vehicle

Abstract

The present invention provides a vehicle that can perform vent closing control after the power switch is turned off without hindering the leakage detection of evaporated fuel in the fuel tank. The vehicle includes an opening and closing mechanism, a fuel leakage detection device, and a control device. The opening and closing mechanism opens and closes the vent at the front of the vehicle. The fuel leakage detection device detects the leakage of evaporated fuel in the fuel tank. The control device controls the opening and closing mechanism so that the vent is closed after a certain time has passed since the power switch was turned off, and the control device performs leakage detection by the fuel leakage detection device. The control device performs leakage detection by the fuel leakage detection device after the power switch is turned off and before the vent is closed by the opening and closing mechanism.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2021-076526 filed on April 28, 2021, and incorporates its content herein. Technical Field

[0002] The present invention relates to a vehicle including an opening / closing mechanism that opens and closes a vent in the front part of the vehicle. Background Art

[0003] As a cooling technique for equipment in the engine room of a vehicle, a technique is known in which the vent in the front part of the vehicle is opened and closed according to the heat generation state of the equipment in the engine room (for example, refer to Japanese Unexamined Patent Application Publication No. 2019-81412).

[0004] The vehicle described in Japanese Unexamined Patent Application Publication No. 2019-81412 is provided with an opening / closing mechanism for opening and closing the vent in the front part of the vehicle. The opening / closing mechanism is controlled by a control device to open the vent when the vehicle is running and close the vent when the power supply is turned off after the vehicle stops. However, depending on the driving conditions of the vehicle, there are cases where the inside of the engine room becomes a high-temperature state even when the power switch of the vehicle is turned off. Therefore, in the vehicle described in Japanese Unexamined Patent Application Publication No. 2019-81412, when it is predicted that heat damage will occur to the equipment in the engine room, after the power switch is turned off, the vent is closed after waiting for a specified time to pass. Summary of the Invention

[0005] However, in recent years, it has been desired to periodically detect (leak check) the leakage of evaporated fuel in the fuel tank of the vehicle. This leakage detection is desired to be performed at least once in one driving cycle (from the last engine start until the next engine start). Since accurate detection results are difficult to obtain during the operation of the engine for the leakage detection of evaporated fuel, it is usually performed after a specified time has passed since the power switch was turned off.

[0006] In a vehicle including an opening / closing mechanism as described in Japanese Unexamined Patent Application Publication No. 2019-81412, it is also necessary to detect the leakage of evaporated fuel in the fuel tank at least once during one driving cycle. However, in the vehicle described in Japanese Unexamined Patent Application Publication No. 2019-81412, there is a situation where the vent is closed after waiting for a specified time to pass after the power switch is turned off, so the closing control of the vent overlaps with the leakage detection of evaporated fuel in terms of timing, which may prevent the execution of the leakage detection of evaporated fuel.

[0007] The solution of the present invention provides a vehicle that can perform the closing control of the vent after the power switch is turned off without interfering with the leakage detection of evaporated fuel in the fuel tank.

[0008] The vehicle of the present invention adopts the following structure.

[0009] (1) The vehicle according to one aspect of the present invention is characterized in that the vehicle includes: an opening / closing mechanism that opens and closes a ventilation port at the front of the vehicle; a fuel leakage detection device that detects leakage of evaporated fuel in a fuel tank; and a control device that controls the opening / closing mechanism to close the ventilation port after a certain period of time has elapsed since the power switch of the vehicle is turned off, and the control device performs leakage detection by the fuel leakage detection device, wherein the control device performs leakage detection by the fuel leakage detection device after the power switch is turned off and immediately before performing the closing operation of the ventilation port by the opening / closing mechanism.

[0010] According to the structure of the above (1) aspect, after the power switch is turned off and immediately before performing the closing operation of the ventilation port by the opening / closing mechanism, the fuel tank is subjected to leakage detection by the fuel leakage detection device. Thus, the leakage detection of evaporated fuel and the control of the closing operation of the ventilation port do not overlap in timing, and the leakage detection of evaporated fuel can be reliably performed.

[0011] (2) In the above (1) aspect, it may also be that the control device performs leakage detection by the fuel leakage detection device after a predetermined period of time has elapsed since the power switch is turned off, and performs the closing operation of the ventilation port by the opening / closing mechanism after the leakage detection by the fuel leakage detection device is completed.

