# US 8,769,942 B2 · Exhaust manifold for an internal combustion engine

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- Number: US 8,769,942 B2
- Document ID: US8769942B2
- Status: Granted
- Kind: B2
- Application number: 13/572,276
- Filed: 2012-08-10
- Published: 2012-11-29
- Granted: 2014-07-08
- Earliest claimed: 2010-02-13
- Assignees: Bayerische Motoren Werke Aktiengesellschaft
- Applicants: Guenter Koch; Stefan Ehrmann; Johanna Goldstein
- Inventors: Guenter Koch; Stefan Ehrmann; Johanna Goldstein
- Web page: https://patentgrep.com/patent/US8769942B2

## CPC

- F01N 13/10: of exhaust manifolds {(with cooling jacket F01N3/046)}
- F01N 3/30: Arrangements for supply of additional air (control, e.g. using by-passes or variable air pump drives, F01N3/22)
- F01N 3/34: using air conduits or jet air pumps, e.g. near the engine exhaust port
- Y02T 10/12: Improving ICE efficiencies
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An exhaust manifold for an internal combustion engine has at least one exhaust pipe and a flange which can be fastened to an engine block of the internal combustion engine. On the side facing away from the engine block, the flange is provided with a channel which is connected to a fluid line and which is in fluid communication with the interior of the exhaust pipe via a lateral opening in the exhaust pipe. The fluid line opens into the channel on the side of the flange that faces away from the engine block.

## Claims

### Claim 1

An exhaust manifold for an internal combustion engine having an engine block, comprising:
at least one exhaust pipe;
a flange of the exhaust manifold operatively configured to be fastenable to the engine block of the internal combustion engine, the flange having a channel on a side facing away from the engine block, wherein the channel is U-shaped and is open in a direction facing away from the engine block;
a U-shaped sheet metal component configured to extend over the U-shaped channel on the flange side facing away from the engine block, the U-shaped sheet metal component being configured to close off the open U-shaped channel and form a fluid passage therebetween;
a fluid line operatively connected with the channel; and
an attachment for connection to the fluid line to the U-shaped sheet metal component,
wherein
the attachment is located on a face of the U-shaped sheet metal component facing away from the engine block,
the fluid line is in fluid communication with an interior of the exhaust pipe via the attachment, the channel and a lateral opening in the exhaust pipe, and
the fluid line opens into the channel on the side of the flange facing away from the engine block.

### Claim 2 (depends on 1)

The exhaust manifold according to claim 1, wherein the channel is operatively configured such that all exhaust pipes extending through the flange extend through the channel.

### Claim 3 (depends on 1)

The exhaust manifold according to claim 1, wherein the lateral opening in the exhaust pipe comprises a laterally arranged slot in the exhaust pipe.

### Claim 4 (depends on 2)

The exhaust manifold according to claim 2, wherein the lateral opening in the exhaust pipe comprises a laterally arranged slot in the exhaust pipe.

### Claim 5 (depends on 1)

The exhaust manifold according to claim 1, further comprising:
an outer shell configured to provide an air gap insulation with respect to all exhaust pipes surrounded by the outer shell.

### Claim 6 (depends on 5)

The exhaust manifold according to claim 5, wherein the sheet metal component forming the channel is arranged within the outer shell.

### Claim 7 (depends on 1)

The exhaust manifold according to claim 1, wherein the at least one exhaust pipe extends through the flange in a direction of the engine block.

### Claim 8 (depends on 2)

The exhaust manifold according to claim 2, wherein the at least one exhaust pipe extends through the flange in a direction of the engine block.

### Claim 9 (depends on 3)

The exhaust manifold according to claim 3, wherein the at least one exhaust pipe extends through the flange in a direction of the engine block.