التفاصيل البيبلوغرافية
| العنوان: |
The Modular Engine Concept: a Cost Effective Way to Reduce Pollutant Emissions and Fuel Consumption |
| المؤلفون: |
MATTARELLI, Enrico, TOSETTI F. |
| المساهمون: |
Mattarelli, Enrico, Tosetti, F. |
| بيانات النشر: |
Society of Automotive Engineers. |
| سنة النشر: |
2008 |
| المجموعة: |
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
| مصطلحات موضوعية: |
Internal Combustion Engine, pollutant emission, driving cycle, thermo-fluid-dynamic simulation, cylinder deactivation |
| الوصف: |
A promising technique to enhance fuel efficiency of large capacity S.I. engines is the de-activation of some cylinders at partial load, through the cut-out of fuel metering and a specific control of the airflow. Thanks to the ensuing reduction of throttling losses (the active cylinders operate at a much higher load), fuel consumption can be reduced, without any negative perception from the driver. Such a technique has been already applied successfully on some production engines, at the cost of some additional complication on the valve-train system.The application analyzed in this study is a little bit different, being aimed to reduce both fuel consumption and emissions, with a minimum impact on engine design. Larger fuel savings may be obtained by coupling the cylinder de-activation with VVT.However, the most important advantage of the modular engine concept proposed in this paper is in terms of emissions: this study demonstrates that the light-off time of the catalysts may be strongly reduced, and a further improvement is obtained by doubling the effective surface of the catalytic bed.The study has been carried out on a conventional SI 4.2L V8 engine. The first step of the analysis has been the experimental validation of a 1D-CFD model of the engine, achieved with a very good accuracy at both full and partial load. Then, the engine has been simulated on a grid of 15 operating points, representing the usage in the New European Driving cycle. The following configurations have been analyzed and compared to the base engine: 4 active cylinders, 3 active cylinders; 4 active cylinders and optimization of valve timings; 3 active cylinders and optimization of valve timings. |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
ELETTRONICO |
| اللغة: |
English |
| Relation: |
volume:108; firstpage:n.d.; lastpage:n.d.; journal:SAE TRANSACTIONS- JOURNAL OF ENGINES; http://hdl.handle.net/11380/608811 |
| الاتاحة: |
http://hdl.handle.net/11380/608811 |
| Rights: |
info:eu-repo/semantics/closedAccess |
| رقم الانضمام: |
edsbas.EC5BB760 |
| قاعدة البيانات: |
BASE |