[0012] In the case of the above (2) aspect, the leakage detection by the fuel leakage detection device is performed after a predetermined period of time has elapsed since the power switch is turned off, and the closing operation of the ventilation port by the opening / closing mechanism is performed after the leakage detection is completed. Therefore, it is possible to reliably prevent the situation where the leakage detection by the fuel leakage detection device and the execution of the closing operation of the ventilation port overlap in timing.

[0013] (3) In the above (1) aspect, it may also be that the control device checks for a failure of the opening / closing mechanism after the power switch is turned off, and cancels the closing operation of the ventilation port by the opening / closing mechanism when a failure exists in the opening / closing mechanism.

[0014] In the case of the above (3) aspect, when a failure exists in the opening / closing mechanism, the closing operation of the ventilation port by the opening / closing mechanism is cancelled. Therefore, it is possible to avoid the situation where the ventilation port cannot be opened again due to forcibly closing the opening / closing mechanism. Thus, when this structure is adopted, it is possible to prevent the ventilation performance of the vehicle from deteriorating due to a failure of the opening / closing mechanism.

[0015] (4)In the solution of (3) above, it may also be that the control device performs a leakage detection by the fuel leakage detection device after disconnecting the power switch and before performing a failure check on the opening and closing mechanism.

[0016] In the case of the solution of (4) above, a leakage detection by the fuel leakage detection device is performed before performing a failure check on the opening and closing mechanism. Therefore, regardless of whether there is a failure in the opening and closing mechanism, the leakage of the evaporated fuel in the fuel tank can be reliably detected.

[0017] (5)In the solution of (1) above, it may also be that the vehicle further includes an air conditioning device having a pre-air conditioning function for performing air conditioning work before turning on the power switch. When performing pre-air conditioning by the air conditioning device, the control device cancels the closing operation of the air vent by the opening and closing mechanism after disconnecting the power switch.

[0018] In the case of the solution of (5) above, when performing pre-air conditioning by the air conditioning device, the closing operation of the air vent by the opening and closing mechanism after disconnecting the power switch is cancelled. Therefore, external gas can be introduced into the condenser of the air conditioning device through the air vent. Therefore, when adopting this structure, the decrease in refrigeration performance during the implementation of pre-air conditioning can be suppressed.

[0019] (6)In the solution of (1) above, it may also be that the vehicle further includes: a rechargeable drive battery; and a cooling circuit of the drive battery that dissipates heat to the external gas through the air vent. When charging the drive battery in a state where the power switch is disconnected, the control device cancels the closing operation of the air vent by the opening and closing mechanism after disconnecting the power switch.

[0020] In this case, when charging the drive battery in a state where the power switch is disconnected, the closing operation of the air vent by the opening and closing mechanism after disconnecting the power switch is cancelled. Therefore, external gas can be introduced into the cooling circuit of the drive battery through the air vent. Therefore, when adopting this structure, the situation where the drive battery becomes high temperature during charging of the drive battery can be suppressed.

[0021] In addition, in a system where the cooling fan operates at a speed corresponding to the temperature of the cooling circuit of the drive battery, the generation of noise caused by the high-speed rotation of the cooling fan can be suppressed.

[0022] In the vehicle according to the solution of the present invention, the control device performs leakage detection by the fuel leakage detection device immediately before closing the ventilation port through the opening and closing mechanism after the power switch is turned off. Therefore, it is possible to perform the closing control of the ventilation port after the power switch is turned off without hindering the leakage detection of the evaporated fuel in the fuel tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic configuration diagram of the main part of the longitudinal section of the vehicle according to the embodiment formed along the vehicle front-rear direction.

[0024] Figure 2 is a top view of the lower side constituent member on the front side of the vehicle according to the embodiment.

[0025] Figure 3 is a circuit diagram showing a part of the cooling circuit of the vehicle according to the embodiment.

[0026] Figure 4 is a flowchart showing the control flow of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, embodiments of the present invention will be described based on the drawings. It should be noted that the front, rear, left, and right directions in the following description are the same as those in the vehicle traveling forward. In addition, arrows FR indicating the front of the vehicle, arrow LH indicating the left side of the vehicle, and arrow UP indicating the upper side of the vehicle are shown at appropriate positions in the drawings.

