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

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 on the Lean-Burn Characteristics Under Steady Condition in Spark-Ignition Engine

1996 ◽  
Author(s):  
Kazumitsu Kobayashi ◽  
Seiichi Shiga ◽  
Takuma Kon-no ◽  
Shigeru Nakajima ◽  
Takehisa Handa ◽  
...  
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Steady Condition ◽  
Lean Burn ◽  
Fuel Atomization

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.

Investigation of Cyclic Variation of IMEP Under Lean Burn Operation in Spark-Ignition Engine

1997 ◽  
Author(s):  
Kiyoshi Ishii ◽  
Takashi Sasaki ◽  
Yasuhiro Urata ◽  
Kazuo Yoshida ◽  
Toshihisa Ohno
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Cyclic Variation ◽  
Lean Burn

Simulation of Extended Expansion Lean Burn Spark Ignition Engine

2004 ◽  
Author(s):  
A. Manivannan ◽  
R. Ramprabhu ◽  
P. Tamilporai ◽  
S. Chandrasekaran
Keyword(s):  
Heat Transfer ◽  
Compression Ratio ◽  
Thermal Efficiency ◽  
Numerical Study ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Valve Closure ◽  
Intake Valve ◽  
Lean Burn ◽  
Atkinson Cycle

This paper deals with Numerical Study of 4-stoke, Single cylinder, Spark Ignition, Extended Expansion Lean Burn Engine. Engine processes are simulated using thermodynamic and global modeling techniques. In the simulation study following process are considered compression, combustion, and expansion. Sub-models are used to include effect due to gas exchange process, heat transfer and friction. Wiebe heat release formula was used to predict the cylinder pressure, which was used to find out the indicated work done. The heat transfer from the cylinder, friction and pumping losses also were taken into account to predict the brake mean effective pressure, brake thermal efficiency and brake specific fuel consumption. Extended Expansion Engine operates on Otto-Atkinson cycle. Late Intake Valve Closure (LIVC) technique is used to control the load. The Atkinson cycle has lager expansion ratio than compression ratio. This is achieved by increasing the geometric compression ratio and employing LIVC. Simulation result shows that there is an increase in thermal efficiency up to a certain limit of intake valve closure timing. Optimum performance is attained at 90 deg intake valve closure (IVC) timing further delaying the intake valve closure reduces the engine performance.

Experimental and theoretical study of valveless fuel supply system for PDE

Shock Waves ◽  
2009 ◽  
pp. 251-256
Author(s):  
D.I. Baklanov ◽  
S.V. Golovastov ◽  
N.W. Tarusova ◽  
L.G. Gvozdeva
Keyword(s):  
Theoretical Study ◽  
Supply System ◽  
Fuel Supply ◽  
Fuel Supply System
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