Wide-band damper for charge air lines of an internal combustion engine with turbocharger
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-035/12
F02M-035/10
F16L-055/033
출원번호
US-0880196
(2011-10-21)
등록번호
US-9121374
(2015-09-01)
우선권정보
DE-10 2010 042 789 (2010-10-22)
국제출원번호
PCT/EP2011/068441
(2011-10-21)
§371/§102 date
20130626
(20130626)
국제공개번호
WO2012/052548
(2012-04-26)
발명자
/ 주소
Denker, Dietrich
Huth, Stefan
출원인 / 주소
UMFOTEC UMFORMTECHNIK GMBH
대리인 / 주소
McCarter & English, LLP
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
A wide-band damper is designed for charge air lines of an internal combustion engine with turbocharger. The wide-band damper has an inlet and an outlet. Proceeding from the inlet, at least three slot chambers are arranged axially in series. The slot chambers are dimensioned for different frequencies
A wide-band damper is designed for charge air lines of an internal combustion engine with turbocharger. The wide-band damper has an inlet and an outlet. Proceeding from the inlet, at least three slot chambers are arranged axially in series. The slot chambers are dimensioned for different frequencies f1, f2 and f3. At least three gap chambers are provided, which are arranged axially in series and axially downstream of the at least three slot chambers. The gap chambers are dimensioned for different frequencies f6, f7 and f8. Each of the frequencies f1, f2 and f3 of the slot chambers is lower than each of the frequencies f6, f7 and f8 of the gap chambers.
대표청구항▼
1. A wide-band damper for charge air lines of an internal combustion engine having a turbocharger, the wide-band damper, comprising: an inlet;an outlet;at least three slit chambers disposed axially one behind the other between the inlet and the outlet, the slit chambers each being dimensioned to dam
1. A wide-band damper for charge air lines of an internal combustion engine having a turbocharger, the wide-band damper, comprising: an inlet;an outlet;at least three slit chambers disposed axially one behind the other between the inlet and the outlet, the slit chambers each being dimensioned to dampen or insulate different frequencies f1, f2 and f3; andat least three gap chambers disposed axially one behind the other and axially between the slit chambers and the outlet, the gap chambers each being dimensioned to dampen or insulate different frequencies f6, f7 and f8, wherein each of the frequencies f1, f2 and f3 of the slit chambers is lower than each of the frequencies f6, f7 and f8 of the gap chambers. 2. The wide-band damper according to claim 1, wherein the frequencies for which the slit chambers and the gap chambers are dimensioned each increase from the inlet towards the outlet, so that, for slit or gap chambers that are adjacent to each other, the chamber that is located closer to the outlet has a higher frequency than the other chamber. 3. The wide-band damper according to claim 1, wherein each of the slit chambers comprises a slit and each of the gap chambers comprises a gap, and at least one of (1) a distance between the gaps of two of the gap chambers adjacent to each other, in an axial direction, is smaller than an axial width of each gap of the two adjacent gap chambers, and (2) distances between the slits, in the axial direction away from the inlet, become gradually smaller. 4. The wide-band damper according to claim 3, wherein each slit chamber comprises a cavity and, with respect to said slits that are among an adjacent two of the slit chambers, the slit of the slit chamber that is closer to the inlet is positioned closer to an inlet-side end of the cavity of that slit chamber. 5. The wide-band damper according to claim 4, wherein the slit of the first slit chamber facing the inlet is located in an immediate vicinity of an entry-side radial wall of the cavity. 6. The wide-band damper according to claim 1, wherein the gap chambers have a rounded profile. 7. The wide-band damper according to claim 1, further comprising a jacket tube, which extends at least over outer regions of the gap chambers. 8. The wide-band damper according to claim 1, wherein a distance in an axial direction between any adjacent two of the gap chambers is substantially identical. 9. The wide-band damper according to claim 1, wherein a total number of the gap chambers is greater by at least two than a total number of the slit chambers. 10. The wide-band damper according to claim 1, wherein the gap chambers are fabricated integrally from a corrugated tube with outer dimensions that decrease in a direction from the inlet towards the outlet. 11. The wide-band damper according to claim 1, wherein the gap chambers have a rounded profile that is configured as a corrugated profile. 12. The wide-band damper according to claim 1, wherein a distance in an axial direction between any adjacent two of the gap chambers deviates from a distance in an axial direction of any other adjacent two of the gap chambers by no more than about 30%. 13. The wide-band damper according to claim 1, wherein a total number of the gap chambers is greater by at least three than a total number of the slit chambers. 14. The wide-band damper according to claim 1, wherein the turbocharger is arranged behind the wide-band damper. 15. The wide-band damper according to claim 1, wherein the turbocharger is arranged in front of the wide-band damper.
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이 특허에 인용된 특허 (13)
Caliskan, Alper, Accoustic attenuation device for an intake line of a combustion engine and intake line incorporating same.
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