직접분사방식 5기통 디젤엔진 주요 부품을 식스 시그마의R＆D 프로세스인 DFSS의 제어 인자를 선정하여 다구찌 방법에 의한 최적화 설계로 신뢰성 평가를 수행한 결과 크랭크트레인 계의 강성을 확보 와 비틀림 진동을 저감하기 위한 ...
직접분사방식 5기통 디젤엔진 주요 부품을 식스 시그마의R＆D 프로세스인 DFSS의 제어 인자를 선정하여 다구찌 방법에 의한 최적화 설계로 신뢰성 평가를 수행한 결과 크랭크트레인 계의 강성을 확보 와 비틀림 진동을 저감하기 위한 댐퍼 설계 시, 비스코스 댐퍼 대비 경량 및 저 비용의 고무 댐퍼를 적용하여 효율적인 시스템을 구성할 수 있고 크랭크 샤프트의 강성으로 이를 증대하기 위해 웹의 형상 변경이나 저널부의 외경을 크게 하지만 이에 따른 무게 및 마찰력 증대에 따른 손실을 고려하여 댐퍼의 종류나 사양을 결정하여 설계를 진행해야 한다.
댐퍼의 구조의 케이블 단선 문제와 관련하여, 다구찌 방법을 통한 최적 조건을 구하여 내구 개선에 적용하였다.
크랭크축 웹 형상에 있어서 메인 저널의 중심선 기준으로 상/하 단부의 웹 두께를 오목하게 변경하여 중량저감을 실현과 다양한 형상의 웹을 설계하였으며 저널 및 핀 저널 필렛부에 충분한 안전 여유를 가진 것으로 판단 되었으며, 비틀림 진동 진폭 및 비틀림응력과 같은 비틀림 강성 역시 확보 하였다.
직접분사방식 5기통 디젤엔진 주요 부품을 식스 시그마의R＆D 프로세스인 DFSS의 제어 인자를 선정하여 다구찌 방법에 의한 최적화 설계로 신뢰성 평가를 수행한 결과 크랭크 트레인 계의 강성을 확보 와 비틀림 진동을 저감하기 위한 댐퍼 설계 시, 비스코스 댐퍼 대비 경량 및 저 비용의 고무 댐퍼를 적용하여 효율적인 시스템을 구성할 수 있고 크랭크 샤프트의 강성으로 이를 증대하기 위해 웹의 형상 변경이나 저널부의 외경을 크게 하지만 이에 따른 무게 및 마찰력 증대에 따른 손실을 고려하여 댐퍼의 종류나 사양을 결정하여 설계를 진행해야 한다.
댐퍼의 구조의 케이블 단선 문제와 관련하여, 다구찌 방법을 통한 최적 조건을 구하여 내구 개선에 적용하였다.
크랭크축 웹 형상에 있어서 메인 저널의 중심선 기준으로 상/하 단부의 웹 두께를 오목하게 변경하여 중량저감을 실현과 다양한 형상의 웹을 설계하였으며 저널 및 핀 저널 필렛부에 충분한 안전 여유를 가진 것으로 판단 되었으며, 비틀림 진동 진폭 및 비틀림 응력과 같은 비틀림 강성 역시 확보 하였다.
It is possible for small sized and high speed diesel engines by development of common rail system. And in order to increase the engine performance, the cylinder firing pressure is a tendency which increases. On the other side, the weight of engine becomes lightly in spit of high performance diesel e...
It is possible for small sized and high speed diesel engines by development of common rail system. And in order to increase the engine performance, the cylinder firing pressure is a tendency which increases. On the other side, the weight of engine becomes lightly in spit of high performance diesel engine. Therefore, the weight optimization for engine components is very important point on the design process. Also, the weight optimization must necessarily be considered the robust design against a fatigue failure.
Interest in Six sigma method for improving the field claim has been growing. The Six sigma method is based on statistics, so it provides very scientific and effective ways to solve problems. The oil leaking problem at rear axle of SUV has been one of the chronic field claim item. Its MTTF is less than warranty period, so urgent countermeasure is needed to reduce the quality cost and elevate the reliability of company through the customer satisfaction.
As the vehicle components are various, we confront unexpected problems in the development and application of them. also warranty expenses occur in the result of unconfirmed warranty. In this paper, to solve the problems of disconnection of damper Strut cable, we applied the optimum conditions through Taguchi method for improvement of durability. and we made standard of reliability by weibull analysis of the field data. we acquired reliability standard by correlation with lab data and confirmed improved components satisfying the target of reliability.
In this study, the control factors of rubber damper, the moment of inertia ring, stiffness of damper and damping coefficient of ring, were investigated by DFSS method through the analysis work and the measurement in the real engine condition.
This study focused on Reliability Growth Test(RGT), it was established by reliability (life, MTTF, Cumulative density function..etc) under co-relation of durability test data and warranty data. And evaluate acceleration factor for durability test in Weibull distribution.
It is possible for small sized and high speed diesel engines by development of common rail system. And in order to increase the engine performance, the cylinder firing pressure is a tendency which increases. On the other side, the weight of engine becomes lightly in spit of high performance diesel engine. Therefore, the weight optimization for engine components is very important point on the design process. Also, the weight optimization must necessarily be considered the robust design against a fatigue failure.
Interest in Six sigma method for improving the field claim has been growing. The Six sigma method is based on statistics, so it provides very scientific and effective ways to solve problems. The oil leaking problem at rear axle of SUV has been one of the chronic field claim item. Its MTTF is less than warranty period, so urgent countermeasure is needed to reduce the quality cost and elevate the reliability of company through the customer satisfaction.
As the vehicle components are various, we confront unexpected problems in the development and application of them. also warranty expenses occur in the result of unconfirmed warranty. In this paper, to solve the problems of disconnection of damper Strut cable, we applied the optimum conditions through Taguchi method for improvement of durability. and we made standard of reliability by weibull analysis of the field data. we acquired reliability standard by correlation with lab data and confirmed improved components satisfying the target of reliability.
In this study, the control factors of rubber damper, the moment of inertia ring, stiffness of damper and damping coefficient of ring, were investigated by DFSS method through the analysis work and the measurement in the real engine condition.
This study focused on Reliability Growth Test(RGT), it was established by reliability (life, MTTF, Cumulative density function..etc) under co-relation of durability test data and warranty data. And evaluate acceleration factor for durability test in Weibull distribution.
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