EXHAUST GAS CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

• US 20200131964A1
• Filed: 12/13/2019
• Published: 04/30/2020
• Est. Priority Date: 10/17/2017
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: KORENAGA, Shingo
• Granted Patent: US 10,823,028 B2
• Time in Patent Office: Days
• CPC Class Codes: F01N 13/1805 Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K
• CPC Class Codes: F01N 13/1844 Mechanical joints
• CPC Class Codes: F01N 2350/04 with means compensating thermal expansion
• CPC Class Codes: F01N 3/2013 using electric or magnetic heating means
• CPC Class Codes: F01N 3/2853 using mats or gaskets between catalyst body and housing
• CPC Class Codes: F01N 3/2867 the mats or gaskets being placed at the front or end face of catalyst body
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

An exhaust gas control apparatus for an internal combustion engine includes an outer tube, a downstream side catalyst held in the outer tube via a first mat, and an electric heating catalyst held in the outer tube via a second mat upstream of the downstream side catalyst. A joint of the first mat is disposed in a place other than a vertically lowermost portion.

Claims

1. An exhaust gas control apparatus disposed on an exhaust passage of an internal combustion engine and configured to control exhaust gas, the exhaust gas control apparatus comprising:

an outer tube having an electrical insulation property connected to an exhaust pipe having an electrical conductive property;

an electric heating catalyst positioned inside the outer tube; and

a downstream side catalyst arranged downstream of the electric heating catalyst in an exhaust flow direction in the outer tube, the downstream side catalyst being held inside the outer tube via a first mat,

wherein a joint of the first mat is disposed in a position other than a vertically lowermost portion of the first mat in the outer tube.

2. The exhaust gas control apparatus according to claim 1, wherein the joint of the first mat is disposed in a position other than a vertically lower portion that is positioned below the downstream side catalyst.

3. The exhaust gas control apparatus according to claim 1, wherein the joint of the first mat is disposed in a vertically uppermost portion of the first mat in the outer tube.

4. (canceled)