Welcome from Sibendu Som & Keynote by Prof. Bryan Willson, Executive Director of the Energy Institute at Colorado State University: The Role of Internal Combustion Engines in a Decarbonizing World

Friction is a determining factor in the efficiency and performance of internal combustion engines. Losses in the form of friction work typically account for 10–20% of an engine’s output. Improvements in the friction characteristics of the power cylinder assembly are essential for reducing total engine friction and improving the mechanical efficiency of internal combustion engines. This paper describes the development and implementation of a new concept of the “floating liner” engine at Colorado State University that allows 0.5 crank angle deg resolved measurement of the forces on the cylinder along three axes—in the axial direction, the thrust direction, and along the wrist pin. Three different lubricants with differing properties were tested to observe the friction characteristics of each. The experimental results showed that the floating liner engine was able to resolve changes in friction characteristics coinciding with changes in lubricant viscosity and temperature. The axial force increases at TDC and BDC were observed as lubricant viscosity was decreased and larger amounts of mixed and boundary lubrication began to occur. For each test the axial friction force data was used to calculate total cycle friction work. The thrust and off-axis (wrist pin direction) forces are discussed under the same circumstances.

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Role of Legislation and State Policy in Minimizing the Impact of Threats to Environmental Safety in the Automobile Transport Sector

Bulletin of Kharkiv National University of Internal Affairs ◽

10.32631/v.2020.4.04 ◽

2020 ◽

Vol 91 (4) ◽

pp. 49-58

Author(s):

I. V. Bryhadyr ◽

I. V. Panova

Keyword(s):

State Policy ◽

Internal Combustion Engines ◽

Negative Impact ◽

Internal Combustion ◽

Road Transport ◽

Environmental Safety ◽

Motor Vehicles ◽

Combustion Engines ◽

The Impact

The role of legislation and state policy in minimizing the impact of threats to environmental safety in the field of automobile transport has been studied. The main directions of the development of state policy and legislation in the field of reducing the negative impact of motor vehicles on the environment and public health have been defined. The main problems of reducing the negative impact of motor vehicles on the environment and public health, as well as the development of state and legal mechanisms to overcome them have been determined. The main environmental problems faced by governments are the use of internal combustion engines and fuel quality indicators. Many EU countries are refusing to further impose more strict requirements on the operation of motor fuel engines, instead introducing mechanisms to completely abandon such vehicle propulsion systems. However, such a refusal raises another problem of greening of road transport – the problem of electrification of transport, in the process of which it is necessary to solve the problems of transport energy and disposal of used batteries of electric vehicles. The authors have emphasized on inexpediency that to be limited in the long run only to mechanisms for setting more strict emission requirements for cars. The authors have indicated the need for a comprehensive approach to solving environmental problems to prevent the emergence of new significant difficulties – the accumulation of used batteries of electric cars, the depletion of non-renewable resources for their manufacture, etc. It has been offered to join Ukraine to the pan-European initiative of electrification of road transport, to develop the state program for the transformation of the motor transport industry with clear deadlines for the introduction of restrictions on the use of internal combustion engines, to introduce mechanisms to financially stimulate the transition from internal combustion engines to electric combustion engines.

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Tri-Axial Force Measurements on the Cylinder of a Motored SI Engine Operated on Lubricants of Differing Viscosity

ASME 2009 Internal Combustion Engine Division Spring Technical Conference ◽

10.1115/ices2009-76037 ◽

2009 ◽

Author(s):

Bryan O’Rourke ◽

Donald Radford ◽

Rudolf Stanglmaier

Keyword(s):

Axial Force ◽

Internal Combustion Engines ◽

Axial Direction ◽

Internal Combustion ◽

Mechanical Efficiency ◽

Combustion Engines ◽

Friction Characteristics ◽

Colorado State University ◽

And Performance ◽

Lubricant Viscosity

Friction is a determining factor in the efficiency and performance of internal combustion engines. Losses in the form of friction work typically account for 10–20% of an engine’s output. Improvements in the friction characteristics of the power cylinder assembly are essential for reducing total engine friction and improving the mechanical efficiency of internal combustion engines. This paper describes the development and implementation of a new concept of the ‘floating liner’ engine at Colorado State University that allows 0.5 crank angle degree resolved measurement of the forces on the cylinder along 3 axes — in the axial direction, the thrust direction, and along the wrist pin. Three different lubricants with differing properties were tested to observe the friction characteristics of each. Experimental results showed that the floating liner engine was able to resolve changes in friction characteristics coinciding with changes in lubricant viscosity and temperature. Axial force increases at TDC and BDC were observed as lubricant viscosity was decreased and larger amounts of mixed and boundary lubrication began to occur. For each test the axial friction force data was used to calculate total cycle friction work. The thrust and off-axis (wrist pin direction) forces are discussed under the same circumstances.

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Role of biofuel and their binary (diesel–biodiesel) and ternary (ethanol–biodiesel–diesel) blends on internal combustion engines emission reduction

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2015.08.046 ◽

2016 ◽

Vol 53 ◽

pp. 265-278 ◽

Cited By ~ 154

Author(s):

M. Mofijur ◽

M.G. Rasul ◽

J. Hyde ◽

A.K. Azad ◽

R. Mamat ◽

...

Keyword(s):

Emission Reduction ◽

Internal Combustion Engines ◽

Internal Combustion ◽

Combustion Engines

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Investigation of the environmental performance of a diesel engine when operating on multicomponent biofuel

Izvestiya MGTU MAMI ◽

10.31992/2074-0530-2021-49-3-70-75 ◽

2021 ◽

Vol 1 (3) ◽

pp. 70-75

Author(s):

S.A. Plotnikov ◽

◽

D.G. Sergeyev ◽

M.V. Smol'nikov ◽

A.I. Shipin ◽

...

Keyword(s):

Diesel Engine ◽

Boreal Forests ◽

Alternative Fuels ◽

Internal Combustion Engines ◽

Internal Combustion ◽

Environmental Indicators ◽

Scientific School ◽

Combustion Engines ◽

State University ◽

Fuel Balance

Local types of fuels occupy 33.6% in the fuel balance of the Kirov region. The share of con-sumption of local fuels in the region is one of the highest in Russia. The Vyatka State University (VyatSU) in cooperation with the Belarusian State Agricultural Academy (BSAA) carry out the tests of the operation of automotive diesel engines on fuels with rapeseed oil (RO) and ethanol (E) additives, and spark internal combustion engines with generator gas (GG) additives. A new area of work of the scientific school is the study of the use of multicom-ponent compositions of biofuel compositions (MKBTK-15 and MKBTK-25). The use of such com-positions as a fuel compensates some of their distinctive properties for further use in internal com-bustion engines without changing the design and adjustments. The use of alternative fuels (AF) in internal combustion engines is a main topic for research. However, the use of any AF requires that the environmental indicators of the engine remain within acceptable limits. An important task is to determine the dependences of the emissions of toxic com-ponents on the load. The use of MKBTK-15 and MKBTK-25 as AF for engines will improve the environmental sit-uation in the region and reduce the need for commercial fuel. The operation of a diesel engine on multicomponent biofuel compositions makes it possible to reduce the smoke content of exhaust gases by 65% and 85%, the content of total nitrogen oxides remains at the same level or slightly decreases. There is a slight increase in the content of carbon dioxide СО2 up to 22.3%, but the solutions to this problem are already known. One of the ways is to preserve and increase boreal forests, which have great potential for absorbing greenhouse gases.

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