http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
운행 경유자동차의 과급기 장착유무에 따른 매연 검사기준 개선방안 연구
신재식(Jaesik Shin),양진호(jinho Yang),여운석(Unseok Yeo),김현준(Hyunjun Kim),오세인(Sein Oh),이효열(Hyoyeol Lee),최수광(Sookwang choi) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
Currently, emission inspections of operating vehicles are regularly conducted to improve the air environment. In particular, diesel vehicles are inspected by measuring smoke in free acceleration smoke test procedure through a smoke meter. In addition, if a turbocharger is equipped, the emission standard is relaxed in free acceleration smoke test procedure inspection. However, most currently vehicles are equipped with turbocharger so the standard is not effective. In addition, it is difficult to identify failure of the diesel particulate filter during the inspection. In this study, analyzed the feasibility of abolishing the emission standard according to the turbocharger equipped status based on the inspection data of domestic diesel vehicles. As a result, the smoke emission average increased by 3% according to the equipped of the turbocharger. However, emission standard application errors were found at the level of 20%. In addition, it is not effective because all vehicles manufactured after 2004 are equipped with turbocharger. and it is difficult to check the failure of diesel particulate filter during the inspection. Therefore, it is considered reasonable to abolish the relaxation of the emission standard of diesel vehicles in free acceleration smoke test procedure.
운행 경유자동차의 입자개수(PN) 검사 타당성 검토에 관한 연구
양진호(Jinho Yang),조현우(Hyunwoo Jo),김현준(Hyunjun Kim),여운석(Unseok Yeo),이호상(Hosang Lee),이효열(Hyoyeol Lee),류익희(Ikhui Ryu) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
Ultrafine particles emitted from diesel vehicles contain heavy metals and hazardous chemicals, causing diseases such as stroke, which is more harmful to the human body. For this reason, PN regulations were introduced for vehicle sold after 2012. However, current smoke tests measuring opacity cannot be PN measured, and even if DPF is removed or damaged as diesel engines improve, it is difficult to detect defects through smoke tests. To solve this problem, we tried to examine the feasibility of PN inspection of a in used diesel vehicle. A defective DPF was installed in a vehicle with a normal DPF. And the PN, diagnostics, and the smoke concentration were measured and compared. As a result, no DPF defects could be found in the smoke test and OBD test. However, in the PN inspection, DPF defects were confirmed. Therefore, it is necessary to introduce PN inspection in Korea to detect DPF defects early and regulate ultrafine particles.
레이더 센서 장착 자동차의 전방충돌경고·보호 장치 오작동 시험 분석 연구
박지양(Jiyang Park),권영문(yeongmun Gwon),정재환(Jaehwan Jeong),나대영(Daeyoung Ra),박상협(Sanghyeop Park),이효열(Hyoyeol Lee),최수광(Sookwang choi) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
Advanced device-equipped Vehicles are actively developed and legislation is underway around the world. As a result, Automobile manufacturers and others aim to continue research on high-tech devices and develop high-performance devices. These state-of-the-art vehicles are the most basic devices of autonomous vehicles. The automobile industry is progressing very quickly, but the number of malfunctions in high-tech devices is also increasing. In particular, in the case of Autonomous Emergency Braking(AEB), it is essential to lead to an Accident when a malfunction occurs. Typical high-tech devices include camera sensors and radar sensors. Both sensors are connected and operated, but radar sensors are mainly longitudinal and camera sensors are mainly lateral. Accordingly, this study analyzes AEB devices that can cause accidents when malfunctioning, it deliberately malfunctions the highly relevant radar sensor to determine to what extent the radar sensor’s performance persists. We want to analyze the risk of malfunction and the limitations of radar sensors through comparative analysis with existing automobile manufacturing standards and CAN data.
김현준(Hyunjun Kim),여운석(Unseok Weo),신재식(Jaesik Shin),조현우(Hyunwoo Jo),이호상(Hosang Lee),이효열(Hyoyeol Lee) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
Currently, law and regulations on air environment improvement are being strengthened. Although used-vehicle emission inspections are being strengthened, emission inspections of construction machinery are notbeing implemented. Among construction machinery, dump trucks, concrete mixer trucks, and concrete pump trucks have similar structures to automobiles, so it is possible to reinforce exhaust gas inspection, In this study, we test whether load tests are possible for dump trucks, concrete mixer trucks, and concrete pump trucks, and then we study maintenance plans. As a result, it it possible to apply the inspection of construction machinery to the lud-down3 mode, which is being implemented in korea, and to reduce smoke by changing engine oil.