Energy distribution analysis in boosted HCCI-like / LTGC engines ? Understanding the trade-offs to maximize the thermal efficiency [electronic resource]

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 629.8 Automatic control engineering

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the United States Secretary of Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015

Mô tả vật lý: Size: 25 p. : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 266038

A detailed understanding of the various factors affecting the trends in gross-indicated thermal efficiency with changes in key operating parameters has been carried out, applied to a one-liter displacement single-cylinder boosted Low-Temperature Gasoline Combustion (LTGC) engine. This work systematically investigates how the supplied fuel energy splits into the following four energy pathways: gross-indicated thermal efficiency, combustion inefficiency, heat transfer and exhaust losses, and how this split changes with operating conditions. Additional analysis is performed to determine the influence of variations in the ratio of specific heat capacities (?) and the effective expansion ratio, related to the combustion-phasing retard (CA50), on the energy split. Heat transfer and exhaust losses are computed using multiple standard cycle analysis techniques. Furthermore, the various methods are evaluated in order to validate the trends.
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