Development of Indigenous Methodology for Design and Dynamic Analysis of Engine Valve Train System with Timing Chain Drive for High Speed Applications

2015 ◽  
Author(s):  
Rakesh Mulik ◽  
Sushil S Ramdasi
Keyword(s):  
Dynamic Analysis ◽  
High Speed ◽  
Valve Train ◽  
Chain Drive ◽  
Indigenous Methodology ◽  
Engine Valve ◽  
Train System

Dynamic analysis of a car engine valve train system

2016 ◽  
Vol 12 (3) ◽  
pp. 229 ◽  
Author(s):  
Enrico Armentani ◽  
Francesco Sbarbati ◽  
Michele Perrella ◽  
Roberto Guglielmo Citarella
Keyword(s):  
Dynamic Analysis ◽  
Valve Train ◽  
Engine Valve ◽  
Train System

Dynamic analysis of a car engine valve train system

2016 ◽  
Vol 12 (3) ◽  
pp. 229 ◽  
Author(s):  
Michele Perrella ◽  
Francesco Sbarbati ◽  
Enrico Armentani ◽  
Roberto Guglielmo Citarella
Keyword(s):  
Dynamic Analysis ◽  
Valve Train ◽  
Engine Valve ◽  
Train System

scholarly journals Dynamic Analysis of a High-Speed Railway Train With the Defective Axle Bearing

2020 ◽  
Vol 25 (4) ◽  
pp. 525-531
Author(s):  
Jing Liu ◽  
Shangkun Du
Keyword(s):  
Dynamic Analysis ◽  
High Speed ◽  
Time Dependent ◽  
Force Model ◽  
High Speed Railway ◽  
The Road ◽  
Reasonable Approach ◽  
Simulation Results ◽  
Train System ◽  
Track Irregularities

Axle bearings (AXBs) are critical parts for high-speed railway trains (HSTs). Local faults in the AXBs have great influences on the operational dynamics of HSTs. Although some previous works formulated the local faults in single AXB, the vibrations of the whole train system with the defective AXB cannot be described. To overcome this problem, this study conducts a dynamic model for a HST considering a local fault in one AXB. The previous single AXB model cannot formulate the studied case. The impacts caused by the fault in the AXB is defined as a time-dependent force model considering a half-sine type. The road spectrum excitations from the roadbed and rail are formulated by a track irregularities model. The effects of the train speeds and fault sizes on the HST dynamics are introduced. The simulation results from the proposed and previous works are contrasted to show the model validation. The results show that the faults in the AXB will greatly affect the HST dynamics. It depicts that this study can afford a more reasonable approach for understanding the dynamics of HSTs considering the defective AXBs compared to the reported single AXB model.

A Dynamic Analysis of the Oscillations in a Chain Drive

1999 ◽  
Vol 123 (3) ◽  
pp. 395-401 ◽  
Author(s):  
I. Troedsson ◽  
L. Vedmar
Keyword(s):  
Dynamic Analysis ◽  
Equilibrium Condition ◽  
High Speed ◽  
Transverse Oscillation ◽  
Chain Drive ◽  
Equilibrium Equations ◽  
Gravitational Forces ◽  
Geometric Conditions ◽  
A Chain ◽  
Inertia Forces

A model is presented in which the oscillations, and the forces thus produced, in a chain drive, working at moderate and high speed, can be calculated. Since the outer system affects the result it has been necessary to include this in the model. The mass of the chain is included in the model and both the gravitational forces and the inertia forces in the chain are taken into account. The elasticity in the links is included. The sprockets are connected by two spans, both of which have to be included in the model to fulfill the equilibrium equations for the rollers in contact with the sprockets. The position of the chain is given by the geometric conditions as well as the equilibrium condition. On the slack side a chain tensioner is used to reduce the transverse oscillation, which occur at higher speeds.

Engine Valve Motion Simulated with Mechanical Dynamics

2012 ◽  
Vol 164 ◽  
pp. 429-432
Author(s):  
Zong Zheng Ma ◽  
Xin Li Wang
Keyword(s):  
High Frequency ◽  
Valve Train ◽  
Motion Simulation ◽  
Engine Valve ◽  
Valve System ◽  
Valve Motion ◽  
Mechanical Dynamics ◽  
The Impact ◽  
Train System

One of the important methods for studying the valve train system is simulation. So the feasibility of valve motion simulation by Pro/E is discussed in this paper. After model establishing and connection completing, the valve motion is simulated and some results are reached. It can be seen from the results that valve motion can be simulated based on Pro/E environment. It also be seen that the valve acceleration varied at high frequency and the impact between the valve and seat is existed for the studied valve system. For studied valve it meets the demand of the engine

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