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다단 자동변속기용 유압 비례제어 솔레노이드 밸브의 CFD 해석
이기수(Geesoo Lee),김현철(Hyunchul Kim),성형진(Hyungjin Sung),허형석(Hyungseok Heo),이현우(Hyunwoo Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
Three-dimensional numerical simulations were carried out to investigate the flow dynamic behavior and pressure characteristics of a variable force solenoid (VFS) valve used in automatic transmissions. To visualize the dynamic movement of the spool, a moving mesh with dynamic layering meshes for varying boundary conditions was employed. The motional direction and the speed of the spool were taken into account in the modeling of the VFS valve. The results of Model D, which takes into account both leakage and notches, indicate that there is a linear pressure response in the range of valve overlap and that there are smooth pressure control characteristics in the range of the two notches. Although the effects of magnetic materials were not included, the VFS with a spool was shown to have an unavoidable and unique hysteresis. This hysteresis can be minimized or maintained at low levels by adjusting the relation between the notch depth and the characteristic length.
양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it's lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.
유압 비례제어 솔레노이드 밸브의 스풀형상이 응답특성에 미치는 영향
이기수(Geesoo Lee),김대현(Daehyun Kim),김현철(Hyunchul Kim),성형진(Hyungjin Sung),이현우(Hyunwoo Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Three-dimensional numerical simulations were carried out to investigate the flow dynamic behavior and pressure characteristics of a variable force solenoid (VFS) valve used in automatic transmissions. To visualize the dynamic movement of the spool, a moving mesh with dynamic layering meshes for varying boundary conditions was employed. The reliability of the employed analysis was demonstrated by the comparison between numerical results and experimental data. The modeling of the VFS valve and the notch depth of the delay parts of the spool was taken into account in analysis. The effects of varying the oil temperature on the pressure sensitivity curves and the seal leakage flow rates were investigated. The VFS valve was characterized by determining the variation in the equivalent orifice area (EOA)with the spool displacement. The pressure sensitivity curves were found to be precisely controlled by the relation between the depth and the area of the notch in the range of the characteristic length of the valve.
양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But its lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.
양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it’s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.
양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it's lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.
양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it"s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.
양갑진(Kabjin Yang),이현우(Hyunwoo Lee),이창훈(Changhoon Lee),성형진(Hyungjin Sung),김현철(Hyunchul Kim),이기수(Gisu Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
An automatic transmission of a car is computerized for fuel efficiency improvement with safety and the convenience, and is applied, and is the tendency which expands. The best in new technical development by a domestic and abroad professional part producer to an automatic transmission and system development for gear control. But it’s lack of the quality standard and the reliability by the country and is the standard which evades development and depends on overseas forward part traders for technical development. The automatic transmission attachment rate increases direct hydraulic control system for gear control of an automatic transmission by Customer Request as well as global market competitive power securement and market preceding acquisition through the import substitution effect by development this, so technical development to this field and technological growth are requested by a completed car and a close consortium. In this paper cutting down time being needed for an optimization design and trial product development through an electromagnetic field interpretation and a computational fluid dynamics interpretation in development of the hydraulic control solenoid valve applied to an automatic transmission, and contributing to development expense reduction effect by efficiency-development tends to grasp an hydraulic control solenoid valve and valve body matching.