Valve control system
US5660153A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Mar 28, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2820/031
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve control system for an internal combustion engine, which is particularly adapted for selectively actuating and deactuating an engine valve. The system includes an inner rocker arm which contacts the cam and an outer rocker arm which engages the valve, the inner and outer arms being in nesting relation to one another and in pivotal contact with the output plunger of a stationary lash adjuster. A sliding latch member is movable between an active position wherein the inner and outer arms are effectively latched together to transmit the force of the cam through the inner and outer arms to the valve, and an inactive position wherein the inner and outer arms are free to move relative to one another. A spring acting between the inner and outer arms biases the inner arm into engagement with the cam and the outer arm, and the outer arm into engagement with the valve and the lash adjuster. Positive stops between the inner and outer arms are effective to limit lash adjuster leak down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.