Internal-combustion engines – Cooling – With cooling of additional parts or materials
Reexamination Certificate
2005-12-02
2010-10-12
Kamen, Noah (Department: 3741)
Internal-combustion engines
Cooling
With cooling of additional parts or materials
C123S1960AB
Reexamination Certificate
active
07810457
ABSTRACT:
A system and method for controlling the temperature of the engine oil of an internal combustion engine of a motor vehicle are provided. The system includes an engine oil circuit for controlling the temperature of the engine oil, which engine oil circuit includes the internal combustion engine and a coolant/engine-oil heat exchanger; and a coolant circuit for controlling the temperature of the internal combustion engine, which coolant circuit in a main branch, includes the internal combustion engine, a coolant cooler and a first coolant pump and, in an auxiliary branch downstream of the coolant cooler, includes the coolant/engine-oil heat exchanger and a second coolant pump. The heat of the engine oil can thereby be dissipated via the coolant/engine-oil heat exchanger to the coolant and further via the coolant cooler to the environment. Specifically, in the case of a limited cooling capacity of the air/engine-oil cooler, it is thereby possible by the low temperature coolant and by the pumped coolant quantity to ensure suitable engine oil temperature control.
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Blassnitz Timo
Wiech Oliver
Crowell & Moring LLP
Daimler AG
Kamen Noah
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