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Metal gasket for chain casing engines
Webwatch a t u r e , gave a 1.3 m m g a s k e t w i t h l o n g i t u d i n a l t e n s i l e s t r e n g t h of i 0 0 4 0 0 _+ 1300 KPa, a n d a m o d u l u s of 1 757 0 0 0 _+ 170 700 KPa.
Metal gasket for cha.m casing engines Figure 4. Rolling the expanded PTFE o n t o itself is judged to improve its gasketing properties.
Patent number: E P 0 7 0 1 0 5 1 Publication date: 13 March 1996 Inventors: K Kubouchi, Y Fukui, K Inoue Applicant: Nippon Gasket
S a m p l e s of 2.1 m m d i a m e t e r g a s k e t m a d e u s i n g 14:1 e x p a n d e d m i c r o p o r o u s PTFE s h e e t gave a l o n g i t u d i n a l s t r e n g t h of 39 0 5 0 _+ 8 3 4 KPa, a n d a m o d u l u s of 4 0 3 700 _+ 42 5 1 0 KPa. A s h e e t of t h e s a m e PTFE m a t e r i a l , w h i c h w a s h e a t treated again at a higher temper-
This invention uses thin laminated m e t a l p l a t e s to s e a l a n a r r o w clearance between opposed surfaces of a c h a i n c a s e - c a r r y i n g c y l i n d e r block and a cylinder head. The g a s k e t p r e v e n t s t h e e n t r y of oil into
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Figure 5. Laminated plates provide the seal between cylinder block and head.
Webwatch
different height parts which occur on a b u t t i n g s u r l a c e s of a c y l i n d e r b l o c k a n d a c h a i n c a s e , even w h e n oil o n t h e c h a i n c a s e s c a t t e r s during operation. Three plates are used and i n c l u d e first a n d s e c o n d e l a s t i c m e t a l p l a t e s , 5 & 7, a n d a n i n t e r m e d i a t e p l a t e , 6, b e t w e e n t h e m (Figure 5). E l a s t i c p l a t e 5 is a b e a d p l a t e p o s i t i o n e d on t h e s i d e of t h e c y l i n d e r h e a d , p l a t e 7 is a s t o p p e r p l a t e p o s i t i o n e d on t h e s i d e of the cylinder block, and the interm e d i a t e p l a t e 6 a c t s to r e g u l a t e t h e tightening thickness. An auxiliary s e a l p o r t i o n of low s e a l s u r f a c e p r e s s u r e is f o r m e d b y e x t e n d i n g a t l e a s t o n e of t h e p l a t e s a s a b a s e m e m b e r a n d t h e n b o n d i n g a soft s h e e t , s u c h a s iS-cellulose, g r a p h i t e or c o m p r e s s e d s h e e t to o n e or b o t h s u r f a c e s of this. In t h i s g a s k e t , a h o l e is f o r m e d a l o n g t h e c i r c u m f e r e n c e of a through b o r e , a n d t h e s e a l m e m b e r is p r o v i d e d on t h e i n n e r s i d e so t h a t p a r t of it p r o j e c t s from t h e hole. A r o u n d t h e bore, t h i s m a i n t a i n s t h e s e a l a b i l i t y of p o r t i o n s of d i f f e r e n t height. In g e n e r a l t h e s e height differences occur when the upper s u r f a c e h e i g h t ol t h e c h a i n c a s e is d i f f e r e n t from t h a t of t h e c y l i n d e r block, l e a d i n g to v a r y i n g s u r f a c e p r e s s u r e s w h i c h c o u l d facilitate l e a k a g e of oil a n d water. T h e g a s k e t effectively p r e v e n t s t h e e n t r y of oil in t h e c h a i n c a s e into a n y c l e a r a n c e b e t w e e n t h e .joint s u r f a c e s
i s o m e t r i c c r o s s - s e c t i o n s of its g a s k e t r a n g e a r e c l e a r a n d well p r e s e n t e d .
