COOLING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH EXHAUST GAS RECIRCULATION (EGR)

摘要

A cooling system pumps coolant through parallel connections to a crankcase a nd an EGR cooler in an internal combustion engine with exhaust gas recirculation (EGR). A crankcase supply conduit connects a coolant pump to a coolant channel formed by the crankcase. The coolant channel is connected to a coolant chamber formed by t he cylinder head. An EGR cooler supply conduit connects the EGR cooler to the coolant pump. The EGR cooler is connected to the coolant chamber. Coolant flows from the coola nt pump into the crankcase supply conduit and into the EGR cooler supply conduit at essentially the same time and at essentially the same temperature. The coolant circulates from th e coolant pump through the coolant channel into the coolant chamber. The coolant circulates from the coolant pump through the EGR cooler into the coolant chamber. The coolant returns to the coolant pump from the coolant chamber in the cylinder head.