Cooling water passage structure in cylinder head of internal combustion engine
US8904773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2011 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Jul 6, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F1/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cooling water passage structure in a cylinder head of an internal combustion engine includes a first exhaust-side cooling water passage and a second exhaust-side cooling water passage arranged to sandwich an exhaust collecting portion and extending in a lengthwise direction of the cylinder head. An exhaust pipe is fastened to a exhaust-side lateral surface of the cylinder head via a fastening member. A shunt passage is formed in at least one of the first exhaust-side cooling water passage and the second exhaust-side cooling water passage to cool the fastening member and is formed along a water flow in the first exhaust-side cooling water passage or the second exhaust-side cooling water passage by partly expanding the first exhaust-side cooling water passage or the second exhaust-side cooling water passage to increase a passage cross-sectional area of the first exhaust-side cooling water passage or the second exhaust-side cooling water passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.