Title:
Engine cam journal Lubricating oil supply mechanism
Document Type and Number:
Japanese Patent JP6327281
Kind Code:
B2
Abstract:
An oil supply path passes through members separate from a cylinder head (4) to supply a lubricant to bearings (73, 74) of camshaft journals. The oil supply path includes an oil supply passage (66) for the camshaft above the camshaft (19, 20), a connection passage (64) for the camshaft between the oil supply passage for the camshaft and an internal passage (61, 62) in the cylinder head (4), and branch oil passages (68) for the camshaft journals. Each branch oil passage branches off from the oil supply passage for the camshaft, and is connected to one of the bearings (73, 74) from above. Each of the branch passages includes a throttle (168) with a smaller cross-sectional flow area than the oil supply passage for the camshaft.
Inventors:
Naoshi Kashihara
Tsuyoshi Yamamoto
Yasushi Nakahara
Koichi Shimizu
Tsuyoshi Yamamoto
Yasushi Nakahara
Koichi Shimizu
Application Number:
JP2016069673A
Publication Date:
May 23, 2018
Filing Date:
March 30, 2016
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F01M1/06; F01M9/10
Domestic Patent References:
| JP10148113A | ||||
| JP5209507A | ||||
| JP63123710U | ||||
| JP4022702A | ||||
| JP4113717U | ||||
| JP2015028328A |
Foreign References:
| US20110220049 | ||||
| DE4314183A1 |
Attorney, Agent or Firm:
Maeda patent office