Comparison of two injection systems in an HSDI diesel engine using split injection and different injector nozzles |
| |
Authors: | J Benajes S Molina R Novella R Amorim H Ben Hadj Hamouda J P Hardy |
| |
Institution: | (1) Toyota Central R&D Labs., Inc., Yokomichi, Nagakute, Aichi, Japan;(2) Tokai University, 1117 Kitakaname Hiratsuka-shi, Kanagawa, Japan; |
| |
Abstract: | The demand for reduced pollutant emissions has motivated various technological advances in passenger car diesel engines. This
paper presents a study comparing two fuel injection systems and analyzing their combustion noise and pollutant emissions.
The abilities of different injection strategies to meet strict regulations were evaluated. The difficult task of maintaining
a constant specific fuel consumption while trying to reduce pollutant emissions was the aim of this study. The engine being
tested was a 0.287-liter single-cylinder engine equipped with a common-rail injection system. A solenoid and a piezoelectric
injector were tested in the engine. The engine was operated under low load conditions using two injection events, high EGR
rates, no swirl, three injection pressures and eight different dwell times. Four injector nozzles with approximately the same
fuel injection rate were tested using the solenoid injection system (10 and 12 orifice configuration) and piezoelectric system
(6 and 12 orifice design). The injection system had a significant influence on pollutant emissions and combustion noise. The
piezoelectric injector presented the best characteristics for future studies since it allows for shorter injection durations
and greater precision, which means smaller fuel mass deliveries with faster responses. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|