specimens for cam-tappet wear test were producted by using PVD and polymer coating technique. Low friction/Low wear coating were applied WC/C, CrN, WC/C+CrN, MoS₂+PAI, MoS₂+PEEK coating. The profile of coated specimens were observed by non-contact type Optical Surface Measuring System and The friction-wear behaviors of coated specimens were investigated by using cam-tappet type wear tester. The results showed that frictional torque of the WC/C, WC/C+CrN, MoS₂+PAI, MoS₂+PEEK coated specimens were lower than one of non-coating specimen.
실린더 해드커버 일체형 오일분리장치의 성능평가에 관한 연구
서준호(Joonho Seo),나병철(Byungchul Na),김진용(Jinyong Kim),박승욱(Seunguk Park),김현철(Hyunchul Kim),조승범(Seungbeom Cho),임대순(DaeSoon Lim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
This research aims to develop parts for Advanced Fuel/Oil Filtering Re-circulation applicable to this kind of regulation proof engines. These parts can play a role of converting traditional air emission type crankcase into recovery type crankcase so that the engine can deal with environmental regulations, which do not allow minimal amount of toxic gas discharge. For the experiment, test method and specially made testing equipment are prepared. The results showed that Oil separation efficiency of the oil separator was about 60% in 4000rpm and 6000rpm condition.
CCV(Crank Case Ventilation) 성능평가에 관한 연구
서준호(Joonho Seo),나병철(Byungchul Na),김진용(Jinyong Kim),박승욱(Seunguk Park),김현철(Hyunchul Kim),이봉현(BongHyun Lee),최승배(Seungbae Choi),임대순(DaeSoon Lim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This research aims to develop parts for Advanced Fuel/Oil Filtering Re-circulation applicable to this kind of regulation proof engines. These parts can playa role of converting traditional air emission type crankcase into recovery type crankcase so that the engine can deal with environmental regulations, which do not allow minimal amount of toxic gas discharge. For the experiment, test method and specially made testing equipment are prepared. The results showed that Oil separation efficiency of the Cone type CCV system was higher than one of Cylinder type in bench test and that Oil separation efficiency of the Multi Cone type CCV system was higher than one of Single Cone type in vehicle test.