B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 17/00 (2006.01) B22D 17/22 (2006.01) F16H 61/00 (2006.01)
Patent
CA 2566100
By pouring, by means of pressure, melted liquid of magnesium or magnesium alloy into a hollow portion which is formed using a casting mold, a valve body where a channel groove for hydraulic oil for use in a speed change operation of the automatic transmission is formed. In the above, the channel grove for the hydraulic oil is formed due to a convex portion which is formed on the mold so as to project into the hollow portion. As the magnesium has small heat capacity, variation of the temperature of the mold during the cooling and heating cycle can be suppressed. Moreover, as the magnesium melted liquid has no reactivity with respect to the casting mold, the convex portion is not deteriorated. This allows employment of a mold having a thinner convex portion formed thereon, and therefore formation of a valve body having a narrower channel groove.
Il est prévu un corps de soupape dans lequel sont formées des rainures d'écoulement pour huile hydraulique servant au changement de vitesses d'une boîte automatique entre des cloisons de séparation en injectant de force du magnésium fondu ou un alliage de magnésium dans une partie creuse formée par un moule. Dans ce processus, les rainures d'écoulement sont formées par des saillies prévues sur le moule et saillant dans la partie creuse. Comme la capacité thermique du magnésium est faible, l'étendue de variation de température du moule dans un cycle thermique peut être rétrécie, et, en outre le magnésium n'a aucune réactivité avec le moule. En conséquence, l'épaisseur des saillies sur le moule peut être réduite sans endommager les parties saillantes.
Aoyama Toshihiro
Itou Shinichi
Kitano Tomoyasu
Murakami Akira
Gowling Lafleur Henderson Llp
Toyota Jidosha Kabushiki Kaisha
LandOfFree
Control valve body of automatic transmission and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control valve body of automatic transmission and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control valve body of automatic transmission and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1883862