scholarly journals Performance and Emission Test on Corn Oil Blended Diesel with Hydrogen Fuel

2019 ◽  
Vol 8 (4) ◽  
pp. 4508-4510
Keyword(s):  
Internal Combustion Engines ◽  
Corn Oil ◽  
Fuel Efficiency ◽  
Environmental Issues ◽  
Present Situation ◽  
Combustion Engines ◽  
Hydrogen Fuel ◽  
Performance And Emission ◽  
The Past ◽  
Alternate Fuel

In the present situation, oil-based fuels and coal lead to a few environmental issues for the past few decades, solution for the above issue is utilizing bio fuel for Internal Combustion engines. Bio fuel has been developed for the betterment of fuel efficiency and emission controls. This study is a about preparing a blended alternate fuel (corn oil blended diesel + hydrogen) and evaluate the performance of an engine. The study revealed that the blended oil produces less emission than Diesel

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 Fuel Cells: The Next Evolution

MRS Bulletin ◽  
2005 ◽  
Vol 30 (8) ◽  
pp. 581-586 ◽  
Author(s):  
Robert W. Lashway
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Internal Combustion Engines ◽  
Materials Science ◽  
Electrical Conductance ◽  
Electrical Energy ◽  
Pure Oxygen ◽  
Combustion Engines ◽  
Hydrogen Fuel ◽  
Wide Range

AbstractThe articles in this issue of MRS Bulletin highlight the enormous potential of fuel cells for generating electricity using multiple fuels and crossing a wide range of applications. Fuel cells convert chemical energy directly into electrical energy, and as a powergeneration module, they can be viewed as a continuously operating battery.They take in air (or pure oxygen, for aerospace or undersea applications) and hydrocarbon or hydrogen fuel to produce direct current at various outputs. The electrical output can be converted and then connected to motors to generate much cleaner and more fuelefficient power than is possible from internal combustion engines, even when combined with electrical generators in today's hybrid engines. The commercialization of these fuel cell technologies is contingent upon additional advances in materials science that will suit the aggressive electrochemical environment of fuel cells (i.e., both reducing an oxidizing) and provide ionic and electrical conductance for thousands of hours of operation.

Analysis of Current Hybrid-Electric Automobile Drivetrains and Proposal of an Alternative Powertrain

2020 ◽  
Author(s):  
Andrew Ahn ◽  
Thomas S. Welles ◽  
Benjamin Akih-Kumgeh
Keyword(s):  
Electric Vehicles ◽  
Hybrid Electric Vehicle ◽  
Internal Combustion Engines ◽  
Hybrid Electric Vehicles ◽  
Global Climate ◽  
Low Cost ◽  
Fuel Efficiency ◽  
Combustion Engines ◽  
Hybrid Electric ◽  
Hybrid Configuration

Abstract Byproducts of fossil fuel combustion contribute to negative changes in the global climate. Specifically, emissions from automobiles are a major source of greenhouse gas pollution. Efforts to minimize these harmful emissions have led to the development and sustained improvement of hybrid drivetrains in automobiles. Despite many advancements, however, hybrid systems still face substantial challenges which bear on their practicality, performance, and competitive disadvantage in view of the low cost of today’s traditional internal combustion engines. These imperfections notwithstanding, hybrid electric vehicles have the potential to play significant roles in the future as cleaner transportation solutions. Actualization of this potential will depend on the ability of hybrid-electric vehicles to minimize their disadvantages while increasing their positive features relative to traditional combustion engines. This research investigates current hybrid electric architectures in automobiles with the aim of suggesting an alternative, more efficient hybrid configuration that utilizes current technology. This is completed by utilizing an iterative design process to compare how various components of existing hybrids can be combined and/or improved to develop a single, efficient and cohesive system that performs comparably to or surpasses existing ones in fuel efficiency and low emissions in all driving conditions. A critical and comparative analysis is provided based on current hybrid-electric vehicle architectures as well as a plausible alternative.

Calculation and Optimization of Tribocontacts and Lubrication Systems of Internal Combustion Engines for Various Types of Lubricant

2005 ◽  
Author(s):  
S. Sivrikova ◽  
J. Rojdestvensky ◽  
I. Petrov ◽  
S. Popova
Keyword(s):  
Steady State ◽  
Internal Combustion Engines ◽  
Fuel Efficiency ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Lubrication System ◽  
Optimum Choice ◽  
Transient And Steady State

Quality, reliability and fuel efficiency of internal combustion engines (ICE) substantially depend upon optimum choice of lubrication system and tribocontact design and a lubricant liquid. This paper describes a quasistatic method of analysis of ICE lubrication systems for Newtonian and non-Newtonian oils. The method allows for both transient and steady-state conditions.

