Multiple rocker arm valve control system
US5529033A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | May 26, 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. The system includes an outer rocker arm which is engageable with an engine poppet valve, and an inner rocker arm which is engageable with a cam lobe formed in the engine camshaft. The rocker arms are moveable axially relative to one another between a first position wherein the inner rocker arm engages the outer rocker arm to transmit a valve opening force from the camshaft to the poppet valve, and a second position wherein the inner and outer rocker arms are out of engagement and free to rotate relative to one another. The system is adapted for use in a valve train wherein the poppet valve remains closed when the inner and outer rocker arms are in their second position or in a valve train wherein the popper value is opened in response to a first cam lobe profile when the inner and outer rocker arms are in their first position and in response to a second cam lobe profile when they are in their second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.