scholarly journals SI engine fuel mixture type indicator and an assessment of its suitability of an economic driving style

2021 ◽  
Author(s):  
Zbigniew Wołczyński ◽  
Mikołaj Żak
Keyword(s):  
Urban Areas ◽  
Fuel Injection ◽  
Fuel Mixture ◽  
Spark Ignition Engine ◽  
Engine Fuel ◽  
Driving Style ◽  
Correct Operation ◽  
Type Indicator ◽  
Noticeable Reduction ◽  
Direct Fuel Injection

The article presents the structure and a principle of operation of a simple indicator of the type of a fuel-air mixture supplying a spark-ignition engine with a direct fuel injection. The designed indicator was tested, as a result of which its correct operation was verified. By using information from the indicator, it was possible to assess its usefulness for assisting the driver in an economical driving style. Preliminary studies show that thanks to the use of the developed indicator, it is possible to save about 10% of fuel as a result of the correction of the economic driving style on the route selected for the purpose of this research paper. The target of this study was to confirm a noticeable reduction in fuel consumption when supplying the engine with a stratified mixture. In order to obtain more accurate data, the research should be extended to include a greater number of routes and its division into urban and non-urban areas.

scholarly journals Recognition of combustion process irregularities in small volume displacement diesel engines with the use of non-dimensional characteristics of the vibration signal

2017 ◽  
Vol 169 (2) ◽  
pp. 18-23
Author(s):  
Jerzy MERKISZ ◽  
Marek WALIGÓRSKI
Keyword(s):  
Urban Areas ◽  
Small Volume ◽  
Fuel Injection ◽  
Combustion Process ◽  
Diagnostic Algorithm ◽  
Vibration Signal ◽  
Technical Object ◽  
Operation Process ◽  
Short Time ◽  
Direct Fuel Injection

The subject of the considerations described in the paper is the problem of early detection of abnormalities and damages during operation process of the turbo diesel engine with small volume displacement and direct fuel injection, which is used in modern LDV vehicles dedicated especially for urban areas, in the context of present and future requirements for a technical object diagnostics, taking into account the criteria of optimizing overall efficiency, toxic compound emission and safety of the object in real conditions of its operation. The paper presents the results of empirical research of vibroacoustic signal application to the diagnostic evaluation of correctness of short-time engine main processes. The evaluation of the combustion process variability from structural and operational abnormalities by using dimensionless estimates of a vibration process was conducted, and functional characteristics necessary to built the diagnostic algorithm in accordance with the requirements of on-board diagnostics were obtained.

scholarly journals Research on combustion process of gasoline homogenous charge compression ignition engine

2018 ◽  
Vol 184 ◽  
pp. 01013
Author(s):  
Corneliu Cofaru ◽  
Mihaela Virginia Popescu
Keyword(s):  
Experimental Research ◽  
Fuel Injection ◽  
Combustion Process ◽  
Fuel Mixture ◽  
Spark Ignition Engine ◽  
Injection System ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Engine Operation ◽  
Homogenous Charge Compression Ignition

The paper presents the research designed to develop a HCCI (Homogenous Charge Compression Ignition) engine starting from a spark ignition engine platform. The chosen test engine was a single cylinder, four strokes provided with a carburettor. The results of experimental research data obtained on this version were used as a baseline for the next phase of the research. In order to obtain the HCCI configuration, the engine was modified, as follows: the compression ratio was increased from 9.7 to 11.5 to ensure that the air – fuel mixture auto-ignite and to improve the engine efficiency; the carburettor was replaced by a direct fuel injection system in order to control precisely the fuel mass per cycle taking into account the measured intake air-mass; the valves shape were modified to provide a safety engine operation by ensuring the provision of sufficient clearance beetween the valve and the piston; the exchange gas system was changed from fixed timing to variable valve timing to have the possibilities of modification of quantities of trapped burnt gases. The cylinder processes were simulated on virtual model. The experimental research works were focused on determining the parameters which control the combustion timing of HCCI engine to obtain the best energetic and ecologic parameters.

