JP2020026141A - Hybrid vehicle - Google Patents

Abstract

To provide a hybrid vehicle which can restrain failure to send out cooling oil resulting from viscosity of the cooling oil even if temperature in the cooling oil is below prescribed temperature.SOLUTION: The hybrid vehicle comprises a motor and an engine which are a power source, a generator capable of electrically generating by functioning the engine as the power source, an oil cooling system capable of cooling the motor and the generator by the cooling oil, and a heater system capable of using cooling water warmed by operation of the engine as a heat source. The hybrid vehicle comprises a heat exchanger which is capable of supplying the cooling water warmed by the operation of the engine and is capable of thermally exchanging between the cooling water warmed by the operation of the engine and the cooling water accumulated in an oil pan, and a control device which supplies the cooling water warmed by the operation of the engine to the heat exchanger if temperature in the cooling oil accumulated in the oil pan is below prescribed temperature.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a hybrid vehicle.

  Patent Literature 1 discloses an oil circulation device for a vehicle. Such an oil circulation device for a vehicle includes an oil circulation path that circulates cooling oil supplied to a motor, an oil pump that is provided in the oil circulation path and that pumps cooling oil in the oil circulation path, and a cooling oil that flows through the oil circulation path. And a heating means for heating the cooling oil flowing through the oil circulation path by using the exhaust gas of the engine as a heat source when the engine is driven. The oil circulation path includes a cooling path for cooling the cooling oil by the cooling means, a heating path provided in parallel with the cooling path and capable of heating the cooling oil by the heating means, and a cooling path between the cooling path and the heating path. And a switching unit for switching the flow. A first state in which the cooling oil flows through the cooling path to cool the cooling oil by the cooling means; a second state in which the cooling oil flows through the heating path when the engine is not driven; A heating control unit for controlling the operation of the heating unit and a switching control unit for controlling the operation of the switching unit for setting a third state for flowing the oil through the heating path and heating the cooling oil by the heating unit; And

  The oil circulating device for a vehicle disclosed in Patent Literature 1 uses a control function of a heating control unit and a switching control unit to flow cooling oil through a cooling passage and to cool the cooling oil by a cooling unit, and to prevent the engine from being driven. A second state in which the cooling oil flows through the heating path, and a third state in which the cooling oil flows through the heating path and is heated by the heating means to which the exhaust gas is supplied when the engine is driven. It is said that the fluidity can be maintained by setting the temperature of the cooling oil in an appropriate range to maintain lubricity and performance of a portion to which the cooling oil is supplied, such as a motor provided in the oil circulation path.

JP-A-2006-117381

  In the oil circulation system for a vehicle disclosed in Patent Document 1, when the temperature of the cooling oil is lower than a predetermined range, the cooling oil flows through the heating path to supply exhaust gas when the engine is driven. Therefore, if the exhaust gas is not sufficiently heated, the cooling oil will not be warmed even if the cooling oil flows through the heating path.

  In view of the above-mentioned circumstances, at least one embodiment of the present invention is configured to prevent a failure in sending the cooling oil due to the viscosity of the cooling oil stored in the oil pan, even when the temperature of the cooling oil is lower than a predetermined temperature. It is an object of the present invention to provide a hybrid vehicle that can be suppressed.

  (1) A hybrid vehicle according to at least one embodiment of the present invention includes a motor and an engine as power sources, a generator capable of generating power using the engine as a power source, and an oil capable of cooling the motor and the generator with cooling oil. A hybrid vehicle including a cooling system and a heater system capable of using cooling water heated by operation of the engine as a heat source, wherein the oil cooling system is provided in a lower region of the motor and the generator, An oil pan capable of storing cooling oil, wherein the hybrid vehicle is further capable of supplying cooling water heated by the operation of the engine, wherein the cooling water and the oil pan heated by the operation of the engine are further provided. A heat exchanger capable of exchanging heat with the cooling oil stored in the Temperature of the cooling oil stored in Lupine and a control device for supplying to the heat exchanger cooling water warmed by the operation of the engine is less than a predetermined temperature.

  According to the configuration (1), the control device supplies the cooling water heated by the operation of the engine to the heat exchanger when the temperature of the cooling oil stored in the oil pan is lower than the predetermined temperature. Heat exchange is performed between the cooling water warmed by the operation of the engine and the cooling oil stored in the oil pan. Accordingly, even when the temperature of the cooling oil is lower than the predetermined temperature, the cooling oil stored in the oil pan is warmed, the viscosity of the cooling oil stored in the oil pan is reduced, and the cooling oil stored in the oil pan is reduced. Insufficient delivery of cooling oil due to oil viscosity can be suppressed.

