Invention Grant
- Patent Title: Active noise control system for exhaust systems and method for controlling the same
- Patent Title (中): 排气系统主动噪声控制系统及其控制方法
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Application No.: US13485520Application Date: 2012-05-31
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Publication No.: US09025786B2Publication Date: 2015-05-05
- Inventor: Christof Luecking , Andre Mengel
- Applicant: Christof Luecking , Andre Mengel
- Applicant Address: DE Neunkirchen
- Assignee: Eberspaecher Exhaust Technology GmbH & Co. KG
- Current Assignee: Eberspaecher Exhaust Technology GmbH & Co. KG
- Current Assignee Address: DE Neunkirchen
- Agency: Morris & Kamlay LLP
- Priority: DE102011103211 20110601
- Main IPC: G10K11/16
- IPC: G10K11/16 ; F01N1/06 ; F16L55/033 ; G10K11/178

Abstract:
An active noise control system for exhaust systems of a combustion engine operated vehicle comprises an anti-sound control connectable to an engine control of the vehicle and a loudspeaker connected to the control for receiving control signals and designed for generating an anti-sound in a sound generator, fluidically connectable to the exhaust system. In the control, at least two curves are stored in order to cancel airborne sound conducted in the exhaust system through outputting the signal to the loudspeaker. The curves cover different temperature ranges of the exhaust gas, which temperature ranges overlap one another by pairs or directly adjoin one another. The control is furthermore designed to select a curve suitable for a respective temperature of the exhaust gas conducted in the exhaust system from the available curves by means of signals output by the engine control and output signals to the loudspeaker making use of this curve.
Public/Granted literature
- US20120308023A1 ACTIVE NOISE CONTROL SYSTEM FOR EXHAUST SYSTEMS AND METHOD FOR CONTROLLING THE SAME Public/Granted day:2012-12-06
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