- The Promise of Sugarcane Ethanol as a Cleaner Combustion Engine Fuel

2011 ◽  
pp. 119-146
Keyword(s):  
Combustion Engine ◽  
Engine Fuel

scholarly journals Laminar Burning Velocity of Biogas-Containing Mixtures. A Literature Review

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 996
Author(s):  
Venera Giurcan ◽  
Codina Movileanu ◽  
Adina Magdalena Musuc ◽  
Maria Mitu
Keyword(s):  
Gas Turbines ◽  
Internal Combustion Engines ◽  
Fossil Fuels ◽  
Combustion Engine ◽  
Burning Velocity ◽  
Internal Combustion ◽  
Electricity Production ◽  
Engine Fuel ◽  
Laminar Burning Velocity ◽  
Waste Products

Currently, the use of fossil fuels is very high and existing nature reserves are rapidly depleted. Therefore, researchers are turning their attention to find renewable fuels that have a low impact on the environment, to replace these fossil fuels. Biogas is a low-cost alternative, sustainable, renewable fuel existing worldwide. It can be produced by decomposition of vegetation or waste products of human and animal biological activity. This process is performed by microorganisms (such as methanogens and sulfate-reducing bacteria) by anaerobic digestion. Biogas can serve as a basis for heat and electricity production used for domestic heating and cooking. It can be also used to feed internal combustion engines, gas turbines, fuel cells, or cogeneration systems. In this paper, a comprehensive literature study regarding the laminar burning velocity of biogas-containing mixtures is presented. This study aims to characterize the use of biogas as IC (internal combustion) engine fuel, and to develop efficient safety recommendations and to predict and reduce the risk of fires and accidental explosions caused by biogas.

Ethanol as Internal Combustion Engine Fuel

Ethanol ◽  
2019 ◽  
pp. 215-229
Author(s):  
Risto Ilves ◽  
Arne Küüt ◽  
Jüri Olt
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Engine Fuel

Research on Variable Cylinders of the Tandem 4-Cylinder Gasoline Engine for Fuel Economy

2008 ◽  
Vol 20 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Kouki Yamaji ◽  
◽  
Hirokazu Suzuki ◽  
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Gasoline Engine ◽  
Combustion Engine ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Engine Fuel ◽  
Electronic Control ◽  
The Difference ◽  
Predetermined Time

With progress in internal combustion engine fuel economy, variable cylinder systems have attracted attention. We measured fuel consumption in cylinder cutoff by stopping the injector alone, collected data changing the location and number of cutoff cylinders and when varying the cutoff cylinder, and compared the difference in fuel cost reduction. A transistor is inserted serially into the injector control circuit of the electronic control unit (ECU). By controlling the transistor via microcomputer, the injector is turned on or off independently from ECU control in obtain cylinder cutoff. The amount of fuel consumption is measured using enhancement mode of a failure diagnostic device based on the OBD II standard to collect injection time and rotational speed of the injector for a predetermined time and calculated based on this data. We confirmed that by stopping the injector alone, fuel consumption was reduced 6 to 22% and is reduced when the cutoff cylinder is varied.

scholarly journals DEVELOPMENT OF METHODS FOR NONDESTRUCTIVE TESTING OF INTERNAL COMBUSTION ENGINE FUEL EQUIPMENT

2020 ◽  
Author(s):  
Г.Д. КОКОРЕВ ◽  
Е.А. ЖУРАВЛЕВА
Keyword(s):  
Internal Combustion Engines ◽  
Fourier Transforms ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Time Interval ◽  
Technical Diagnostics ◽  
Engine Fuel ◽  
Mechanical Parameters ◽  
Destructive Testing ◽  
The Relationship