  (2) In some embodiments, in the configuration of (1), the heat exchanger is installed inside the oil pan and can be immersed in cooling oil stored in the oil pan.

  According to the above configuration (2), the heat exchanger is installed inside the oil pan and is immersed in the cooling oil stored in the oil pan. Heat exchange is efficiently performed with the stored cooling oil. Thereby, the cooling oil stored in the oil pan is efficiently warmed.

  (3) In some embodiments, in the configuration of (1) or (2), the heater system includes a hot water passage capable of circulating cooling water heated by operation of the engine, and The cooling water connected to the hot water passage and heated by the operation of the engine can be supplied to the hot water passage.

  According to the configuration of (3), the heat exchanger is connected to the hot water passage, and the cooling water heated by the operation of the engine is supplied from the hot water passage, so that the cooling water heated by the operation of the engine is heated. There is no need to separately provide a passage for supplying the exchanger.

  (4) In some embodiments, in any one of the above-mentioned constitutions (1) to (3), the oil pan further includes a bypass valve capable of bypassing the heat exchanger. When the temperature of the stored cooling oil is equal to or higher than a predetermined temperature, the bypass valve causes the heat exchanger to bypass.

  According to the configuration of (4), the control device causes the bypass valve to bypass the heat exchanger when the temperature of the cooling oil stored in the oil pan is equal to or higher than the predetermined temperature. It is possible to suppress the oil temperature from becoming unnecessarily high.

  (5) In some embodiments, in the configuration of (3), an electric hot water heater is provided in the hot water passage and capable of heating cooling water, and the control device is stored in the oil pan. When the temperature of the cooled oil is lower than a predetermined temperature, the electric hot water heater is operated.

  According to the configuration of (5), the control device activates the electric hot water heater when the temperature of the cooling oil stored in the oil pan is lower than the predetermined temperature. The heated cooling water can be further warmed. Thus, heat exchange between the cooling water circulating in the hot water passage and heated by the operation of the engine and the cooling oil stored in the oil pan can be promoted. As a result, the cooling oil stored in the oil pan can be warmed at an early stage.

  (6) In some embodiments, in any one of the above-described constitutions (1) to (5), the generator is disposed below the motor in the direction of gravity, and the oil pan is disposed below the gravity of the generator. It is installed in the area below the direction.

  According to the above configuration (6), the generator is installed in the lower area of the motor in the direction of gravity, and the cooling oil is stored in the oil pan installed in the lower area of the generator in the direction of gravity. Therefore, it is not necessary to provide an oil pan for each of the generator and the motor.

  According to at least one embodiment of the present invention, even when the temperature of the cooling oil is lower than the predetermined temperature, the cooling oil stored in the oil pan is warmed, and the viscosity of the cooling oil stored in the oil pan decreases. In addition, it is possible to suppress poor delivery of the cooling oil due to the viscosity of the cooling oil stored in the oil pan.

FIG. 1 is a diagram schematically illustrating a configuration of a hybrid vehicle according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an arrangement of a motor and a generator illustrated in FIG. 1. FIG. 3 is a radial sectional view of the generator shown in FIG. 2. FIG. 2 is a diagram schematically illustrating a configuration of a heater system illustrated in FIG. 1. FIG. 2 is a flowchart for explaining control contents of the oil cooling system shown in FIG. 1.

  Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. Absent. For example, expressions representing relative or absolute arrangement such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are strictly described. Not only does such an arrangement be shown, but also a state of being relatively displaced by an angle or distance that allows the same function to be obtained. In addition, for example, an expression representing a shape such as a square shape or a cylindrical shape not only represents a shape such as a square shape or a cylindrical shape in a strictly geometrical sense, but also has a concavo-convex portion as long as the same effect can be obtained. A shape including a chamfered portion and the like is also represented. On the other hand, the expression “comprising”, “comprising”, “including”, “including”, or “having” one component is not an exclusive expression excluding the existence of another component.

