Engine intake system
US4736714A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Aug 19, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention relates to an internal combustion engine including a plurality of groups of combustion chambers and at least a first expansion chamber and a second expansion chamber. The first and second expansion chambers extend in a lengthwise direction and are separated from each other by a partition wall. The first expansion chamber is connected with one group of combustion chambers through separate branch passages. The second expansion chamber is also connected with another group of combustion chambers respectively through separate branch passages. First and second intake passages are connected at downstream ends with the first expansion chamber and the second expansion chamber, respectively. An auxiliary communicating passage is provided along the partition wall independent from said first and second intake passages and connects the first and second expansion chambers with each other. A length changing device for alternately communicating the first and second expansion chambers with each other by an auxiliary communicating passage of a minimum length and by an auxiliary communicating passage of a maximum length in accordance with engine operating condition is provided. The fir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.