采用一维仿真方法研究不同节气门开度和进气长度对 SI 发动机容积效率的影响

IF 0.6 Q3 MULTIDISCIPLINARY SCIENCES Pertanika Journal of Science and Technology Pub Date : 2024-07-16 DOI:10.47836/pjst.32.4.03
Mohamad Firzan Ahmad Harazi, A. Hairuddin, A. As’arry, S. Masuri
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引用次数: 0

摘要

发动机性能受容积效率的影响,容积效率是指发动机将空气送入气缸的能力。众所周知,由于空气压力波的特性,进气长度可根据发动机转速进行调整。然而,进入进气系统的气流受节气门开度控制,因此有必要研究根据节气门开度调整的进气长度对性能的影响。因此,本研究重点关注不同节气门开度和进气道长度与发动机转速的关系对 Proton CamPro 1.6L SI 发动机容积效率的影响。模拟运行的发动机转速范围从 1000 rpm 到 7000 rpm,进气长度不同,节气门开度角度也不同。这项研究的重要发现表明,根据节气门开度调整进气道长度可使低转速范围内的容积效率提高 1.3%。在节气门开度为 70°、转速为 1000 rpm 时,进气道长度调整为 400 mm;在节气门开度为 50°、转速为 2000 rpm 时,进气道长度调整为 450 mm。然而,研究表明,90°或大开度节气门可为所有进气长度的中高转速提供最佳容积效率。在进气口长度为 500 毫米、油门大开的情况下,最高效率在 4000 rpm 时达到 101%。这项研究的结果有助于很好地理解根据节气门开度调整进气道长度所带来的发动机性能。
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Effects of Different Throttle Opening and Air Intake Lengths on the Volumetric Efficiency of SI Engine Using 1D Simulation Method
Engine performance is influenced by volumetric efficiency, an engine’s ability to put air into its cylinders. It is known for its intake length being tuned based on engine speed due to the air pressure wave behavior. However, the airflow into the intake system is controlled by the throttle opening, so there is a need to study the performance effect of intake length that is tuned based on it. Thus, this current study focuses on the impact of different throttle opening and intake lengths in relation to engine speed on the volumetric efficiency of the Proton CamPro 1.6L SI engine. The simulation runs on different ranges of engine speeds from 1000 rpm to 7000 rpm and different intake lengths with different throttle opening angles. The critical finding of this study revealed that tuning intake length based on throttle opening showed an improvement of 1.3% for volumetric efficiency at the low rpm range. It is by tuning the intake length to 400 mm at a throttle opening of 70° for 1000 rpm and 450 mm intake length with a throttle opening of 50° at 2000 rpm. However, it showed that 90° or wide-open throttle provides the best volumetric efficiency for mid and high-range rpm for all intake lengths. The highest efficiency achieved is 101% at 4000 rpm with a 500 mm length intake and wide-open throttle. The findings from this study contribute to a good understanding of engine performance through intake length tuned based on throttle opening.
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来源期刊
Pertanika Journal of Science and Technology
Pertanika Journal of Science and Technology MULTIDISCIPLINARY SCIENCES-
CiteScore
1.50
自引率
16.70%
发文量
178
期刊介绍: Pertanika Journal of Science and Technology aims to provide a forum for high quality research related to science and engineering research. Areas relevant to the scope of the journal include: bioinformatics, bioscience, biotechnology and bio-molecular sciences, chemistry, computer science, ecology, engineering, engineering design, environmental control and management, mathematics and statistics, medicine and health sciences, nanotechnology, physics, safety and emergency management, and related fields of study.
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