Ignition of an automobile engine by high-peak power Nd:YAG/Cr4+:YAG laser-spark devices

被引：40
|
作者：
Pavel, Nicolaie [1 ]
Dascalu, Traian [1 ]
Salamu, Gabriela [1 ]
Dinca, Mihai [2 ]
Boicea, Niculae [3 ]
Birtas, Adrian [3 ]
机构：
[1] Natl Inst Laser Plasma & Radiat Phys, Lab Solid State Quantum Elect, Bucharest 077125, Romania
[2] Univ Bucharest, Fac Phys, Bucharest 077125, Romania
[3] Renault Technol Roumanie, North Gate Business Ctr, Voluntari 077190, Ilfov District, Romania
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 26期
关键词：
NDYAG LASER; COMBUSTION CHARACTERISTICS; MULTIPLE-BEAM; PULSE-BURST; ENERGY; AIR; COMPOSITE; MIXTURES;
D O I：
10.1364/OE.23.033028
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Laser sparks that were built with high-peak power passively Q-switched Nd:YAG/Cr4+:YAG lasers have been used to operate a Renault automobile engine. The design of such a laser spark igniter is discussed. The Nd:YAG/Cr4+:YAG laser delivered pulses with energy of 4 mJ and 0.8-ns duration, corresponding to pulse peak power of 5 MW. The coefficients of variability of maximum pressure (COVPmax) and of indicated mean effective pressure (COVIMEP) and specific emissions like hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) and carbon dioxide (CO2) were measured at various engine speeds and high loads. Improved engine stability in terms of COVPmax and COVPmax and decreased emissions of CO and HC were obtained for the engine that was run by laser sparks in comparison with classical ignition by electrical spark plugs. (C)2015 Optical Society of America
引用
收藏
页码：33028 / 33037
页数：10
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