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Modular exhaust gas recirculation cooling for internal combustion engines

An exhaust gas recirculation and modularization technology, applied in the direction of exhaust gas recirculation, internal combustion piston engine, combustion engine, etc., to achieve the effect of reducing the possibility of fouling

Active Publication Date: 2012-05-30
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EGR gases may be at undesirably high temperatures when a bypass line is used

Method used

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  • Modular exhaust gas recirculation cooling for internal combustion engines
  • Modular exhaust gas recirculation cooling for internal combustion engines
  • Modular exhaust gas recirculation cooling for internal combustion engines

Examples

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Embodiment Construction

[0017] The following description is merely illustrative in nature and in no way restricts the invention and its application or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features, and are designated by the numeral referenced by 100 (eg, 20 , 120 , 220 , etc.).

[0018] In accordance with the present invention, an exhaust gas recirculation (EGR) system utilizes a plurality of EGR cooler modules 20 to provide varying degrees of cooling of the exhaust gas recirculation gas as desired. figure 1 A typical EGR cooler module 20 is shown that may be used with the EGR cooling system of the present invention. The EGR cooler module 20 includes an inlet 22 and an outlet 23 through which exhaust gas recirculation gas enters and exits the EGR cooler module. The EGR cooler module includes a cooler core 24 and a bypass line 26 through which exhaust gas recirculation gas may flow. A flow control device ...

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PUM

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Abstract

An EGR system compensates for differing EGR flows and / or exhaust temperatures and can maintain the cooler exit temperature above the critical temperature, thereby reducing the possibility of EGR cooler fouling. A plurality of exhaust gas recirculation cooler modules is disposed between an exhaust gas passage and an air passage. The cooler modules receive exhaust gas from the exhaust gas passage and supply the received exhaust gas to the air passage for recirculation into an intake manifold. Each of the cooler modules includes a cooler portion, a bypass portion, and a flow control device. The cooler portion and the bypass portion are arranged such that fluid flowing through the cooler portion and the bypass portion flows therethrough without flowing through the other of the cooler portion and the bypass portion. The cooler portion reduces a temperature of the fluid flowing through the cooler portion.

Description

technical field [0001] The present invention relates to internal combustion engines, and more particularly to cooling an exhaust gas recirculation flow of an internal combustion engine. Background technique [0002] The contents in this part merely provide the background technology related to the present invention and do not constitute the prior art. [0003] Operation of an internal combustion engine includes combustion that produces exhaust gas. During combustion, air is delivered through the intake valves and fuel is delivered through fuel injectors and mixed within the cylinder. The mixture is combusted in the cylinder. Air flow delivered to these cylinders may be measured using a mass air flow (MAF) sensor. The MAF sensor measures the total intake of fresh air flow through the intake system, which may include one or more turbochargers. After combustion, the pistons push the exhaust in these cylinders into the exhaust system. Exhaust gases may contain a variety of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M25/07
CPCF02M25/0732Y02T10/121F02M25/0728F02M26/25F02M26/24
Inventor X·(S·)李S·H·埃尔塔里F·G·雷顿
Owner GM GLOBAL TECH OPERATIONS LLC