When a vehicle is driven, only 40 to 60% of the energy available from the fuel is used to propel the vehicle.
The rest of the energy is lost as waste heat and transferred to the water surrounding the engine and dissipated to the outside air by the vehicle radiator.
In winter, this hot water is circulated by the engine pump to the cabin heater to keep the passenger compartment warm.
This engine coolant contains a large amount of latent energy that is available to the cabin heater as long as the engine pump keeps running and circulating it to the heater.
As soon as the engine is turned off, circulation stops and the heater begins to rapidly cool blowing cold air in a few minutes. Using a small magnetically coupled pump, the AUTOTHERM system continues circulation of hot engine coolant to the heater when the engine is off, operates the heater fan and effectively continues vehicle interior heating with the engine off.
This is thousands of times more energy efficient than idling.
- How does the AUTOTHERM ERS system work?
- I run overnight in a sleeper cab and stop to rest for 3 or 4 hours. Is the AUTOTHERM ERS system able to keep the sleeper warm?
- Can I install the AUTOTHERM ERS system myself?
- How long does it take to install the system on a truck?
- How much fuel can the AUTOTHERM ERS system save me?
- If the system runs such a long time, won’t this run the battery down?
- Why do you call AUTOTHERM ERS a system?
- Do I need my ignition key to run the AUTOTHERM ERS system?
- How long will AUTOTHERM ERS systems keep a stationary truck warm?
- Why is the AUTOTHERM ERS system called an energy recovery system?