Internal combustion engine having electromagnetic valve driving mechanism and method of controlling electromagnetic valve driving mechanism
US6446588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Apr 27, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L9/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine having an electromagnetic valve driving mechanism adjusts an amount of magnetizing current to be applied to the electromagnetic valve driving mechanism in accordance with a temperature or viscosity of a lubricant used in the electromagnetic valve driving mechanism. Accordingly, intake and exhaust valves can be driven with an electromagnetic force corresponding to a viscosity of the lubricant. Therefore, changes in opening-and-closing operation speeds of the intake and exhaust valves resulting from a temperature or viscosity of the lubricant that is supplied to a sliding portion of the electromagnetic valve driving mechanism can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.