The present work studied fuel consumption through experiments on a diesel engine. In order to obtain lower BSFC （brake specific fuel consumption）, DME （dimethyl ether） is heated and introduced into air intake, tog...The present work studied fuel consumption through experiments on a diesel engine. In order to obtain lower BSFC （brake specific fuel consumption）, DME （dimethyl ether） is heated and introduced into air intake, together with fueling emulsified fuel to diesel engine. Results show that BSFC can decrease about 10% and diesel fuel consumption alone can decrease 18%. High saving rate of BSFC up to 10% is also acquired using ethanol instead of DME. To achieve high saving rate of BSFC, the heating temperature of about 1000 K is needed for DME operation, while the diesel engine exhaust temperature of about 750 K is suitable for ethanol. Hydrogen produced in DME or ethanol pyrolysis and the combustion characters of emulsified fuel are considered as main reasons for the excellent fuel saving. Besides, the technique adopted in the present work is extremely easy to be utilized, and may be firstly adopted on diesel engines for power plants, trains, and ships etc.展开更多
This work deals with the examination of farm tractor with diesel engine from the viewpoint of power and gas emissions, using as fuel diesel-ethanol mixtures. A series of laboratory instruments was used for the realiza...This work deals with the examination of farm tractor with diesel engine from the viewpoint of power and gas emissions, using as fuel diesel-ethanol mixtures. A series of laboratory instruments was used for the realization of the experiments. The tractor engine is functioning under full load conditions. The experimental results have shown small reduction of power engine with simultaneously remarkable reduction of CO and HC emissions.展开更多
The performance and emission characteristics of a PPCCI engine fuelled with ethanol and diesel blends were car- ded out on a single cylinder air cooled CI engine. In order to achieve the optimal process response with ...The performance and emission characteristics of a PPCCI engine fuelled with ethanol and diesel blends were car- ded out on a single cylinder air cooled CI engine. In order to achieve the optimal process response with a limited number of experimental cycles, multi objective grey relational analysis had been applied for solving a multiple response optimization problem. Using grey relational grade and signal-to-noise ratio as a performance index, a combination of input parameters was prefigured so as to achieve optimum response characteristics. It was observed that 20% premixed ratio of blend was most suitable for use in a PPCCI engine without significantly affecting the engine performance and emissions characteristics.展开更多
文摘The present work studied fuel consumption through experiments on a diesel engine. In order to obtain lower BSFC （brake specific fuel consumption）, DME （dimethyl ether） is heated and introduced into air intake, together with fueling emulsified fuel to diesel engine. Results show that BSFC can decrease about 10% and diesel fuel consumption alone can decrease 18%. High saving rate of BSFC up to 10% is also acquired using ethanol instead of DME. To achieve high saving rate of BSFC, the heating temperature of about 1000 K is needed for DME operation, while the diesel engine exhaust temperature of about 750 K is suitable for ethanol. Hydrogen produced in DME or ethanol pyrolysis and the combustion characters of emulsified fuel are considered as main reasons for the excellent fuel saving. Besides, the technique adopted in the present work is extremely easy to be utilized, and may be firstly adopted on diesel engines for power plants, trains, and ships etc.
文摘This work deals with the examination of farm tractor with diesel engine from the viewpoint of power and gas emissions, using as fuel diesel-ethanol mixtures. A series of laboratory instruments was used for the realization of the experiments. The tractor engine is functioning under full load conditions. The experimental results have shown small reduction of power engine with simultaneously remarkable reduction of CO and HC emissions.
文摘The performance and emission characteristics of a PPCCI engine fuelled with ethanol and diesel blends were car- ded out on a single cylinder air cooled CI engine. In order to achieve the optimal process response with a limited number of experimental cycles, multi objective grey relational analysis had been applied for solving a multiple response optimization problem. Using grey relational grade and signal-to-noise ratio as a performance index, a combination of input parameters was prefigured so as to achieve optimum response characteristics. It was observed that 20% premixed ratio of blend was most suitable for use in a PPCCI engine without significantly affecting the engine performance and emissions characteristics.
