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[論文] 다회수 스파크 점화기관의 기관성능에 관한 연구
이성열(S.Y.Lee),한병호(B.H.Han) 한국자동차공학회 1988 오토저널 Vol.10 No.4
The ignition quality of ignition system is influenced by spark energy, discharge pattern of spark energy and spark duration.<br/> In this paper, the characteristics of multiple spark ignition system have been investigated for various number of spark and spark interval.<br/> The results, which were compared with those obtained with a standard single spark ignition, show that engine output is increased, and lean misfire limit is extended with the multiple spark ignition system.<br/> The most effective number of spark at the most effective spark interval that are determined by engine performance test, were 6 times spark at 0.20ms spark interval.<br/> For the above condition of spark, engine torque was increased about 20% comparing with conventional ignition system and lean misfire limit was extended to air-fuel ratio 22.5: 1.<br/> This study researched the rate of heat release and quantity of heat release influenced by a condition of spark on the mass burned in order to investigate the relationship between the rate of mass burned and number of spark times.
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[論文] 다회수 스파크 점화기관의 방전효과에 관한 연구
이성열(S.Y.Lee),한병호(B.H.Han) 한국자동차공학회 1989 오토저널 Vol.11 No.5
The effect of discharge have been investigated for condition of spark in a multiple spark ignition engine, as the spark duration, capacitive and inductive discharge energy were calculated for condition of spark by ignition wave and energy formula,<br/> The useful portion of spark discharge is divided into capacitance portion and inductance portion,<br/> It was found that capacitive discharge energy and spark duration were increased according to increasing number of spark, and inductive discharge energy was increased according to increasing spark intervaL , Therefore engine torque was increased and lean misfire limit was extended comparing with the standard isnition system,<br/> It found that spark energy was discharged within ignition delay period availability acted on the formation and growth of flame kernel, and total spark energy was increased according to increasing number of spark times, but discharged spark energy after ignition delay became unavailable energy, And the capacitive discharge energy has the dominant effect for stoichiomeric or not very rich air-fuel mixture but inductive discharge energy has the dominant effect for lean air-fuel mixture.
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대퇴골 전자부 골절 치료후 발생한 고관절 아탈구 - 1례 보고 -
김기용,장재석,이수호,한병호 대한골절학회 1996 대한골절학회지 Vol.9 No.1
It has been emphasized that the choice of treatment for the trochanteric fracture of the femur is open reduction and stable internal fixation to reduce complications by early ambulation. Recently dynamic hip screws(DHS) are very popular to the treatment of trochanteric fracture of the femur but they have some complications. Postoperative complications of the trochanteric fracture of the femur include malunion, delayed union, nonunion, disengagement of lag screw from sideplate, metal failure and the screw cutting -out of the femoral head, but subluxation of the hip has not reported as a complication. We experienced a rare case of trochanteric fracture which was treated with open reduction and internal fixation with DHS and was found to be subluxation of its hip at postoperative 4 weeks, which was managed by cemented bipolar endoprethesis.
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