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Method and device for operating an internal combustion engine, in particular an internal combustion engine of a motor vehicle

A technology for internal combustion engines and exhaust devices, which is applied to the operation of internal combustion engines of motor vehicles and the field of devices for internal combustion engines. It can solve problems such as the infeasibility of exhaust gas recirculation, achieve the effects of improving the degree of inflation and reducing component costs

Active Publication Date: 2015-06-03
MAN TRUCK & BUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Effective exhaust gas recirculation is therefore not possible in operating states with small scavenging pressure differences

Method used

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  • Method and device for operating an internal combustion engine, in particular an internal combustion engine of a motor vehicle

Examples

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Embodiment Construction

[0019] In addition, in figure 1 The exemplary arrangement shown in includes an exhaust gas turbocharger 4 with a compressor 5 and a turbine 6 . Upstream of the internal combustion engine, a charge air cooler 7 is connected downstream of the compressor 5 , wherein a charge air line 8 leading from the compressor 5 through the charge air cooler 7 in the direction of the internal combustion engine 1 Downstream of the air cooler 7 branch off into a first charge air line 8 a and a second charge air line 8 b , which are thus conducted in two streams to the internal combustion engine 1 . In this case, the first charge air line 8 a communicates with the first cylinder bank 2 via the intake manifold area 9 according to fluid technology and the second charge air line 8 b is fluidically connected to the second cylinder bank 3 via the second intake manifold region 10 . In this case, each cylinder of the internal combustion engine is conventionally associated with an intake duct which fo...

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Abstract

The method involves supplying a cylinder group (2) of a combustion engine (1) with fresh gas. Flood-crossed exhaust gas recirculation is implemented, in which exhaust gas return lines (21, 22) are guided back to fresh gas lines i.e. loading gas lines (8a, 8b) and deviates from exhaust lines (16, 17). Shut-off elements i.e. switching valves (11, 12) are controlled such that exhaust gas is supplied from the exhaust lines via the exhaust gas return lines, to the fresh gas lines that are locked by the shut-off elements and are not locked by a fresh gas supply unit. An independent claim is also included for a device for operating the combustion engine of the motor vehicle.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine, in particular an internal combustion engine of a motor vehicle, according to the preamble of claim 1 . The invention also relates to a device for operating an internal combustion engine, in particular an internal combustion engine of a motor vehicle, according to the preamble of claim 5 . Background technique [0002] Internal combustion engines with exhaust gas recirculation are generally known. Furthermore, exhaust gas recirculation (ie branching off a part of the exhaust gas flow from the exhaust tract of the internal combustion engine and returning it to the intake tract of the internal combustion engine) serves to reduce nitrogen oxide emissions. Furthermore, exhaust gas recirculation is also used to reduce specific fuel consumption, for example in part-load operation of the internal combustion engine. [0003] Furthermore, exhaust gas recirculation is also known in s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M25/07F02D41/08F02B37/12F02B29/04
CPCF02D41/005F02D41/0082F02D2041/0017F02M26/43Y02T10/40
Inventor A·帕彭海默
Owner MAN TRUCK & BUS AG
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