Claims
- 1. A device for producing a sporty sounding roaring exhaust sound in four-cylinder engines, the device comprising:a manifold with four manifold pipes, two of which pipes meet in one of two first collecting points; and two down-pipes starting at the first collecting points respectively and ending at a second collecting point, a first of the down-pipes having a cross-section wider than a second of the down-pipes, and the second down-pipe having a length greater than the first down-pipe so that exhaust gas pulses traveling along the first and second down-pipes respectively reach the second collecting point at uneven distances.
- 2. The device according to claim 1, wherein the manifold pipes are configured so that the exhaust gas pulses traveling the manifold pipes reach the first collecting points respectively at even distances.
- 3. The device according to claim 1, comprising a resonator space coupled to at least one of the down-pipes.
- 4. The device according to claim 1, comprising a flow-active body mounted in at least one of the down-pipes.
- 5. The device according to claim 4, comprising a screen mounted in at least one of the down-pipes.
- 6. The device according to claim 4, comprising a nozzle mounted in at least one of the down-pipes.
- 7. The device according to claim 4, comprising a valve mounted in at least one of the down-pipes.
- 8. The device according to claim 4, comprising a catalyst body mounted in at least one of the down-pipes.
Parent Case Info
This application is a continuation of Ser. No. 09/764,917 filed on Jul. 18, 2001 now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
4197704 |
Date et al. |
Apr 1980 |
A |
4373329 |
Martini |
Feb 1983 |
A |
4731995 |
McFarland, Jr. |
Mar 1988 |
A |
6155046 |
Kato et al. |
Dec 2000 |
A |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09/764917 |
Jan 2001 |
US |
Child |
10/328692 |
|
US |