Visualization and Measurements of Sub-Millisecond Transient Spray Dynamics Applicable to Direct Injection Gasoline Engine : Part 1:Visualization of Spray Using High Speed Video Camera and Laser Sheet Technique
スポンサーリンク
概要
- 論文の詳細を見る
Transient temporal and spatial spray characteristics have been investigated. A kind of practical fuel injector with swirl nozzle was examined under variable injection duration within the range of 0.25 to 4.0 ms and injection pressure 5.0 and 7.0 MPa. The fuel spray was injected at a cycling frequency of 50 Hz in a room under normal atmospheric condition. Considered details of sub-millisecond transient dynamics were observed by using a high-speed video camera with temporal resolution of 24.69 μs(40500 frames / s). The results indicate that investigated spray consists of two incorporated flow fractions that are a core jet and a quasi-umbrella droplets spray simultaneously moving down and swirling in local cross-axis domains. Instantaneous transient values of axial and radial penetration were accurately evaluated and analyzed. It was observed that after actual injection a post-injection of fuel droplets occurs and the time-delay and lifetime of these droplets were systematically estimated.
- 一般社団法人日本機械学会の論文
- 1998-11-15
著者
-
OBOKATA Tomio
Department of Mechanical System Engineering, Gunma University
-
Ismailov M
Gunma Univ. Kiryu‐shi Jpn
-
Ismailov Murad
Department Of Mechanical System Engineering Gunma University
-
Kawachi Katsuyoshi
Unisia Jecs Co.
-
ISHIMA Tsuneaki
Department of Mechanical Engineering, Gunma University
-
KOBAYASHI Kazumitsu
Unisia Jecs Co.
-
TSUKAGOSHI Masayoshi
Unisia Jecs Co.
-
TAKEDA Chikashi
Department of Mechanical System Engineering, Gunma University
-
Takeda Chikashi
Department Of Mechanical System Engineering Gunma University
-
Obokata Tomio
Department Of Mechanical System Engineering Gunma University
関連論文
- LDA Flow Rate Measurements Applied for Analysis of Transient Injection Characteristics
- ハイパボロイド攪拌槽の乱流フローパターン
- A Basic Behavior of CNG DI Combustion in a Spark-Ignited Rapid Compression Machine
- (3-03) Feasibility of CNG DI Stratified Combustion Using a Spark-Ignited Rapid Compression Machine((AF-1)Alternative Fuels 1-Gas Engines)
- Time Dividing Analysis on Intermittent Fuel Spray
- Operation of a Two-Stroke S. I. Engine with Scavenging-Port Injection of CNG(CNG and Alternative Fuels, CNG Engines)
- Visualization and Measurements of Sub-Millisecond Transient Spray Dynamics Applicable to Direct Injection Gasoline Engine : Part3:Measurements of Instantaneous and Integrated Flow Rates in High Pressure Injection System Using LDA-Based Meter
- Visualization and Measurements of Sub-Millisecond Transient Spray Dynamics Applicable to Direct Injection Gasoline Engine : Part 2:PDA Measurements and Analysis of Instantaneous Spray Patterns
- Visualization and Measurements of Sub-Millisecond Transient Spray Dynamics Applicable to Direct Injection Gasoline Engine : Part 1:Visualization of Spray Using High Speed Video Camera and Laser Sheet Technique
- (3-12) Relationship between Fuel Injection Rate and Spray Characteristics of the Swirl Nozzle for Gasoline Engine((FS-1)Fuel Sprays 1-Gasoline sprays)
- Measurement of Axial Flow Velocity in Cylinder of Reciprocating Engine by Single Incidence-Beam Reference-Mode LDA
- MD2-2: Gas Flow Evaluation in the Cylinder of a 4-stroke Motored Engine by Means of LDA(MD: Measurement and Diagnostics,General Session Papers)