Science in Relation to Regulating and Promoting Civil Aviation

1929 ◽  
Vol 33 (228) ◽  
pp. 1139-1166
Keyword(s):  
Similar Condition ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Air Transport ◽  
Civil Aviation ◽  
Combustion Engines ◽  
The Past ◽  
Mechanical Devices ◽  
Physical Laws ◽  
Made In

During the past quarter of a century great strides have been made in perfecting the science of aviation. Too much credit cannot be given to the men who have laboured untiringly in the laboratories in an endeavour to determine with mathematical certainty the physical laws that govern the mechanical devices which mankind is using in his conquest of the air.Science has done more for civil aviation, however, than unravel the mysteries of aerodynamics and internal combustion engines. It has provided many important aids to air navigation, such as improved lighting facilities for airways and airports, wireless as a means of communication between ground and aeroplane, and also as a beacon to guide the pilot on his course, and numerous instruments which now adorn the cockpit of every aeroplane.While at times the development of air transport may suffer because of lack of co–ordination between the laboratory and the factory, it will suffer far more should a similar condition exist between the scientists and those charged with the duty of regulating and promoting civil aviation.

scholarly journals IMPACT OF AUTOMOTIVE AND MOTORCYCLE SPORT ON THE ENVIRONMENT

2019 ◽  
Vol 17 (Suppl.1) ◽  
pp. 860-863
Author(s):  
Boyan Doytchev
Keyword(s):  
Future Development ◽  
Environmental Conditions ◽  
Environmental Sustainability ◽  
Internal Combustion Engines ◽  
Age Groups ◽  
Environmental Issues ◽  
Combustion Engines ◽  
Electric Motors ◽  
Different Types ◽  
Motor Sports

Automotive and motorcycle sports are motor sports in which various vehicles (serial and modified cars, motorcycles, buggies, jeeps, trucks, prototypes, etc.) compete with engines of different types (electric motors, hybrid and mostly thermal internal combustion engines - piston and partly rotary). Interest in the discuss sport are progressively increases in the years from people of different age groups. The article comments on environmental issues related to these sports and environmental recommendations for their application. The combined efforts of various institutions are needed to increase the popularity and awareness of sport that can be realized under optimal environmental conditions and does not impair its environmental sustainability. This requires an actual environmental policy and education aimed at future development in this direction.

scholarly journals Surface Texture Influences on the Running-in Behavior and Friction Reduction

2018 ◽  
Vol 159 ◽  
pp. 02017
Author(s):  
Zhouyong Hou ◽  
Tomomi Honda
Keyword(s):  
Surface Texture ◽  
Internal Combustion Engines ◽  
Friction And Wear ◽  
Fuel Efficiency ◽  
Surface Profile ◽  
Friction Reduction ◽  
Profile Measurement ◽  
Textured Surface ◽  
Combustion Engines ◽  
Textured Surfaces

For improving automobile fuel efficiency, the internal combustion engines must be required to reduce the friction and wear. Changing viscosity of lubricant and surface pressure could succeed, but the seizure is easy to happen in engines. However, the surface texture can solve those problems. The running-in behavior affects friction and wear on whole combustion engines. If the running-in is not carefully designed, catastrophic accident can happen. This experiment investigates that the running-in behavior is influenced by textured surfaces and the tested materials are the cast iron and the different area ratio of dimple of aluminum alloy combination. The friction coefficient and the number and size of wear particles are measured by the friction sensor and particle counter. After the tests, the worn surfaces are measured through using surface profile measurement systems, and some significant phenomena are observed and analyzed. The textured surface verifies good consequence and tribological advantages.

scholarly journals Hydrogen Internal Combustion Engine

2021 ◽  
pp. 112-115
Keyword(s):  
Fuel Cell ◽  
Rare Earths ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Short Time

Hydrogen fuel constitutes an attainable alternative strategy, which can be implemented in the long term. This strategy can avoid the risk of commodity supply dependency (rare earths and copper) and can delay the still open decisions on e-mobility. Hydrogen internal combustion engines represent a doable and less expensive solution for using hydrogen than purchasing a new car equipped with a hydrogen fuel cell. Conventional piston engines can be switched to gas operation with relatively little change. This approach is environmentally more viable, as in a short time most vehicles can be switched to emission-free operation. Also, it can avoid the risk of commodity supply dependency (rare earths and copper) and can delay the still open decisions on e-mobility.

Heat and Power Plants and Their Automatic Control and Regulation Systems

2020 ◽  
pp. 106-130
Author(s):  
V.A. Markov
Keyword(s):  
Power Plant ◽  
Automatic Control ◽  
Power Plants ◽  
Internal Combustion Engines ◽  
Energy Transport ◽  
Fuel Efficiency ◽  
Internal Combustion ◽  
Technical Conference ◽  
Combustion Engines ◽  
Russian Scientific

The paper emphasizes the relevance of research aimed at further improving the systems of automatic control and regulation of heat and power plants, mainly plants with reciprocating internal combustion engines. The study assessed the current level of the development of these systems, and analyzed the prospects of their use as mobile and stationary heat and power plants. These plants are widely used in various sectors of the economy --- energy, transport, agriculture, so it appears important to describe the main directions of further improvement of these plants and their automatic control and regulation systems. The purpose of the research was to further increase the power indicators of heat and power plants, improve their fuel efficiency and exhaust gas toxicity, and enhance the dynamic qualities of internal combustion engines. In our study, we also examined the main directions of improving the fuel supply and air supply systems of engines, their work process, adaptation of engines to work on various alternative types of fuel. Findings of research show that it is necessary to expand the functional capabilities of control and regulation systems, implement integrated adaptive control of a heat and power plant and its systems, use electronic microprocessor devices in the structure of regulators, enhance the multi-parameter efficiency of the operation of a heat and power plant and its elements, taking into account the whole set of parameters of this plant The paper was based on the materials of the reports of the all-Russian scientific and technical conference n.a. Professor V.I. Krutov (29.01.2020)

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