Title:
METALLIC HOLLOW VALVE
Document Type and Number:
Japanese Patent JP2014169696
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To properly cool, in particular, a hollow valve (1) so as to increase a knocking limit of an internal combustion engine, as a result.SOLUTION: A metallic hollow valve (1) of an internal combustion engine includes a cylindrical shaft (2) having a cavity (5), and a valve head (3) connected to the cylindrical shaft (2). An outer diameter dof the shaft (2) is 5.0 mm or more and 6.0 mm or less, and an inner diameter dof the shaft is 3.0 mm or more and 4.6 mm or less. The valve head (3) is provided with a cavity (4), and thicknesses band bof a wall surrounding the cavity (4) are respectively 1.0 mm or more and 2.0 mm or less.
Inventors:
PETER KROOS
CHRISTOPH LUVEN
ROLAND SCHACHERER
CHRISTOPH LUVEN
ROLAND SCHACHERER
Application Number:
JP2014030232A
Publication Date:
September 18, 2014
Filing Date:
February 20, 2014
Export Citation:
Assignee:
MAHLE INT GMBH
International Classes:
F01L3/20; F01L3/02; F01L3/24
Domestic Patent References:
| JP5148609B2 | 2013-02-20 | |||
| JPH03264714A | 1991-11-26 | |||
| JP2005195021A | 2005-07-21 | |||
| JP2004306119A | 2004-11-04 | |||
| JPS56121803A | 1981-09-24 |
Attorney, Agent or Firm:
Patent business corporation MAEDA PATENT OFFICE