В исследовании рассмотрены некоторые составляющие технической эксплуатации автомобильной техники (АТ), связанные с диагностированием топливной аппаратуры двигателей внутреннего сгорания (ДВС), причем с целью осуществления неразрушающего контроля предлагается применять ультразвуковую и акустико-эмиссионную системы технического диагностирования.Необходимо констатировать, что при рассмотрении соотношений, показывающих взаимосвязь акустических и физико-механических параметров материалов, в основном используется временной интервал, и при его некорректном измерении получаем низкую информативность и невысокую точность акустических методов определения механических характеристик. При разработке методики использованы принципы спектрального анализа импульсов, отраженных от исследуемых элементов АТ, на которых опирается также метод разработки как аппаратного так и программного обеспечения для обработки полученных сигналов. Результаты предыдущих исследований дают основание полагать, что применение преобразований Фурье обеспечивает получение достоверной информации, основанной на акустических сигналах, если последовательность измерений составляет около 10 секунд. Опыт разработчиков системы свидетельствует о высокой информативности параметров распространения рэлеевских волн. В связи с этим система была укомплектована специально разработанным малобазным датчиком рэлеевских волн. Регистрированные отраженные сигналы в последующем обрабатываются пакетом прикладных программ. Данный преобразователь может быть эффективно использован в задачах контроля накопления повреждений в материале элементов АТ, подвергаемых упруго-пластическим и усталостным воздействиям.Принцип действия системы основан на стробоскопическом эффекте восстановления отраженных импульсов, которые получаются в результате «облучения» материала обследуемого элемента АТ зондирующими импульсами в указанной полосе частот. The study considers some components of technical operation of automotive equipment (at) related to the diagnosis of fuel equipment of internal combustion engines, and for the purpose of non-destructive testing, it is proposed to use ultrasonic and acoustic emission systems for technical diagnostics. It should be noted that when considering the relations showing the relationship between acoustic and physical-mechanical parameters of materials, the time interval is mainly measured, and if the measurement is incorrect, the relationship between the acoustic and physical-mechanical parameters of the material often gives low information content and low accuracy of acoustic methods for determining mechanical characteristics. When developing the technique, the principles of spectral analysis of pulses refl ected from the studied at elements are used, which also support the method of developing both hardware and software for processing the received signals. The results of previous studies suggest that the use of Fourier transforms provides reliable information based on acoustic signals, if the measurement sequence is about 10 seconds. The experience of the system developers shows that the parameters of Rayleigh wave propagation are highly informative. In this regard, the system was equipped with a specially developed low-base relay wave sensor. The registration of refl ected signals is then processed by a package of application programs. This Converter can be effectively used in the tasks of monitoring the accumulation of damage in the material of at elements subjected to elastic-plastic and fatigue effects. The principle of operation of the system is based on the stroboscopic effect of recovery of refl ected pulses, which are obtained as a result of "irradiation" of the material being examined by the at element with probing pulses in the specifi ed frequency band.

Layer-by-layer mixing in engines with direct gasoline injection

2020 ◽  
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Gasoline Engine ◽  
Combustion Engine ◽  
Direct Injection ◽  
Fuel Efficiency ◽  
Layer By Layer ◽  
Engine Fuel ◽  
Working Process ◽  
Layered Charge

Features of the design and operation of engines with direct injection of gasoline into the cylinders and layer-by-layer mixing are considered. Opportunities of improving the engine fuel efficiency and exhaust gases toxicity characteristics with this organization of the working process are shown. Problems arising when organizing such a working process of a gasoline engine are noted. Keywords internal combustion engine; diesel engine; gasoline engine; direct injection; layer-by-layer mixing; layered charge; lean mixture

Corrigendum to “A review on recent progress in computational and empirical studies of compression ignition internal combustion engine” [Fuel 279 (2020) 118469]

