scholarly journals The criteria of fuelling the dual-fuel SI engine with gasoline and methanol

2013 ◽  
Vol 153 (2) ◽  
pp. 12-19
Author(s):  
Zdzisław Stelmasiak ◽  
Janusz Semikow
Keyword(s):  
Methyl Alcohol ◽  
Spark Ignition ◽  
Supply System ◽  
Spark Ignition Engine ◽  
Dual Fuel ◽  
Stable Operation ◽  
Fuel Supply ◽  
Fuel Supply System ◽  
Pure Methanol ◽  
Valve Engine

In the paper are discussed test results of dual fuel spark ignition engine with multipoint injection of alcohol and gasoline in area of inlet valve. Engine fuelling was accomplished through a prototype fuel supply system comprising duplex injectors controlled electronically. Implemented system enables fuelling of the engine with pure gasoline, with pure methanol, or simultaneous combustion of the both fuels mixture with any fraction of the alcohol. The tests were performed on four cylinder, spark ignition engine of Fiat 1100 MPI type. In the paper are presented criteria to be fulfilled in dual fuel spark ignition engine run on gasoline and methyl alcohol. The criteria were developed on the base of engine testing performed on engine dynamometer. When developing the criteria, one took assumption of energetic equity of fuel doses in traditional and dual fuel supply system in every operational point of the engine. The second criterion consisted in maintaining a minimal elementary dose of gasoline and alcohol injectors, which would assure stable operation of the engine. In result of the performed analysis one proposed a map of possible ranges of dual fuel feeding of the engine with methyl alcohol and gasoline.

Effect of Fuel Atomization at a Fuel Supply System on the Lean Burn Characteristics in a Spark-Ignition Engine

1991 ◽  
Author(s):  
Seiichi Shiga ◽  
Kazumitsu Kobayashi ◽  
Takuma Kon-No ◽  
Takao Karasawa ◽  
Toshio Kurabayashi
Keyword(s):  
Spark Ignition ◽  
Supply System ◽  
Spark Ignition Engine ◽  
Lean Burn ◽  
Fuel Supply ◽  
Fuel Atomization ◽  
Fuel Supply System

DIESEL MIXED FUEL: PROBLEMS AND INNOVATIVE INVENTIONS

2016 ◽  
Vol 1 (2) ◽  
pp. 46-51 ◽  
Author(s):  
Уханов ◽  
Denis Ukhanov ◽  
Уханов ◽  
Aleksandr Ukhanov ◽  
Адгамов ◽  
...  
Keyword(s):  
Vegetable Oil ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Supply System ◽  
Dual Fuel ◽  
Original Design ◽  
Mixed Fuel ◽  
Fuel Supply ◽  
Biodiesel Blend ◽  
Fuel Supply System

The goal of the research is constructive adaptation of automotive diesel engines working by diesel mixed fuel. A perspective kind of an alternative motor fuel is biodiesel blend produced with mixing of vegetable oil and conventional diesel fuel in different percentages. The present diesel-powered machinery is not adapted to work on such kind of fuel because of the different properties of biodiesel and diesel fuels. Applying of the invented devices (such as dual-fuel supply system, the mixer-filter and ultrasonic fuel mixer) allows to adapt automotive diesel engines for work on biodiesel blend. The dual-fuel supply system performs engine start, warm-up and stop modes on mineral diesel fuel, and its work on biodiesel blend on other modes. The original design of the fuel mixer-filter provides effective mixing of components and filtration from contaminants. Due to the high frequency vibrations the ultrasonic mixer provides the obtaining of homogeneous fuel composition and molecular splitting of higher fatty acids contained in vegetable oil.

Development of a Mechanical CNG-Diesel Dual Fuel Supply System

1993 ◽  
Author(s):  
Dong Soo Jeong ◽  
Sung Woo Suh ◽  
Seung Mook Oh ◽  
Kyo Nam Choi
Keyword(s):  
Supply System ◽  
Dual Fuel ◽  
Fuel Supply ◽  
Fuel Supply System

Experimental Assessment of a Diesel-LPG Dual Fuel Supply System for Retrofit Application in City Busses

2012 ◽  
Author(s):  
Georgios Fontaras ◽  
Urbano Manfredi ◽  
Giorgio Martini ◽  
Panagiota Dilara ◽  
Giovanni Deregibus
Keyword(s):  
Supply System ◽  
Dual Fuel ◽  
Experimental Assessment ◽  
Fuel Supply ◽  
Fuel Supply System

scholarly journals Numerical Study of Engine Performance and Emissions for Port Injection of Ammonia into a Gasoline\Ethanol Dual-Fuel Spark Ignition Engine

