Investigation on hydrocarbon emissions from crevice and oil layer during cols start and idling periods in SI engine (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Investigation on hydrocarbon emissions from crevice and oil layer during cols start and idling periods in SI engine (PDF)
- 发表刊物：
- J Automob. Eng
- 摘要：
- In order to understand better the process of hydrocarbon formation and the effect of the top-land crevice and the oil layer of the cylinder liner on unburned hydrocarbons during cold start and idling periods, the temperature of the piston top-land and liner was measured. Based on the measured results, the amount of unburned hydrocarbons from the crevice and liner has been predicted. It was found that the temperature of the piston top-land and cylinder liner took about 150-200 s to reach its equilibrium state as the engine started up. The concentration of hydrocarbons from the top-land crevice and from the oil layer will be reduced to 40 and 75 per cent of its initial value respectively. It is considered that a reduction in piston thermal capacity can reduce the total unburned hydrocarbons during this transient period owing to quick minimization of the top-land crevice volume and rapid increase in mixture temperature in the crevice region
- 合写作者：
- Huang ZH, Pang J, Pan KY
- 卷号：
- 212(D5): 501-505
- 页面范围：
- 501-505
- 是否译文：
- 否
- 发表时间：
- 1998-10-06