75
N55 Engine
Cooling System
The cooling system of the N55 is enhanced with additional oil cooling.
Two different types of oil cooling systems are used depending on the model and applica-
tion. In the “hot climate” version, heat transfer from the engine oil to the engine coolant is
avoided by separating the oil cooler from the engine coolant circuit. The other version
uses an auxiliary radiator in combination with an oil to coolant heat exchanger bolted to
the oil filter housing. The auxiliary radiator enhances cooling efficiency by adding surface
area to the cooling system.
N55, cooling system
Summary of Contents for N55
Page 29: ...29 N55 Engine N55 oil passages front view...
Page 35: ...35 N55 Engine N55 crankcase ventilation naturally aspirated mode...
Page 37: ...N55 crankcase ventilation turbocharged boost mode 37 N55 Engine...
Page 57: ...N55 Air Intake and Exhaust System 57 N55 Engine...
Page 83: ...83 N55 Engine Circuit Diagram N55 circuit diagram connection to vehicle electrical system...
Page 85: ...85 N55 Engine Engine Cooling Circuit Diagram N55 circuit diagram engine cooling...
Page 88: ...88 N55 Engine Digital Motor Electronics Circuit Diagram N55 MEVD17 2 Circuit Diagram...