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Exhaust gas aftertreatment system and method for controlling exhaust gas aftertreatment system of internal combustion engine

A technology of exhaust gas post-treatment and internal combustion engine, which is applied in the direction of electronic control of exhaust treatment devices, exhaust treatment, internal combustion piston engines, etc., and can solve problems such as control unit damage, damage to the power grid, and high-energy pulses

Pending Publication Date: 2022-02-01
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In case of sudden connection of heating elements to the supply network and in case of sudden disconnection of heating elements from the supply network, instability of the entire network may result, or high-energy pulses may appear on the network, which may well damage the control unit of the network or other parts or destroy

Method used

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  • Exhaust gas aftertreatment system and method for controlling exhaust gas aftertreatment system of internal combustion engine
  • Exhaust gas aftertreatment system and method for controlling exhaust gas aftertreatment system of internal combustion engine
  • Exhaust gas aftertreatment system and method for controlling exhaust gas aftertreatment system of internal combustion engine

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Embodiment Construction

[0045] figure 1 The electrical circuit of the exhaust gas aftertreatment system 100 is first shown in a schematic manner. The exhaust gas aftertreatment system 100 includes an exhaust gas catalyst 110, wherein the exhaust gas catalyst 110 includes a heating element 120 and an exhaust gas catalytic portion. The heating element 120 is configured to heat the catalytic portion of the exhaust gas. The exhaust aftertreatment system 100 also includes a voltage source 140 . Voltage source 140 is configured to supply electrical power to heating element 120 . According to this embodiment, the exhaust aftertreatment system 100 also includes redundant switching elements 160 . According to this embodiment, redundant switching elements 160 are arranged to provide additional turn-off paths.

[0046] The exhaust aftertreatment system 100 also includes a DC-DC converter 170 . The DC-DC converter 170 is configured to control the supply of electrical power from the voltage source 140 to the...

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Abstract

The invention relates to an exhaust gas aftertreatment system (100) for treating exhaust gas from an internal combustion engine, wherein the exhaust gas after treatment system (100) comprises: an exhaust gas catalyst (110) comprising an exhaust gas catalysis portion and a heating element (120), wherein the heating element (120) is configured to heat the exhaust gas catalysis portion, a voltage source (140) which supplies the heating element (120) with electric power for heating the heating element (120), a DC to DC converter (170) which is configured to control the electric power supply from the voltage source (140) to the heating element (120), and a control unit (200) which is configured to control the DC to DC converter (170) based on the required electric power to heat the exhaust gas catalysis portion.

Description

technical field [0001] The present invention relates to an exhaust gas aftertreatment system for treating exhaust gas from an internal combustion engine and a method for controlling the exhaust gas aftertreatment system of an internal combustion engine. Background technique [0002] Exhaust gas aftertreatment systems are particularly used in vehicles employing internal combustion engines to treat their exhaust gas in order to reduce the exhaust gas emissions of the internal combustion engine. Accordingly, exhaust gas aftertreatment systems include components such as exhaust gas catalysts. Exhaust gas catalysts treat exhaust emissions through chemical redox. The exhaust gas catalyst thus comprises an exhaust gas catalytic section through which the exhaust gas flows and in which chemical redox takes place. [0003] The operating temperature required for the exhaust gas catalytic part is usually in the region above 200°C. To achieve this temperature, exhaust gas catalysts us...

Claims

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Application Information

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IPC IPC(8): F01N3/20F01P9/00
CPCF01N3/2013F01P9/00F01N2240/16F01N2900/0602F01N2900/1602F01N2900/1626F01N3/2006F01N9/002Y02T10/12Y02T10/40
Inventor A·科特拉
Owner VTESCO TECH GMBH
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