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Analysis of In-Cylinder RGF and Other Operating Parameters of an Automotive Gasoline Engine under Transient Operations
Technical Paper
2009-01-1815
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A hybrid approach utilizing the measured intake/exhaust port pressure traces and gas dynamics simulation was developed to process the instant fresh charge and RGF (Residual Gas Fraction) trapped in cylinder. The real time RGF, pumping losses and indicated thermal efficiency of an automotive gasoline engine under vehicle driving conditions are analyzed, cycle by cycle, and associated to the engine operating parameters including engine load, speed, VVT positions, manifold pressure and temperatures, as well as spark timing. In this way the inter-relationship among those parameters are established. The derived relationship could be used to determine the in-cylinder process for more accurate prediction of engine performance at the stage of concept simulation study, and applied to narrow the range of parameter tests in the engine calibration stage.
Authors
Citation
Ping, L., Lang, X., Yu, H., Ping, L. et al., "Analysis of In-Cylinder RGF and Other Operating Parameters of an Automotive Gasoline Engine under Transient Operations," SAE Technical Paper 2009-01-1815, 2009, https://doi.org/10.4271/2009-01-1815.Also In
References
- Ford Richard Collings Nick “Measurement of Residual Gas Fraction using a Fast Response NO Sensor” SAE 1999-01-0208 1999
- Alger Terry Wooldridge Steven “Measurement and Analysis of the Residual Gas Fraction in an SI Engine with Variable Cam Timing” SAE 2004-01-1356
- Jang Jinyoung Yeom Kitae Bae Choongsik “Effects of Exhaust Throttling on Engine Performance and Residual Gas in an SI engine” SAE 2004-01-2974
- Liu Jing Ping Schorn Norbert Schernus Christof Peng Lixin “Comparison of Method of Characteristics with Finite Difference Methods on One-Dimensional Gas Flow in IC Engine Manifold” SAE 960078
- Liu Jing Ping Kleeberg Henning Tomazic Dean et al “A Model for On-Line Monitoring of In-Cylinder Residual Gas Fraction (RGF) and Mass Flowrate in Gasoline Engines” SAE 06-01-0656