Characterization of Deposits and Effects of Detergent Additive, Olefin Content and Engine Oil on Intake Valve Deposit Formation

Ansomboon, Jiraporn; Wuttimongkolchai, Arunratt; Pannoi, Sanya; Fukuda, Kota

doi:10.4271/2000-01-2856

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…Ansomboon et al also investigated the deposits with seven types of fuel and three types of lubricating oil, and focused on the comparison between the intake-valve deposits (IVDs) and CCDs. 51 Some important characteristics of CCDs were proposed. For example, CCDs on the piston top contained more hydrocarbon oil than CCDs on the cylinder head, only with less oxidized and carbonized products, which is conducive to understanding the deposit formation mechanism.…”

Section: Deposit Formationmentioning

confidence: 99%

A review of experimental studies on deposits in the combustion chambers of internal combustion engines

Shu

Dong

Liang

2012

International Journal of Engine Research

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This article reviews experimental studies on deposits in engine combustion chambers, with emphasis on deposit composition, damage to engines, formation mechanisms and study methods. The existence of combustion chamber deposits will definitely influence performance and emissions of engines, and is inevitable with the use of petroleum fuel and lubricating oil. These all make it necessary to study the formation, composition, structure and influential factors of deposits, which will provide the basis for reducing deposits in engines. Influential factors and methods of reducing deposit formation are also included. First, the deposit damage to engines is briefly introduced, with a focus mainly on the decline in engine performance and the deterioration of emissions, and the reasons for these phenomena are explained. Next, conclusions on deposit research approaches to their chemical composition and physical structure are drawn. Finally, with regards to deposit formation in gasoline and diesel engines, deposit composition and factors influencing deposit formation, such as engine type, fuel type, oil type, additives, exhaust gas recirculation, etc., are enumerated through experimental studies on engines. Studies on deposit formation with some newly developed types of fuel are also included. The mechanism of deposit formation under these different conditions is explained, and the methods for reducing deposit formation are summarized.

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Section: Deposit Formationmentioning

confidence: 99%

A review of experimental studies on deposits in the combustion chambers of internal combustion engines

Shu

Dong

Liang

2012

International Journal of Engine Research

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Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5][6][7] It is also known that the major component of the intake valve deposit is produced from the engine oil, 2 and that the amount of intake valve deposit can be decreased using synthetic oil as the base engine oil rather than mineral oil. 2,4,6 Furthermore, it is known that the characteristics of viscosity index improvers, metallic detergents, and ashless dispersants reduce the formation of intake valve deposits, 3 and that fuel detergent additives may reduce intake valve deposition in port injection SI engines. 2,3 Regarding deposit formation in the intake system of a compression ignition (CI) engine, exhaust gas recirculation (EGR) cooler deposit and EGR valve deposit are some of the known types.…”

Section: Introductionmentioning

confidence: 99%

“…2,4,6 Furthermore, it is known that the characteristics of viscosity index improvers, metallic detergents, and ashless dispersants reduce the formation of intake valve deposits, 3 and that fuel detergent additives may reduce intake valve deposition in port injection SI engines. 2,3 Regarding deposit formation in the intake system of a compression ignition (CI) engine, exhaust gas recirculation (EGR) cooler deposit and EGR valve deposit are some of the known types. [8][9][10][11] In the case of EGR cooler deposit, it is known that particulate matter and hydrocarbon in the exhaust gas are the main components.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of deposit formation on an electronic throttle body

Hatsuzawa

Tanaka

Konno

2014

International Journal of Engine Research

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The buildup of deposits on the electronic throttle body (ETB) used to control the intake air flow in an internal combustion engine causes various problems. To obtain information that can be used to prevent the buildup of such deposit, the characteristics and mechanism of the deposit formation were investigated by analysis of the components of the deposit, measurement of the distribution of the deposit thickness, and numerical analysis of the intake air flow. The deposit was found to comprise a complex of fuel and engine oil, high molecular components, and inorganic matter, with engine oil being the major component. The distribution of the deposit thickness was also observed to be similar to that of the temperature decrease across the butterfly valve, indicating that the temperature decrease was related to the deposit formation. In addition, it was established that the deposit component on the downstream side of the butterfly valve was transported very close to the butterfly valve by a circulatory flow. Based on the study results, it is postulated that the mechanism of the ETB deposit formation involves the initial transportation, by the blow-by gas, of hydrocarbons to the ETB air passage, where the hydrocarbons are condensed and adhere to the passage wall just behind the butterfly valve, owing to sudden drop in the air temperature under small valve opening angle conditions. The formed deposit subsequently builds up by attracting fuel, engine oil, combustion products, and suspended solids in the atmospheric air intake passing through the air cleaner.

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“…30%. Because of the reduction of aromatic hydrocarbons content, it will be justified to increase the share of both those fractions content, as well as of oxygen compounds, such as ethers and alcohols, but due to the reduction of vapours pressure, also their content will be limited [1,23].…”

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confidence: 99%

Influence of E85 ethanol fuel composition on engine oil properties

Żółty

Badawczy

Sacha

2018

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The article presents results of work aimed at determining the influence of hydrocarbon gasoline used to composed E85 ethanol fuel on the properties of engine oil used in spark ignition Flex Fuel automobile engine. For this purpose, two ethanol fuels were composed which consisting of 85% (V/V) ethanol and 15% (V/V) conventional hydrocarbon gasoline, which was obtained from two producers. As an object of the study, an engine oil was recommended for this type of engine lubrication, the SAE 5W-30 viscosity grades and ACEA A5/B5 quality grade engine oil was selected. Monitoring of the properties of the subjected oil was carried out before and after 300 hours of engine operation. Test samples of engine oil retained their rheological properties at levels corresponding to their viscosity grade.

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Characterization of Deposits and Effects of Detergent Additive, Olefin Content and Engine Oil on Intake Valve Deposit Formation

Cited by 7 publications

References 7 publications

A review of experimental studies on deposits in the combustion chambers of internal combustion engines

A review of experimental studies on deposits in the combustion chambers of internal combustion engines

Mechanism of deposit formation on an electronic throttle body

Influence of E85 ethanol fuel composition on engine oil properties

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