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SOC Detection of Controlled Auto-Ignition Engine
Technical Paper
2007-01-3538
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Controlled Auto-Ignition (CAI) combustion is a new combustion concept. Unlike the conventional internal combustion engine, CAI combustion takes place homogeneously throughout the fuel/air mixture with self ignition, and the mixture is burned without flame propagation. The start of combustion (SOC) is a critical factor in the combustion because SOC affects exhaust gas emissions, engine power, fuel economy and combustion characteristics.
This paper presents a control oriented SOC detection method using a 10 bar of difference pressure, and proposes 50 percent normalized difference pressure for SOC detection parameter. Difference pressure is defined as the difference between the in-cylinder firing pressure and the in-cylinder motoring pressure. These methods were determined by CAI combustion experiments. Managing the difference pressure is a fast and precise method for SOC detection.
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Citation
Choe, D., Lee, M., Lee, K., Sunwoo, M. et al., "SOC Detection of Controlled Auto-Ignition Engine," SAE Technical Paper 2007-01-3538, 2007, https://doi.org/10.4271/2007-01-3538.Also In
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