Study of the Combustion and Emission Characteristics of a Quasi ICRC Engine Under Different Engine Loads

Yu, Xiao; Wu, Zhijun; Wang, Cheng; Deng, Jun; Hu, Zongjie; Li, Liguang

doi:10.4271/2014-01-1202

Cited by 15 publications

(24 citation statements)

References 15 publications

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“…Besides, more t inj and higher P inj cause the increase of COV IMEP , which means increasing engine cyclic variation and bad combustion stability. The details of emission measurement instruments and data acquisitions are introduced in [8]. NOx exists due to the remaining N 2 of industrial O 2 and CO 2 tank for the experiment.…”

Section: Experimental Apparatus and Proceduresmentioning

confidence: 99%

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Experimental Investigation of Combustion and Emission Characteristics for Internal Combustion Rankine Cycle Engine under Different Water Injection Laws

et al. 2015

Energy Procedia

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This paper discusses a novel oxyfuel combustion method named internal combustion rankine cycle (ICRC) used in reciprocating engines. Water is heated up through heat exchanger by exhaust gas and engine coolant, and then injected into the cylinder during the combustion to control the oxyfuel combustion temperature and reaction rate. Moreover, evaporation of the water mist increases the mass of working fluid so indicated thermal efficiency of the cycle is enhanced. This study investigates combustion and emission characteristics of ICRC engine under different water injection laws. The results show that indicated work and thermal efficiency increases significantly due to water injection process. The properly increase of injection duration and pressure improve IMEP (Indicated mean effective pressure) and thermal efficiency. Engine stability becomes better under lower water injection pressure and less injection duration. Less water injection duration and better injection atomization causes lower HC emissions, while NOx emissions stay under low level.

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Section: Experimental Apparatus and Proceduresmentioning

confidence: 99%

“…Ideal thermal efficiency of the cycle could reach to 56% and even more. The preliminary experiment studies by authors showed that injected water could increase the mass of the working fluid and enhance the indicted work of engine [7][8].…”

Section: Introductionmentioning

confidence: 98%

Experimental Investigation of Combustion and Emission Characteristics for Internal Combustion Rankine Cycle Engine under Different Water Injection Laws

et al. 2015

Energy Procedia

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“…10) [30][31][32]. Their system is equipped with a liquid oxygen tank, which exchanges heat with recycled CO 2 from the heat exchanger.…”

Section: Requirements and Challenges For Future Development Of An Autmentioning

confidence: 99%

“…An APC engine uses hydrogen or methane as fuel, 10 Work principle of the ICRC engine [32]. 1-fuel; 2-ICRC engine; 3-1st water heater; 4-2nd water heater; 5-process heater; 6-H 2 O emission; 7-condenser; 8-water pump; 9-EGR valve; 10-CO 2 compress pump; 11-heat exchanger; 12-liquid CO 2 ; 13-solid CO 2 Fig.…”

Section: Requirements and Challenges For Future Development Of An Autmentioning

confidence: 99%

$$\hbox {CO}_{2}$$ CO 2 Reduction Request and Future High-Efficiency Zero-Emission Argon Power Cycle Engine

Gong

Deng

et al. 2018

Automot. Innov.

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To meet the requirements of strict fuel consumption and emission limits, continuously increasing the thermal efficiency of an internal combustion engine and decreasing its exhaust emissions are the main challenges to its sustainable development within the automotive industry. Considering the competition with other zero-emission powertrain systems, such as vehicle batteries and fuel cells, the development of the internal combustion engine needs to focus on producing higher efficiency and zero emissions to meet the request of CO 2 reduction. This paper introduces two novel concepts for an internal combustion engine featuring high efficiency and zero emissions. Referred to as the argon power cycle engine fueled with either hydrogen or natural gas within an oxygen-argon mixture, its fundamentals and characteristics are expounded. This includes a method necessary to absorb carbon dioxide when natural gas is used as fuel instead of hydrogen.

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“…Emberson et al [20] examined the spray cone angle and spray tip penetration of water-diesel emulsions containing 10% and 20% water (by mass). Differences in the spray cone angle and spray tip penetration demonstrated that the [19] emulsification affected the injection process at a pressure of 50 MPa. Zhang et al [21] studied the spray of water injection under high-temperature conditions using shadowgraphs, and results showed that for non-flash boiling sprays, liquid spray tip penetration had a positive correlation with the density of injection water, ambient density and injection pressure.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vessel and Water Temperatures on Direct Injection in Internal Combustion Rankine Cycle Engines

Kang

Zhang

et al. 2018

Automot. Innov.

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This study focused on the effects of vessel and water temperatures on direct injection in internal combustion Rankine cycle engines through experimental and numerical methods. First, a study was carried out with schlieren photography using a high-speed camera for simultaneous liquid-gas diagnoses. Water was directly injected into a constant-volume vessel that provided stable boundaries. We wrote a MATLAB program to calculate spray tip penetration and cone angle from the images. For the further extension of boundary conditions, a numerical model was established and calibrated in AVL-FIRE for the thorough analysis of injection characteristics. Both experimental and numerical results indicated that injection and vessel temperatures have different effects on spray tip penetration. An increase in injected water temperature leads to shorter spray tip penetration, while the spray tip penetration increases with increasing vessel temperature. However, increased injection and vessel temperatures can both decrease the spray cone angle. Moreover, the simulation results also suggested that heat conduction is a main factor in boosting evaporation under top dead center conditions. When the internal energy of water parcels surges, these parcels evaporate immediately. These results are helpful and crucial for internal combustion engines equipped with direct water injection technology.

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Study of the Combustion and Emission Characteristics of a Quasi ICRC Engine Under Different Engine Loads

Cited by 15 publications

References 15 publications

Experimental Investigation of Combustion and Emission Characteristics for Internal Combustion Rankine Cycle Engine under Different Water Injection Laws

Experimental Investigation of Combustion and Emission Characteristics for Internal Combustion Rankine Cycle Engine under Different Water Injection Laws

$$\hbox {CO}_{2}$$ CO 2 Reduction Request and Future High-Efficiency Zero-Emission Argon Power Cycle Engine

Effects of Vessel and Water Temperatures on Direct Injection in Internal Combustion Rankine Cycle Engines

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