Back to results
US 3,986,665 AGranted
Heating system for vehicles having an internal combustion engine
AssigneeJ. Eberspacher
InventorsSiegfried Kofink, Fritz Reuter
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeJ. Eberspacher
InventorsSiegfried Kofink, Fritz Reuter
Estimating the term…
A heating system for a vehicle passenger compartment provides a heat reservoir wherein heat energy from the engine exhaust means may be stored until needed to heat the passenger compartment, for example, when the vehicle is operated with a cold running engine. The reservoir absorbs the heat from the engine exhaust pipe through absorption means which may include sodium as a heat transmission medium and which operate to limit the heat transfer between the exhaust system and the reservoir to levels of exhaust gas temperature above a predetermined minimum. A vacuum chamber surrounding the heat reservoir may have a heat transfer fluid, such as freon, introduced therein to transmit the stored heat to air which is to be supplied to the vehicle passenger compartment.
A heating system particularly suitable for heating the interior of a vehicle having an internal combustion engine including exhaust gas means, said system comprising heat reservoir means adapted to store heat energy, heat absorption means for enabling absorption of heat energy by said heat reservoir means from said engine exhaust gas means, means for supplying air to the interior of said vehicle, and means for controlling heat emission from said reservoir means, said heat emission controlling means selectively enabling emission of heat energy stored in said reservoir means to air supplied to the interior of said vehicle by said air supplying means, said heat emission controlling means comprising insulating means producing a heat insulating effect obstructing emission of the heat energy stored in said reservoir means, and heat transfer means for selectively overcoming said heat insulating effects of said insulating means to enable emission of stored heat energy from said reservoir means.
A heating system for transmitting heat energy to a fluid to be heated comprising a heat source operating within a given temperature range, heat reservoir means adapted to store therein heat energy, heat absorption means effecting heat transfer between said heat source and said heat reservoir when said heat source is above a predetermined temperature within said given temperature range and preventing heat transfer therebetween when said heat source is below said predetermined temperature, means defining an insulating vacuum chamber about said heat reservoir means, means for providing a fluid heat transfer medium adapted to be introduced into said vacuum chamber, control means for selectively enabling introduction and withdrawal of said fluid heat transfer medium to and from said vacuum chamber, and means for flowing said fluid to be heated in heat transfer relationship with said heat reservoir means when said fluid heat transfer medium is introduced into said vacuum chamber to enable transfer of heat energy from said reservoir means to said fluid to be heated through said fluid heat transfer medium.
Dependencies are inferred from the claim text.