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1. 发明授权

US06244256B1 High-temperature coolant loop for cooled exhaust gas recirculation for internal combustion engines 有权
标题翻译：用于内燃机冷却废气再循环的高温冷却液回路
公开(公告)号：US06244256B1
公开(公告)日：2001-06-12
申请号：US09413873
申请日：1999-10-07
申请人： John C. Wall , Markus Flik , Hans Lange
发明人： John C. Wall , Markus Flik , Hans Lange
IPC分类号： F02B4708
CPC分类号： F02B29/0425 , F02M26/05 , F02M26/16 , F02M26/24 , F02M26/28 , Y02T10/146
摘要： An EGR system for an internal combustion engine has a separate, secondary high-temperature cooling loop, in addition to a primary cooling loop. In the secondary cooling loop, coolant flows through a secondary high-temperature exhaust gas cooler, which is located upstream of the primary exhaust gas cooler. A large amount of heat is transferred from the exhaust gases to the coolant in the secondary high-temperature cooling loop. The heat absorbed by the high-temperature coolant is rejected in a secondary high-temperature radiator. Heat absorbed by the primary coolant is rejected in a primary radiator. The two radiators occupy the same amount of frontal area as a single radiator used in a conventional single-stage EGR cooling system, but overall reject more heat to the ambient. In an alternate arrangement, the EGR system for a liquid-cooled internal combustion engine has a single exhaust gas cooler which is cooled by an EGR cooling loop that is independent of the engine cooling system. The EGR cooling loop includes a secondary radiator located adjacent the primary engine cooling radiator, and the two radiators together occupy the same frontal area as a single radiator used in a conventional single-stage EGR cooling system, but overall reject more heat to the ambient.
摘要翻译：除了主冷却回路之外，用于内燃机的EGR系统具有单独的二次高温冷却回路。在二次冷却回路中，冷却剂流过位于主排气冷却器上游的二级高温废气冷却器。在二次高温冷却回路中，大量的热量从废气转移到冷却剂。高温冷却剂吸收的热量在二次高温散热器中被排除。主冷却剂吸收的热量在初级辐射器中被排除。两个散热器与常规单级EGR冷却系统中使用的单个散热器占据相同的正面面积，但是总体上将更多的热量排除到环境中。在替代布置中，用于液冷内燃机的EGR系统具有单独的废气冷却器，其被独立于发动机冷却系统的EGR冷却回路冷却。 EGR冷却回路包括位于主发动机冷却散热器附近的次级散热器，并且两个散热器一起占据与常规单级EGR冷却系统中使用的单个散热器相同的前部区域，但是总体上将更多的热量排除到环境中。

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