DEFA Warmup Heater 12A 20A 35A EV Battery Charger Multicharger
Description
Setup
Contact heater vs Coolant heater
In order to evaluate which engine heater concept that is most efficient we have conducted tests with Euro 6 diesel engines using contact heaters, PTC heaters with pumps, and coolant element heaters.
Conclusions:
- A contact heater is most efficient in order to preheat the engine block and oil.
- A contact heater will increase the temperature in the engine oil approximately 30-35°C more than a coolant element heater.
- A contact heater will increase the temperature in the engine block approximately 20-25°C more than a coolant heater.
- A coolant heater will increase the temperature at the cylinder head approximately 30°C more than a contact heater.
- By using a coolant heater the cabin temperature will for the 16 first minutes of the drive be 3-5°C above the same as for a contact heater.
- Both the contact heater, the PTC coolant heater and the conventional coolant element heater are all almost reducing regulated emissions and fuel consumptions at the same level (less than 2% variation).
- A contact heater (300W) will normally use 42% less energy to preheat the engine, compared to a coolant heater (550W).
- Cold start: With WarmUp installed you start the drive with 22°C in the cabin, compared to reaching 20°C after 18 minutes of driving in a cold-started car.
- A contact heater will increase the temperature in the engine oil, and ensure the evaporation of diesel in the system to work in cold conditions.
Emission comparison related to a coldstart
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NexBolt Charger
