Idle characteristics of a hydrogen fueled SI engine

✍ Scribed by Fanhua Ma; Yituan He; Jiao Deng; Long Jiang; Nashay Naeve; Mingyue Wang; Renzhe Chen

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 655 KB
• Volume: 36
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2010.12.121

✦ Synopsis

This paper investigates the effect of the equivalence ratio F and ignition advance angle q i on idle characteristics of a turbocharged hydrogen fueled SI engine. The experimental data was conducted under various operating conditions including different F and q i . It is found that, the ignition advance angle at MBT point decreases gradually with the equivalence ratio increasing from 0.4 to 0.9. Indicated thermal efficiency decreases as F increases.

Emissions of NOx increase as F increases. When F is kept constant, the stated emissions increase as q i increases. During idle conditions of a hydrogen fueled engine, a lean mixture with an F less than 0.4 is suitable, and the q i should be increased appropriately. The maximum cylinder pressure rises with an increase of F and q i . The trend of the maximum rate of pressure rise is similar at different F. Only under the conditions of F ¼ 0.4 and q i < 10 CA, the maximum pressure rise rate remains almost unchanged.