Modeling, Validation and Dynamic Analysis of Diesel Pushrod Overhead Bridged Valve Train

2007 ◽  
Author(s):  
Tao (Tom) Xu ◽  
Chungyao (Alex) Tang ◽  
Huihua (Harry) Shen ◽  
Michael King ◽  
Mark Nowak ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Valve Train

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

Valve Train Dynamic Analysis and Digital Data Based Manufacturing of the Valve Spring

2005 ◽  
Author(s):  
Takashi Gotoh ◽  
Yoichi Takashima ◽  
Takuo Mizuno ◽  
Masami Wakita ◽  
Keiji Hasegawa
Keyword(s):  
Dynamic Analysis ◽  
Valve Train ◽  
Digital Data ◽  
Valve Spring

A NUMERICAL APPROACH TO CALCULATE CREEP IN ROLLER FOLLOWER VALVE TRAIN BASING ON FRICTION AND LUBRICATION MODELING

2015 ◽  
Vol 39 (4) ◽  
pp. 805-818 ◽  
Author(s):  
Muhammad Khurram ◽  
Riaz Ahmad Mufti ◽  
Muhammad Usman Bhutta ◽  
Yousaf Habib ◽  
Arslan Ahmed ◽  
...  
Keyword(s):  
Film Thickness ◽  
Dynamic Analysis ◽  
Numerical Approach ◽  
Mixed Lubrication ◽  
Valve Train ◽  
Normal Loading ◽  
Oil Film ◽  
Tangential Forces ◽  
Motion Parameters ◽  
Friction And Lubrication

A numerical approach basing on friction and lubrication analysis has been developed to determine the creep at cam/roller interface in end pivoted roller finger follower valve train. The kinematic and dynamic analysis at the geometrical mating surfaces of cam and roller follower has been carried out to predict the required instantaneous motion parameters and normal loading whereas the oil film thickness is determined using lubrication analysis. The tangential forces have been computed precisely using elastohydrodynamic and mixed lubrication concept for a complete cam cycle. At low camshaft operating speeds, the creep proves to be low whereas the creep increases significantly under the influence of high tangential loading at higher operating speeds.

Dynamics Analysis and Cam Profile Optimal Design of the Valve Train in the Diesel Engine with High Specific Power

2011 ◽  
Vol 308-310 ◽  
pp. 1636-1640 ◽  
Author(s):  
Li Wei Sun ◽  
Tie Xiong Su ◽  
Jun Feng Xu ◽  
Qiang Wang ◽  
Chun Long Xu ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Optimal Design ◽  
Dynamic Analysis ◽  
Process Simulation ◽  
Valve Train ◽  
Specific Power ◽  
Intake Port ◽  
Working Process ◽  
High Specific Power ◽  
Cam Profile

The study carries out optimal design for the cam profile of the valve train in a high-specific-power diesel engine. The dynamic analysis on the original cam reveals that the original one, which leads to adequate fullness coefficient, is designed far from the material margins. The fullness coefficient and time area value are selected as the optimization objective, and the piecewise fucntion method is utilized to optimally design the cam profile. The restrictive contidons are applied to each section on the cam. Thus the function and the optimal coeficients are obtained. Then the dynamic analysis and working process simulation on the optimal valve train are carried out, and it proves that the dynamic and intake port performaces of the optimized one are greatly impoved.

Parametric Design with Valve Train Dynamic Analysis and Digital Data Based Manufacturing of the Valve Spring

2005 ◽  
Author(s):  
Yoichi Takashima ◽  
Takuo Mizuno ◽  
Takashi Goto ◽  
Masami Wakita ◽  
Keiji Hasegawa
Keyword(s):  
Dynamic Analysis ◽  
Parametric Design ◽  
Valve Train ◽  
Digital Data ◽  
Valve Spring
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