[0028] Figure 1 is a schematic configuration diagram of the main part of the longitudinal section of the front part of the vehicle 1 according to the present embodiment formed along the vehicle front-rear direction.

[0029] In Figure 1 , reference numeral 2 is an engine compartment provided in front of the driver's seat. A pair of front side frames (not shown) extending substantially along the vehicle front-rear direction are arranged in the engine compartment 2. An internal combustion engine 10 (hereinafter referred to as "engine 10") as a drive source and an electric motor 11 are supported on the pair of front side frames via a sub-frame 3. The engine 10 and the electric motor 11 are arranged as an integral block at substantially the central part in the engine compartment 2 together with a transmission 20 (see Figure 3 ).

[0030] The vehicle 1 according to the present embodiment is a hybrid vehicle equipped with the engine 10 and the electric motor 11 as drive sources. The engine 10 and the electric motor 11 are appropriately controlled by a control device 25 according to the driving condition of the vehicle 1. In addition, when the vehicle 1 brakes, the electric motor 11 performs regenerative power generation by the control performed by the control device 25.

[0031] On the front side of the engine 10 and the electric motor 11, a cooling block 13 is arranged for cooling each cooling part of the engine 10, the electric motor 11, and the air conditioning device 12 with external gas. The cooling block 13 includes: a first radiator 14 for dissipating the heat of the coolant of the engine 10 to the external gas; a second radiator 16 for dissipating the heat of the coolant for cooling the drive unit 15 (PDU) of the electric motor 11 to the external gas; a condenser 17 for dissipating the condensation heat of the refrigerant circuit (refrigeration cycle) of the air conditioning device 12 to the external gas; and a cooling fan 18 arranged behind the first radiator 14. The second radiator 16 is arranged in the lower area on the front surface side of the first radiator 14, and the condenser 17 is arranged in the upper area on the front surface side of the first radiator 14. Since the first radiator 14 dissipates the heat of the coolant of the engine 10 with a large amount of heat generation, it is formed larger than the second radiator 16 and the condenser 17 on the front surface side.

[0032] In the central area in the vehicle width direction at the front of the vehicle, an upper ventilation port 21 and a lower ventilation port 22 are arranged to communicate the front surface side of the vehicle with the inside of the engine compartment 2. The upper ventilation port 21 is arranged at a position facing the front surface of the condenser 17 of the cooling block 13, and the lower ventilation port 22 is arranged at a position facing the front surface of the second radiator 16 of the cooling block 13. It should be noted that the upper area of the first radiator 14 located behind the condenser 17 and the second radiator 16 faces the upper ventilation port 21 across the condenser 17, and the lower area faces the lower ventilation port 22 across the second radiator 16.

[0033] An upper opening / closing mechanism 23 for opening and closing the upper ventilation port 21 is provided at the upper ventilation port 21. An actuator 23a for operating an opening / closing operation part such as a shutter is provided in the upper opening / closing mechanism 23. Similarly, a lower opening / closing mechanism 24 for opening and closing the lower ventilation port 22 is provided at the lower ventilation port 22. An actuator 24a for operating an opening / closing operation part such as a shutter is also provided in the lower opening / closing mechanism 24. The actuators 23a and 24a of the upper opening / closing mechanism 23 and the lower opening / closing mechanism 24 are controlled by a control device 25. The control of the upper opening / closing mechanism 23 and the lower opening / closing mechanism 24 by the control device 25 will be described in detail later.

[0034] Figure 2 It is a top view of the lower side component in the engine compartment 2. It should be noted that Figure 2 the symbol Wf in

[0035] is the front wheel driven by the power source (engine 10, electric motor 11) via the transmission 20. Figure 1 、 Figure 2As shown, a bottom cover 26 is disposed at the bottom inside the engine compartment 2. The bottom cover 26 extends from the lower edge of the front bumper front surface 27 at the front of the vehicle along the lower surface of the sub-frame 3 to the floor panel (not shown) of the passenger compartment. That is, the bottom cover 26 is formed so as to cover the lower sides of the cooling block 13, the engine 10, the electric motor 11, the transmission 20, the mounting components 5 of the drive source, the steering components 6, etc.

