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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/8413

Title: Quasi-constant volume (QCV) spark ignition combustion
Authors: Chen, Rui
Winward, Edward
Stewart, Paul
Taylor, Ben
Gladwin, Dan
Keywords: Combustion processes
Engine design
Fuel economy
Fuel injection timing
Ignition timing
Performance
Powertrain design
Product development
Real time control
Research and development
Single cylinder engines
Spark ignition engines
Issue Date: 2009
Publisher: © SAE International
Citation: CHEN, R. ... et al, 2009. Quasi-constant volume (QCV) spark ignition combustion. IN: Proceedings of SAE 2009 World Congress, Detroit, USA, 20th-23rd April.
Series/Report no.: SAE Technical Papers;2009-01-0700
Abstract: The Otto cycle delivers theoretical maximum thermal efficiency. The traditional design of internal combustion engines using a simple slide-crank mechanism gives no time for a constant volume combustion which significantly reduces the cycle efficiency. In this study, using a high torque, high bandwidth, permanent magnet electric drive system attached to the crankshaft, variable angular velocities of the engine crankshaft were implemented. The system enabled reductions in piston velocity around the top dead centre region to a fraction of its value at constant crankshaft angular velocity typical in conventional engines. A quasi-constant volume combustion has thus been successfully achieved, leading to improvements in engine fuel consumption and power output which are discussed in detail.
Description: This is a conference paper [2009 © SAE International]. It was posted on this site with permission from SAE International. Further use and distribution of this paper requires permission from SAE International.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/8413
Publisher Link: http://www.sae.org/congress/2009/
ISSN: 0148-7191
Appears in Collections:Conference Papers and Contributions (Aeronautical and Automotive Engineering)

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