1. Research on the influence of injection strategies on the in-cylinder combustion process and emissions of methanol.
- Author
-
Yu, Juan, Zhou, Feng, Fu, Jianqin, Huang, Dan, Wu, Chenghao, and Liu, Jingping
- Subjects
- *
INTERNAL combustion engines , *COMBUSTION efficiency , *CLIMATE change , *ALTERNATIVE fuels , *CARBON emissions , *METHANOL as fuel - Abstract
In the context of the global response to climate change, methanol is receiving widespread attention as a potentially clean, renewable fuel. In this paper, the effects of injection timing and split injection strategy on the combustion process and emissions were investigated in methanol engines. The effect of mixture control on the ignition delay period was studied in detail. The results showed that when the injection timing was advanced to 95 °CA bTDC, the ignition delay period and combustion duration period were reduced by 28.96 % and 6.14 %, respectively. When the injection timing was delayed, the NO X emissions of the methanol engine were significantly reduced by 6.13 %–20.39 %. The use of split injection strategy enables the formation of a reasonably stratified fuel-air mixture in the cylinder. Under the optimized split injection strategy, the combustion duration was shortened by 0.93 %–14.58 %. The ignition delay period of the IT105S2 was shortened by 28.62 % compared with that of the original engine. In addition, the reasonable split injection strategy can effectively reduce the emission of formaldehyde and unburned methanol. This study provides an optimization direction for the application of methanol in the internal combustion engine for high efficiency and clean combustion. [Display omitted] • Split injection strategies and injection timing are studied on methanol engines. • NO X emission decreased by 6.13 %∼20.39 % as the injection timing is delayed. • Split injection facilitates the formation of a reasonably stratified mixture. • Combustion duration was reduced by 0.93 %∼14.58 % with split injection. • The formaldehyde and unburned methanol were reduced with spilt injection. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF