Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
Vehicle heater with an auxiliary heating apparatus that is operable independent of the engine, said heating apparatus being disposed in a vehicle heating circuit, which contains a vehicle heat exchanger which radiates heat to the vehicle interior, downstream of the heating apparatus, said heating circuit being connected to an engine coolant circuit, wherein a temperature sensor in the heating apparatus, is provided for detecting the temperature of a heat exchange medium acted upon by the heating apparatus, another temperature sensor is provided for detecting the temperature at an output area of the vehicle heat exchanger and wherein control means is provided for controlling operation of the heating apparatus based upon a temperature difference value determined from the temperature values detected by said temperature sensors.
Claim 2
Dependent Claim
124 words
Vehicle heater with an auxiliary heating apparatus that is operable independent of the engine, said heating apparatus being disposed in a vehicle heating circuit, which contains a vehicle heat exchanger which radiates heat to the vehicle interior, downstream of the heating apparatus, said heating circuit being connected to an engine coolant circuit, wherein a temperature sensor in the heating apparatus, is provided for detecting the temperature of a heat exchange medium acted upon by the heating apparatus, another temperature sensor is provided for detecting the temperature at an output area of the vehicle heat exchanger and wherein control means is provided for controlling operation of the heating apparatus based upon a temperature difference value determined from the temperature values detected by said temperature sensors.
Claim 3
Dependent Claim
31 words
Vehicle heater according to claim 1, wherein said control means is operable for turning on said heating apparatus when the determined temperature difference value is below a predetermined temperature difference value.
Claim 4
Dependent Claim
36 words
Vehicle heater according to claim 2, wherein the heating apparatus, remains in a stand-by mode as long as a predetermined threshold value for the temperature detected by the other temperature sensor is not reached or exceeded.
Claim 5
Dependent Claim
20 words
Vehicle heater according to claim 3, wherein the output of the other temperature sensor is connected to said control means.
Claim 6
Dependent Claim
29 words
Vehicle heater according to claim 4, wherein the control means is provided with means for presetting said predetermined threshold value for the temperature detected by the other temperature sensor.
Claim 7
Dependent Claim
30 words
Vehicle heater according to claim 5, wherein said control means is operable to implement said standby mode only after a cutoff of said heating apparatus has occurred at least once.
Claim 8
Dependent Claim
36 words
Vehicle heater according to claim 1, wherein the heating apparatus, remains in a stand-by mode as long as a predetermined threshold value for the temperature detected by the other temperature sensor is not reached or exceeded.
Claim 9
Dependent Claim
20 words
Vehicle heater according to claim 7, wherein the output of the other temperature sensor is connected to said control means.
Claim 10
Dependent Claim
29 words
Vehicle heater according to claim 8, wherein the control means is provided with means for presetting said predetermined threshold value for the temperature detected by the other temperature sensor.
Claim 11
Dependent Claim
30 words
Vehicle heater according to claim 9, wherein said control means is operable to implement said stand-by mode only after a cutoff of said heating apparatus has occurred at least once.
Claim 12
Dependent Claim
30 words
Vehicle heater according to claim 3, wherein said control means is operable to implement said stand-by mode only after a cutoff of said heating apparatus has occurred at least once.