Method and exhaust gas aftertreatment system for detecting the loading of a particle-filtering component

A technology for exhaust gas post-treatment and equipment, which is applied in exhaust gas treatment, electronic control of exhaust gas treatment devices, diagnostic devices of exhaust gas treatment devices, etc., and can solve problems such as difficulties

Active Publication Date: 2022-02-11
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, using this approach to accurately determine the load state of the particulate filter in an Otto motor has proven difficult

Method used

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  • Method and exhaust gas aftertreatment system for detecting the loading of a particle-filtering component
  • Method and exhaust gas aftertreatment system for detecting the loading of a particle-filtering component
  • Method and exhaust gas aftertreatment system for detecting the loading of a particle-filtering component

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Embodiment Construction

[0026] figure 1 By way of example, a simplified schematic diagram of an air and exhaust air duct in the environment of a motor vehicle with an internal combustion engine 10 in which the method according to the invention can be used is shown. The supply air flow 21 first passes through the air mass sensor 22 via the air delivery channel 20 before the supply air flow 21 is fed via the compression stage 24 of the turbocharger 23 and the throttle valve 25 of the internal combustion engine 10 . In internal combustion engine 10 , air is converted exothermicly together with the supplied fuel (not shown here). The exhaust gas generated can be partially resupplied to the supply air flow 21 via the exhaust gas recirculation 26 . The remaining exhaust gas flow 32 is conducted via the exhaust duct 30 first via the exhaust gas turbine 31 of the turbocharger 23 and then into the exhaust gas aftertreatment device 40 . A four-way catalytic converter 41 is arranged in the exhaust gas aftertr...

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Abstract

The invention relates to a method and an exhaust gas aftertreatment device for detecting the loading of particle-filtering components of an exhaust gas aftertreatment device ( 40 ) which is associated with an internal combustion engine ( 10 ) in a motor vehicle, wherein the internal combustion engine is (10) The rotational speed is taken into account. The method and the exhaust gas aftertreatment device for detecting the load state are implemented even for Otto motors in that the load state is detected on the basis of an operating variable derived from the rotational speed of the internal combustion engine ( 10 ).

Description

technical field [0001] The invention relates to a method for detecting the loading of a particle-filtering component of an exhaust gas aftertreatment device which is associated with an internal combustion engine in a motor vehicle, and to a corresponding exhaust gas aftertreatment device, wherein the rotational speed of the internal combustion engine is taken into account Inside. Background technique [0002] In the exhaust gas aftertreatment of diesel motors in motor vehicles, particle filters have been used in recent years in order to be able to comply with limit values ​​with regard to particle emissions. Due to further tightened limit values ​​it may be necessary in the future for the exhaust gas aftertreatment system to be provided with a particle filter even in Otto motors. Because especially in Otto motors with direct injection, ie internal mixture formation, both structural and practical measures reach their limits. From a system point of view, the use of particle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N9/00F02D41/02
CPCF01N9/002F02D41/0235F01N2900/1606F02D2200/101F01N11/002F02D41/2406F02D41/2432F01N2560/08F02D2200/0812F02D2200/1002Y02T10/40
Inventor A.达利奥斯D.莱吉泽克
Owner ROBERT BOSCH GMBH
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