Fuel ◽  
2020 ◽  
Vol 281 ◽  
pp. 118755
Author(s):  
Satishchandra Salam ◽  
Tushar Choudhary ◽  
Arivalagan Pugazhendhi ◽  
Tikendra Nath Verma ◽  
Abhishek Sharma
Keyword(s):  
Internal Combustion Engine ◽  
Recent Progress ◽  
Combustion Engine ◽  
Empirical Studies ◽  
Internal Combustion ◽  
Engine Fuel ◽  
Compression Ignition

scholarly journals FAILURE MECHANISMS CAUSED BY MOTOR OIL DEGRADATION AND THEIR STUDY AS PART OF EXPERTISE OF TECHNICAL CONDITION OF GASOLINE CAR ENGINES

2021 ◽  
Vol 1 (48) ◽  
pp. 302-314
Author(s):  
Sarayev A ◽  
◽  
Khrulev A ◽  
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Engine Fuel ◽  
Oil Degradation ◽  
Causal Relationships ◽  
Motor Oil ◽  
Technical Expertise ◽  
Practical Application ◽  
Oil Exposure

The article considers the main symptoms and causes of accelerated motor oil aging in the gasoline engine operation. This process is revealed when conducting auto-technical expertise and is caused by motor oil being exposed to various constructive and operational factors. The object of the study is the automotive internal combustion engine affected by fuel and motor oil that have abnormal properties. The goal of the work is to develop a method that can be used for the tasks of auto-technical expertise and can help clarify the types and symptoms of various effects on motor oil, as well as determine the causes for the changes in its properties when the engine is running. The research method is experimental-theoretical and includes the analysis of a large amount of data that were obtained during auto-technical expert research and demonstrated how various factors affect motor oil properties. To solve the problem, an algorithm for logical analysis has been developed that determine the nature of motor oil exposure to fuel. It describes the causal relationships between the failure event and the underlying events that initiate the change in oil properties. A logical graph is obtained for the analysis of causal relationships and determination of the failure cause due to lack of bearing lubrication that occurs as a result of oil exposure to fuel, which includes the formation of deposits, sediment, changes in oil viscosity. The practical application of the method is most expedient in the tasks of auto-technical expertise of engine faults. The obtained results help avoid gross errors in determining the cause of the formation of sediment in oil and/or deposits on the walls. Based on large factual material, it has been determined that the processes of oil exposure to fuel are random. However, attempts to obtain a mathematical description of the problem in order of assess the probability of this type of failure are complex and do not lead to any useful equations for practical application. In such conditions, the use of the developed logical algorithm becomes the most expedient, especially when determining the causes of engine failures, when they are caused by the use of abnormal fuel. KEYWORDS: INTERNAL COMBUSTION ENGINE, FUEL, OIL, DEGRADATION, FAILURE.

scholarly journals Performance Characteristics of an Four Stroke Compression Ignition Engine by Arranging Convergent Divergent Nozzle in the Intake Manifold

2012 ◽  
pp. 163-168
Author(s):  
M. Chandramouli ◽  
V. Pandurangadu ◽  
V. CVS Phaneendra
Keyword(s):  
Combustion Engine ◽  
Performance Characteristics ◽  
Intake Manifold ◽  
Engine Fuel ◽  
Compression Ignition ◽  
Air Velocity ◽  
Compression Ignition Engine ◽  
Engine Knock ◽  
Ci Engine ◽  
Inlet Manifold

Growing demands on reduction of Internal Combustion Engine fuel consumption with increase of its performance new designs and optimization of existing ones are introduced. Air motion in CI Engine influences the atomization and distribution of fuel injected in the air charge. Better atomization of Injected fuel allows for a more complete burn and helps to reduce the engine Knock. A four stroke compression ignition engine with power 9 H.P and rated speed 1500 rpm is selected for the present work to investigate the performance characteristics. The swirl motion of the air is an important parameter in optimizing the performance of the engine. In order to increase the air velocity in the inlet manifold a convergent-divergent nozzle is used. The rise in velocity with the use of nozzle generates turbulence at the exit of the manifold which facilitates for better combustion of injected fuel. The Performance characteristics were calculated without nozzle and with out nozzle in the inlet manifold and compared.

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