Valve-moving apparatus for internal combustion engine
US5320082A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1993 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Mar 4, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F7/006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a valve-moving apparatus for an internal combustion engine, cam shafts having a low-speed cam and a high-speed cam and rocker shaft parts are provided; arm parts 33 having rocking ends opposing the intake valve or the exhaust valve are integrally mounted on the rocker shaft parts; a low-speed rocker arm and a high-speed rocker arm are rotatably mounted; engaging means for selectively attaching the rocker arms are disposed in the rocker shaft parts; and arm springs for endowing the rocker arms 35 with biasing forces are disposed, wherein the low-speed and high-speed arm springs are set to low-speed spring specifications to achieve interchangeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.