Title:
VARIABLE VALVE DEVICE
Document Type and Number:
Japanese Patent JP2017180403
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a variable valve device capable of improving durability of a lead groove by smoothly and properly shifting a cam carrier by optimizing the shape of the lead groove for shifting the cam carrier between accelerating rotation and decelerating rotation of the cam carrier.SOLUTION: In a variable valve device including a cam carrier (43) which is a cylindrical member axially slidably fitted to an outer periphery of a cam shaft (42) while prohibited in relative rotation, provided with a plurality of cam lobes (43A, 43B) of different cam profiles, formed on an outer peripheral face in a state of being axially adjacent to each other, and further provided with lead grooves (44) engaged with switching pins (73, 74), an acceleration-side lead groove (44l) for switching from a low speed-side cam lobe (43A) to a high speed-side cam lobe (43B), and a deceleration-side lead groove (44r) for switching from the high speed-side cam lobe (43B) to the low speed-side cam lobe (43A) have the groove shapes different from each other.SELECTED DRAWING: Figure 19
Inventors:
TAKADA YOSHIHIRO
KATAOKA MASARU
KATAOKA MASARU
Application Number:
JP2016071903A
Publication Date:
October 05, 2017
Filing Date:
March 31, 2016
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
F01L13/00; F01L1/04
Domestic Patent References:
| JP4330618B2 | 2009-09-16 | |||
| JP2016017451A | 2016-02-01 | |||
| JP2002256833A | 2002-09-11 | |||
| JP4330618B2 | 2009-09-16 | |||
| JP2016017451A | 2016-02-01 | |||
| JP2002256833A | 2002-09-11 |
Foreign References:
| US20150233272A1 | 2015-08-20 | |||
| US20150233272A1 | 2015-08-20 |
Attorney, Agent or Firm:
Junko Kanzawa
Nozomi Gangwon
Nakamura Kun
Nozomi Gangwon
Nakamura Kun