Energies 2013, 6(6), 2874-2891; doi:10.3390/en6062874
Article

Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine

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Received: 21 September 2012; in revised form: 28 November 2012 / Accepted: 25 December 2012 / Published: 14 June 2013
(This article belongs to the Special Issue Combined Heat and Power – Strategy and Practice)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Reducing fuel consumption is a prime objective in the automotive industry in order to meet regulatory and customer demands. Variable valve actuation offers many opportunities for improving the spark ignition engine’s performance in areas such as fuel economy and pollutant emissions. Our studies revealed that the ability to control maximum intake valve lift does indeed offer the ability to control intake air mass, but also has the added benefit that it improves the fuel-air mixing process thanks to an increased turbulence, caused by the increased intake flow velocity. This is particularly important at idle and low part loads when low maximum lifts are to be used for improving the fuel economy or for achieving the required power. The paper focuses on the experimental results obtained when approaching idle operation with different intake valve laws. Results indicating the potential of using low intake valve lift for fuel economy and cyclic dispersion improvement are presented in this paper.
Keywords: fuel economy; cyclic dispersion; idle operation; intake valve lift/law
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MDPI and ACS Style

Clenci, A.; Bîzîiac, A.; Podevin, P.; Descombes, G.; Deligant, M.; Niculescu, R. Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine. Energies 2013, 6, 2874-2891.

AMA Style

Clenci A, Bîzîiac A, Podevin P, Descombes G, Deligant M, Niculescu R. Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine. Energies. 2013; 6(6):2874-2891.

Chicago/Turabian Style

Clenci, Adrian; Bîzîiac, Adrian; Podevin, Pierre; Descombes, Georges; Deligant, Michael; Niculescu, Rodica. 2013. "Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine." Energies 6, no. 6: 2874-2891.

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