SYSTEM FOR COOLING VEHICLE-MOUNTED POWER CONTROL DEVICE AND METHOD FOR DIAGNOSING ABNORMALITY
First Claim
1. A system for cooling a power control device of a hybrid vehicle including an engine and a rotating electrical machine, the system comprising:
- a cooling device for cooling the power control device;
an electronic control device for controlling the cooling device; and
an intake temperature sensor that is arranged in an intake passage of the engine and detects an intake temperature, whereinthe electronic control device is configured to determine whether the vehicle is in a reference traveling state in which an intake amount to the engine is ensured to be greater than or equal to a reference intake amount,when determining that the vehicle is in the reference traveling state, the electronic control device is configured to determine presence or absence of abnormality in the cooling device by using an intake temperature detected by the intake temperature sensor, andwhen determining that the vehicle is not in the reference traveling state, the electronic control device is configured to refrain from determining presence or absence of abnormality in the cooling device.
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Accused Products
Abstract
A system for cooling a power control device of a hybrid vehicle includes a cooling device for cooling a power control device, an electronic control device for controlling the cooling device, and an intake temperature sensor. The electronic control device determine whether the vehicle is in a reference traveling state with an intake amount ensured to be greater than or equal to a reference intake amount. When determining that the vehicle is in the reference traveling state, the control device determines presence or absence of abnormality in the cooling device using an intake temperature detected by the intake temperature sensor. When determining that the vehicle is not in the reference traveling state, the control device refrains from determining presence or absence of abnormality in the cooling device.
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Citations
5 Claims
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1. A system for cooling a power control device of a hybrid vehicle including an engine and a rotating electrical machine, the system comprising:
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a cooling device for cooling the power control device; an electronic control device for controlling the cooling device; and an intake temperature sensor that is arranged in an intake passage of the engine and detects an intake temperature, wherein the electronic control device is configured to determine whether the vehicle is in a reference traveling state in which an intake amount to the engine is ensured to be greater than or equal to a reference intake amount, when determining that the vehicle is in the reference traveling state, the electronic control device is configured to determine presence or absence of abnormality in the cooling device by using an intake temperature detected by the intake temperature sensor, and when determining that the vehicle is not in the reference traveling state, the electronic control device is configured to refrain from determining presence or absence of abnormality in the cooling device. - View Dependent Claims (2, 3, 4)
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5. A method for diagnosing abnormality of a cooling device for cooling a power control device of a hybrid vehicle including an engine and a rotating electrical machine, wherein the vehicle includes an intake temperature sensor that is arranged in an intake passage of the engine and detects an intake temperature, the method comprising:
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determining whether the vehicle is in a reference traveling state in which an intake amount to the engine is ensured to be greater than or equal to a reference intake amount; refraining from determining presence or absence of abnormality in the cooling device when it is determined that the vehicle is not in the reference traveling state; and determining presence or absence of abnormality in the cooling device using an intake temperature detected by the intake temperature sensor as an ambient temperature when it is determined that the vehicle is in the reference traveling state.
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Specification