  FIG. 1 is a diagram schematically showing a configuration of a hybrid vehicle 1 according to one embodiment of the present invention. FIG. 2 is a diagram showing an arrangement of the motor 2 and the generator 4 shown in FIG. FIG. 3 is a radial cross-sectional view of the generator 4 shown in FIG. FIG. 4 is a diagram schematically showing a configuration of the heater system 9 shown in FIG. FIG. 5 is a flowchart for explaining the control contents of the oil cooling system 8 shown in FIG.

  As shown in FIG. 1, a hybrid vehicle 1 according to one embodiment of the present invention uses a motor 2 and an engine 3 as power sources.

  The hybrid vehicle 1 includes a motor 2, an engine 3, a generator 4, a power drive unit 5, and an integrated control device 6 in an engine room 11 provided at a front portion of the vehicle, and a driving battery (not shown) under the floor of the vehicle. It has.

  The motor 2 is, for example, an AC motor, and for example, a permanent magnet type synchronous motor is employed. The motor 2 is provided with a temperature sensor 21. The temperature sensor 21 installed in the motor 2 can measure the temperature of the motor 2, and is connected to, for example, a motor control unit 51 described later, and the temperature of the motor 2 is managed by the motor control unit 51.

  The engine 3 is a water-cooled engine. The engine 3 is connected to an engine control device 61, and the engine 3 is controlled by the engine control device 61.

  The water-cooled engine has a water jacket (not shown) inside. The water jacket is for cooling the engine, and is filled with cooling water so as to circulate. Further, the water-cooled engine has a water pump (not shown) outside thereof. The water pump is for circulating the cooling water filled in the water jacket, and is driven by, for example, power transmitted from an engine.

  The generator 4 is disposed below the motor 2 in the direction of gravity (see FIG. 2). The generator 4 can generate power using the engine 3 as a power source, and can generate, for example, AC power. The generator 4 is provided with a temperature sensor 41. The temperature sensor 41 installed in the generator 4 can measure the temperature of the generator 4, and is connected to, for example, a generator control unit 52 described later, and the temperature of the generator 4 is managed by the generator control unit 52.

  The power drive unit 5 is a unit necessary for controlling the motor 2 and the generator 4. The power drive unit 5 is provided with a temperature sensor 53. The temperature sensor 53 installed in the power drive unit 5 can measure the temperature of the power drive unit 5, for example, is connected to the power drive unit 5, and the temperature of the power drive unit 5 is managed by the power drive unit 5. The power drive unit 5 has a motor control unit 51 and a generator control unit 52.

  The motor control unit 51 is capable of performing drive control and regenerative braking control of the motor 2. The motor control unit 51 converts, for example, DC power supplied from a driving battery into three-phase AC power by a motor inverter 511 to control driving of the motor 2 and regenerate the motor 2 while the hybrid vehicle 1 is running. The three-phase AC power generated by the braking action is converted into DC power to charge the driving battery.

  The generator control unit 52 can control the power generation of the generator 4. The generator control unit 52 controls, for example, the generator 4 to generate electric power using the engine 3 as a power source, converts the generated AC power into DC power by the generator inverter 521, charges the driving battery, and supplies power to the motor 2. Supply.

  The integrated control device 6 can control the engine control device 61 in addition to the power drive unit 5 and the cooling fan 7.

  As shown in FIG. 1, a hybrid vehicle 1 according to one embodiment of the present invention includes an oil cooling system 8 and a heater system 9.

  The oil cooling system 8 can cool the motor 2 and the generator 4 with cooling oil. The oil cooling system 8 includes an oil pan 81. The oil pan 81 is provided below the motor 2 and the generator 4, and is capable of storing cooling oil. The oil pan 81 is disposed, for example, below the generator 4 in the direction of gravity (see FIG. 3).

  The oil pan 81 is provided with a temperature sensor 811. The temperature sensor 811 installed in the oil pan 81 can measure the temperature of the cooling oil stored in the oil pan 81. For example, the temperature sensor 811 is connected to the power drive unit 5, and the temperature of the cooling oil stored in the oil pan 81 is It is managed by the power drive unit 5.

  The oil cooling system 8 further includes an oil pipe 82 and an oil pump 83. The oil pipe 82 is provided between the oil pan 81 and the motor 2 and between the oil pan 81 and the generator 4 to connect the oil pan 81 and the motor 2 and to connect the oil pan 81 and the generator 4. . The oil pump 83 is arranged in a pipe path of the oil pipe 82 and can send cooling oil from the oil pan 81 to the motor 2 and from the oil pan 81 to the generator 4. The oil pump 83 is, for example, an electric oil pump, and can be operated by electric power supplied from an auxiliary battery (not shown).

