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Engine Cooling Syllabus, Day one, AM
Initial Technical
Survey; Introduction; History; Hardware; Design procedure outline; Design fundamentals; Basic thermodynamic equations; Engine
heat rejection; Tandem vs series orientation; Begin cooling design road map; Coolant pump and coolant system resistance curves;
Spark strategy; Engine power and torque; Transmission heat rejection; Air and coolant temperatures; Vehicle driving condition;
Radiator frontal area; Air-to-boil concept; Radiator selection; Tube length correction; Effectiveness; LMTD; NTU; Overall
heat transfer coefficient; Coolant flow and radiator degradation; Coolant pump flow and head;
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Engine Cooling Syllabus, Day one, PM
Continue road map;
Cooling fan; Viscous drive; Slip curves; Fan curves; Front end system resistance curves; Heat load contribution with added
AC condenser; Charge air cooler; Vehicle operating characteristics; WOT wheel horsepower; Rolling resistance; Aerodynamic
force coefficient; Tractive effort; Vehicle operating points- vehicle alone and with trailer, level highway and grade; Off
highway; Problem Set 1.
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Engine Cooling Syllabus, Day two, AM
Radiator performance;
Frontal area; aspect ratio; Seals; Down flow; Crossflow; Tandem; Heat transfer surfaces; Radiator design variables; radiator
comparitive performance at equivalent air side ressure drop; Number of tube side passes; Type of construction; Materials;
Fan and shroud; Radial-axial-mixed flow fans; Fan drives- electric motor, engine and hydraulic driven; Fan installation- blower
& draw through; Hybrid, Fan design parameters; Fan noise; Fan diameter; Number of blades; Fan out of shroud dimension (FOOS);
Fan tip to shroud clearance; Fan pulley ratio; Viscous drive cut-in temperature; Types of fan shrouds; Selection procedure;
Coolant pump cavitation; Suction pressure; Air in coolant; Deaeration; Erosion corrosion; Coolant boiling points; Deaeration
schematics; Oil coolers and oil cooler schematics; Converter RPM and slip; Coolants; Plumbing, Control devices; Thermostat,
Pressure caps-vented, constant pressure, open; Hot pressurized bottle; Hoses; Hose routing; Hose clamps; Deaeration and coolant
recovery; Bleeds; Inlet and outlet thermostats; Front end and underhood air exhaust; Bernoulli's equation; Pressure coefficient;
Front end air flow characterization; Viscous drives; Hysterisis; Fluid viscosity; selection of cut-in temperature; Electric
motors fan drives; Hydraulic fan drives; Fan and fan drive applications; Durability; Field vibration signature.
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Engine Cooling Syllabus, Day two, PM
Warranty; OEM and
Supplier roles and responsibilities; Functional objectives; development; Laboratory and field evaluation of vehicle cooling
systems; Lab equipment; Cooling system characterizaton; Service fill; Coolant flow recovery; Coolant level sensitivity; In-vehicle
pump curve; Vehicle front end system resistance and front end air flow; Static pressure profile; Mass air flow across the
front end; Heat balance and air flow; Non-uniformity correcton; WOT wheel horsepower; Vehicle tractive effort curves; Cooling
system confirmation; Towing dynamometer; Field trips; radiator seals; Fuel cell primer; Problem set 2.
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