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Supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device

A technology of EGR cooler and cooling device, applied in charging system, mechanical equipment, engine components, etc., can solve the problems of slow start-up and warm-up process of engine, unable to obtain optimal mixing temperature, excessive cooling of load exhaust gas, etc. Dynamic response performance, novel design, the effect of reducing exhaust gas flow resistance

Active Publication Date: 2014-05-07
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing supercharged diesel engine EGR system cooling device leads to excessive cooling of part-load exhaust gas, thereby reducing the reliability of components, the inability to obtain the best mixing temperature at each working point, and the slow process of engine startup and warm-up, etc., to provide An intelligent cooling device for supercharged diesel engine EGR system

Method used

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  • Supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device
  • Supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device
  • Supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] see Figure 2-Figure 3 , an intelligent cooling device for a supercharged diesel engine EGR system, comprising an EGR mixer 3, a mechanical water pump 4, an electronically controlled fan 5, a radiator 6, a thermostat 11, an EGR cooler 13, an electronically controlled EGR valve 14, an engine ECU 18, Temperature sensor 19, exhaust gas intercooler 8 and an electronically controlled two-position three-way valve 12. The EGR cooler 13 is provided with an exhaust gas channel and a first cooling water channel 22, and the water outlet of the mechanical water pump 4 is respectively connected with the water inlet of the first cooling water channel 22 and the water inlet of the engine cooling water channel 21, and the water pump 4 is used for circulating cooling, to bring the heat generated by the engine and the EGR cooler 13 to the radia...

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Abstract

The invention discloses a supercharged diesel engine EGR (Exhaust Gas Recirculation) system intelligent cooling device, comprising an EGR mixer (3), a mechanical water pump (4), an electric control fan (5), a radiator (6), a thermolator (11), an EGR cooler (13), an electric control EGR valve (14), an engine ECU (Electronic Control Unit) (18), a temperature sensor (19), an exhaust gas intercooler (8) and an electric control two-position three-way valve (12), wherein an inlet of the electric control two-position three-way valve (12) is communicated with a gas outlet of the EGR cooler (13); outlets in two ends of the electric control two-position three-way valve (12) are respectively communicated with an exhaust gas inlet of the EGR mixer (3) and a gas inlet of the exhaust gas intercooler (8); a gas outlet of the exhaust gas intercooler (8) is communicated with the exhaust gas inlet of the EGR mixer (3); the electric control EGR valve (14), the electric control fan (5), the temperature sensor (19) and the electric control two-position three-way valve (12) are respectively connected with the engine ECU (18) electrically.

Description

technical field [0001] The invention relates to an exhaust gas recirculation system of a supercharged diesel engine, more specifically relates to an intelligent cooling device for an EGR system of a supercharged diesel engine, and belongs to the technical field of exhaust gas reuse. Background technique [0002] With the increasing national automobile exhaust emission standards, the engine exhaust after-treatment system has become an indispensable system for the engine; the main harmful substances emitted by engine combustion are nitrogen oxides (NOx) and various particulates (PM). To reduce the emission of toxic gases, the EGR system (Exhaust Gas Recirculation, exhaust gas recirculation system) is usually used to achieve emission reduction. The EGR system introduces part of the exhaust gas after engine combustion into the intake system, mixes it with fresh mixed gas, and then enters the cylinder to participate in combustion, reducing the oxygen content in the combustion cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/07F02M26/13F02M26/24F02M26/42
CPCY02T10/12
Inventor 陈伟建李冀朱丹丹
Owner DONGFENG COMML VEHICLE CO LTD
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