The burner heating system includes a heating unit (12) with a burner (14) and a heat exchanger (16) connected to the engine coolant circuit (18). The heating unit is controlled by a control unit (32). A summer/winter difference unit supplies the control un...

The air heater, especially for a vehicle interior, has two heater units (10,12) with an air flow path between them. An additional fan blower (50) generates a flow from the second to the first heating unit, into a mixing chamber (14) with air channels (40),...

A unit includes a support structure (2) with first and second intakes (3, 4) defined therein for air from inside and outside the compartment respectively, and at least one outlet (5-7) for conveying air treated in the unit (1) into the passenger compartmen...

The auxiliary water heater (30) is for a vehicle (10), the engine (14) of which has a coolant circuit (16) with a cooling unit (18, 20, 22). The cooling unit can be coupled to a heating circuit (26) of the water heater, so that the water heater will not be...

Disclosed is an internal combustion engine (1) having a combustion heater (17) connected in bypass via an air supply path (33) and a burned gas discharging path (35) as components thereof to an intake path (5) of the internal combustion engine. A compresso...

The engine has an operating heat exchanger (5) connected to the engine cooling circuit (3) and exposed to exhaust gas in a controled manner and a heat exchanger (6) for a heating/air conditioning system. A return line (11) from the operating heat exchanger...