Intake system of multi-cylinder internal combustion engine
US5027753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Mar 9, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An intake system of a multi-cylinder interval combustion engine including a common inlet duct, first and second resonating ducts branched from the downstream end of the inlet duct, first and second resonating chambers leading from the first and second resonating ducts, respectively, a plurality of first intake ducts for connecting the first resonating chamber to a first group of cylinders, respectively, having ignition timings set not to come adjacent to each other, respectively, a plurality of second intake ducts for connecting the second resonating chamber to a second group of cylinders, respectively, having ignition timings set not to come adjacent to each other, a common intake chamber capable of communicating with both the resonating chambers through communication ports which can be closed by valves, and an actuator for opening and closing the valves at least in response to the engine revolutions. A valve operating system is provided to control at least the closure timing of the intake valves at least in response to the engine revolutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.