scholarly journals Engine Downsizing; Global Approach to Reduce Emissions: A World-Wide Review

2021 ◽  
Vol 2 (4) ◽  
pp. 384-399
Author(s):  
Mohammad Mostafa Namar ◽  
Omid Jahanian ◽  
Rouzbeh Shafaghat ◽  
Kamyar Nikzadfar
Keyword(s):  
Internal Combustion Engines ◽  
World Wide ◽  
Review Paper ◽  
International Energy Agency ◽  
Combustion Engines ◽  
Global Approach ◽  
Main Concept ◽  
Energy Agency ◽  
Reduce Emissions ◽  
Output Characteristics

Engine downsizing is a promising method to reduce emissions and fuel consumption of internal combustion engines. The main concept is reducing engine displacement volume keeping needed output characteristics unchanged. The issue became one of the most filed of interest in recent years after the International Energy Agency defined a target of 50 % reduction in global average emissions by the year 2030. In this review paper, different aspects of researchers’ efforts on engine downsizing are configured and due to overlaps, categorized into five main areas. Each category is discussed thoroughly and recent works are pointed. The global attention into these categories, countries involved and the trend changed in recent four years are presented in details. Doi: 10.28991/HIJ-2021-02-04-010 Full Text: PDF

The effects of DLC-coated journal on improving seizure limit and reducing friction under engine oil lubrication

2021 ◽  
pp. 146808742110129
Author(s):  
Hidemi Ogihara ◽  
Takumi Iwata ◽  
Yuji Mihara ◽  
Makoto Kano
Keyword(s):  
Internal Combustion Engines ◽  
Fuel Efficiency ◽  
Internal Combustion ◽  
Engine Oil ◽  
Combustion Engines ◽  
Main Bearing ◽  
Dlc Coating ◽  
Lubrication Regime ◽  
Mixed Lubrication Regime ◽  
Reduce Emissions

Internal combustion engines have been improved markedly in recent years through efforts to conserve resources, reduce emissions and improve fuel efficiency. In this regard, the authors have been working to reduce friction and improve the seizure properties of the crankshaft main journal and main bearing. These mechanical components of internal combustion engines incur large friction losses. In order to reduce friction, journals have been coated with a diamond-like carbon (DLC) coating, which has been reported to reduce friction in the fluid lubrication regime in recent years. Another current issue of journals and bearings is the need to improve seizure resistance. Therefore, these properties were evaluated for material combinations of aluminium alloy bearings and DLC-coated journals, which have low affinity. The results revealed that friction was reduced under a fluid lubrication regime and seizure resistance was improved under a mixed lubrication regime.

scholarly journals Analysis of the possibilities of using of DME fuel in motor boat drive systems

2017 ◽  
Vol 171 (4) ◽  
pp. 74-80
Author(s):  
Jacek KROPIWNICKI ◽  
Przemysław DOMINICZAK ◽  
Zbigniew KNEBA ◽  
Sławomir MAKOWSKI ◽  
Janusz CIEŚLIŃSKI ◽  
...  
Keyword(s):  
Control Systems ◽  
Dimethyl Ether ◽  
Internal Combustion Engines ◽  
Combustion Engines ◽  
Toxic Compounds ◽  
Small Vessels ◽  
Reduce Emissions ◽  
Drive Systems ◽  
And Control ◽  
Gas Supply

The characteristics of alternative fuel for diesel: dimethyl ether (DME) and an analysis of the potential to reduce emissions of toxic compounds by the engines when running on this fuel have been presented in this work. Basic types of design solutions of gas supply and control systems, possible for use in internal combustion engines with DME supply have been also presented. The paper presents a study of the legislation and an analysis of the feasibility of the system storage and fueling DME on board small vessels.

scholarly journals Progress of acetone-butanol-ethanol (ABE) as biofuel in gasoline and diesel engine: A review

2020 ◽  
Author(s):  
Ibham Veza ◽  
Mohd Farid Muhamad Said ◽  
Zulkarnain Abdul Latiff
Keyword(s):  
Internal Combustion Engines ◽  
Review Paper ◽  
Recovery Process ◽  
Abe Fermentation ◽  
Combustion Engines ◽  
Compression Ignition ◽  
Recent Developments ◽  
Ci Engine ◽  
Acetone Butanol Ethanol ◽  
Ci Engines

