Title:
ENGINE LUBRICATING STRUCTURE FOR OUTBOARD MOTOR
Document Type and Number:
Japanese Patent JP2970079
Kind Code:
B2
Abstract:
PURPOSE: To provide an engine lubricating structure for an outboard motor which can obtain a satisfactory lubricating condition meeting to a large output by improving an oil discharging ability of a crank chamber while eliminating rotational friction of a crank shaft, and supplying a large amount of lubricating oil to each part of the engine, particulariy to a valve system.
CONSTITUTION: In an engine lubricating structure of an outboard motor, an oil collecting chamber 65 is formed by partitioning one space in a water jacket 52 around a lowermost cylinder 23d by means of a partition wall 64. The oil collecting chamber 65 is opened to a lowermost crank chamber 19d and an oil pan 12, and thereby a crank chamber main oil discharge passage 27 is formed. A crank chamber side opening 66 of the oil collecting chamber 65 is formed on a portion where lubricating oil sprashed by a centrifugal force of a lowermost crank wheel is collected. Crank chamber sub-oil discharge passages 28, 29 are provided for penetrating an oil pump 53 arranged between an engine 5 and an engine holder 3, and a left side mount bracket 57, for instance, and for communicating the lowermost crank chamber 19d with the oil pan 12.
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Inventors:
OOTA MITSUHIKO
SHIBANUMA HIDEYUKI
DAIKOKU KEISUKE
SHIBANUMA HIDEYUKI
DAIKOKU KEISUKE
Application Number:
JP16170591A
Publication Date:
November 02, 1999
Filing Date:
July 02, 1991
Export Citation:
Assignee:
SUZUKI KK
International Classes:
B63H20/00; F01M1/06; F01M9/10; F02B61/04; F02B67/00; (IPC1-7): F01M1/06; B63H20/00; F01M9/10; F02B67/00
Domestic Patent References:
| JP58178819A | ||||
| JP454910U |
Attorney, Agent or Firm:
Hisano Hatano (1 person outside)