Influence of the Length of a Catalyst-Coated Glow Plug on Exhaust Emissions

Merkisz, Jerzy; Pielecha, Jacek; Andrych-Zalewska, Monika

doi:10.3390/en13246557

Cited by 3 publications

(4 citation statements)

References 17 publications

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“…With the help of glow plugs, HC, CO, and NO X emissions were significantly reduced, and PM was just slightly increased. Merkisz et al [54] studied how intake heating affects diesel engine performance under cold start conditions by employing different lengths of glow plugs, as shown in Figure 5. It was found that HC and CO emissions will be significantly reduced after using glow plugs.…”

Section: Intake Heatingmentioning

confidence: 99%

“…The intake temperature of the diesel engine could be increased by installing an intake heater between the intake manifold and the turbocharger. The experimental results showed that the cold start Merkisz et al [54] studied how intake heating affects diesel engine performance under cold start conditions by employing different lengths of glow plugs, as shown in Figure 5. It was found that HC and CO emissions will be significantly reduced after using glow plugs.…”

Section: Intake Heatingmentioning

confidence: 99%

“…Moreover, compared with the standard preheating plug, increasing the length of the preheating part by 4mm can reduce the amount of CO, HC, NO X , and particulate matter emitted by 12.9%, 9.3%, 14.3%, and 9.8%, respectively, because with the increase in the glow plug length, the intake heating effect is further enhanced. Merkisz et al [54] studied how intake heating affects diesel engine performance under cold start conditions by employing different lengths of glow plugs, as shown in Figure 5. It was found that HC and CO emissions will be significantly reduced after using glow plugs.…”

Section: Intake Heatingmentioning

confidence: 99%

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Strategies to Reduce Emissions from Diesel Engines under Cold Start Conditions: A Review

Zhang

Huang

et al. 2023

Energies

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Reducing diesel engine emissions under cold start conditions has become much more valuable as environmental issues become more important. Regarding diesel engine emissions under cold start conditions, this review summarizes the emission mechanisms and specifically focuses on the research progress of four reduction strategies: biodiesel utilization, intake heating, injection optimization, and aftertreatment technologies. In general, adding biodiesel and Di-Ethyl-Ether (DEE) could provide the benefit of reducing emissions and maintaining engine performance. Intake heating and appropriate injection strategies could also effectively reduce emissions under cold start conditions. Unlike normal operating conditions, lean nitrogen oxide traps (LNT) or electrically heated catalysts (EHC) should be utilized in the aftertreatment of diesel engines to minimize emissions under cold start conditions. By offering the valuable information above, this review could be a helpful reference in reduction strategies for diesel engines under cold start conditions in both academia and industry.

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Section: Intake Heatingmentioning

confidence: 99%

Section: Intake Heatingmentioning

confidence: 99%

Section: Intake Heatingmentioning

confidence: 99%

See 1 more Smart Citation

Strategies to Reduce Emissions from Diesel Engines under Cold Start Conditions: A Review

Zhang

Huang

et al. 2023

Energies

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“…Merkisz et al [58] suggested that the catalyst-covered glow plugs of various lengths of the heating part can be applied in hybrid powertrains where sequential engine activation is used.…”

Section: Introductionmentioning

confidence: 99%

Problems with glow plug – a review

Woźniak¹,

Ozuna²,

Siczek³

2021

Combustion Engines

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Despite the development of hybrid and electric vehicles, a many-million population of cars with combustion engines, and particularly CI engines occurs on the roads. Also, many stationary CI engines are still utilized. Despite their improved technologies and characteristics the modern CI engines negatively affect an environment due to cold starting problems. Below 0 °C, engine starts are problematic due to the decreased battery performance and the spray characteristics, the increased ignition delay time, and the engine oil viscosity. Therefore, various glow plugs are applied to facilitate this process. Types, features, and applications of glow plugs in various engines have been discussed in the paper. One case of failure of glow plug has been presented in the article, including the cause of it.

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Influence of the In-Cylinder Catalyst on the Aftertreatment Efficiency of a Diesel Engine

et al. 2023

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The article discusses the use of a catalyst inside the cylinder, the task of which is to reduce exhaust emissions from a diesel engine. The catalyst (platinum) applied to the glow plugs provided an additional method of exhaust aftertreatment. Due to their usage, especially in urban driving, passenger cars are characterized by small mileage between individual trips, so they often operate from a cold engine start and work at a low engine temperature, which leads to reduced catalytic reactor efficiency. For this reason, the efficiency of the internal catalyst was tested in relation to the efficiency of the external reactor. This efficiency was determined based on exhaust emission measurements (before and after the catalytic reactor) in two stages: stage 1: idling of a hot engine, and stage 2: simulation of the NEDC test (valid for the selected test object). The tests were carried out on an engine dynamometer, where the traffic conditions from the type-approval test carried out on a chassis dynamometer could be replicated. The tests were carried out on a Euro 4 1.3 JTD MultiJet diesel engine. The results (measurement of carbon monoxide, hydrocarbons, and the number of particles) related to the assessment of the effect the catalyst in the cylinder were discussed. The obtained catalytic reactor efficiency results, regardless of the type of research, indicated that it achieved the highest efficiency in reducing the concentration of hydrocarbons, and the lowest—in relation to the number of solid particles (as that is not its primary function). It is particularly significant that the in-cylinder catalytic converter was most efficient during the cold engine start, which happens frequently in urban driving. The efficiency of the diesel oxidation catalytic reactor (DOC) during the engine start-up and warm-up phases with the use of standard glow plugs reached values of 31.3%, 34.1% and 14.3%, respectively, for carbon monoxide, hydrocarbons and the particle number. On the other hand, the determined efficiency of the DOC in a setup with the modified glow plugs was 28.9%, 35.7% and 12.5%, respectively. The proposed solution can be used to improve the combustion quality in internal combustion engines used in hybrid vehicles, which are characterized by frequent engine starts and stops. In addition, it is possible to use such a solution retroactively in traditional vehicles powered by an internal combustion engine, which could result in an improvement in their emission class through what is called retrofitting.

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Influence of the Length of a Catalyst-Coated Glow Plug on Exhaust Emissions

Cited by 3 publications

References 17 publications

Strategies to Reduce Emissions from Diesel Engines under Cold Start Conditions: A Review

Strategies to Reduce Emissions from Diesel Engines under Cold Start Conditions: A Review

Problems with glow plug – a review

Influence of the In-Cylinder Catalyst on the Aftertreatment Efficiency of a Diesel Engine

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