Description and Performance Analysis of a Flow Test Rig to Simulate Altitude Pressure Variation for Internal Combustion Engines Testing

2014 ◽  
Vol 7 (4) ◽  
pp. 1686-1696 ◽  
Author(s):  
José Galindo ◽  
José Ramón Serrano ◽  
Pedro Piqueras ◽  
Javier Gómez
Keyword(s):  
Performance Analysis ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Pressure Variation ◽  
Combustion Engines ◽  
Test Rig ◽  
Flow Test ◽  
And Performance

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

2010 ◽  
Vol 132 (9) ◽  
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 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.

scholarly journals HONING PERFORMANCE ANALYSIS WITH PART HEIGHT PEN SPEED AT INTERNAL COMBUSTION ENGINES REPAIR

2021 ◽  
pp. 34-37
Author(s):  
M. Yu. Polyanchikova ◽  
D. V. Selivanova ◽  
A. V. Kachalova ◽  
M. V. Nikitin
Keyword(s):  
Surface Layer ◽  
Performance Analysis ◽  
Internal Combustion Engines ◽  
Cylinder Liner ◽  
Internal Combustion ◽  
High Accuracy ◽  
Combustion Engines ◽  
Shape Accuracy ◽  
Surface Layer Quality ◽  
Tool Rotation

Both in the manufacture and repair of critical parts of mechanical engineering and engine building, great attention is paid to the formation of a trace on the surface, the surface layer quality and the geometric shape accuracy. However, methods of achieving high accuracy in the parts manufacture and their repair after operation differ significantly. The article assesses the possibility of implementing the honing method with a variable height speed of tool rotation (hon) patented by the author, and analyses the productivity of this method when repairing the internal combustion engines cylinder liner at a taper value of 0.20 mm.

scholarly journals Development of a virtual bench for the analysis of the physical processes of internal combustion engines

2021 ◽  
Vol 2102 (1) ◽  
pp. 012013
Author(s):  
J P Rojas Suárez ◽  
J A Pabón León ◽  
M S Orjuela Abril
Keyword(s):  
Heat Release ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Maximum Deviation ◽  
Pressure Curve ◽  
Combustion Engines ◽  
Operating Characteristics ◽  
And Performance

Abstract Currently, internal combustion engines face the challenge of reducing fuel consumption and reducing polluting emissions due to their significant impact on the environment. Therefore, it is necessary to use tools that allow us to evaluate the operating characteristics of this type of thermal machines. In the present investigation, the development of a virtual bench was proposed for the analysis of the behavior and performance characteristics of an internal combustion engine for use as a learning tool in higher education students. From the results obtained, it could be demonstrated that the pressure curves of the combustion chamber and the rate of heat release obtained by means of the virtual bench presented a high concordance with the experimental records. The maximum deviation obtained was 5% and 15% for the pressure curve and the heat release rate. Comparing the performance parameters of the brake specific fuel consumption of the engine and energy efficiency, a maximum deviation of 2.96% was shown compared to the real engine. In general, the virtual development bank can describe the behavior of the engine, allowing the characterization of physical phenomena, as well as evaluating the effect of auxiliary technologies such as turbo-compression systems.

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

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.

Advanced Techniques for Engine Research and Design

1989 ◽  
Vol 203 (3) ◽  
pp. 169-183 ◽  
Author(s):  
C C J French
Keyword(s):  
High Speed ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Recent Past ◽  
And Performance ◽  
Research And Design ◽  
Speed Computer ◽  
Made In

This paper discusses technical improvements that have been made to internal combustion engines in the recent past. It then goes on to show that, with the availability of the high-speed computer, great possibilities exist for many more advances to be made in design and performance.

REVIEW OF CONVENTIONAL AIR CONDITIONING SYSTEM FOR INTERNAL COMBUSTION ENGINES

2013 ◽  
Vol 21 (02) ◽  
pp. 1330001 ◽  
Author(s):  
JAE-HYEONG SEO ◽  
HYUNG-JIN KIM ◽  
KWANG-JONG JUNG ◽  
DAE-WAN KIM ◽  
JEONG-KUK YEOM ◽  
...  
Keyword(s):  
Air Conditioning ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Air Conditioning System ◽  
Automotive Air Conditioning ◽  
Automotive Air Conditioning System ◽  
Experimental Works ◽  
And Performance ◽  
Effective Design

In spite of the increase of the concern on electric vehicles (which is called green cars) and electrically driven automotive air conditioning system, the conventional automotive air conditioning system for internal combustion engines has been still investigated widely due to the realistic consideration. This paper is intended to include many automotive air conditioning system articles published in 1997 to 2013. This review, although extensive cannot include every paper; some selection is necessary. Reviewed papers herein are related to the research and development on effective design and performance improvement for the automotive air conditioning system and components, including theoretical, numerical, analytical and experimental works. Therefore, a number of published articles about the automotive air conditioning system, which contain the belt-driven compressors, heat exchangers and refrigerants, were considered. Many researches have focused on improving the efficiency of automotive air conditioning system to decrease the usage rate of the internal combustion engines.

Determination of the nomenclature of indicators for evaluation and analysis of operational and technical characteristics of internal combustion engines (ICE) of auto-tractor equipment

2020 ◽  
pp. 3-10
Author(s):  
K. Sovin
Keyword(s):  
Performance Indicators ◽  
Information Exchange ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Electronic Control ◽  
Control Units ◽  
Tractor Equipment ◽  
And Performance

The article provides performance indicators of internal combustion engines (ICE) of autotractor equipment by means of information exchange via CAN of tyres between electronic control units. The device is classified depending on its fi eld of application, as well as the list of components, operation of which is provided by application of CAN bus. Main values and performance indicators of ICE are indicated when using electronic control units: ACU, CAB, CCU, CLC, ECU, HCU, ICU, PTQ, TEC, VLC.

Optimization of the Flow in the Catalytic Converter of Internal Combustion Engines by Means of Screens

2008 ◽  
Vol 130 (5) ◽  
Author(s):  
Eduardo M. R. Arantes ◽  
Marcello A. F. Medeiros
Keyword(s):  
Pressure Drop ◽  
Service Life ◽  
Internal Combustion Engines ◽  
Catalytic Converter ◽  
Internal Combustion ◽  
Current Paper ◽  
Combustion Engines ◽  
Flow Uniformity ◽  
And Performance ◽  
Large Improvement

The flow in the automotive catalytic converter is, in general, not uniform. This significantly affects cost, service life, and performance, in particular, during cold startup. The current paper reports on a device that provided a large improvement in flow uniformity. The device is to be placed in the converter inlet diffuser and is constructed out of ordinary screens. It is cheap and easy to install. Moreover, the device does not present most of the undesired effects, such as increase in pressure drop and time to light off, often observed in other devices developed for the same purpose.

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