Laser Diagnostics Technology Research for Measurement Cylinder Temperature Field in Direct-injection Diesel Engine
To measure cylinder temperature field in direct-injected diesel engine laser induced fluorescence (LIF) technology has been demonstrated. This technique introduces a new tool with respect to practical combustors for the analysis of temperature field, turbulent flame front structure, and differences between standard and improved combustors. Schematic of the experimental set-up is outlined and the experimental data on the diesel engine is summarized. Experiments are taken using a common rail injection system able to work at a maximum pressure of 135 Mpa, a swirled type injector with a nozzle diameter of 0.124mm and a nominal cone angle of 150°. The investigation is conducted by applying the 2-D imaging and the LIF techniques in a flow test rig, designed for capturing the tumble motion in a prototype cylinder. The measurement system includes a blower, which supplied the intake flow rate, and a prototype single-valve direct injection diesel engine head modified to lay down the swirled-type injector. The temperature field spatial distributions in the cylinder for different crank angle degrees are carried out in a single direct-injection diesel engine. It gives the theory and method about measuring temperature field exactly in directed-injection diesel engine.
laser diagnostics technology laser induced fluorescence temperature field direct-injection diesel engine crank angle
Liu Yongfeng Zhang Youtong Tian Hongsen Qin Jianjun
School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081 China; School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081 China School of Mechanical - Electronic and Automobile Engineering,Beijing Institute of Civil Engineering School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044 C
国际会议
西安
英文
2007-08-16（万方平台首次上网日期，不代表论文的发表时间）