EGC Enterprises h t t p : / / w w w . egc- ent. corn / egc / h o m e . h t m l E G C ' s a n i m a t e d b e a v e r w e l c o m e s y o u to its high t e c h fluid s e a l i n g p r o d u c t s site. T h e u s u a l c o m p a n y a n d p r o d u c t overviews a r e h e r e , t o g e t h e r w i t h a n u c l e a r p o w e r p l a n t a p p l i c a t i o n s t o r y a n d a clever p r e s s u r e c o n v e r s i o n tool. T h e c h i e f e n g i n e e r a l s o p l a n s to c o n t r i b u t e a c o l u m n r e g u l a r l y , a n d p r o m i s e s n e x t m o n t h to reflect u p o n t h e f u s s over t h e n e w PVRC g a s k e t t i g h t e n i n g p a r a m e t e r s .
Victor Reinz http: //www.dana.com/victor/victor
reinz.html
P r e s e n t e d a s a b r a n c h of p a r e n t c o m p a n y , D a n a C o r p o r a t i o n ' s w e b s i t e , Victor R e i n z ' s h o m e p a g e is good v a l u e . E l a b o r a t e g r a p h i c s s l o w t h e d o w n l o a d s o m e w h a t , b u t o n c e t h e y arrive, t h e c o l o u r f u l
Sealing Technology No. 33
Asia Environmental Review h t t p : / / w w w . a s i a n e n v i r o . corn / A s i a E n v i r o n m e n t a l Review (ASER) is a m o n t h l y p u b l i c a t i o n a n d i n f o r m a t i o n s e r v i c e d e d i c a t e d to t h e e n v i r o n m e n t a l i s s u e a n d a s s o c i a t e d m a r k e t s of t h e A s i a Pacific region. It is o n e of t h e few s o u r c e s of information and analysis covering environmental b u s i n e s s in t h e e n t i r e r e g i o n from J a p a n , C h i n a a n d K o r e a to S o u t h e a s t Asia. T h e w e b s i t e c o n t a i n s c o n d e n s e d h e a d l i n e s a n d a s u m m a r v of d e v e l o p ments within the environmental markets and policy in Asia, t a k e n e a c h m o n t h from t h e j o u r n a l . W h e n v i s i t i n g t h e w e b s i t e y o u c a n d o w n l o a d t h e initial i s s u e of ASER, w h i c h c o n t a i n s a c o m p r e h e n s i v e a c c o u n t of t h e s t a t e of t h e e n v i r o n m e n t a n d r e l a t e d m a r k e t s in e a c h A s i a n c o u n t r y .
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Metal gasket for cha.m casing engines Figure 4. Rolling the expanded PTFE o n t o itself is judged to improve its gasketing properties.
Patent number: E P 0 7 0 1 0 5 1 Publication date: 13 March 1996 Inventors: K Kubouchi, Y Fukui, K Inoue Applicant: Nippon Gasket
S a m p l e s of 2.1 m m d i a m e t e r g a s k e t m a d e u s i n g 14:1 e x p a n d e d m i c r o p o r o u s PTFE s h e e t gave a l o n g i t u d i n a l s t r e n g t h of 39 0 5 0 _+ 8 3 4 KPa, a n d a m o d u l u s of 4 0 3 700 _+ 42 5 1 0 KPa. A s h e e t of t h e s a m e PTFE m a t e r i a l , w h i c h w a s h e a t treated again at a higher temper-
This invention uses thin laminated m e t a l p l a t e s to s e a l a n a r r o w clearance between opposed surfaces of a c h a i n c a s e - c a r r y i n g c y l i n d e r block and a cylinder head. The g a s k e t p r e v e n t s t h e e n t r y of oil into
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17
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6
16
7
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Figure 5. Laminated plates provide the seal between cylinder block and head.
