Mechanism of Combustion Chamber Deposit Interference and Effects of Gasoline Additives on CCD Formation

Nagao, Masaki; Kaneko, Takashi; Omata, Tatsuo; Iwamoto, Shin-ichi; Ohmori, Hirofumi; Matsuno, Shigeru

doi:10.4271/950741

Cited by 20 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While eliminating carbon, besides the gasoline specific consumption reduction, the requirements for the gasoline octane number also reduce. It is known from the vehicle operation practice that the carbon elimination reduces the engine's requirements for the gasoline octane number by 7-10 points [39][40][41].…”

Section: Influence Of the Additive On The Gasoline Specific Consumptionmentioning

confidence: 99%

Investigation on the Possibility of Increasing the Environmental Safety and Fuel Efficiency of Vehicles by Means of Gasoline Nano-Additive

et al. 2019

View full text Add to dashboard Cite

Environmental safety problem originated from vehicles requires development and exploration of integrated and effective solutions, which considers the development level of technologies, the cost of their widespread use, the legislation requirements and other relevant aspects. One improvement method of the petroleum-derived fuels characteristics is the use of additives that complement the refining methods and provide ample opportunities to influence the individual characteristics. The aim of this work is to study the influence of the developed multifunctional surface-active nano-additive on the gasoline characteristics and engine performance. The measurement results confirmed the effective reduction of the surface tension of gasoline at the boundary with air, improving the mixture formation in the engine. On the other hand, the saturated vapor pressure was significantly decreased, which dramatically reduces evaporation losses and air pollution by light hydrocarbons. The use of the additive, due to a combination of its surface-active and catalytic action, significantly increases the fuel efficiency of engines and reduces octane requirements, greenhouse gases emissions, as well as noise level during operation of vehicles, and the environmental safety of vehicle operation increases.

show abstract

Section: Influence Of the Additive On The Gasoline Specific Consumptionmentioning

confidence: 99%

Investigation on the Possibility of Increasing the Environmental Safety and Fuel Efficiency of Vehicles by Means of Gasoline Nano-Additive

et al. 2019

View full text Add to dashboard Cite

show abstract

“…However, the published data showed that carbon content is in range of 30%-70% [1,[10][11][12][13]. And the radiotracer study concluded the majority of carbon was from the diesel fuel [27].…”

Section: Discussionmentioning

confidence: 89%

“…Based on the results in refs. [1,[10][11][12][13], the carbon content in the CCD is in the range of 35%-70% by weight, oxygen content is in the range from 16% to 25%. Hydrogen and Nitrogen content is lower than 10%.…”

Section: Introductionmentioning

confidence: 99%

Thermal and elemental analysis of the combustion chamber deposits in a large-scale two-stroke marine diesel engine

Zhang

Zeng

Sun

et al. 2015

Sci. China Technol. Sci.

View full text Add to dashboard Cite

It is of significance to understand the chemical content of carbon deposits in the large-scale two-stroke (LSTS) marine diesel engine because of adverse effect on the engine performance, oil consumption and emissions. In this work, two different combustion chamber deposits in an LSTS marine diesel engine were studied using thermogravimetry analysis (TGA), elemental analysis (EA) and synchrotron X-ray fluorescence (SXRF). One was on the piston top and the other on the piston land, termed PTCD and PLCD, respectively. For the PTCD sample, the 97% residue in the TGA and 1.4% carbon content in the EA indicated the main compositions of PTCD were metal salts or oxides and ashes, significantly different from the previous findings of the highest carbon content in deposits from the small four stroke engines. The different chemical content between PTCD and PLCD implied higher thermal load in the LSTS marine diesel engine led to a nearly complete thermal decomposition of PTCD. The higher calcium content in PTCD and PLCD indicated the additives of cylinder oil should be the main source of metal content of PTCD and PLCD. Calcium distribution in the SXRF results was indicative of the potential layered structure in PTCD and PLCD. In addition, the appearance of iron on the surface against the piston in PTCD and PLCD indicated iron oxides formation between carbon deposit and piston materials. combustion chamber deposits, thermogravimetry analysis, elemental analysis, marine diesel engine, synchrotron X-ray fluorescence spectrometry Citation:Zhang X S, Zeng X M, Sun X C, et al. Thermal and elemental analysis of the combustion chamber deposits in a large-scale two-stroke marine diesel engine.

show abstract

“…It has long been recognized that combustion chamber deposits (CCD) forming on both piston tops and cylinder heads could adversely affect the operation of spark-ignition engines. Such deposit accumulation can lead to various forms of abnormal combustion [6][7][8] [9] . One form is seen in deposit-created hot spots causing uncontrolled surface ignition that leads to knocking, run-on, and rumble.…”

Section: Fig1 Location and Performance Effects Of Engine Depositsmentioning

confidence: 99%

Control Automotive Exhausts and Fuel-Saving by Introducing Improved Detergent Additives

Luo

2012

AMR

View full text Add to dashboard Cite

Automotive emissions bring out serious influences on urban environment. They are becoming the major urban source of atmospheric pollution, with the rapid development of automobile industry. They are more and more serious in Chinese big cities, and also important globally. A new kind of detergent additives was developed on the base of engine combustion mechanism via depressing the quench layer. For the purpose of evaluating the effects of fuel-saving and emission control, idle tests and platform tests were done; results show the exhaust emission were reduced evidently and automobile’s performance were improved observably.

show abstract

Mechanism of Combustion Chamber Deposit Interference and Effects of Gasoline Additives on CCD Formation

Cited by 20 publications

References 15 publications

Investigation on the Possibility of Increasing the Environmental Safety and Fuel Efficiency of Vehicles by Means of Gasoline Nano-Additive

Investigation on the Possibility of Increasing the Environmental Safety and Fuel Efficiency of Vehicles by Means of Gasoline Nano-Additive

Thermal and elemental analysis of the combustion chamber deposits in a large-scale two-stroke marine diesel engine

Control Automotive Exhausts and Fuel-Saving by Introducing Improved Detergent Additives

Contact Info

Product

Resources

About