| 摘要 |
A heater for the passenger compartment of a motor vehicle comprises a fuel burner (4) supplied with combustion air by a blower (41) and a heat exchanger (5) by which heat from the combustion gases from the burner (4) is transferred to heating air drawn through the heat exchanger by a blower (52). To control the combustion of the fuel in the burner (4), a flame sensor (44) having a temperature -dependent resistance wire senses the combustion conditions in the burner (4) and sends a signal, which is dependent on these conditions, to a control unit (6) which in turn controls the supply of electric power to a fuel atomizer (42) in the burner and hence controls the temperature of the atomizer. The unit (6) may also control a fuel supply valve (46), the blower (41) and an igniting glow plug (43). For this purpose it is also supplied with signals from a sensor (12) which senses the cooling water temperature of the vehicle engine (1), an engine load sensor (13), an atmospheric temperature senser (100), a temperature sensor (51) in the heat exchanger and a temperature sensor (55) which senses the temperature of the air supplied to the passenger compartment. |
