Mechanical vacuum pump integrated with coupled secondary air injection valve
US8516803B2 · kind B2 · utility
0Cited by
19References
13Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 27, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Feb 29, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A mechanical vacuum pump for an engine includes a flange configured for attachment to a cylinder head of the engine. The flange defines a bore, which is configured for interconnecting an injection air inlet in the cylinder head with an injection air outlet of a secondary air injection valve. The secondary air injection valve is directly mounted to the mechanical vacuum pump, thereby indirectly mounting the secondary air injection valve to the cylinder head of the engine, with the bore communicating fresh air from the secondary air injection valve to the cylinder head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.