[0036] A cooling passage 28 is disposed on the upper surface of the front side of the bottom cover 26. The cooling passage 28 is used to allow the external gas that has passed through the lower region of the lower ventilation opening 22 to flow around the second radiator 16 and the first radiator 14 and flow into the rear region of the first radiator 14 inside the engine compartment 2. The cooling passage 28 includes: a wide base passage portion 28A facing the lower region of the lower ventilation opening 22 from the rear side; and a branch passage portion 28B disposed opposite to the rear portion of the base passage portion 28A. An intake port 28a facing the rear surface of the lower ventilation opening 22 is formed at the front end portion of the base passage portion 28A. A central discharge port 28b that opens toward the front surface side of the engine 10 and the electric motor 11 and a pair of side discharge ports 28c that open toward the rear side of the vehicle at positions where they bypass the engine 10 and the electric motor 11 to the outside in the vehicle width direction are formed in the branch passage portion 28B. The external gas that has passed through the lower region of the lower ventilation opening 22 flows into the engine 10 and the electric motor 11 as cooling air through the central discharge port 28b, and also flows into other peripheral components (for example, the mounting components 5, the steering components 6, the transmission 20) as cooling air through the side discharge ports 28c.

[0037] The first radiator 14 of the cooling block 13 is disposed in a first cooling circuit (not shown) that allows the coolant to flow into an unillustrated water jacket of the engine 10. The first radiator 14 dissipates the heat of the coolant that has cooled the engine 10 in the first circuit to the external gas. A first temperature sensor S1 for detecting the temperature of the coolant flowing in this circuit is provided in the first cooling circuit (refer to Figure 1 ). The detection signal of the first temperature sensor S1 is input to the control device 25. The control device 25 receives the detection signal of the first temperature sensor S1 and controls the upper opening / closing mechanism 23 and the lower opening / closing mechanism 24 according to the detection signal.

[0038] Specifically, in the control device 25, with respect to the liquid temperature in the first cooling circuit, a first threshold value Tn1 and a second threshold value Tn2 (Tn1 < Tn2) are determined. When the liquid temperature of the coolant inside the first cooling circuit is equal to or higher than the first threshold value Tn1 and less than the second threshold value Tn2, the control device 25 controls each actuator 23a, 24a of the upper opening / closing mechanism 23 and the lower opening / closing mechanism 24 so as to open the upper vent port 21 and close the lower vent port 22. In addition, when the liquid temperature of the coolant inside the first cooling circuit is equal to or higher than the second threshold value Tn2, the control device 25 controls each actuator 23a, 24a of the upper opening / closing mechanism 23 and the lower opening / closing mechanism 24 so as to open the upper vent port 21 and the lower vent port 22.

[0039] It should be noted that when the liquid temperature of the coolant inside the first cooling circuit is less than the first threshold value Tn1, if the liquid temperature inside the second cooling circuit 29 and the operating condition of the air conditioning device 12, which will be described later, do not satisfy the condition for opening the upper vent port 21, the control device 25 controls the upper opening / closing mechanism 23 so as to close the upper vent port 21.

[0040] Figure 3 It is a circuit diagram showing a second cooling circuit 29 for cooling a drive unit 15 (PDU) of the electric motor 11 and a lubrication cooling circuit 30 for circulating and supplying lubricating oil to a mechanical operation part of the transmission 20 and the electric motor 11.

[0041] As Figure 3 shown, in the main circuit 29m of the second cooling circuit 29, an electric supply pump P1, a drive unit 15 (PDU), and a second radiator 16 are arranged. The coolant supplied from the supply pump P1 cools the drive unit 15, and the heat absorbed in the drive unit 15 is dissipated to the external gas in the second radiator 16. It should be noted that the drive unit 15 includes an inverter that converts the DC current of an unillustrated high-voltage battery into three-phase alternating current, a DC-DC converter that performs voltage conversion of the DC current, etc., and generates high heat during operation.

[0042] In addition, the second cooling circuit 29 includes a bypass passage 31 that bypasses the drive unit 15 and connects the upstream side and the downstream side of the drive unit 15. An on-off valve 32 and a circuit heat exchange part 33, which will be described in detail later, are installed in the bypass passage 31.

