A review of studies using hydrocarbon adsorption material for reducing hydrocarbon emissions from cold start of gasoline engine

Han, Dandan; Jiaqiang, E; Deng, Yuewen; Chen, Jingwei; Leng, Erwei; Liao, Gaoliang; Xin, Zhao; Feng, Changling; Zhou, Feng

doi:10.1016/j.rser.2020.110079

Cited by 110 publications

(31 citation statements)

References 295 publications

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“…Today the environmental pollution [43][44][45][46][47][48][49][50][51] and energy crisis [52][53][54][55][56][57][58] have to learn another new problem. The thermodynamic process of the diesel engine is a complicated process inside the cylinder.…”

Section: Discussionmentioning

confidence: 99%

Effects of Swirl and Boiling Heat Transfer on the Performance Enhancement and Emission Reduction for a Medium Diesel Engine Fueled with Biodiesel

Tan

Chen

et al. 2021

Processes

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In order to improve the accuracy of numerical simulation, a new heat transfer model is developed by using a modular approach in the Anstalt für Verbrennungskraftmaschinen (AVL)-Boost software. The improved heat transfer model mainly considers the effects of the swirl and boiling heat transfer inside the engine. In addition, a chemical kinetics mechanism including 475 reactions and 134 species is employed to predict the combustion of diesel engines fueled with biodiesel. The result shows that the boiling heat transfer will occur, especially in the high-temperature area. Analysis shows that the improved model is reliable and its precision is increased. Finally, the perturbation method is employed to investigate the relatively important inputs as the complex nonlinear function with a lot of output data and input data produced by the improved model. The relative effects of different parameters such as EGR, injection mass, injection timing, compression ratio, inlet air pressure, fuel injection pressure, exhaust pressure and inlet air temperature on performance and emission characteristics are compared. The eight parameters are investigated on four outputs of brake power, Brake Specific Fuel Consumption (BSFC), NOx and HC. The injected fuel mass plays an important role in emissions and performance. The EGR, compression ratio and inlet air pressure have a great effect on the HC and NOx emission.

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Section: Discussionmentioning

confidence: 99%

Effects of Swirl and Boiling Heat Transfer on the Performance Enhancement and Emission Reduction for a Medium Diesel Engine Fueled with Biodiesel

Tan

Chen

et al. 2021

Processes

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show abstract

“…With the development in the energy crisis [34][35][36][37][38] and environmental problems [39][40][41][42][43][44][45][46][47], the effective control of energy saving and the reduction of emissions in engines are primary areas of focus for scholars. In this study, based on bench test, a simulation for an HCCI engine fueled with natural gas and hydrogen is carried out, and the effect of changing valve timing to form negative valve overlap on in-cylinder combustion process and emission characteristics is investigated.…”

Section: Discussionmentioning

confidence: 99%

Effect of Negative Valve Overlap on Combustion and Emissions of CNG-Fueled HCCI Engine with Hydrogen Addition

Zhang

Liu

et al. 2021

International Journal of Aerospace Engineering

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In order to study the effect of negative valve overlap on combustion and emission characteristics of a homogeneous charge compression ignition engine fueled with natural gas and hydrogen, the test and the simulation were conducted using an engine cycle model coupling the chemical kinetic reaction mechanism under different valve timing conditions. Results show that the internal EGR formed by using negative valve overlap could heat the inlet mixtures and improve the spontaneous ignition characteristic of the engine. The residual exhaust gas could slow down the heat release rate, decrease the pressure rise rate and the maximum combustion temperature, and reduce the NOx emission simultaneously. Among the three NVO schemes, the strategy of changing the intake valve opening timing individually can create the least power loss, and the symmetric NVO strategy which changes both the exhaust valve closing timing and the intake valve opening timing simultaneously can achieve the best heating effect of inlet mixtures and the satisfactory decrease of combustion temperature, as well as the largest reduction of NOx emission.

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“…Energy crisis [37][38][39][40] promotes the more stringent emission regulations enacted by governments around the world, which means that it is very urgent to develop new combustion [41][42][43] and emission reduction technology [44][45][46][47][48][49][50] for minimizing engine emissions [51][52][53][54]. In the paper, a mathematical model of gas-particle flow characteristics is established and employed to investigate the characteristics of gas-particle flow.…”

Section: Discussionmentioning

confidence: 99%

Investigation on Gas-Soot Flow Distribution Characteristic of Soot Capture Process in the Wall-Flow Diesel Particulate Filter

Tan

2021

International Journal of Aerospace Engineering

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In order to investigate the distribution characteristics of gas-particle two-phase flow in the diesel particulate filter in the capture process, a mathematical model of gas-particle two-phase flow for inside-and-outside filter had been established in the capture process according to the mass conservation equation, momentum conservation equation, and k-ε turbulence equation. The model verification was carried out with the experimental and simulated of flow distribution characteristics of gas-particle two-phase. The obtained results showed that the static pressure gradient along the radial distribution was greater at the inlet of the filter in capture process in the diesel particulate filter, which could easily lead to causing eventual fatigue damage due to stress concentration in the front-end of filter; moreover, the weaker the vortex strength of gas-particle formed in expansion pipe was, the better uniformity of flow velocity and soot concentration distribution were. Therefore, the established mathematical model can be used for predicting gas-particle flow velocity distribution in the diesel particulate filter.

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A review of studies using hydrocarbon adsorption material for reducing hydrocarbon emissions from cold start of gasoline engine

Cited by 110 publications

References 295 publications

Effects of Swirl and Boiling Heat Transfer on the Performance Enhancement and Emission Reduction for a Medium Diesel Engine Fueled with Biodiesel

Effects of Swirl and Boiling Heat Transfer on the Performance Enhancement and Emission Reduction for a Medium Diesel Engine Fueled with Biodiesel

Effect of Negative Valve Overlap on Combustion and Emissions of CNG-Fueled HCCI Engine with Hydrogen Addition

Investigation on Gas-Soot Flow Distribution Characteristic of Soot Capture Process in the Wall-Flow Diesel Particulate Filter

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