Chemistry of Engine Combustion Deposits: Literature Review

Ebert, Lawrence B.

doi:10.1007/978-1-4613-2469-0_2

Cited by 14 publications

(8 citation statements)

References 13 publications

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“…D100 shows higher fractions of oxidized hydrocarbons and polymeric materials compared to the likes of ED100, ED99 and ED95. Some studies concluded that greater accumulation of hydrocarbon material is associated with the polymeric additives which acts like a binder or adhesive to promote deposit accumulation [7].…”

Section: Results and Discussion 31 Carbon Deposit Characterizationmentioning

confidence: 99%

The Use of Dihydroxy Fatty Acid and Palm-Based Polyol as Selected Components of Envo-Diesel Fuel Blends to Reduce C.I. Engine Gaseous Emissions and Carbon Deposits

Husnawan

Masjuki

Mahlia

et al. 2009

SAE Technical Paper Series

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The Engineering Meetings Board has approved this paper for publication. It has successfully completed SAE's peer review process under the supervision of the session organizer. This process requires a minimum of three (3) reviews by industry experts. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. ABSTRACTNowadays, engine problems such as higher NOx, increase in smoke content and low brake power output due to biofuel fueled engine have been reduced by several improvements by using additives or modifications on engine itself. This paper presents a type of compositions and proper combination of selected chemical components which may be used in palm oleindiesel blends namely "Envo-Diesel". The blended component was designed as an additive package which was blended with diesel-biofuel at 99:1 up to 95:5 percent ratios. Blended fuels with additive have been used in the single cylinder engine which operated under 2000 rpm for 100 hours. Engine performance and emissions tests were conducted as well as engine deposit analysis was done after 100 hours engine operation time. The result was found that by using combined additive engine fuel consumption was decreased about 5%, NO x and SO x emission also reduced about 10% and carbon deposit was found less compared to other fuels especially for higher percentage of additive. Other results such as engine power and CO emission were found quite similar with 100% diesel fuel. These phenomena was shown that by using selected additive in certain amount found to be suitable to reduce diesel engine consumption and exhaust emissions as well as minimizing carbon deposit.

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Section: Results and Discussion 31 Carbon Deposit Characterizationmentioning

confidence: 99%

The Use of Dihydroxy Fatty Acid and Palm-Based Polyol as Selected Components of Envo-Diesel Fuel Blends to Reduce C.I. Engine Gaseous Emissions and Carbon Deposits

Husnawan

Masjuki

Mahlia

et al. 2009

SAE Technical Paper Series

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show abstract

“…Although no glazed or shiny surface were observed (which would preclude melting), it is possible that some type of chemical reactions or phase changes may have been taking place within the deposit during this period of time. However, considering the complexity of the physical and chemical structure of combustion chamber deposits (Ebert 1985) it was difficult even to speculate as to the mechanisms by which the reported phenomena were taking place, and detailed chemical analysis was beyond the scope of this study.…”

Section: Calcium Fluoride Lensmentioning

confidence: 96%

Investigation of Combustion-Chamber Deposit Thermal Behavior Utilizing Optical RadiationMeasurements in a Fired Engine

Harder

Anderson

1988

Combustion Science and Technology

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An infrared radiometer, which incorporated three optical paths and operated between 3.5-4.0 I'm, was used to obtain transient surface temperatures in a fired engine. An integrated form of the equation of radiative transfer was applied to each optical path allowing gas emission, gas absorption and deposit surface radiation within the combustion-chamber to be characterized during a single cycle. Measurements of a simulated deposit were made at various temperatures and spark advance with the engine fired on methane and again on gasoline. Radiative characteristics of the combustion gases such as absorption and emission were investigated at several different operating conditions. A maximum error of 6% was found for temperature measurements between 660 and 900 Kelvins.Using a fast surface thermocouple with its junction located at the inner surface of the combustionchamber wall, two combustion-chamber deposits were accumulated for different lengths of time. Deposit surface and interface temperatures were investigated at several different operating conditions for each deposit. Utilizing the experimentally obtained deposit surface and interface temperatures, deposit thermal conductivity (k) and heat capacity (Qc) were determined via a computational model which treated k as a function of temperature. Values obtained for k and oc were well within the range of those reported for various forms of graphite.

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“…In terms of oxygen functionality, we may identify ÀOH (stretch at 3383 cm À1 ), aromatic anhydride carbonyl (stretch at 1775 cm À1 ), other carbonyl C@O (stretch at 1715 cm À1 ), and CAO (stretch at 1000-1250 cm À1 ). Carbon-oxygen bonds are also believed to play a major role in establishing the intermolecular bonding forming the ''polymeric" materials, which significantly contributed to the density of deposit [13]. In addition, the level of oxygen in the residue was expected for the inorganic ash (metal salts and oxides).…”

Section: Fourier Transform Infrared Analysismentioning

confidence: 98%

Thermal analysis of cylinder head carbon deposits from single cylinder diesel engine fueled by palm oil–diesel fuel emulsions

et al. 2009

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Chemistry of Engine Combustion Deposits: Literature Review

Cited by 14 publications

References 13 publications

The Use of Dihydroxy Fatty Acid and Palm-Based Polyol as Selected Components of Envo-Diesel Fuel Blends to Reduce C.I. Engine Gaseous Emissions and Carbon Deposits

The Use of Dihydroxy Fatty Acid and Palm-Based Polyol as Selected Components of Envo-Diesel Fuel Blends to Reduce C.I. Engine Gaseous Emissions and Carbon Deposits

Investigation of Combustion-Chamber Deposit Thermal Behavior Utilizing Optical RadiationMeasurements in a Fired Engine

Thermal analysis of cylinder head carbon deposits from single cylinder diesel engine fueled by palm oil–diesel fuel emulsions

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