Diesel Particulate Filter Cleaning Effectiveness: Estimated Ash Loading, Quantified Particulate Removal, and Post-cleaning Filter Pressure Drop

Fox, John T.; Yang, Kun; Hunsicker, Robert

doi:10.1007/s40825-019-00149-8

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…There are ongoing works on the emission limits for the engines of the machines and non-road vehicles [4; 5]. The latest emission restrictions decrease the possibility to correct the combustion process [6][7][8][9][10][11]. A certain solution to this situation is use of fuels with reduced carbon content [12][13][14][15] or systems supporting combustion engines (hybrid drives) [16; 17].…”

Section: Introductionmentioning

confidence: 99%

Determination of low pressure gas injector valve flow factor

Szpica

2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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During the time when exhaust toxicity effects have an important role in the means of transport, engines are very often converted to be supplied by alternative fuel. The most popular alternative fuels used in transport vehicle engines are liquefied petroleum gas and compressed natural gas. In both cases, the fuel dosage component is the low pressure gas injector. There are many design constructions for these injectors, i.e. plunger, plate or membrane. The most popular are plunger injectors. In the course of mathematical modelling of the combustion engine fuel supply system operation, it is necessity, among other things, to determine the flow parameters of components, mainly the values of flow factors. The article presents the results of plunger injector experimental flow tests at various opening levels. For this purpose, the original laboratory stand and flow meter were used. An original method for determining the cross-section flow area for a plunger valve has been proposed. The determined coefficient is universal and it is used in the case of plunger injectors. Tests at varying degrees of opening are static, because the flow is steady and the plunger is stationary. An attempt was made to validate the results of static tests under dynamic conditions. For this purpose, our own research method was used, consisting of emptying the tank with a pressure sensor mounted under dynamic injector operation. The results of measurements are flow pressure graphs. They reflect the cyclical operation of the injector. In the final stage experimental and model waveforms were compared (mean absolute percentage error did not exceed 0.5%). Theoretical values were calculated on the basis of a simplified flow model, taking into account the coefficient and field of free flow from static tests. As a result, the applicability of the parameters obtained from static tests for dynamic applications was assessed.

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Section: Introductionmentioning

confidence: 99%

Determination of low pressure gas injector valve flow factor

Szpica

2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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“…A separate group is constituted by the non-road engines, where also legal regulations are applied [3; 4]. Despite the continuous evolution of the internal combustion engine and the improvement of the combustion process organisation [5][6][7][8][9][10], it is difficult to decrease the toxicity of exhaust emissions. Reduced-carbon fuels [11][12][13][14], or systems to assist the internal combustion engines by creating the hybrid drives [15; 16] can be used.…”

Section: Introductionmentioning

confidence: 99%

Model assessment of inlet timing system impact on cylinder indicated pressure course of piston pneumatic engine

Szpica

Korbut

2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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Continuous tightening of the exhaust gas toxicity standards emitted from transport means results in the necessity of the combustion process modification and search for alternative propulsion sources. There are many design solutions for the pneumatic engines, i.e. piston, rotary or unconventional. The most popular type of the pneumatic engines is piston engines based on the internal combustion engines. In the case of these engines, the main problem is the peak cylinder pressure and the mean indicated pressure, which are responsible for external indicators, such as torque and power, as well as economic air consumption. In a significant part, the piston pneumatic engine is built on the basis of the internal combustion engine, modifying the compression ratio and the camshaft timing to adapt it to compressed air operation. It is also important that the pressure at the end of the compression stroke should not be higher than the compressed air supply pressure. In order to optimize the indicated pressure, the timing system should be adjusted adequately. The article concerns the selection of the operating phase of the pneumatic engine inlet valve, specifically the opening angle with respect to the top dead centre. The mathematical description of the mechanical part is based on a piston machine, while the pneumatic part is based on a lumped element method. The numerical calculations indicated that the appropriate configuration of the inlet valve opening allows to achieve a high level of the mean indicated pressure and consequently a high torque value generated by the engine can be expected. During each analysis, the air consumption was additionally assessed. Appropriate selection of the inlet valve opening allows to eliminate the effect of "wrapping" the pressure, which decreases the external indicators of the engine and increases the load on the piston-connecting rod-crankshaft elements.

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Implications of Hydrated Ash on Filtration Efficiency and Performance of Particulate Filters (DPF, GPF, and SCRF)—a Perspective

Bagi

Kamp

2022

Emiss. Control Sci. Technol.

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Diesel Particulate Filter Cleaning Effectiveness: Estimated Ash Loading, Quantified Particulate Removal, and Post-cleaning Filter Pressure Drop

Cited by 6 publications

References 14 publications

Determination of low pressure gas injector valve flow factor

Determination of low pressure gas injector valve flow factor

Model assessment of inlet timing system impact on cylinder indicated pressure course of piston pneumatic engine

Implications of Hydrated Ash on Filtration Efficiency and Performance of Particulate Filters (DPF, GPF, and SCRF)—a Perspective

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