HYBRID DRIVE SYSTEM FOR A VEHICLE AND METHOD OF OPERATING THE HYBRID DRIVE SYSTEM
First Claim
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1. A hybrid drive system for a vehicle, comprising:
- an electric drive configured to provide a first propulsion drive;
an internal combustion engine configured to provide a second propulsion drives, the internal combustion engine comprising a heater configured to pre-heat a selected portion of the internal combustion engine;
a traction battery coupled to the heater and configured to provide electric power to the heater while the first propulsion drive and second propulsion driver are switched off, anda transmission configured to be operatively and selectively coupled to the internal combustion engine and the electric drive.
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Abstract
A hybrid drive system is provided for a vehicle. The hybrid drive system includes, but is not limited to a traction battery, an internal combustion engine and an electric drive. The internal combustion engine and the electric drive provide propulsion drives and are configured to be operatively and selectively coupled to a transmission. The internal combustion engine includes, but is not limited to a heater for pre-heating a selected portion of the internal combustion engine. The traction battery is coupled to the heater and configured so as to be able to provide electric power to the heater whilst the propulsion drives are switched off.
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Citations
27 Claims
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1. A hybrid drive system for a vehicle, comprising:
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an electric drive configured to provide a first propulsion drive; an internal combustion engine configured to provide a second propulsion drives, the internal combustion engine comprising a heater configured to pre-heat a selected portion of the internal combustion engine; a traction battery coupled to the heater and configured to provide electric power to the heater while the first propulsion drive and second propulsion driver are switched off, and a transmission configured to be operatively and selectively coupled to the internal combustion engine and the electric drive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of operating a hybrid drive system for a vehicle, the hybrid drive system comprising a traction battery, an internal combustion engine and an electric drive, the internal combustion engine and the electric drive providing propulsion drives, the internal combustion engine comprising a heater for pre-heating a selected portion of the internal combustion engine and the traction battery being coupled to the heater, the method comprising the steps of:
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identifying a first condition; supplying electric power from the traction battery to the heater in response to the first condition; and starting the propulsion drives after the supplying electric power from the traction battery to the heater in response to the first condition.
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- 19. The method according to claim 18, wherein the electric power is supplied to the heater from the traction battery before at least one of the propulsion drives are coupled to the transmission.
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20. The method according to claim 18, wherein a temperature indicative of a temperature of the internal combustion engine is measured and, if this temperature is below a predetermined minimum threshold value, performing the step of supplying electric power from the traction battery to the heater.
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21. The method according to claim 18, wherein a temperature indicative of an environmental temperature is measured and, if this temperature is below a predetermined minimum threshold value, performing the step of supplying electric power from the traction battery to the heater.
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25. The method according to claim 18, wherein the step of supplying electric power from the traction battery to the heater is conducted until a measured temperature is greater than a predetermined starting threshold temperature.
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26. The method according to claim 18, wherein the step of supplying electric power from the traction battery to the heater is conducted upon detection of at least one door opening.
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27. The method according to claim 18, wherein the step of supplying electric power from the traction battery to the heater is conducted upon an instruction from a remote device.
Specification