  The oil pump 83 is connected to, for example, the power drive unit 5, and the operation of the oil pump 83 is controlled by the power drive unit 5.

  The oil cooling system 8 further includes an oil cooler 84 and an oil cooler bypass valve 85. The oil cooler 84 can cool the high-temperature cooling oil. The oil cooler 84 is, for example, an air-cooled oil cooler, and can cool the cooling oil by exchanging heat between the outside air and the cooling oil. The oil cooler bypass valve 85 is arranged in a pipe route of the oil pipe 82. The oil cooler bypass valve 85 is connected to, for example, the integrated control device 6 and controlled by the integrated control device 6. The oil cooler bypass valve 85 can be controlled by the integrated control device 6 to control the amount of cooling oil passing through the oil cooler 84 according to the temperature of the cooling oil. The oil cooler bypass valve 85 is controlled by, for example, the integrated control device 6 to increase the amount of cooling oil passing through the oil cooler 84 when the temperature of the cooling oil is high, and to control the oil cooler when the temperature of the cooling oil is low. The amount of cooling oil via 84 is reduced.

  The heater system 9 can use the cooling water heated by the operation of the engine 3 as a heat source, and is provided in parallel with a cooling water circuit (not shown) for cooling the cooling water of the engine 3.

  As shown in FIG. 1, the hybrid vehicle 1 according to one embodiment of the present invention further includes a heat exchanger 95 and a control device 62.

  The heat exchanger 95 can supply cooling water warmed by the operation of the engine 3, and exchanges heat between the cooling water warmed by the operation of the engine 3 and the cooling oil stored in the oil pan 81. It is possible.

  When the temperature of the cooling oil stored in oil pan 81 is lower than a predetermined temperature, control device 62 supplies cooling water heated by operation of engine 3 to heat exchanger 95. The predetermined temperature is, for example, a temperature at which the viscosity of the cooling oil becomes extremely high, for example, minus 20 degrees Celsius. As described above, the temperature of the cooling water stored in the oil pan 81 can be measured by the temperature sensor 811 installed in the oil pan 81, but the outside air temperature sensor (shown in FIG. Alternatively, the estimation may be performed based on the outside air temperature measured by the user.

  According to the hybrid vehicle 1 according to one embodiment of the present invention described above, the control device 62 controls the cooling warmed by the operation of the engine 3 when the temperature of the cooling oil stored in the oil pan 81 is lower than the predetermined temperature. Since the water is supplied to the heat exchanger 95, heat exchange is performed between the cooling water warmed by the operation of the engine 3 and the cooling oil stored in the oil pan 81. Accordingly, even when the temperature of the cooling oil is lower than the predetermined temperature, the viscosity of the cooling oil stored in the oil pan 81 decreases, and the delivery of the cooling oil due to the viscosity of the cooling oil stored in the oil pan 81 is reduced. Defects can be suppressed.

  As shown in FIG. 1, in the hybrid vehicle 1 according to one embodiment of the present invention, the heat exchanger 95 is installed inside an oil pan 81 and can be immersed in cooling oil stored in the oil pan 81.

  According to the hybrid vehicle 1 according to the embodiment of the present invention described above, the heat exchanger 95 is installed inside the oil pan 81 and immersed in the cooling oil stored in the oil pan 81, Heat exchange is efficiently performed between the cooling water warmed by the operation and the cooling oil stored in the oil pan 81. Thereby, the cooling oil stored in the oil pan 81 is efficiently warmed.

  As shown in FIG. 1, in the hybrid vehicle 1 according to one embodiment of the present invention, the heater system 9 includes a hot water passage 91. The hot water passage 91 can circulate the cooling water heated by the operation of the engine 3. In the hot water passage 91, for example, a heater water valve 92 and a heater unit 93 are arranged.

  The heater water valve 92 is configured to close the hot water passage 91 when the coolant temperature of the engine 3 is lower than the predetermined temperature until the coolant temperature of the engine 3 becomes higher than the predetermined temperature.

  As shown in FIG. 4, the heater water valve 92 is, for example, a four-way valve in which a thermo valve 921 is built. The four-way valve having the built-in thermo valve 921 closes the hot water passage 91 by closing the passage when the cooling water temperature of the engine 3 is lower than a predetermined temperature, and the cooling water temperature of the engine 3 becomes predetermined. The thermo valve 921 is configured to open the passage when the temperature is higher than the temperature.

