Electro-hydraulic control module for deactivating intake and exhaust valves
US6481409B1 · kind B1 · utility
10Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | May 1, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/2444
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electro-hydraulic control module for deactivating and reactivating intake and exhaust valves in an internal combustion engine comprising a series of stacked plates that form hydraulic valves, manifolding for supply, control and exhaust hydraulic flow and supports electromagnetic solenoids for activating the hydraulic valves. The plate structure is economical to manufacture and is advantageously small in vertical size. A bleed circuit keeps the hydraulic system relatively free of air to achieve fast, reliable and repeatable performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.