# US 7,610,758 B2 · Supercharged internal combustion engine

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- Number: US 7,610,758 B2
- Document ID: US7610758B2
- Status: Granted
- Kind: B2
- Application number: 11/801,413
- Filed: 2007-05-09
- Published: 2007-12-13
- Granted: 2009-11-03
- Earliest claimed: 2004-11-12
- Assignees: Daimler AG
- Inventors: Joachim Augstein; Frank Hangs; Arkadi Kudashev; Christian Pies
- Web page: https://patentgrep.com/patent/US7610758B2

## CPC

- F01N 13/18: Construction facilitating manufacture, assembly, or disassembly
- F01N 13/10: of exhaust manifolds {(with cooling jacket F01N3/046)}
- F02B 37/007: with exhaust-driven pumps arranged in parallel {, e.g. at least one pump supplying alternatively}
- F02B 37/02: Gas passages between engine outlet and pump drive, e.g. reservoirs
- F01N 13/107: {More than one exhaust manifold or exhaust collector}
- 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)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

In a supercharged internal combustion engine having a plurality of cylinders which are arranged in at least one cylinder bank, preferably a V-type engine with an exhaust gas turbocharger including a compressor, which is arranged in an intake line of the internal combustion engine and a turbine which is arranged in an exhaust gas collection line, the exhaust gas of a plurality of cylinders of the cylinder bank is combined in an exhaust gas collection line, while at least one cylinder of a cylinder bank has a separate exhaust gas line which bypasses the exhaust gas turbocharger and joins the exhaust gas line downstream of the turbine.

## Claims

### Claim 1

A supercharged V8 internal combustion engine (10) having two cylinder banks (11, 12) with four cylinders (1-4, 5-8) arranged in each of its two cylinder banks (11, 12), the V8 engine having an ignition sequence of 1-5-4-2-6-3-7-8 with a 90° ignition offset between cylinders so that in each cylinder bank, two cylinders (2 and 4 in bank 11 and 7 and 8 in bank 12) have the 90° ignition spacing, an intake line (13, 14) for feeding combustion air to the two cylinder banks. (11, 12) of the internal combustion engine (10), two exhaust gas collection lines (15, 16) for conducting exhaust gases away from the cylinders (1-8) of the cylinder banks (11, 12), an exhaust gas turbocharger (17, 18) including a turbine (19, 20) arranged in each exhaust gas collection line (15, 16) and a compressor (21, 22) arranged in each intake line (13, 14, one of the two cylinders with 90° ignition spacing in each bank (11, 12) having a separate exhaust gas line (23, 24) extending from the respective one cylinder (4 and 8) of the cylinder bank (11, 12) and joining the exhaust gas collection line (15, 16) downstream of the turbine (19, 20) of the exhaust gas turbocharger (17, 18), and the other cylinders (1, 2, 3, 5, 6, 7) being connected to the exhaust gas collection line (15, 16) upstream of the respective exhaust gas turbine (19, 20), each of the exhaust gas collection lines (15, 16) comprising a first common exhaust gas manifold (25) for all the cylinders (1-3, 5-7) which are combined in the respective exhaust gas collection line (15, 16), and an exhaust gas turbocharger housing (26), which is integrated into the exhaust gas manifold (25), the separate exhaust gas lines (23, 24) having second exhaust gas manifolds (27) for the cylinders (4, 8) of the two cylinder banks (11, 12), and a connection piece (28) for each of the exhaust gas collection lines (15, 16), each of the exhaust gas collection lines (15, 16) having a first flange (29) downstream of the turbine (19, 20), the second exhaust gas manifold (27) and the connection piece (28) at each bank (11, 12) being single piece components, and the connection piece (28) having a second flange (30) for connection to the first flange (29).

### Claim 2 (depends on 1)

The supercharged internal combustion engine as claimed in claim 1, wherein in each case the last cylinder (4, 8) of each cylinder bank (11, 12) has a separate exhaust gas line (23, 24).