Title:
4サイクル内燃機関用冷却装置
Document Type and Number:
Japanese Patent JP4545361
Kind Code:
B2
Abstract:
The present invention relates to a cooling system for an OHC type four-stroke cycle internal combustion engine in which a valve chamber is lubricated by oil mist. This cooling system includes an accommodating space accommodating a transmission mechanism for transmitting the rotational movement of a crankshaft to a camshaft in the valve chamber, a blower fan rotatably driven by the crankshaft, and a cooling air channel extending between a combustion chamber and the valve chamber disposed above the combustion chamber. The cooling air channel includes a primary air channel formed between intake and exhaust ports. The cooling air channel extends toward a spark plug located on the downstream side of the cooling air channel. The cooling air channel also includes an air guide channel for guiding the air to an upstream inlet of the primary air channel. The air guide channel is defined by a wall which faces the upstream inlet of the primary air channel and extends laterally. The wall extends vertically in the accommodating space. Further, the wall is formed with an oil mist passage extending vertically therein.
Inventors:
Liu Yimin
Application Number:
JP2001283087A
Publication Date:
September 15, 2010
Filing Date:
September 18, 2001
Export Citation:
Assignee:
Yamabiko Co., Ltd.
International Classes:
F01M1/04; F01P5/06; F01M5/00; F01P1/02; F02B63/02; F02B75/16; F02F1/06; F02F1/20; F02F1/34; F01M9/10; F01P1/08; F01P1/10; F01P5/02; F02B75/02
Domestic Patent References:
| JP3168140B2 | ||||
| JP10246106A | ||||
| JP11036860A | ||||
| JP1166216U |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Ino Sato
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Ino Sato