Deposits in spark ignition engines – formation and threats

Stępień, Zbigniew

doi:10.19206/ce-116900

Cited by 12 publications

(3 citation statements)

References 6 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such fluctuations in values could be most reasonably explained by the simultaneous and opposed processes of contamination of the injectors and their cleaning, i.e. removal of already produced deposits by the following fuel dose (for example, during the formation of deposits on the inlet valves of the engine [28,29]). In order to better evaluate the trend of injection time changes of the tested fuel samples, their trend lines are drawn in Fig.…”

Section: Results Discussionmentioning

confidence: 99%

The impact of alcohol admixture with gasoline on carbon build-up and fuel injectors performance

Stępień¹,

Pielecha²,

Cieślik³

et al. 2022

Eksploatacja i Niezawodność – Maintenance and Reliability

Self Cite

View full text Add to dashboard Cite

The operating conditions of injectors in spark ignition engines with direct fuel injection make them susceptible to coking, which leads to a reduced quality of fuel atomization. This can be observed by a drop in performance and an increase in exhaust emissions, especially particulate matter. One effective method of reducing injector coking is by using detergentdispersing gasoline additives. The article describes the effect of using an admixture with a varied alcohol content on the quantitative and qualitative fuel atomization indicators. The research consisted of a 48-hour engine test, done in accordance with the CEC F-113-KC procedure (CEC-F-113 test). After each test cycle, the injectors underwent optical tests with the use of an isochoric chamber. The spray penetration and surface area were analyzed at a set of different fuel injection parameter values. The research performed resulted in determining the influence of each tested admixture on the change of injection time and on the geometric indicators of the fuel spray. The obtained characteristics of the engine in operation and conducted stationary tests enabled the operational evaluation of the impact an alcohol admixture with gasoline fuels had on key engine parameters.

show abstract

Section: Results Discussionmentioning

confidence: 99%

The impact of alcohol admixture with gasoline on carbon build-up and fuel injectors performance

Stępień¹,

Pielecha²,

Cieślik³

et al. 2022

Eksploatacja i Niezawodność – Maintenance and Reliability

Self Cite

View full text Add to dashboard Cite

show abstract

“…Consequently, the molecular structure of deposits in the combustion chamber depends on fuel characteristics like the heat of combustion and air‐fuel mixture ratio. Especially, during the cold start and warm‐up conditions, the deposits formations are higher on the engine components 183 . When ethanol blends are used in FFE, the valve deposits are increased than the gasoline due to more wear debris.…”

Section: Materials Compatibility Characteristics Of Flex‐fuel Enginementioning

confidence: 99%

“…Especially, during the cold start and warmup conditions, the deposits formations are higher on the engine components. 183 When ethanol blends are used in FFE, the valve deposits are increased than the gasoline due to more wear debris. Also, the buffered corrosion inhibitors and sulfates in the ethanol are significantly contributed to the formation of intake valve deposits.…”

Section: Deposit Formation Characteristics Of Ffementioning

confidence: 99%

Critical review on recent progress of ethanol fuelled flex‐fuel engine characteristics

Azhaganathan

Ashok

2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary Ethanol‐powered spark ignition (SI) engines have the potential to mitigate the twin crisis of fossil fuel depletion and exhaust emissions. However, the successful promotion of ethanol is hindered due to the restriction of fuel blend diversity and design features in the conventional SI engine. The fuel flexibility can be overcome by the use of flex‐fuel engine (FFE) technology with appropriate changes in engine design features for a wide range of ethanol blends. The understanding of FFE based on various technical aspects has greater potential in the automotive sector. Therefore, this review paper provides a holistic approach to critically analyze the various technical aspects of FFE. In this work, the application of ethanol blends on FFE output characteristics is reviewed critically considering the effects of engine operating conditions and parameters. Further, the impact of ethanol blends on material compatibility, cold starting characteristics, and unregulated emissions are analyzed. The outcome of the study shows that combustion and performance characteristics such as cylinder pressure(CP), heat release rate (HRR), and brake thermal efficiency (BTE) are improved in FFE operation due to the clean‐burning characteristics of ethanol blends. Also, carbon monoxide(CO) and hydrocarbon (HC) emissions decreased without any significant improvement in nitrogen oxides (NOx) emissions with a wide range of ethanol shares in FFE. Finally, this study summarizes the present status of research in FFE and creates a route towards the direction of multidisciplinary research need in the future that supports the application of different types of biofuels in FFE.

show abstract

Overview, Advancements and Challenges in Gasoline Direct Injection Engine Technology

Kalwar

Ágarwal

2019

Advanced Combustion Techniques and Engine Technologies for the Automotive Sector

View full text Add to dashboard Cite

Deposits in spark ignition engines – formation and threats

Cited by 12 publications

References 6 publications

The impact of alcohol admixture with gasoline on carbon build-up and fuel injectors performance

The impact of alcohol admixture with gasoline on carbon build-up and fuel injectors performance

Critical review on recent progress of ethanol fuelled flex‐fuel engine characteristics

Overview, Advancements and Challenges in Gasoline Direct Injection Engine Technology

Contact Info

Product

Resources

About