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- Title
Effect of a 2-stage injection strategy on the combustion and flame characteristics in a PCCI engine.
- Authors
Kim, Y.; Kim, K.; Lee, K.
- Abstract
Recently, to reduce environmental pollution and the waste of limited energy resources, there is an increasing requirement for higher engine efficiency and lower levels of harmful emissions. A premixed charge compression ignition (PCCI) engine, which uses a 2-stage type injection, has drawn attention because this combustion system can simultaneously reduce the amount of NOx and PM exhausted from diesel engines. It is well known that the fuel injection timing and the spray angle in a PCCI engine affect the mixture formation and the combustion. To acquire two optimal injection timings, the combustion and emission characteristics of the PCCI engine were analyzed with various injection conditions. The flame visualization was performed to validate the result obtained from the engine test. This study reveals that the optimum injection timings are BTDC 60° for the first injection and ATDC 5° for the second injection. In addition, the injection ratio of 3 to 7 showed the best NOx and PM emission results.
- Subjects
POLLUTION prevention; AUTOMOBILE ignition; ENGINES &; the environment; AUTOMOBILE emission control devices; POLLUTION control equipment; EMISSION control
- Publication
International Journal of Automotive Technology, 2011, Vol 12, Issue 5, p639
- ISSN
1229-9138
- Publication type
Article
- DOI
10.1007/s12239-011-0074-0