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Enhancement of Intake Generated Swirl to Improve Lean Combustion.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Enhancement of Intake Generated Swirl to Improve Lean Combustion./
作者:	Ives, Mark.
面頁冊數:	1 online resource (137 pages)
附註:	Source: Masters Abstracts International, Volume: 57-02.
標題:	Automotive engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9780355491197

Enhancement of Intake Generated Swirl to Improve Lean Combustion.
Ives, Mark.

Enhancement of Intake Generated Swirl to Improve Lean Combustion. - 1 online resource (137 pages)

Source: Masters Abstracts International, Volume: 57-02.

Thesis (M.A.Sc.)--University of Windsor (Canada), 2017.

Includes bibliographical references

As stricter emission and fuel efficiency regulations continue to be set forth by government regulating bodies, the need to optimize the gasoline engine and control every aspect of combustion has never been greater. Gasoline engines which utilize exhaust gas recirculation (EGR) and lean-burn combustion systems are attractive pathways which have shown potential in reaching these targets. However, due to the suppressed reactivity, the ability to ignite and completely burn the mixture is reduced and can lead to unstable operation. It is well established that increased in-cylinder air motion can improve the mixing and turbulence generation which in turn, increases the probability of ignition and the flame velocity. This work investigates the potential benefit of enhanced swirl motion, which is the rotation of charge about the cylinder axis, under lean engine operating conditions. The ultimate objective is to extend the lean-limit of combustion and increase the thermal efficiency.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355491197Subjects--Topical Terms:

1104081
Automotive engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Enhancement of Intake Generated Swirl to Improve Lean Combustion.
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245 1 0 $a Enhancement of Intake Generated Swirl to Improve Lean Combustion.
264 0 $c 2017
300 $a 1 online resource (137 pages)
336 $a text $b txt $2 rdacontent
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500 $a Source: Masters Abstracts International, Volume: 57-02.
500 $a Advisers: Ming Zheng; Graham T. Reader.
502 $a Thesis (M.A.Sc.)--University of Windsor (Canada), 2017.
504 $a Includes bibliographical references
520 $a As stricter emission and fuel efficiency regulations continue to be set forth by government regulating bodies, the need to optimize the gasoline engine and control every aspect of combustion has never been greater. Gasoline engines which utilize exhaust gas recirculation (EGR) and lean-burn combustion systems are attractive pathways which have shown potential in reaching these targets. However, due to the suppressed reactivity, the ability to ignite and completely burn the mixture is reduced and can lead to unstable operation. It is well established that increased in-cylinder air motion can improve the mixing and turbulence generation which in turn, increases the probability of ignition and the flame velocity. This work investigates the potential benefit of enhanced swirl motion, which is the rotation of charge about the cylinder axis, under lean engine operating conditions. The ultimate objective is to extend the lean-limit of combustion and increase the thermal efficiency.
520 $a Steady flow tests were conducted on a cylinder head from a single-cylinder research engine using an in-house developed flow bench system. Swirl speeds were measured using a vane-type swirl meter. Computational fluid dynamics (CFD) simulations were conducted to investigate different intake geometries to enhance the swirl motion. The intake runner geometry which produced an increase in the swirl speed was tested on the flow bench. The steady-flow results showed an increase in the swirl ratio over the baseline measurements. Finally, engine tests were conducted to investigate the effect of the enhanced swirl. The engine test results demonstrated that the lean limits were extended and the thermal efficiency was increased with the enhanced swirl.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Automotive engineering. $3 1104081
650 4 $a Mechanical engineering. $3 557493
650 4 $a Fluid mechanics. $3 555551
655 7 $a Electronic books. $2 local $3 554714
690 $a 0540
690 $a 0548
690 $a 0204
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Windsor (Canada). $b MECHANICAL ENGINEERING. $3 845409
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10639402 $z click for full text (PQDT)