Vehicular exhaust device

Patent metadata

Field	Value
Publication number	US-2017130631-A1
Application number	US-201615257229-A
Country	US
Kind code	A1
Filing date	Sep 6, 2016
Priority date	Nov 6, 2015
Publication date	May 11, 2017
Grant date	—

Abstract

A vehicular exhaust device is disclosed. The vehicular exhaust device includes an exhaust pipe, which is connected at one end to an exhaust manifold of a cylinder and at the other end to a catalytic converter. In particular, an intermediate portion of the exhaust pipe is in contact with the side surface of the catalytic converter so as to heat the catalytic converter by heat of the exhaust pipe.

First claim

What is claimed is:

1 . A vehicular exhaust device comprising:
an exhaust pipe, which at one end is connected to an exhaust manifold of a cylinder head and at other end to a catalytic converter, and which has an intermediate portion configured to contact with a side surface of the catalytic converter.

2 . The vehicular exhaust device according to claim 1 , wherein the intermediate portion of the exhaust pipe is curved so as to surround the side surface of the catalytic converter so that the intermediate portion forms a cylindrical shape.

3 . The vehicular exhaust device according to claim 1 , wherein the cylinder block includes a plurality of cylinders, and the vehicular exhaust device includes one or more exhaust manifolds and one or more exhaust pipes.

4 . The vehicular exhaust device according to claim 3 , wherein a number of the exhaust manifolds is smaller than a number of the cylinders, and first ends of the exhaust manifolds are branched so as to be connected to respective cylinders such that a cylinder connected to one of the exhaust manifolds is different from cylinders connected to remaining exhaust manifolds,
wherein a number of the exhaust pipes is same as a number of the exhaust manifolds, and each of first ends of the exhaust pipes is connected to a second ends of a corresponding exhaust manifold, and second ends of the exhaust pipes are combined with each other, the combined ends being connected to a first end of the catalytic converter.

5 . The vehicular exhaust device according to claim 4 , wherein the first ends of the exhaust manifolds are branched and extend by a same length, and the branched ends of the exhaust manifolds are connected to respective cylinders.

6 . The vehicular exhaust device according to claim 1 , wherein the exhaust manifold is integrally formed in the cylinder head.

7 . The vehicular exhaust device according to claim 1 , wherein the exhaust manifold is coupled to a portion of the cylinder head.

8 . The vehicular exhaust device according to claim 1 , wherein the exhaust pipe is integrally formed with the catalytic converter.

9 . A vehicular exhaust device comprising:
an exhaust manifold mounted on a cylinder head; and an exhaust pipe in communication with the exhaust manifold and configured to discharge exhaust gas, the exhaust pipe including a first end portion, an intermediate portion, and a second end portion. wherein the first end portion is connected to the exhaust manifold, the second end portion is linked to a catalytic converter, and an intermediate portion is curved and configured to wrap the catalytic converter so that heat generated from the intermediate portion transfers to the catalytic converter.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Woo Soo Hyung
• Kim Woo Tae
• Kim Dae Sung
• Lee Byeong Seok
• Han Seung Kook

Classifications

• F01N3/28 Primary

  Construction of catalytic reactors · CPC title

• F01N3/08 Primary

  for rendering innocuous (using electric or electrostatic separators F01N3/01; chemical aspects B01D53/92) · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• F01N3/2006

  Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating (by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235) · CPC title