Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Reexamination Certificate
2009-01-23
2010-12-07
McMahon, M. (Department: 3741)
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
C123S573000
Reexamination Certificate
active
07845342
ABSTRACT:
A crankcase that is provided in an internal combustion engine, in which blow-by gas is returned to an intake passage via a gas outflow passage formed in a cylinder block so as to extend in a direction from an upper portion to a lower portion of the cylinder, includes: a partition wall extending in a direction from an upper portion to a lower portion of the crankcase and facing an inner side surface of a crankcase outer wall that also extends in the direction from the upper portion to the lower portion of the crankcase; an internal space that is formed between the partition wall and the inner side surface of the crankcase outer wall and connected to the gas outflow passage at an upper end of the internal space; and a window that is formed on the partition wall to communicate an inside and outside of the internal space.
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Iwata Yasushi
Terada Tatsuhiro
McMahon M.
Sughrue & Mion, PLLC
Toyota Jidosha & Kabushiki Kaisha
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