  The heater unit 93 is a unit that enables heating of the vehicle interior of the hybrid vehicle 1. The heater unit 93 is connected to an A / C control panel 94 and is controlled by the A / C control panel 94.

  The heater unit 93 includes a heater core 931. The heater core 931 is provided in the hot water passage 91, and is configured to take heat from the cooling water circulating in the hot water passage 91 and heat the ventilation air.

  In the hybrid vehicle 1 according to one embodiment of the present invention, the heat exchanger 95 is connected to the hot water passage 91 and can supply the cooling water heated by the operation of the engine 3 from the hot water passage 91.

  According to the hybrid vehicle 1 according to the embodiment of the present invention described above, the heat exchanger 95 is connected to the hot water passage 91 and the cooling water heated by the operation of the engine 3 is supplied from the hot water passage 91. It is not necessary to separately provide a passage for supplying the cooling water heated by the operation of the engine 3 to the heat exchanger 95.

  As shown in FIG. 4, the hybrid vehicle 1 according to one embodiment of the present invention further includes a bypass valve 96. The bypass valve 96 can bypass the heat exchanger 95. The bypass valve 96 is installed, for example, at the inlet of the heat exchanger 95. For example, the heat exchanger 95 can be bypassed by closing the bypass valve 96. The bypass valve 96 is connected to, for example, the control device 62 and can be controlled by the control device 62.

  In the hybrid vehicle 1 according to one embodiment of the present invention, the control device 62 causes the bypass valve 96 to bypass the heat exchanger 95 when the temperature of the cooling oil stored in the oil pan 81 is equal to or higher than a predetermined temperature. The predetermined temperature is, for example, a temperature at which the viscosity of the cooling oil becomes equilibrium, and depends on the output of the oil pump 83, but is, for example, a temperature below the freezing point. This makes it possible to use an inexpensive oil pump having a small output, and to suppress the vehicle price. The use of an oil pump having a small output is also effective in suppressing the vibration and noise of the oil pump.

  According to hybrid vehicle 1 according to one embodiment of the present invention, control device 62 causes bypass valve 96 to bypass the heat exchanger when the temperature of the cooling oil stored in oil pan 81 is equal to or higher than a predetermined temperature. In addition, the temperature of the cooling oil stored in the oil pan 81 can be prevented from becoming unnecessarily high.

  As shown in FIG. 4, in the hybrid vehicle 1 according to one embodiment of the present invention, the heater system 9 includes an electric water heater 97. The electric hot water heater 97 is disposed in the hot water passage 91 and can heat the cooling water.

  The electric water heater 97 is connected to, for example, an A / C control panel 94 and is controlled by the A / C control panel 94.

  In hybrid vehicle 1 according to one embodiment of the present invention, control device 62 operates electric hot water heater 97 when the temperature of the cooling oil stored in oil pan 81 is lower than a predetermined temperature.

  According to the hybrid vehicle according to the embodiment of the present invention described above, when the temperature of the cooling oil stored in the oil pan 81 is lower than the predetermined temperature, the electric hot water heater 97 is operated, so that the hot water passage 91 is circulated. The cooling water heated by the operation of the engine 3 can be further warmed. Thus, heat exchange between the cooling water circulating in the hot water passage 91 and heated by the operation of the engine 3 and the cooling oil stored in the oil pan 81 can be promoted. As a result, the cooling oil stored in the oil pan 81 can be warmed at an early stage.

  As shown in FIG. 4, in the hybrid vehicle 1 according to one embodiment of the present invention, the heater system 9 further includes a heater water pump 98. The heater water pump 98 is for circulating the cooling water in the hot water passage 91. The heater water pump 98 is, for example, an electric water pump, and can be operated by electric power supplied from an auxiliary battery. When the electric hot water heater 97 is operated without starting the engine 3, the A / C control panel 94 operates the heater water pump 98, so that the cooling heated by the electric hot water heater 97 in the hot water passage 91. Circulate water.

  According to the hybrid vehicle 1 according to the embodiment of the present invention described above, the A / C control panel 94 operates the heater water pump 98 when the electric hot water heater 97 is operated without starting the engine 3. Thus, the cooling water heated by the electric hot water heater 97 in the hot water passage 91 can be circulated.

