SSP 109 – Auxiliary heater in the Audi V8
INDEX
The water heater BW 46, which operates independently of the engine, is used in conjunction with the vehicle’s heating system for:
Heating the passenger compartment
Defrosting the vehicle windows
Shortening the warm-up phase after a cold start
Preheating the engine
Contents
Auxiliary heater in the Audi V8
Water heater BBW 46
Operation
Fuel system
Metering pump
Combustion air blower
Circulation pump
Burner head with combustion tube
Heat exchanger and heating pipe
Electrical components
Functional diagram
Safety shut-offs / fault shutdowns