초록 ▼

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 c

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.

대표청구항 ▼

[ What is claimed is:] [1.]1. An exhaust gas cooling system for cooling exhaust gas in the exhaust gas recirculation system of an internal combustion engine prior to admixing with charge air for the engine, the exhaust gas cooling system comprising:a primary cooling loop including:a primary radiator

[ What is claimed is:] [1.]1. An exhaust gas cooling system for cooling exhaust gas in the exhaust gas recirculation system of an internal combustion engine prior to admixing with charge air for the engine, the exhaust gas cooling system comprising:a primary cooling loop including:a primary radiator; anda primary pump that circulates coolant through the primary cooling loop to the primary radiator; anda secondary cooling loop including:secondary radiator;a secondary exhaust gas cooler in fluid communication with the secondary radiator; anda secondary pump that circulates coolant through the secondary cooling loop from the secondary exhaust gas cooler to the secondary radiator and back to the secondary exhaust gas cooler.