Dual air induction arrangement
US6691665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Oct 20, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/024
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air induction arrangement 7 for a variable displacement engine is provided. The air induction arrangement 7 includes first and second plenums 22, 24 fluidly connected to respective first and second throttles 26, 28. The first and second throttles 26, 28 are connected to respective first and second inlets 44, 60. In partial operation, the air induction arrangement 7 induces air into the first plenum 22. In higher power demand operation, the air induction arrangement 7 additionally induces air through the second plenum 24. There is a reduction of the cancellation of acoustic output between the first and second inlets 44, 60 so that an acoustic output of the engine 14 operating with only a first group of cylinders 16 is similar to the acoustic output of the engine when the engine is operating with both groups of cylinders 16, 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.