Abstract
Large static strain appears on the fillet on upper deck of diesel engine cylinder block by tightening force of cylinder head bolts. Reducing static strain is necessary to avoid the crack initiation on the fillet. The static strain along the fillet can be reduced, for example, by modifying the depth of thread engagement, and modifying the bead shape and position into the bore grommet of cylinder head gasket. In the present study, the depth of thread engagement was optimized considering four conditions, the overall magnitude of strain, the circumferential fluctuation of strain, the change rate of strain against the depth of thread engagement, and the length of cylinder head bolt. The bead shape or position was optimized considering two conditions, the overall magnitude of strain, and the distribution of contact pressure on the contact area with the cylinder block and the cylinder liner. The analysis results of the circumferential distribution of static strain were agreed with the measurement results. The optimum depth of thread engagement of cylinder head bolt and the optimum type of the cylinder head gasket were evaluated using FEM.
| Original language | English |
|---|---|
| Title of host publication | 12th International Conference on Fracture 2009, ICF-12 |
| Pages | 787-796 |
| Number of pages | 10 |
| Volume | 1 |
| Publication status | Published - 2009 |
| Event | 12th International Conference on Fracture 2009, ICF-12 - Ottawa, ON, Canada Duration: Jul 12 2009 → Jul 17 2009 |
Other
| Other | 12th International Conference on Fracture 2009, ICF-12 |
|---|---|
| Country | Canada |
| City | Ottawa, ON |
| Period | 7/12/09 → 7/17/09 |
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Keywords
- Cylinder block
- Diesel engine
- Finite element method
- Fixing
- Optimum design
- Stress concentration
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
Cite this
Numerical study on reducing methods of static strain along the fillet on upper deck of diesel engine cylinder block. / Iguchi, Katsuyuki; Tada, Naoya; Shimizu, Ichiro; Iwasaki, Kouji.
12th International Conference on Fracture 2009, ICF-12. Vol. 1 2009. p. 787-796.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Numerical study on reducing methods of static strain along the fillet on upper deck of diesel engine cylinder block
AU - Iguchi, Katsuyuki
AU - Tada, Naoya
AU - Shimizu, Ichiro
AU - Iwasaki, Kouji
PY - 2009
Y1 - 2009
N2 - Large static strain appears on the fillet on upper deck of diesel engine cylinder block by tightening force of cylinder head bolts. Reducing static strain is necessary to avoid the crack initiation on the fillet. The static strain along the fillet can be reduced, for example, by modifying the depth of thread engagement, and modifying the bead shape and position into the bore grommet of cylinder head gasket. In the present study, the depth of thread engagement was optimized considering four conditions, the overall magnitude of strain, the circumferential fluctuation of strain, the change rate of strain against the depth of thread engagement, and the length of cylinder head bolt. The bead shape or position was optimized considering two conditions, the overall magnitude of strain, and the distribution of contact pressure on the contact area with the cylinder block and the cylinder liner. The analysis results of the circumferential distribution of static strain were agreed with the measurement results. The optimum depth of thread engagement of cylinder head bolt and the optimum type of the cylinder head gasket were evaluated using FEM.
AB - Large static strain appears on the fillet on upper deck of diesel engine cylinder block by tightening force of cylinder head bolts. Reducing static strain is necessary to avoid the crack initiation on the fillet. The static strain along the fillet can be reduced, for example, by modifying the depth of thread engagement, and modifying the bead shape and position into the bore grommet of cylinder head gasket. In the present study, the depth of thread engagement was optimized considering four conditions, the overall magnitude of strain, the circumferential fluctuation of strain, the change rate of strain against the depth of thread engagement, and the length of cylinder head bolt. The bead shape or position was optimized considering two conditions, the overall magnitude of strain, and the distribution of contact pressure on the contact area with the cylinder block and the cylinder liner. The analysis results of the circumferential distribution of static strain were agreed with the measurement results. The optimum depth of thread engagement of cylinder head bolt and the optimum type of the cylinder head gasket were evaluated using FEM.
KW - Cylinder block
KW - Diesel engine
KW - Finite element method
KW - Fixing
KW - Optimum design
KW - Stress concentration
UR - http://www.scopus.com/inward/record.url?scp=84869768485&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869768485&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781617382277
VL - 1
SP - 787
EP - 796
BT - 12th International Conference on Fracture 2009, ICF-12
ER -