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Cooling system for an internal combustion engine

A technology of cooling system and internal combustion engine, which is applied in the direction of engine cooling, liquid cooling, charging system, etc. It can solve the problems of increasing pollutant emissions and limiting the functionality of LR-EGR system, so as to prevent condensation, increase temperature, and improve The effect of compactness

Active Publication Date: 2015-12-30
GM GLOBAL TECH OPERATIONS LLC
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AI Technical Summary

Problems solved by technology

But this solution significantly limits the functionality of the LR-EGR system, which leads to increased pollutant emissions from the engine during these operating phases

Method used

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  • Cooling system for an internal combustion engine
  • Cooling system for an internal combustion engine
  • Cooling system for an internal combustion engine

Examples

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Embodiment Construction

[0077] Some embodiments may include automotive system 100, such as figure 1 and 2 As shown in , it includes an internal combustion engine 110, such as a diesel engine of a motor vehicle. Internal combustion engine 110 has an engine block 120 defining at least one cylinder 125 having a piston 140 coupled to rotate a crankshaft 145 . The gas gap cover 130 defines a combustion chamber 150 together with the piston 140 . A fuel and air mixture (not shown) is periodically or cyclically introduced into combustion chamber 150 and ignited, causing thermal expansion of the exhaust gases, causing reciprocation of piston 140 , thereby causing crankshaft 145 to rotate.

[0078] Fuel is provided through at least one fuel injector 160 and air through at least one air intake 210 . Fuel is provided to fuel injector 160 at high pressure from fuel rail 170 in fluid communication with high pressure fuel pump 180 , which boosts fuel pressure from fuel source 190 . Each cylinder 125 has at leas...

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PUM

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Abstract

A low temperature cooling system (600) is for an internal combustion engine (110). The system comprises a coolant circuit (605) having a coolant pump (610), low temperature radiator (615), charged-air cooler (intercooler) (260) and a long-path exhaust gas recirculation cooler (LP-EGR cooler) (310). The intercooler is downstream of the radiator and the LP-EGR cooler is downstream of the intercooler and upstream of the radiator. A diesel exhaust fluid injector cooler (DEF cooler) (284) is preferably disposed between the intercooler and the LP-EGR cooler.

Description

technical field [0001] The present invention generally relates to a cooling system for an internal combustion engine, typically an automotive internal combustion engine. More specifically, the present invention relates to so-called "low-temperature" cooling systems, which are generally used to reduce the temperature of the combustion air introduced into the engine by means of a charge air cooler. Background technique [0002] Known internal combustion engines, such as compression ignition internal combustion engines (eg diesel engines) or spark ignition internal combustion engines (eg gasoline engines), operate by cyclically igniting the air / fuel mixture in the engine cylinders. Combustion of the air / fuel mixture produces hot exhaust gases, the expansion of which causes reciprocating motion of engine pistons coupled to turn a crankshaft. [0003] The heat generated by the combustion of fuel is partly dissipated by a so-called "high temperature" cooling system which consists...

Claims

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Application Information

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IPC IPC(8): F01P3/12F01P3/22
CPCF02M26/24F02M26/33F02M26/28F01P3/12F01P7/165F02B29/0443F01P3/16F01P3/18F01P5/10F01P7/14
Inventor J·德拉莫里纳C·M·米诺
Owner GM GLOBAL TECH OPERATIONS LLC
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