Exhaust system of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-11149606-B2
Application number	US-201916442605-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Jun 15, 2018
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

An exhaust system ( 1 ) of an internal combustion engine, prior to a first heating-up of the exhaust system ( 1 ), has a particle filter ( 2 ) and an exhaust line ( 3 ) upstream of the particle filter ( 2 ). The exhaust system ( 1 ) has a carrier element ( 11 ) with ash-forming components or ash applied thereto. The carrier element ( 11 ) may be on a side of the particle filter ( 2 ) facing toward the exhaust line ( 3 ). Alternatively, the exhaust system ( 1 ) may have a catalytic converter ( 4 ) upstream of the particle filter ( 2 ), the carrier element ( 11 ) that with the ash-forming components or the ash may be applied to the catalytic converter ( 4 ).

First claim

What is claimed is:

1. An exhaust system of an internal combustion engine in a state prior to a first heating-up of the exhaust system, the exhaust system comprising: an exhaust line carrying a stream of exhaust gas from the internal combustion engine; a particle filter disposed so that the exhaust line is upstream of the particle filter; a catalytic converter arranged upstream of the particle filter; and a carrier element that has pulverulent ash-forming components or ash applied thereto, the carrier element being upstream of the particle filter and being composed of a paper, a cardboard or a plastic that burns under conditions that prevail in the exhaust system so that the carrier element burns upon a first heating-up of the exhaust system and so that the pulverulent ash-forming components or the ash are released and carried by the exhaust gas to the particle filter.

2. The exhaust system of claim 1 , wherein the carrier element is applied to a side of the particle filter facing toward the exhaust line.

3. The exhaust system of claim 1 , wherein the carrier element that has ash-forming components or ash is applied to the catalytic converter.

4. The exhaust system of claim 3 , wherein the carrier element is applied to a side of the catalytic converter that faces toward the particle filter.

5. The exhaust system of claim 3 , wherein the carrier element is applied to a side of the catalytic converter that faces away from the particle filter.

6. The exhaust system of claim 1 , wherein the ash-forming components comprise at least one of Ca, Mg, P and Zn.

7. The exhaust system of claim 1 , wherein the ash comprises at least one of MgO and Al 2 O 3 .

8. The exhaust system of claim 1 , wherein the carrier element is bonded adhesively to the particle filter.

9. The exhaust system of claim 1 , wherein the catalytic converter and the particle filter are arranged at a distance of at most 20 mm from one another.

10. The exhaust system of claim 1 , wherein the internal combustion engine is a gasoline engine or a diesel engine.

11. The exhaust system of claim 1 , wherein the carrier element is bonded adhesively to the catalytic converter.

12. An automotive vehicle, comprising: an internal combustion engine; an exhaust line connected to the internal combustion engine and carrying exhaust gas produced by the internal combustion engine; a particle filter disposed so that the exhaust line is upstream of the particle filter; a catalytic converter arranged upstream of the particle filter and a carrier element incorporated into the exhaust line upstream of the particle filter, the carrier element having pulverulent ash-forming components or ash applied thereto; wherein the carrier element is formed from a paper, a cardboard or a plastic that burns under conditions that prevail in the exhaust gas in the exhaust line so that the carrier element burns upon a first operation of the internal combustion engine and so that the pulverulent ash-forming components or the ash are released and carried by the exhaust gas to the particle filter.

Assignees

• Porsche Ag
• Illinois Tool Works

Inventors

• Wessels Michael
• De Wilde Ingo

Classifications

• B01D2279/30

  for treatment of exhaust gases from IC Engines · CPC title

• F01N2330/101

  using binders, e.g. to form a permeable mat, paper or the like · CPC title

• F01N3/021 Primary

  by means of filters · CPC title

• F01N3/035 Primary

  with catalytic reactors · CPC title

• F01N3/103

  Oxidation catalysts for HC and CO only · CPC title