Quote:
Originally Posted by JanGeo
I wonder if they will ever think to put a small electric heater in a gas powered car to take the edge off when the engine is cold. Most of the alternators can provide plenty of power to keep the battery charged with a 50 amp heater load.
|
The VW TDI diesels have such supplemental heaters. There are three of them located near the head in the coolant supply to the cabin heater core. These heaters are about 250 watts each and are controlled such that none, one, or the other two, or all three, can be working depending on the coolant temperature. The electrical load of all three is darned close to 50 amperes, but the TDI have a 120 amp alternator. It needs to be sized such to cope with these heaters, the four cylinder head glow plugs (each similar wattage), headlights, fan on high, rear defroster, seat heaters, side mirror heaters, washer spray heaters,...