Transient in-Cylinder Gas Flow Characteristics of Single Cylinder Port Injection Hydrogen Fueled Engine | Science Publications

American Journal of Applied Sciences

Khalaf I. Hamada¹  M. A. Maleque¹  K. Kadirgama¹  M. M. Noor¹  M. M. Rahman¹ 

关键词: Hydrogen fuel;    specific heat ratio;    port injection;    engine speed;    air fuel ratio;    transient;   

DOI  :  10.3844/ajassp.2010.1364.1371

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: The variation of the in-cylinder gas flow characteristics for singlecylinder port injection hydrogen fueled internal combustion engine was investigated through transientstate simulation. Approach: One dimensional gas dynamics was described the flow and heat transferin the components of the engine model. Special attention is paid to selection and correction of heattransfer correlation which describe of in-cylinder heat transfer to coincide with the practicalobservations. The engine model was simulated with variable engine speed and Air Fuel Ratio (AFR).Engine speed varied from 2000-5000 rpm with increment equal to 1000 rpm, while AFR changed fromstoichiometric to lean limit. Results: The acquired results showed that the maximum in-cylindertemperature and pressure obtained of 2753 K and 49.62 bar at 24°CA ATDC and 13°CA ATDC forAFR = 34.33 respectively, while the minimum in-cylinder temperature and pressure obtained of1366 K and 29.14 bar at 18 deg CA of ATDC and 8 deg CA of ATDC for AFR = 171.65 respectively.The obtained results show that AFR has a crucial effect on characteristics variation during the powercycle whilst engine speed has minor effects. Conclusion: These results utilized for study thecombustion process, fuel consumption, emission production and engine performance.

【 授权许可】

Unknown