Overload protection for actuator of system for controlling sound propagating through exhaust system

A technology of exhaust system and controller, which is applied in the direction of electric control of exhaust treatment device, diagnostic device of exhaust treatment device, sounding equipment, etc.

Active Publication Date: 2016-04-06
PUREM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the state-of-the-art methods are only suitable for preventing overloading of actuators, but not for suppressing overloading of actuators due to excessive exhaust gas pressure inside the exhaust system, only by the control signal itself

Method used

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  • Overload protection for actuator of system for controlling sound propagating through exhaust system
  • Overload protection for actuator of system for controlling sound propagating through exhaust system
  • Overload protection for actuator of system for controlling sound propagating through exhaust system

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Embodiment Construction

[0037] In the following exemplary embodiments, components with similar functions and structures are represented by similar reference numerals as much as possible. Therefore, in order to understand the features of each component of a specific embodiment, reference should be made to the description of other embodiments and the disclosed invention content.

[0038] Reference image 3 In the following, an embodiment of the system 70 for actively controlling the sound propagating through the exhaust system 40 will be described.

[0039] Such as image 3 As shown, the internal combustion engine 60 is coupled to an intake system 60" for inhaling fresh air for carburization and an exhaust system 40 for discharging exhaust gas formed in the internal combustion engine 60. Only the intake system 60" and Exhaust system 40. Specifically, the filter may be part of the intake system 60". Specifically, the exhaust system 40 may also include an active or passive muffler, a catalytic converter, and...

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Abstract

A system (70) for actively controlling sound propagating through exhaust systems (40) includes a controller (90), a sound generator (30), in fluid communication with an exhaust system (40), and an actuator (20), inside the sound generator and receiving a controller control signal for generating sound inside the sound generator to reduce sound inside the exhaust system. The controller identifies an increased exhaust pressure inside the exhaust system based on signals output by an error microphone (50), a temperature sensor (51), an impedance measuring bridge (52), a bus system (53), or a water sensor (54). The controller interrupts a generation of the control signal and / or interrupts an output of the control signal to the at least one actuator and / or reduces a level of the control signal output to the at least one actuator by at least 30% or at least 60% upon determining a presence of an excessive exhaust gas pressure.

Description

[0001] Cross references to related applications [0002] This application claims the priority of the patent application with the application number 102014113940.2 filed to Germany on September 25, 2014, the entire content of which is incorporated into this application by reference. Technical field [0003] The present invention relates to protecting actuators from mechanical overload. The actuator forming part of the system is designed to control the sound propagating through the exhaust system of a vehicle driven by an internal combustion engine. Background technique [0004] Exhaust systems for internal combustion engines are generally constructed of passive components through which exhaust gas passes under all operating conditions and form the exhaust system as a whole. In addition to tubes, turbochargers, catalytic converters or mufflers can also form such components. [0005] In recent years, the exhaust system has added a system that allows active control of sounds caused by th...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F01N1/06F01N11/00F01N9/00
CPCF01N2560/028G10K2210/12822G10K2210/503G10K2210/51G10K11/17883G10K11/17825F01N1/065G10K11/17821G10K11/17835G10K15/02G10K11/17833
Inventor拉尔夫·郝沃施迈克尔·波美拉
OwnerPUREM GMBH