@article{oai:jaxa.repo.nii.ac.jp:00032359,
 author = {梶, 昭次郎 and 八田, 桂三 and KAJI, Shojiro and HATTA, Keizo},
 issue = {4},
 journal = {東京大学宇宙航空研究所報告},
 month = {Oct},
 note = {クランク室圧縮式2サイクルガソリン機関の吸気管,クランク室,掃気通路,燃焼室,排気管全部を一つの管系としてその非定常流れを解析する方法を与え,それに基いて数値解析を行なった.これは機関の作動サイクルシミュレーションの一環で主として掃気過程の解析であるが,これと化学反応を伴う燃焼過程のシミュレーションとを組み合わせることにより,機関の全作動サイクルのシミュレーションを行なうことが可能である.モータ駆動時の機関の作動は本解析だけでシミュレーションを行なうことができる.計算例として,機関回転数,吸,排気管長さ,排気孔開孔始の燃焼室圧力などを変えて,機関各部の圧力,流速,温度などの時間的変化および給気比,給気効率,掃気効率,燃焼室内新気量などの各パラメータに対する依存性を検討した,その結果,排気管や吸気管の脈動が複雑にエンジン全体の流れに影響を及ぼしていることが確認された., An analytical method for solving unsteady flow in the pipe system of a crankcase compression two-cycle gasoline engine was presented, and numerical calculations based on it were carried out. The intake pipe, crankcase, scavenging passage, combustion chamber and the exhaust pipe are all included in the system. This analysis aims at the simulation of scavenging processes and could be combined with that of combustion processes to yield the whole engine simulation. The simulation of an engine at motor driven can be obtained by this analysis only. The computer calculations were performed to give timewise variations of the pressure, velocity and temperature of the system for various parameters such as engine speed, intake and exhaust pipe length and the initial pressure of the combustion chamber. The variations of the delivery ratio, the trapping efficiency and the scavenging efficiency depending on these parameters were also examined. As a result it was confirmed that the resonant pulsation in the exhaust pipe or the intake pipe has very much influence upon the flow of the whole system of an engine., 資料番号: SA0125565000},
 pages = {1003--1025},
 title = {2サイクル機関吸排気管系の非定常流れ},
 volume = {8},
 year = {1972}
}