  As shown in FIG. 5, in the hybrid vehicle 1 according to one embodiment of the present invention, first, the temperature measurement of the cooling oil stored in the oil pan 81 is started (Step S1). If the temperature of the cooling oil stored in the oil pan 81 is lower than the predetermined temperature (Step S2: Yes), the control device 62 supplies the cooling water heated by the operation of the engine 3 to the heat exchanger 95. (Step S3). Thus, heat exchange is performed between the cooling water warmed by the operation of the engine 3 and the cooling oil stored in the oil pan 81. As a result, the cooling oil stored in the oil pan 81 is warmed.

  When the temperature of the cooling oil stored in the oil pan 81 becomes equal to or higher than the predetermined temperature (Step S4: Yes), the control device 62 causes the bypass valve 96 to bypass the heat exchanger 95 (Step S5). Thus, when the temperature of the cooling oil stored in the oil pan 81 is equal to or higher than the predetermined temperature, the cooling water heated by the engine 3 does not flow to the heat exchanger 95.

  On the other hand, when the temperature of the cooling oil stored in the oil pan 81 is equal to or higher than the predetermined temperature (Step S2: No), the control device 62 continues the state in which the bypass valve 96 bypasses the heat exchanger 95. Therefore, when the cooling oil stored in the oil pan 81 is equal to or higher than the predetermined temperature, the cooling water heated by the engine 3 does not flow to the heat exchanger 95.

  The present invention is not limited to the above-described embodiment, and includes a form in which the above-described embodiment is modified and a form in which these forms are appropriately combined. For example, the control device 62 may start the engine 3 when the temperature of the cooling oil stored in the oil pan 81 is lower than a predetermined temperature.

DESCRIPTION OF SYMBOLS 1 Hybrid vehicle 11 Engine room 2 Motor 21 Temperature sensor 3 Engine 4 Generator 41 Temperature sensor 5 Power drive unit 51 Motor control unit 511 Motor inverter 52 Generator control unit 521 Generator inverter 53 Temperature sensor 6 Integrated control device 61 Engine control device 62 Control device 7 Cooling fan 8 Oil cooling system 81 Oil pan 811 Temperature sensor 82 Oil piping 83 Oil pump 84 Oil cooler 85 Oil bypass valve 9 Heater system 91 Hot water passage 92 Heater water valve 921 Thermo valve 93 Heater unit 931 Heater core 94 A / C control panel 95 Heat exchanger 96 Bypass valve 97 Electric hot water heater 98 Heater Otaponpu

Claims (6)

A motor and an engine as power sources,
A generator capable of generating power using the engine as a power source,
An oil cooling system capable of cooling the motor and the generator with cooling oil,
A heater system capable of using the cooling water heated by the operation of the engine as a heat source,
The oil cooling system comprises:
An oil pan provided in a lower region of the motor and the generator and capable of storing cooling oil,
The hybrid vehicle further comprises:
A heat exchanger capable of supplying cooling water warmed by the operation of the engine and capable of exchanging heat between the cooling water warmed by the operation of the engine and the cooling oil stored in the oil pan; ,
A control device for supplying cooling water heated by operation of the engine to the heat exchanger when the temperature of the cooling oil stored in the oil pan is lower than a predetermined temperature.   The hybrid vehicle according to claim 1, wherein the heat exchanger is installed inside the oil pan and is immersed in cooling oil stored in the oil pan. The heater system includes a hot water passage capable of circulating cooling water heated by operation of the engine,
3. The hybrid vehicle according to claim 1, wherein the heat exchanger is connected to the hot water passage and is capable of supplying cooling water heated by the operation of the engine from the hot water passage. 4. Further comprising a bypass valve capable of bypassing the heat exchanger,
4. The control device according to claim 1, wherein when the temperature of the cooling oil stored in the oil pan is equal to or higher than a predetermined temperature, the control device causes the bypass valve to bypass the heat exchanger. 5. A hybrid vehicle according to claim 1. Including an electric water heater capable of heating cooling water disposed in the path of the hot water passage,
The hybrid vehicle according to claim 3, wherein the control device activates the electric water heater when the temperature of the cooling oil stored in the oil pan is lower than a predetermined temperature. The generator is disposed below the motor in the direction of gravity,
The hybrid vehicle according to any one of claims 1 to 5, wherein the oil pan is installed in a region below the generator in the direction of gravity.

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