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Method and equipment for preventing formation of condensation before compressor of diesel engine mounted in motor vehicle

A technology of internal combustion engine and turbocharging, applied in the direction of internal combustion piston engine, combustion engine, machine/engine, etc., can solve the problems of internal combustion engine overall efficiency damage, damaged blades, limited exhaust volume, etc.

Inactive Publication Date: 2014-05-14
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, a problem with low-pressure exhaust gas recirculation is that, depending on the temperature and humidity of the ambient air being drawn in, water droplets or ice particles can condense from the intake air upstream of the compressor, which can damage the high-speed rotating compressor. impeller blades
However, since the amount of exhaust gas that can be recirculated is limited, if the ambient temperature is very low, the method will reach its limit and the overall efficiency of the internal combustion engine will suffer

Method used

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  • Method and equipment for preventing formation of condensation before compressor of diesel engine mounted in motor vehicle
  • Method and equipment for preventing formation of condensation before compressor of diesel engine mounted in motor vehicle
  • Method and equipment for preventing formation of condensation before compressor of diesel engine mounted in motor vehicle

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Embodiment Construction

[0024] figure 1 Shown is an internal combustion engine 2 comprising an intake system and an exhaust system, which in this example may be a diesel engine or a gasoline engine.

[0025] The intake system starts from the intake duct 4 receiving ambient air, then passes through the air filter 6, passes through the compressor 8 of the exhaust turbocharger, and passes through the inlet temperature control module 12, to the intake manifold of the internal combustion engine 2 18 , where the exhaust turbocharger is composed of a compressor 8 and a turbine 10 , and the inlet temperature control module 12 includes a charge air cooler 14 and an electric furnace unit 16 . The air cleaner 6 and the compressor 8 are connected to each other through the intake passage 5 . The electric oven unit 16 enables the charge air to be heated during a cold start.

[0026] The exhaust system starts from the exhaust manifold 20 of the internal combustion engine 2, then passes through the turbine 10 of t...

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Abstract

The invention relates to a method and equipment for preventing formation of condensation before a compressor of a diesel engine mounted in a motor vehicle. The method involves re-circulating low-pressure exhaust gas from an exhaust gas treatment device (22) through an exhaust gas recirculation cooler for an air intake duct (5) of a compressor (8). The either ambient temperature air or air is heated by waste heat of the internal combustion engine. The mixture of the air at ambient temperature and heated air is received by the compressor depending on the ambient temperature of the air intake duct (5).

Description

technical field [0001] The invention relates to a method and a device for preventing condensate formation upstream of the compressor of a turbocharged motor vehicle internal combustion engine with low-pressure exhaust gas recirculation, wherein the low-pressure exhaust gas passes from an exhaust gas aftertreatment unit via an exhaust gas recirculation cooler is recirculated to the intake channel of the compressor, as described in the preamble of the independent claim. Background technique [0002] Modern diesel and Otto-cycle engines usually have exhaust gas recirculation (EGR), in which exhaust gas is directed back into the intake manifold in order to reduce, inter alia, temperature peaks in the cylinders (due to low oxygen in the mixture concentration setting). In this way, it is possible in turn to reduce or limit the emission of nitrogen oxides, which is necessary in order to comply with the limit values ​​set forth in the exhaust gas standard EURO6, for example. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B39/16
CPCF01N5/02F01N2260/022F02B29/0418F02D21/08F02D41/0007F02D41/0065F02D2200/0406F02D2200/0414F02D2200/0418F02M26/05F02M26/06F02M26/15F02M26/24F02M26/25F02M31/042F02M31/093F02M31/13F02M35/10268Y02T10/12Y02T10/40
Inventor C·W·维吉尔德A·库斯克Y·M·S·雅库巴D·罗杰
Owner FORD GLOBAL TECH LLC