Webwatch
different height parts which occur on a b u t t i n g s u r l a c e s of a c y l i n d e r b l o c k a n d a c h a i n c a s e , even w h e n oil o n t h e c h a i n c a s e s c a t t e r s during operation. Three plates are used and i n c l u d e first a n d s e c o n d e l a s t i c m e t a l p l a t e s , 5 & 7, a n d a n i n t e r m e d i a t e p l a t e , 6, b e t w e e n t h e m (Figure 5). E l a s t i c p l a t e 5 is a b e a d p l a t e p o s i t i o n e d on t h e s i d e of t h e c y l i n d e r h e a d , p l a t e 7 is a s t o p p e r p l a t e p o s i t i o n e d on t h e s i d e of the cylinder block, and the interm e d i a t e p l a t e 6 a c t s to r e g u l a t e t h e tightening thickness. An auxiliary s e a l p o r t i o n of low s e a l s u r f a c e p r e s s u r e is f o r m e d b y e x t e n d i n g a t l e a s t o n e of t h e p l a t e s a s a b a s e m e m b e r a n d t h e n b o n d i n g a soft s h e e t , s u c h a s iS-cellulose, g r a p h i t e or c o m p r e s s e d s h e e t to o n e or b o t h s u r f a c e s of this. In t h i s g a s k e t , a h o l e is f o r m e d a l o n g t h e c i r c u m f e r e n c e of a through b o r e , a n d t h e s e a l m e m b e r is p r o v i d e d on t h e i n n e r s i d e so t h a t p a r t of it p r o j e c t s from t h e hole. A r o u n d t h e bore, t h i s m a i n t a i n s t h e s e a l a b i l i t y of p o r t i o n s of d i f f e r e n t height. In g e n e r a l t h e s e height differences occur when the upper s u r f a c e h e i g h t ol t h e c h a i n c a s e is d i f f e r e n t from t h a t of t h e c y l i n d e r block, l e a d i n g to v a r y i n g s u r f a c e p r e s s u r e s w h i c h c o u l d facilitate l e a k a g e of oil a n d water. T h e g a s k e t effectively p r e v e n t s t h e e n t r y of oil in t h e c h a i n c a s e into a n y c l e a r a n c e b e t w e e n t h e .joint s u r f a c e s
i s o m e t r i c c r o s s - s e c t i o n s of its g a s k e t r a n g e a r e c l e a r a n d well p r e s e n t e d .
EGC Enterprises h t t p : / / w w w . egc- ent. corn / egc / h o m e . h t m l E G C ' s a n i m a t e d b e a v e r w e l c o m e s y o u to its high t e c h fluid s e a l i n g p r o d u c t s site. T h e u s u a l c o m p a n y a n d p r o d u c t overviews a r e h e r e , t o g e t h e r w i t h a n u c l e a r p o w e r p l a n t a p p l i c a t i o n s t o r y a n d a clever p r e s s u r e c o n v e r s i o n tool. T h e c h i e f e n g i n e e r a l s o p l a n s to c o n t r i b u t e a c o l u m n r e g u l a r l y , a n d p r o m i s e s n e x t m o n t h to reflect u p o n t h e f u s s over t h e n e w PVRC g a s k e t t i g h t e n i n g p a r a m e t e r s .
Victor Reinz http: //www.dana.com/victor/victor
reinz.html
P r e s e n t e d a s a b r a n c h of p a r e n t c o m p a n y , D a n a C o r p o r a t i o n ' s w e b s i t e , Victor R e i n z ' s h o m e p a g e is good v a l u e . E l a b o r a t e g r a p h i c s s l o w t h e d o w n l o a d s o m e w h a t , b u t o n c e t h e y arrive, t h e c o l o u r f u l
Sealing Technology No. 33
Asia Environmental Review h t t p : / / w w w . a s i a n e n v i r o . corn / A s i a E n v i r o n m e n t a l Review (ASER) is a m o n t h l y p u b l i c a t i o n a n d i n f o r m a t i o n s e r v i c e d e d i c a t e d to t h e e n v i r o n m e n t a l i s s u e a n d a s s o c i a t e d m a r k e t s of t h e A s i a Pacific region. It is o n e of t h e few s o u r c e s of information and analysis covering environmental b u s i n e s s in t h e e n t i r e r e g i o n from J a p a n , C h i n a a n d K o r e a to S o u t h e a s t Asia. T h e w e b s i t e c o n t a i n s c o n d e n s e d h e a d l i n e s a n d a s u m m a r v of d e v e l o p ments within the environmental markets and policy in Asia, t a k e n e a c h m o n t h from t h e j o u r n a l . W h e n v i s i t i n g t h e w e b s i t e y o u c a n d o w n l o a d t h e initial i s s u e of ASER, w h i c h c o n t a i n s a c o m p r e h e n s i v e a c c o u n t of t h e s t a t e of t h e e n v i r o n m e n t a n d r e l a t e d m a r k e t s in e a c h A s i a n c o u n t r y .
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