[0043] In the main circuit 29m of the second cooling circuit 29, a second temperature sensor S2 for detecting the temperature of the coolant flowing in the main circuit 29m is provided. The detection signal of the second temperature sensor S2 is input to the control device 25 (refer to Figure 1 ). The control device 25 receives the detection signal of the second temperature sensor S2 and controls the lower opening / closing mechanism 24 based on the detection signal.

[0044] Specifically, in the control device 25, a prescribed liquid temperature threshold value Tm1 is determined for the liquid temperature in the second cooling circuit 29. When the liquid temperature of the coolant inside the second cooling circuit 29 is equal to or higher than the liquid temperature threshold value Tm1, the control device 25 controls the lower opening / closing mechanism 24 to open the lower vent 22. That is, when there is a requirement to cool the drive unit 15, the control device 25 controls the lower opening / closing mechanism 24 to open the lower vent 22.

[0045] In addition, when the liquid temperature of the coolant inside the second cooling circuit 29 is less than the liquid temperature threshold value Tm1, the control device 25 controls the lower opening / closing mechanism 24 to close the lower vent 22 regardless of the oil temperature in the lubricating and cooling circuit 30 described later.

[0046] An electric supply pump P2, a transmission 20 (lubrication passage), an electric motor 11 (lubrication passage), and a circuit heat exchanger 33 are arranged in the lubricating and cooling circuit 30. The circuit heat exchanger 33 is a device that performs heat exchange between the lubricating oil flowing in the lubricating and cooling circuit 30 and the coolant flowing in the bypass passage 31 of the second cooling circuit 29. The coolant flowing in the second cooling circuit 29 can dissipate heat to the external air in the second radiator 16. The lubricating oil flowing in the lubricating and cooling circuit 30 is cooled by performing heat exchange with the coolant flowing in the second cooling circuit 29 in the circuit heat exchanger 33.

[0047] An oil temperature sensor S3 is provided in the lubricating and cooling circuit 30. The detection signal of the oil temperature sensor S3 is input to the valve control device 25A. The valve control device 25A receives the detection signal of the oil temperature sensor S3 and performs opening / closing control of the on-off valve 32 in the second cooling circuit 29 according to the detection signal.

[0048] Specifically, in the valve control device 25A, a prescribed oil temperature threshold value Tk1 is determined for the oil temperature of the lubricating and cooling circuit 30. When the oil temperature of the lubricating oil inside the lubricating and cooling circuit 30 is equal to or higher than the prescribed oil temperature threshold value Tk1, the valve control device 25A controls the on-off valve 32 to open. That is, the on-off valve 32 in the second cooling circuit 29 cuts off the inflow of the coolant to the circuit heat exchanger 33 when the oil temperature in the lubricating and cooling circuit 30 is less than the oil temperature threshold value Tk1, and allows the inflow of the coolant to the circuit heat exchanger 33 when the oil temperature in the lubricating and cooling circuit 30 is equal to or higher than the oil temperature threshold value Tk1. Therefore, when the oil temperature in the lubricating and cooling circuit 30 becomes equal to or higher than the oil temperature threshold value Tk1, the lubricating oil in the lubricating and cooling circuit 30 is cooled by the coolant in the circuit heat exchanger 33.

[0049] It should be noted that in this embodiment, the control device 25 for controlling the upper opening and closing mechanism 23 and the lower opening and closing mechanism 24 has a different structure from the valve control device 25A for controlling the opening and closing valve 32, but the two can also be constituted by the same control device.

[0050] In addition, a detection signal for detecting whether the air conditioning device 12 is operating is input to the control device 25. Specifically, for example, the pressure on the downstream side of a compressor (not shown) in the refrigerant circuit of the air conditioning device 12 is used as the detection signal, and this detection signal is input to the control device 25. When the air conditioning device 12 is operating, the control device 25 controls the upper opening and closing mechanism 23 to open the upper ventilation port 21. Thereby, external gas is introduced into the condenser 17 through the upper ventilation port 21, and efficient refrigeration operation can be performed through the air conditioning device 12.

[0051] As Figure 1 shown, the vehicle 1 of this embodiment is equipped with a fuel leakage detection device 55 for detecting leakage of the evaporation heat in the fuel tank 50. The fuel leakage detection device 55 is unitized and provided inside the fuel tank 50. The fuel leakage detection device 55 receives an instruction from the control device 25 and performs leakage detection of the evaporated fuel in the fuel tank 50 at a specified timing.

