Effects of lean combustion coupling with intake tumble on economy and emission performance of gasoline engine

Feng Zhou, Jianqin Fu, Wenhui Ke, Jingping Liu, Zhipeng Yuan and Baojun Luo

Energy, 2017, vol. 133, issue C, 366-379

Abstract: To improve the economy and emission performance of automotive gasoline engine, the approach of lean combustion coupling with intake tumble was investigated. A port blocker was designed on intake manifold so as to generate intake tumble, and then the sweeping test of excess air coefficient was conducted under engine common conditions (2000 r/min, 2.6 bar) in two port blocker states (opening and closing). On this basis, the effects of lean combustion coupling with intake tumble on the working process, combustion and emission performance of gasoline engine were studied. The tested results indicate that lean combustion limit is obviously extended with acceptable combustion stability by utilizing intake tumble, thus the potential of energy conservation and emission reduction by lean combustion can be further enhanced. Compared with the initial state of original engine (λ = 1.0, port blocker closing), the indicated thermal efficiency can be increased by 7.2%, and the specific emissions of CO2, CO, HC and NOX can be reduced by 5.8%, 72.2%, 12.0% and 85.3% at most, respectively. In particular, the minimum specific emission of NOX is only 2.0 g/(kW·h). The results demonstrate that lean combustion coupling with intake tumble has great potential of energy conservation and emission reduction for gasoline engine.

Keywords: Internal combustion engine; Lean combustion; Intake tumble; Thermal efficiency; Energy conservation and emission reduction (search for similar items in EconPapers)
Date: 2017
References: Add references at CitEc
Citations: View citations in EconPapers (10)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544217308897
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:133:y:2017:i:c:p:366-379

DOI: 10.1016/j.energy.2017.05.131

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().