2021 ◽  
Vol 11 (4) ◽  
pp. 1441
Author(s):  
Farhad Salek ◽  
Meisam Babaie ◽  
Amin Shakeri ◽  
Seyed Vahid Hosseini ◽  
Timothy Bodisco ◽  
...  
Keyword(s):  
Numerical Study ◽  
Combustion Process ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Combustion Model ◽  
Dual Fuel ◽  
Spark Ignition Engines ◽  
Performance And Emissions ◽  
Hc Emissions

This study aims to investigate the effect of the port injection of ammonia on performance, knock and NOx emission across a range of engine speeds in a gasoline/ethanol dual-fuel engine. An experimentally validated numerical model of a naturally aspirated spark-ignition (SI) engine was developed in AVL BOOST for the purpose of this investigation. The vibe two zone combustion model, which is widely used for the mathematical modeling of spark-ignition engines is employed for the numerical analysis of the combustion process. A significant reduction of ~50% in NOx emissions was observed across the engine speed range. However, the port injection of ammonia imposed some negative impacts on engine equivalent BSFC, CO and HC emissions, increasing these parameters by 3%, 30% and 21%, respectively, at the 10% ammonia injection ratio. Additionally, the minimum octane number of primary fuel required to prevent knock was reduced by up to 3.6% by adding ammonia between 5 and 10%. All in all, the injection of ammonia inside a bio-fueled engine could make it robust and produce less NOx, while having some undesirable effects on BSFC, CO and HC emissions.

Effective indicators of a hydrogen engine operating on a lean mixture and equipped with a modified fuel supply system

Trudy NAMI ◽  
2021 ◽  
pp. 58-66
Author(s):  
R. Z. Kavtaradze ◽  
B. Sun ◽  
A. S. Golosov ◽  
Zh. Chen ◽  
Ts. Chzhan ◽  
...  
Keyword(s):  
Power Control ◽  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Supply System ◽  
Practical Significance ◽  
High Quality ◽  
Lean Mixture ◽  
Fuel Supply ◽  
Fuel Supply System

Introduction (problem statement and relevance). Limited oil reserves and tightening environmental standards are forcing engine manufacturers to switch to alternative fuels in the near future, among which hydrogen is the most promising. The advantages of hydrogen are high specific heat of combustion and high combustion rate. Wide concentration limits of hydrogen combustion make it possible to use high-quality power control, thereby providing an increase in the efficiency of a hydrogen engine when compared to the basic internal combustion engine.The purpose of the study was to ensure the operation of a serial gasoline engine running on hydrogen with a new experimental fuel supply system, as well as the modification of the intake manifold design without abnormal phenomena during combustion when operating on a lean mixture, and to obtain efficient and ecological characteristics of a hydrogen engine under bench test conditions, as a result.Methodology and research methods. The work is experimental, the reliability of the results obtained is confirmed by the use of modern means for measuring and processing experimental data. The obtained results of measuring nitrogen oxides are adequate to the known Zel'dovich thermal mechanism. The value of the results lies in the fact that they show the feasibility of transferring serial internal combustion engines to hydrogen; in addition, these results are used to develop and verify mathematical 3D models of the hydrogen engine working process.Scientific novelty and results. A new system providing the necessary characteristics (pressure, duration and cycle dose) for supplying hydrogen to the intake system with two injectors for each cylinder was designed, installed and tested on the prototype engine.Practical significance. The expediency of the working cycle creation and efficiency of a hydrogen engine with an experimental lean-burn fuel supply system was confirmed, which made it possible to provide high-quality power control with external mixture formation and forced ignition.

scholarly journals Performance Small Spark Ignition Engine Using Producer Gas From Coal Gasification: Dual Fuel Operation

2021 ◽  
Vol 56 (3) ◽  
pp. 241-247
Author(s):  
Fajri Vidian ◽  
Abdul Kholis
Keyword(s):  
Coal Gasification ◽  
Spark Ignition ◽  
Constant Load ◽  
Spark Ignition Engine ◽  
Dual Fuel ◽  
Producer Gas ◽  
Effective Pressure ◽  
Shaft Power ◽  
Power Operation

This study proposed a dual fuel operation of a mix of gasoline and producer gas from coal gasification on the spark ignition engine. The experiment was carried out on a constant load with variations in speed for single fuel operation of gasoline and dual fuel operation of a mix of gasoline and producer gas to see the influence on speed, torque, power, and braking (effective pressure). The power produced was compared to power produced by the single fuel of producer gas that has been reported in the literature. The result shows an increase of speed would increase torque, power, and braking (effective pressure) for single fuel operation of gasoline and dual fuel operation of a mix of gasoline and producer gas. The power operation of dual fuel of a mix of and gasoline and producer gas will decrease by about 10.9% compared to operation of single fuel of gasoline, and the power operation of the single fuel of producer gas will decrease by about 20% compared to the operation of the single fuel of gasoline. The maximum shaft power produced by dual fuel operation is 1.49 kW at a load of 5 kg and a speed of about 3,500 rpm.

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