Method of heating the interior of a vehicle

• US 9,963,013 B2
• Filed: 07/24/2014
• Issued: 05/08/2018
• Est. Priority Date: 07/25/2013
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Satzger, Peter, Herbolzheimer, Robert
• Primary Examiner(s): Huson, Gregory
• Assistant Examiner(s): Namay, Daniel E
• Application Number:
  US14/339,683
• Publication Number:
  US 20150028116A1
• Time in Patent Office: 1,384 Days
• Field of Search: 237 5, 237 2 A, 237 123 R
• CPC Class Codes: B60H 1/004 for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
• CPC Class Codes: B60H 1/00742 by detection of the vehicle occupants' presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors
• CPC Class Codes: B60H 1/2218 controlling the operation of electric heaters
• CPC Class Codes: B60H 1/2227 Electric heaters incorporated in vehicle trim components, e.g. panels or linings
• CPC Class Codes: B60H 2001/00214 Devices in front of the passenger compartment
• CPC Class Codes: B60H 2001/00228 Devices in the interior of the passenger compartment
• CPC Class Codes: B60H 2001/2237 supplementary heating, e.g. during stop and go of a vehicle
• CPC Class Codes: B60H 2001/224 automatic operation, e.g. control circuits or methods
• CPC Class Codes: B60H 2001/2265 related to the quantity of heat produced by the heater

Abstract

A method of heating the interior of a vehicle is provided. The vehicle has a central heating system and several decentralized heating surfaces constructed as infrared radiators. The temperature of the vehicle interior is controllable by the central heating system and/or the decentralized heating surfaces corresponding to a heating demand of at least one vehicle occupant. For controlling the temperature of the vehicle interior corresponding to a heating demand, a power distribution takes place between the central heating system and the decentralized heating surfaces as a function of specified distribution demands.

Claims

1. A method of heating an interior of a vehicle equipped with a central heating system and several decentralized heating surfaces in the form of infrared radiators, the method comprising the acts of:

controlling a temperature of the interior of the vehicle by the central heating system and/or the decentralized heating surfaces in response to a heating demand, wherein

the act of controlling the temperature includes an inversely proportional power distribution that takes place between the central heating system and the decentralized heating surfaces as a function of specified distribution demands.

2. The method according to claim 1, wherein the inversely proportional power distribution takes places as a function of a manually and/or automatically settable distribution demand.

3. The method according to claim 2, wherein the inversely proportional power distribution automatically takes place such that the temperature in the interior of the vehicle is controllable as efficiently as possible corresponding to the heating demand.

4. The method according to claim 3, wherein the controlling of the temperature in the interior of the vehicle as efficiently as possible is performed in order to consume energy, improve comfort, or to both consume energy and improve comfort.

5. The method according to claim 1, wherein the inversely proportional power distribution automatically takes place such that the temperature in the interior of the vehicle is controllable as efficiently as possible corresponding to the heating demand.

6. The method according to claim 1, further comprising the act of:

determining the power of the decentralized heating surfaces required for controlling the temperature of the interior as a function of a thermal condition of the interior, a specified desired temperature, and/or a current ambient temperate, wherein

the thermal condition of the interior is determined as a function of the current interior temperature of the vehicle and/or of a determined desired heat output.

7. The method according to claim 6, wherein the inversely proportional power distribution is influenced as a function of a number of occupants in the vehicle.

8. The method according to claim 1, wherein the inversely proportional power distribution is influenced as a function of a number of occupants in the vehicle.

9. The method according to claim 1, wherein the inversely proportional power distribution is influenced as a function of a measured power consumption and/or a power consumption to be expected of the central heating system and/or the decentralized heating surfaces.

10. The method according to claim 9, wherein the inversely proportional power distribution is influenced as a function of the measured power consumption and/or the power consumption to be expected of the decentralized heating surfaces relative to a possible power output of an onboard power supply system that supplies energy for controlling the decentralized heating surfaces.

11. The method according to claim 1, wherein the inversely proportional power distribution is influenced as a function of a sum of the power consumption to be expected of the decentralized heating surfaces to be actuated and the central heating system or in a correspondingly reduced operation compared to the power consumption to be expected of the central heating system when solely operating.

12. The method according to claim 1, wherein the vehicle is a hybrid or electric vehicle.

13. A method of heating an interior of a vehicle equipped with a central heating system and several decentralized heating surfaces in the form of infrared radiators, the method comprising the acts of:

determining whether a predetermined number of people are inside the vehicle;

if a number of people inside the vehicle is greater than the predetermined number of people, controlling a temperature of the interior of the vehicle using only the central heating system; and

if a number of people inside the vehicle is less than the predetermined number of people, determining a power demand of the infrared radiators, prior to deciding which of the central heating system and the several decentralized heating surfaces to use.

14. The method of claim 13, wherein if the number of people inside the vehicle is less than the predetermined number of people, and a power demand of the infrared radiators is greater than a given amount of electric power, using only the central heating system.

15. The method of claim 14, wherein if the number of people inside the vehicle is less than the predetermined number of people, and the power demand of the infrared radiators is lower than the given amount of electric power, calculating a combined power demand of the infrared radiators and the central heating system.

16. The method of claim 15, wherein if the combined power demand of the infrared radiators and the central heating system is greater than a power demand of only the central heating system, using only the central heating system.

17. The method of claim 16, wherein if the combined power demand of the infrared radiators and the central heating system is lower than a power demand of only the central heating system, using both the central heating system and the several decentralized heating surfaces.

18. The method of claim 17, wherein in the using of both the central heating system and the several decentralized heating surfaces an inversely proportional power distribution takes place between the central heating system and the several decentralized heating surfaces.

19. The method of claim 17, wherein the inversely proportional power distribution takes place as a function of specified distribution demands.