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전영돈(Yeongdon Jeon),노명현(Myunghyun Roh),장인태(Intae Jang),김성섭(Sungsub Kim),홍윤석(Yoonseok Hong) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
This study was carried out the safety standard and performance evaluation method for the brake lining, which is applied to the brake system of the vehicle. There is no test method capable of evaluaing the safety standards without performance brake linings. Analyze the UN regulation No.90 conducted an evaluation test, it was investigated validity. In the vehicle test, utilizing the passenger cars and vans, comparative analysis of the oem and as. In the dynamometer, comparative analysis of the oem and as. Furthermore, by analyzing the results of the actual vehicle test, we performed the dynamo tested in the same test method, the results of analysis of the results, it was possible to prove the validity in some test list. However, when applying the safety standards, since the scope of international standards oe are different, it is difficult to apply the actual vehicle tests and dynamo test domestic. We must analyze test data through many dynamo test for the introduction of performance criteria of a brake lining.
전영돈(Youngdon Jeon),노명현(Myunghyun Roh),김성섭(Sungsub Kim),남궁석완(Suckwhan-Namgung) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
In this study, we was decided to enhance the performance standard of the endurance braking system is on method for analyzing and accident it is estimated failure of the brake when the tour bus to downhill travel, preventing accidents and reducing. A result of the current, there is a performance reference value of the endurance braking system safety standards of the vehicle, but it was to investigate the road gradient of domestic, it is too low it was confirmed 솜 performance reference value. The curret standards, we have applied the exhaust brake performance level of the endurance braking system. Thus results of testing using the bus equipped with retarder brake and exhaust brake the road in korea, it was found that it is possible retarder brak prevent overheating of the braking from the retarder. Differences in the longer case appear larger distance downhill. Therefore, it is to be expected the effect of reducing accidents increases the retarder brake mounting rate, the value of the deceleration of the motor vehicle safety standards of the current also increases the retarder braking performance value.
안장모(Jangmo Ahn),조광상(Gwangsang Cho),최인성(Insung Choi),노명현(Myunghyun Roh),최선모(Sunmo Choi) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The main purpose of this study is a development of safety evaluation technique of regenerative braking system. For development of safety evaluation technique of regenerative braking system, it has been carried out system analysis for two hybrid electric vehicles equipped with regenerative braking system. In order to determine the applicability of Korea vehicle safety regulation, it has been tested brake safety performance test according to Korea vehicle safety regulation. During the braking test, some problems were revealed. Toyota prius regenerative braking system has unique control logic to improve the fuel efficiency and braking transient region was found. Current Korea vehicle safety regulation has limitations to evaluate above system. In addition, this paper compares two kinds of regulations(ECE Reg. No. 13H and FMVSS No. 135) including regenerative braking system. The results of this paper will be used for the amendment of Korea vehicle safety regulation.
최승환(Seunghwan Choi),곽진호(Jinho Kwak),김명일(Myungil Kim),노명현(Myunghyun Roh),권해붕(Haeboung Kwon),최선모(Sunmo Choi) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In case of conventional speed humps, there are problems of grounding because of the induced heavy pitching motion for the buses especially. Therefore it is strongly needed to new vehicle speed reduction schemes. It will be thought that speed cushions do not generally cause excessive discomfort to passengers of large buses, or excessive discomfort to emergency vehicles such as fire service vehicles or ambulances. To optimize the shape of speed cushion which is replaced with the conventional speed humps, the specifications of the domestic vehicles are surveyed. Based on these survey results, several types of speed cushions are designed and the vertical acceleration data are acquired through the 3D-accelerometers. Two-types of design with heights of 75 or 100 ㎜, plateau width of 1400 ㎜, plateau length of 2400 ㎜, ramp slope of 1-in-8 and side slope of 1-in-4 would give the least effect on buses while still causing discomfort for car occupants.
국내자동차안전도평가 제동안정성부문 시험결과 및 개선방안에 관한 연구
안장모(Jangmo Ahn),조광상(Gwangsang Cho),최인성(Insung Choi),노명현(Myunghyun Roh),권해붕(Haeboong Kwon),최선모(Sunmo Choi) 한국자동차공학회 2006 한국자동차공학회 Symposium Vol.- No.-
This paper provides an overview of the Korea Brake NCAP results and test procedure from 2001 to 2005 and compares Korea NCAP procedure with that of other country(US, Japan). Four factors of measuring stop distance reveal disturbances of the precise measuring stopping distance. For the tire bed-in procedure, ABS full cycling stops over the 20 times lead to a convergence of stopping distance. For the effective management of the test surface, Reduction of the test surface temperature range and the measuring of the peak friction coefficient are needed to reduce the brake test errors. also, the new rate of pedal application is defined and initial brake temperature is suggested same test condition of US and Japan.