Influence of Innovative Diesel-Ethanol Blend on Combustion, Emission and Fuel-Carrying Components

Puschmann, Heike; Diezemann, Matthias; Mueller, Sven C.

doi:10.4271/2013-01-2696

Cited by 3 publications

(1 citation statement)

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“…To reduce NO x emissions, while that of modern engines shifts further away 10°CA ATDC, especially for low temperature HCCI and PCCI modes (Kalghatgi et al, 2011;Stölting et al, 2008;Zheng et al, 2015;Jung and Iida, 2015). As an example, the COHR of a modern diesel engine tending to meet EURO Ⅴ emission level is manipulated at 14°CA-16°CA after TDC to achieve more premixed combustion (Puschmann et al, 2013). A c c e p t e d M a n u s c r i p t 5 It seems more prominent that the alternative fuels such as methanol, ethanol, dimethyl ether (DME) and dimethyl carbonate (DMC) partially share the roles of petroleum resources.…”

Section: Introductionmentioning

confidence: 99%

Combustion features under different center of heat release of a diesel engine using dimethyl carbonate/diesel blend

Mei

Shan

Zhao

et al. 2016

International Journal of Green Energy

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Experiments were performed in a single cylinder common-rail diesel engine which adopts a low temperature PCCI mode. Combustion features of DMC-diesel blends under various COHRs were revealed in details. With retarding of COHR, all the peaks of pressure and pressure rise rate and bulk gas temperature are postponed and declined in sequence. Normally, the crank angle of peak pressure is quite close to the COHR, while the peak of bulk gas temperature appears about 7 o CA after COHR as a rule. The prolongation can be demonstrated at every stage of combustion such as q 10 and q 90 with the COHR being put backward. In addition, the heat release of diesel is completely slower than that of D10 fuel at various stages. Unfortunately, retarding of COHR implies a declining thermal efficiency of engines as well as a higher cyclic variation in general. Nevertheless, D10 blend has higher thermal efficiency than diesel thanks to A c c e p t e d M a n u s c r i p t 2 high oxygen content of DMC and low boiling point which prompts better fuel atomization and complete combustion. Meanwhile, the cyclical variation of D10 is greater than diesel fuel owing to the low heat value, high latent heat of vaporization and poor flammability and of DMC. As a total, a comprehensive understanding of PCCI combustion features under different COHRs can be conducive to conducting effective management of combustion process and manipulating the subsequent emission performance to a favorable level.

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