An Experimental Optimisation of a Spark Ignition Engine Fuel Injector to Reduce the Total Hydrocarbon Emissions During Cold Start Conditions

2002 ◽  
Author(s):  
M. Cardone ◽  
V. Cioffi ◽  
A. De Fenzo ◽  
C. De Marino ◽  
A. Senatore ◽  
...  
Keyword(s):  
Fuel Injection ◽  
Chemical Conversion ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Exhaust Emission ◽  
Engine Fuel ◽  
Spark Ignition Engines ◽  
Fuel Injector ◽  
Gas Treatment ◽  
Cold Starts

Engine exhaust emission limits have been subject to increasingly severe controls during the last few years. This has led to the need for a suitably structured systemic approach to the problem of exhaust gas treatment, instead of just focusing on improving catalytic converters efficiency, in other words, it has become increasingly more productive, and necessary, to carry out “global” optimization of the chemical conversion process generally present when gases are burnt, along with activities aimed directly at reduce the cause of their creation, acting on the engine geometric and operating parameters. This work was aimed at an operating experimental analysis of alternative fuel injection systems to optimize their use in order to reduce exhaust emissions in spark ignition engines, especially during cold starts in low temperature conditions.

Analysis on Effects of Fuel Cam on High-Pressure Fuel System

2011 ◽  
Vol 328-330 ◽  
pp. 948-952
Author(s):  
Ming Hai Li ◽  
Biao Liu ◽  
You Bo Ning
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Fuel Mixture ◽  
Injection System ◽  
Engine Fuel ◽  
Operating Characteristics ◽  
Engine Simulation ◽  
Cam Profile

GT-Suite software is used to establish the simulation model of high-pressure fuel injection system for diesel engine. Simulation parameters are modified based on the comparison with given experimental results. In order to improve diesel engine fuel injection performance, the cam profile was improved to ensure a high injection pressure and smooth operating characteristics. A more reasonable fuel cam profile was designed by analyzing the injection characteristics and dynamics. It improves the fuel mixture formation and combustion, so diesel economy and emissions performance are also guaranteed.

scholarly journals The impact of particulate filter substrate type on the gaseous exhaust components emission

2020 ◽  
Vol 183 (4) ◽  
pp. 58-62
Author(s):  
Barbara Sokolnicka-Popis ◽  
Natalia Szymlet ◽  
Maciej Siedlecki ◽  
Dawid Gallas
Keyword(s):  
Internal Combustion Engines ◽  
Fuel Injection ◽  
Metal Substrate ◽  
Solid Particles ◽  
Spark Ignition Engine ◽  
Particulate Filter ◽  
Combustion Engines ◽  
Substrate Type ◽  
Direct Fuel Injection ◽  
The Impact

The article presents ceramic and metal substrate filtration efficiency in the particulate filter of a spark-ignition engine with direct fuel injection. Gaseous exhaust components were taken into account. There are many publications on the solid particles mass and number reduction, so the authors examined the effect of catalytic carriers on gaseous compounds, such as CO, NOx, THC, whose content also poses a threat to human health and life, and this issue is not often described in the literature dedicated to measurements of modern internal combustion engines. During the tests, the length and carrier material effect on the emission of harmful substances in exhaust gases was determined.

scholarly journals Analysis of components of self-ignition engine exhaust gases powered with biofuels

2021 ◽  
Vol 351 ◽  
pp. 01020
Author(s):  
Marietta Markiewicz ◽  
Jan Gutsche ◽  
Adam Talaśka ◽  
Anna Dzioba
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Methyl Esters ◽  
Fuel Injection ◽  
Methyl Esters ◽  
Fuel Mixture ◽  
Diesel Oil ◽  
Exhaust Gases ◽  
Acid Methyl ◽  
Result Analysis ◽  
Direct Fuel Injection

Ecological approach to transport including the fuel which is used in combustion engines involves a necessity of alternative solution application. The study shows test result analysis of the amount of exhaust gases affecting natural environment. The tests were performed for a 81W self-ignition engine with a direct fuel injection. The experiment was conducted for a fuel mixture containing 70% of diesel oil 30% of fatty acid methyl esters. The results regarding concentration of fuel components obtained for the analyzed mixture were compared with the results obtained for a diesel oil without fatty acid methyl esters. Based on the analysis, it can be said that 30% additive of fatty acid methyl esters to diesel oil is not enough to decrease the amount of harmful substance emission to the atmosphere by a power unit.

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