[0052] The control device 25 has a wake-up function in which when a certain time has elapsed since the power switch 38 (ignition switch) shown in Figure 1 is turned off, the sub-CPU 45 temporarily turns on the power supply 40 to start a part of the control device 25. Hereinafter, this start-up of the control device 25 is referred to as "wake-up start".

[0053] The leakage detection of the evaporated fuel by the fuel leakage detection device 55 is performed at the wake-up start of the control device 25.

[0054] In addition, in the vehicle 1 of this embodiment, when the power switch 38 is turned off, the upper ventilation port 21 and the lower ventilation port 22 are maintained in an open state for a specified time, thereby dissipating the heat in the engine compartment 2 to the outside of the vehicle. The control device 25 controls the upper opening and closing mechanism 23 and the lower opening and closing mechanism 24 so that after a specified time has elapsed since the power switch 38 was turned off, the upper ventilation port 21 and the lower ventilation port 22 are closed. The closing control of the opening and closing mechanisms 23 and 24 is performed at the wake-up start of the control device 25.

[0055] The execution of the detection by the fuel leakage detection device 55 and the closing control of the opening and closing mechanisms 23 and 24 at the wake-up start are performed by the control device 25 as follows.

[0056] That is, after the power switch 38 is turned off, the control device 25 performs a leakage detection by the fuel leakage detection device 55 immediately before the opening / closing mechanisms 23 and 24 perform the closing operation of the ventilation ports 21 and 22. Specifically, the control device 25 wakes up and starts after a predetermined time (for example, 4 hours) has elapsed since the power switch 38 was turned off, performs a leakage detection by the fuel leakage detection device 55, and after the leakage detection by the fuel leakage detection device 55 is completed, performs the closing operation of the ventilation ports 21 and 22 by the opening / closing mechanisms 23 and 24.

[0057] In addition, after the control device 25 wakes up and starts and performs a leakage detection by the fuel leakage detection device 55, before performing the closing operation of the ventilation ports 21 and 22 by the opening / closing mechanisms 23 and 24, a failure check of the opening / closing mechanisms 23 and 24 is performed. This failure check examines, for example, the displacement state and heat generation temperature of the operation unit when the actuators 23a and 24a are operating. In addition, during this failure check, a communication abnormality of the LIN communication is also checked.

[0058] When there is an abnormality in the opening / closing mechanisms 23 and 24 or the LIN communication during the failure check of the opening / closing mechanisms 23 and 24 by the control device 25, the subsequent closing operation of the ventilation ports 21 and 22 by the opening / closing mechanisms 23 and 24 is cancelled. It should be noted that since the control device 25 performs a leakage detection by the fuel leakage detection device 55 before performing a failure check of the opening / closing mechanisms 23 and 24 after waking up and starting, the leakage detection of the evaporated fuel is reliably performed during one driving cycle regardless of whether there is a failure in the opening / closing mechanisms 23 and 24.

[0059] Next, with reference to Figure 4 an example of the control performed by the control device 25 during wake-up start will be described.

[0060] In Figure 4 step S101, it is determined whether it is the first process after wake-up start. If it is the first process, the process proceeds to step S102 to set a forced end timer. If it is not the first process, the process of step S102 is skipped and the process proceeds to the next step S103. When the forced end timer reaches the set predetermined time, the control device 25 is forced to return to the sleep state regardless of the completion of the process.

[0061] In step S103, a leakage detection by the fuel leakage detection device 55 is performed.

[0062] In the next step S104, it is determined whether the leakage detection performed by the fuel leakage detection device 55 is completed. If the leakage detection is completed, the process proceeds to step S105. If the leakage detection is not completed, the process proceeds to step S106. In step S106, it is determined whether the forced end time has elapsed. If the forced end time has not elapsed, the process proceeds to step S112 to continue a series of processes.

[0063] In step S105, preparations for closing control of the opening / closing mechanisms 23 and 24 are started. Then, in step S107, it is determined whether there are any failures in the opening / closing mechanisms 23 and 24 or in the LIN communication. If there is a failure in at least one of them, the process proceeds to step S108. If there are no failures in either of them, the process proceeds to step S109.

