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Research on Variable Intake System of Motorcycle Engine

Author: HuHuaQiang
Tutor: RenLiHuan
School: Tianjin University
Course: Power Machinery and Engineering
Keywords: Motorcycle Engine Variable intake Simulation software
CLC: U483
Type: Master's thesis
Year: 2008
Downloads: 114
Quote: 2
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Abstract


In order to improve engine performance , further tap the potential ability of the small engine , motorcycle engine to the development of multi-valve direction . But at the same time, the contradiction between the engine power in high-speed large- capacity and low speed small load difference contradictions , fuel economy and emissions performance more prominent , these issues alone can increase or decrease the valve can not be an effective solution to the number . Small and medium-sized engines , however , affected by the impact of prices and market , more on layout small size and other factors , is also different from many of the design of the car engine . Tianjin Internal Combustion Engine Research Institute of Zhejiang Xingyue Group Co., Ltd. newly developed 4 -valve 125ml displacement engine based design to improve part-load under conditions that do not make big changes to the engine , and without reducing the maximum power and maximum torque engine performance. According to this requirement and installation , processing and production of a range of factors to consider , through repeated program of research and comparison , select a continuous variable intake channel cross-sectional area of ??the program . The research topics include : the use of a one-dimensional simulation software BOOST establish numerical simulation model of a 125ml displacement four -valve the improved engine work process , and the establishment of the model was verified ; intake system rehabilitation programs research using only change into the cross-sectional area of the gas pipeline to optimize cost-effective programs ; final validation of performance simulation results and prototype software simulation and bench test , the engine part load characteristics in low speed , power torque in varying degrees to enhance , at the same time to ensure the high-speed performance does not decrease. After a bench test , verify the conclusions of the simulation . The results of the design requirements , and in addition to theoretical analysis , can serve as a model for other similar models developed , has a certain reference value .

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CLC: > Transportation > Road transport > Other road transport > Motorcycles, motorized bicycles
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