The properties of butanol offer more promising results compared to those of lower chain alcohol such as methanol or ethanol. However, butanol as a biofuel has not yet been commercially produced due to its costly process. Butanol is generally produced via the process of Acetone-Butanol-Ethanol (ABE) fermentation and can only be acquired after it was recovered from the ABE solvent. Despite the efforts and recent developments, obtaining higher butanol concentration from ABE fermentation is still relatively expensive and challenging. The idea of using ABE directly in internal combustion engines is then proposed to eliminate the recovery process. Several preliminary studies have reported several promising results of using ABE blends in both gasoline and diesel engines. However, researches in this area are still in the early stages, and thorough investigations are required. This review paper aims to provide essential findings from the latest development in the addition of ABE both with gasoline and diesel fuel in Spark Ignition (SI) and Compression Ignition (CI) engines. A brief discussion on ABE properties will be firstly given before the effects of its addition on SI and CI engine is comprehensively reviewed. The end of this article highlights some possible contributions and research gaps.

Mixture of Oil and Diesel as Fuel for Internal Combustion Engine

2014 ◽  
Vol 1030-1032 ◽  
pp. 1197-1200
Author(s):  
Martin Pexa ◽  
Jakub Mařík ◽  
Jakub Čedík ◽  
Zdeněk Aleš ◽  
Petr Valášek
Keyword(s):  
Internal Combustion Engine ◽  
Vegetable Oil ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Performance Parameters ◽  
Reduce Emissions

This paper deals with the use of vegetable oils as fuels for internal combustion engines. The use of pure vegetable oils is usually not possible due to its properties, especially for higher density and viscosity. If vegetable oil is used as 100% fuel, then it cannot do without adjustment of the engine. Without adjustments of the combustion engine the fuel can burn blended with vegetable oil so it does not significantly exceeded the requirements of the internal combustion engine to its properties. Application of admixtures of rapeseed oil and oil from Jatropha Curcas in ratio 5.5 and 19.7% provides minimal to almost no effect on the performance parameters of the internal combustion engine, but positively translates to reduce emissions (particularly smoke and carbon monoxide).

Emission spectroscopy based sensor developed for engine testing

2017 ◽  
Vol 84 (1) ◽  
Author(s):  
Fabian Feldhaus ◽  
Ingo Schmitz ◽  
Thomas Seeger
Keyword(s):  
Emission Spectroscopy ◽  
Internal Combustion Engines ◽  
Combustion Temperature ◽  
Sensor System ◽  
Combustion Engines ◽  
Compression Ignition ◽  
Compression Ignition Engines ◽  
Reduce Emissions ◽  
Engine Testing ◽  
Combustion Processes

AbstractEmissions of internal combustion engines are linked to air pollution, global warming effects and are potentially harmful. In order to reduce emissions, a better understanding of combustion processes is necessary. Therefore, the combustion temperature is an important factor to know, because it has an impact on the amount of exhaust gases like soot and nitrogen oxides. This work presents a complete spectral resolved emission spectroscopy based sensor system for temperature determining in compression ignition engines. The sensor system is developed for series engines and can be used without any modification of the engine.

Simulation and Experimental Study of a Diesel Engine Based on an Electro-Hydraulic FVVA System

2018 ◽  
Author(s):  
Yong Lu ◽  
Jian Li ◽  
Lijun Xiong ◽  
Bo Li
Keyword(s):  
Internal Combustion Engines ◽  
Fuel Efficiency ◽  
Combustion Engines ◽  
Optimization Strategy ◽  
Nsga Ii ◽  
Engine Simulation ◽  
Simulation Results ◽  
Combined Simulation ◽  
Reduce Emissions ◽  
Variable Valve

Variable valve timing technologies for internal combustion engines are used to improve power, torque, reduce emissions and increase fuel efficiency. Firstly, the paper presents a new electrohydraulic FVVA system which can control the seating velocity of engine valve flexibly. Secondly, based on the NSGA-II genetic algorithm, outlines multi-objective optimization strategy, the paper designs the parameters of FVVA system to make the system easier to implement. Thirdly, the paper builds the combined FVVA engine simulation model. The combined simulation and experimental are executed to validate the designed FVVA engine. Simulation results show brake power is improved between 1.31% and 4.48% and torque is improved by 1.32% to 4.47%. Brake thermal efficiency and volumetric efficiency also show improvement. Experimental results have good agreement with simulation results. The research results can provide a basis for engine modification design.

Using green-hydrogen and bioethanol fuels in internal combustion engines to reduce emissions

2019 ◽  
Vol 44 (24) ◽  
pp. 12324-12332 ◽  
Author(s):  
J.D. Becerra-Ruiz ◽  
R.G. Gonzalez-Huerta ◽  
J. Gracida ◽  
A. Amaro-Reyes ◽  
G. Macias-Bobadilla
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Reduce Emissions
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