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008 090723t2008 my a f m 000 0 eng|d
020 _aTHE0006306(Local)
039 9 _a201905161445
_baida
_c201107132231
_dVLOAD
_c200908141650
_dVLOAD
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_y200907230937
_zida84
040 _aUMP
090 _aTJ774 .S85 2008 rs Bc.
100 0 _aSulaiman Alias
245 1 0 _aDesign analysis of a piston for compressed natural gas (CNG) engine /
_cSulaiman Alias
246 3 _aDesign analysis of a piston for compressed natural gas (CNG) engine
_h[electronic resource]
260 _aKuantan, Pahang :
_bUMP,
_c2008
300 _a49 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Mechanical Engineering with Automotive) -- Universiti Malaysia Pahang - 2008
520 3 _aEngine pistons are one of the most complex components among all automotive or other industry field components. The engine can be called the heart of a car and the piston may be considered the most important part of an engine. There are lots of research works proposing for engine pistons, new geometries, materials and manufacturing techniques, and this evolution has undergone with a continuous improvement over the last decades and required thorough examination of the smallest details. Notwithstanding all these studies, there is huge number of damaged pistons. Damage mechanisms have different origins and are mainly wear, temperature, and fatigue related. Among the fatigue damages, thermal fatigue and mechanical fatigue, either at room or at high temperature, play a prominent role. This work is concerned only with the analysis of fatigue-damaged pistons. Pistons from diesel engines will be analyzed. Damages initiated at the crown, ring grooves, pin holes and skirt are assessed. A compendium of case studies of fatigue-damaged pistons is presented. An analysis of both thermal fatigue and mechanical fatigue damages is presented and analyzed in this work. A linear static stress analysis, using “Algor works”, is used to determine the stress distribution during the combustion. Stresses at the piston crown and pin holes, as well as stresses at the grooves and skirt as a function of land clearances are also presented. A fractographic study is carried out in order to confirm crack initiation sites.
650 0 _aInternal combustion engines
650 0 _aPistons
999 _aVIRTUA40
_c1499
_d1505
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*9992