Electric-cooling fan control apparatus
JP2025167852APending Publication Date: 2025-11-07TOYOTA JIDOSHA KK
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Patent Information
- Application Number
- JP2024072817
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-11-07
AI Technical Summary
Technical Problem
In plug-in hybrid vehicles, the electric cooling fan is activated unnecessarily when the vehicle is supplying power externally, leading to inefficient battery power consumption due to continuous operation without engine cooling needs.
Method used
The electric cooling fan control device starts the fan simultaneously with engine start if the ignition power source was recently used, or after a standby time if it was not, based on a predetermined time threshold, ensuring it operates only when engine coolant cooling is necessary.
Benefits of technology
This approach improves battery power efficiency by ensuring the cooling fan operates only when needed, reducing unnecessary consumption.
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Smart Images
Figure 2025167852000001_ABST
Abstract
To provide an electric-cooling fan control apparatus capable of improving the electric expense of a battery by starting an electric cooling fan only in a case where a necessity arises to cool an engine coolant.SOLUTION: In a case where time is within a given period of time after an ignition power supply 16 had been started previously when starting an engine 11 is started while power of a battery 13 is externally feeding, a control apparatus starts an electric cooling fan 15 simultaneously with starting the engine 11; whereas in a case where time has elapsed more than the given period of time after the ignition power supply 16 had been started previously, the control apparatus starts the electric cooling fan 15 when a standby period has elapsed after starting the engine 11.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Control device of hybrid vehicle
JP2015067200A