Title:
LUBRICATING DEVICE FOR FOUR-CYCLE ENGINE
Document Type and Number:
Japanese Patent JP3133983
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricating device in a four-cycle engine, which can ensure operation of intake valves having a number larger than that of exhaust valve.
SOLUTION: In a lubricating device in a four-cycle engine, a number of an exhaust cams are greater than that of exhaust cams in order to operate intake valves having a number greater than that of exhaust valves, and a number of intermediate bearing parts 45 of an intake cam shaft, for the intake valves, is greater than intermediate bearing parts 45 of an exhaust cam shaft, for the exhaust cams. The intermediate bearing parts 45 of the intake cam shaft and the intermediate bearing parts 45 of the exhaust cam shaft are adjacently located respectively between intake cams 26 and exhaust cams 27.
Inventors:
Tetsushi Saito
Application Number:
JP19652198A
Publication Date:
February 13, 2001
Filing Date:
June 29, 1998
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
F01M1/06; F01L1/04; F01L1/26; F01M9/10; F02F1/24; (IPC1-7): F01M1/06; F01L1/04; F01L1/26; F01M9/10; F02F1/24
Domestic Patent References:
| JP58113512A | ||||
| JP63171608U |
Attorney, Agent or Firm:
Kotaro Hori (1 person outside)
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