Numerical analysis of single cylinder engine crankshaft

2020 ◽  
Author(s):  
S. Ajith Arul Daniel ◽  
P. Shenbaga Velu ◽  
R. Kumar ◽  
S. Vijay Ananth
Keyword(s):  
Numerical Analysis ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Engine Crankshaft

Effect of Inertia Variation Due to Reciprocating Parts and Connecting Rod on Coupled Free Vibration of Crankshaft

1997 ◽  
Vol 119 (1) ◽  
pp. 257-263 ◽  
Author(s):  
S. Rajendran ◽  
M. V. Narasimhan
Keyword(s):  
Free Vibration ◽  
Natural Frequencies ◽  
Free Vibrations ◽  
Connecting Rod ◽  
Single Cylinder ◽  
Considerable Error ◽  
Inertial Coupling ◽  
Single Cylinder Engine ◽  
Crank Angle ◽  
Engine Crankshaft

The inertia due to reciprocating parts and connecting rods, as felt by the crankshaft, varies with the crank angle. The effect of inertia variation on torsional free vibration of crankshafts has been studied extensively. In this paper, the effect on combined torsional and bending free vibrations is examined. Single-cylinder engine crankshaft geometry is considered for the study. The results indicate that the inertial coupling, introduced by the reciprocating parts and connecting rod, significantly influences the free vibration characteristics, particularly when the natural frequencies of the crankskahft are closely spaced. The results suggest that, under such conditions, modeling the crankshaft as a pure torsional system would involve considerable error.

Numerical Analysis of the Piston Crown Geometry Influence on the Tumble and Squish in a Single Cylinder Engine

2014 ◽  
Author(s):  
Marilia Gabriela J. Vaz ◽  
Felipe Grossi L. Amorim ◽  
Jean Helder M. Ribeiro ◽  
Rudolf Huebner ◽  
Ramon Molina Valle
Keyword(s):  
Numerical Analysis ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Piston Crown

A Transient Single Cylinder Test System for Engine Research and Control Development

2005 ◽  
Author(s):  
John L. Lahti ◽  
Matthew W. Snyder ◽  
John J. Moskwa
Keyword(s):  
Test System ◽  
Intake Manifold ◽  
Test Accuracy ◽  
Test Configuration ◽  
Single Cylinder ◽  
Cylinder Test ◽  
Single Cylinder Engine ◽  
Wide Range ◽  
Reduce Development Time ◽  
High Bandwidth

A transient test system was developed for a single cylinder research engine that greatly improves test accuracy by allowing the single cylinder to operate as though it were part of a multi-cylinder engine. The system contains two unique test components: a high bandwidth transient hydrostatic dynamometer, and an intake airflow simulator. The high bandwidth dynamometer is used to produce a speed trajectory for the single cylinder engine that is equivalent to that produced by a multi-cylinder engine. The dynamometer has high torque capacity and low inertia allowing it to simulate the speed ripple of a multi-cylinder engine while the single cylinder engine is firing. Hardware in loop models of the drivetrain and other components can be used to test the engine as though it were part of a complete vehicle, allowing standardized emissions tests to be run. The intake airflow simulator is a specialized intake manifold that uses solenoid air valves and a vacuum pump to draw air from the manifold plenum in a manner that simulates flow to other engine cylinders, which are not present in the single cylinder test configuration. By regulating this flow from the intake manifold, the pressure in the manifold and the flow through the induction system are nearly identical to that of the multi-cylinder application. The intake airflow simulator allows the intake runner wave dynamics to be more representative of the intended multi-cylinder application because the appropriate pressure trajectory is maintained in the intake manifold plenum throughout the engine cycle. The system is ideally suited for engine control development because an actual engine cylinder is used along with a test system capable of generating a wide range of transient test conditions. The ability to perform transient tests with a single cylinder engine may open up new areas of research exploring combustion and flow under transient conditions. The system can also be used for testing the engine under conditions such as cylinder deactivation, fuel cut-off, and engine restart. The improved rotational dynamics and improved intake manifold dynamics of the test system allow the single cylinder engine to be used for control development and emissions testing early in the engine development process. This can reduce development time and cost because it allows hardware problems to be identified before building more expensive multi-cylinder engines.

Laser-Spark Ignition Testing in a Natural Gas-Fueled Single-Cylinder Engine

2004 ◽  
Author(s):  
Michael McMillian ◽  
Steven Richardson ◽  
Steven D. Woodruff ◽  
Dustin McIntyre
Keyword(s):  
Natural Gas ◽  
Spark Ignition ◽  
Single Cylinder ◽  
Single Cylinder Engine ◽  
Laser Spark ◽  
Gas Fueled ◽  
Laser Spark Ignition

scholarly journals Numerical Analysis of Diesel Engine with Modified Inlet Valve

2019 ◽  
Vol 8 (6) ◽  
pp. 2378-2380
Keyword(s):  
Numerical Analysis ◽  
Combustion Engine ◽  
Air Flow ◽  
Valve Lift ◽  
Intake Manifold ◽  
Compression Ignition Engine ◽  
Inlet Valve ◽  
Complete Combustion ◽  
Single Cylinder ◽  
Flow Motion

The Internal combustion engine is one of the widely used mechanical system. The primary aspect of all types of engines is the amount of power produced which, is affected by the complete combustion of a mixture of air and fuel. The objective of this present work is to outline the improved performance of single-cylinder Compression Ignition engine with the aid of geometrical modifications of Inlet manifold. The Study is performed on Kirlosakr CI engine. For modeling of engine assembly, CATIA V5 Software has been used. The Numerical simulations are performed with Ansys 14.5 and solver used as CFX. In this work, two different engine models such as Conventional valve and Modified valve with plate is being considered for CFD analysis. The simulation study of air flow motion with a valve lift of 4 mm, 6 mm and 8 mm is performed for both valve configurations. This numerical analysis aims to maximize the air velocity in the inlet valve with minimum turbulence which in turn improves the engine performance. The study is performed on the single cylinder four-stroke variable compression ratio diesel engines. In the present study, the air flow motion inside the intake manifold of an engine is simulated and investigations are performed by considering the six conditions of the intake valve. The results obtained acts as a basis for further investigation of a variety of valve geometry.

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