| US 7,506,629 B2 | ||
| Oil return structure for internal combustion engine | ||
| Hiroshi Kawamura, Okazaki (Japan); Akihiro Ikeda, Nagoya (Japan); and Ted Haladyna, Northville, Mich. (US) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota (Japan) | ||
| Filed on Jul. 06, 2007, as Appl. No. 11/822,513. | ||
| Claims priority of application No. 2006-190637 (JP), filed on Jul. 11, 2006. | ||
| Prior Publication US 2008/0011264 A1, Jan. 17, 2008 | ||
| Int. Cl. F02F 7/00 (2006.01) | ||
| U.S. Cl. 123—195C [123/572] | 8 Claims |
| 1. An oil return structure for an internal combustion engine, comprising:
an oil pan located below a crankcase of the internal combustion engine;
an oil return passage provided in the crankcase for returning oil from an upper part of the internal combustion engine into
the oil pan; and
an oil reservoir formed in an upper part of the oil pan, wherein
the oil return passage has a downstream end located within the oil reservoir, the oil reservoir protrudes inward of an inner
wall surface of a lower part of the oil pan, an oil discharge hole is formed on a bottom surface of the oil reservoir at an
inwardly protruding portion of the oil reservoir, and the oil reservoir communicates through the oil discharge hole with a
space defined by the lower part of the oil pan.
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