农业装备与车辆工程
農業裝備與車輛工程
농업장비여차량공정
AGRICULTURAL EQUIPMENT & VEHICLE ENGINEERING
2015年
5期
42-46
,共5页
柴油机%进气阀系%运动学%动力学
柴油機%進氣閥繫%運動學%動力學
시유궤%진기벌계%운동학%동역학
diesel%intake valve system%kinematics%dynamics
柴油机的进气阀比排气阀更易磨损，直接影响了柴油机尤其是高速柴油机的可靠性和耐久性。利用EXCITE_TD软件对4102柴油机进气阀系的特性进行仿真、评价及优化。进气阀系运动学仿真结果的评价表明：原进气阀的最大跃度不满足要求，需要进行优化。优化后的最大跃度Jerk由原来的2720 mm/rad3降到了888.2 mm/rad3，对阀系振动的响应不再敏感；进气阀系动力学仿真结果的评价表明：优化前、后，进气阀的落座速度和落座力均小于优化前，尤其是进气阀的落座力，约减小一半，使得阀座的振动、噪声及磨损大大降低。
柴油機的進氣閥比排氣閥更易磨損，直接影響瞭柴油機尤其是高速柴油機的可靠性和耐久性。利用EXCITE_TD軟件對4102柴油機進氣閥繫的特性進行倣真、評價及優化。進氣閥繫運動學倣真結果的評價錶明：原進氣閥的最大躍度不滿足要求，需要進行優化。優化後的最大躍度Jerk由原來的2720 mm/rad3降到瞭888.2 mm/rad3，對閥繫振動的響應不再敏感；進氣閥繫動力學倣真結果的評價錶明：優化前、後，進氣閥的落座速度和落座力均小于優化前，尤其是進氣閥的落座力，約減小一半，使得閥座的振動、譟聲及磨損大大降低。
시유궤적진기벌비배기벌경역마손，직접영향료시유궤우기시고속시유궤적가고성화내구성。이용EXCITE_TD연건대4102시유궤진기벌계적특성진행방진、평개급우화。진기벌계운동학방진결과적평개표명：원진기벌적최대약도불만족요구，수요진행우화。우화후적최대약도Jerk유원래적2720 mm/rad3강도료888.2 mm/rad3，대벌계진동적향응불재민감；진기벌계동역학방진결과적평개표명：우화전、후，진기벌적락좌속도화락좌력균소우우화전，우기시진기벌적락좌력，약감소일반，사득벌좌적진동、조성급마손대대강저。
Intake valve is more likely to be worn than exhaust valve in diesel engine, and this will directly impact on reliability and durability of diesel, especially high-speed diesel. In this paper, simulation, evaluation and optimization of the characteristics for 4102 diesel intake valve system was done using EXCITE_TD software. The results of simulation and evaluation for original intake valve system kinematics indicated that the maximum value of the jerk which could not accord with the requirement needed to be improved. The optimized results that the maximum jerk dropped to 888.2 mm/rad3 from 2 720 mm/rad3 showed intake valve was insensitive to the system. The results of simulation and evaluation for intake valve system dynamics indicated that optimized speed and seat force were less than before, especially seat force reduced by half made the vibration noise and wear of the valve seat greatly reduced.