[0064] In step S108, the closing control of the ventilation ports 21 and 22 performed by the opening / closing mechanisms 23 and 24 is cancelled, and the ventilation ports 21 and 22 are maintained in the open state. Then, the process proceeds to step S111, and the control device 25 returns to the sleep state.

[0065] In step S109, the closing control of the ventilation ports 21 and 22 performed by the opening / closing mechanisms 23 and 24 is executed. Then, in step S110, it is determined whether the ventilation ports 21 and 22 are completely closed by the opening / closing mechanisms 23 and 24. If the ventilation ports 21 and 22 are completely closed, the process proceeds to step S111, and the control device 25 returns to the sleep state. If the ventilation ports 21 and 22 are not completely closed, the process proceeds to step S106, and the process of step S106 described above is executed.

[0066] Here, the air conditioning device 12 of the vehicle 1 according to the present embodiment has a pre-air conditioning function that performs air conditioning work before the occupant enters the vehicle and turns on the power switch 38. Based on the setting by the occupant, the air conditioning based on the pre-air conditioning function automatically operates the air conditioning device 12 after a predetermined time has elapsed since the power switch 38 was turned off when getting out of the vehicle.

[0067] When the pre-air conditioning is set by the occupant, the control device 25 cancels the closing operation of the ventilation ports 21 and 22 performed by the opening / closing mechanisms 23 and 24 during wake-up start ( Figure 4 step S109 in the flowchart). Therefore, when performing pre-air conditioning, the ventilation ports 21 and 22 are maintained in the open state.

[0068] In addition, the vehicle 1 according to the present embodiment includes a rechargeable drive battery 60 (refer to Figure 1 ) and a cooling circuit (not shown) of the drive battery 60 that dissipates heat to the outside air through the ventilation ports 21 and 22. It should be noted that Figure 1The symbol 65 therein is a charge detection unit that detects the start of charging of the drive battery 60.

[0069] After the power switch 38 is turned off, when the charge detection unit 65 detects the start of charging, the control device 25 cancels the closing operation of the vents 21 and 22 by the opening / closing mechanisms 23 and 24 during wake-up start ( Figure 4 step S109 in the flowchart). Therefore, when the drive battery 60 is charged with the power switch 38 in the off state, the vents 21 and 22 are maintained in the open state.

[0070] (Effects of the Embodiment)

[0071] As described above, in the vehicle 1 of the present embodiment, after the power switch 38 is turned off, before the closing operation of the vents 21 and 22 is performed by the opening / closing mechanisms 23 and 24, the leakage detection by the fuel leakage detection device 55 is executed. Therefore, in the vehicle of the present embodiment, it is possible to execute the closing control of the vents 21 and 22 after the power switch 38 is turned off without hindering the leakage detection of the evaporated fuel in the fuel tank 50.

[0072] In addition, in the vehicle 1 of the present embodiment, the leakage detection by the fuel leakage detection device 55 is executed after a predetermined time has elapsed since the power switch 38 was turned off (during wake-up start), and the closing operation of the vents 21 and 22 by the opening / closing mechanisms 23 and 24 is executed after the leakage detection by the fuel leakage detection device 55 is completed. Therefore, in the case where this structure is adopted, it is possible to reliably prevent the leakage detection by the fuel leakage detection device 55 and the execution of the closing operation of the vents 21 and 22 from overlapping in timing.

[0073] In addition, the vehicle 1 of the present embodiment performs a failure check of the opening / closing mechanisms 23 and 24 after wake-up start, and when there is a failure in the opening / closing mechanisms 23 and 24, the closing operation of the vents 21 and 22 by the opening / closing mechanisms 23 and 24 is canceled. Therefore, it is possible to avoid the following situation: forcibly closing the opening / closing mechanisms 23 and 24 in a state where there is a failure in the opening / closing mechanisms 23 and 24, so that the vents 21 and 22 cannot be opened again. Therefore, in the case where this structure is adopted, it is possible to prevent in advance the situation where the ventilation performance of the vehicle 1 deteriorates due to a failure of the opening / closing mechanisms 23 and 24.

[0074] Moreover, in the vehicle 1 of the present embodiment, the leakage detection by the fuel leakage detection device 55 is executed before the failure check of the opening / closing mechanisms 23 and 24 is performed after wake-up start. Therefore, it is possible to reliably detect the leakage of the evaporated fuel in the fuel tank 50 regardless of whether there is a failure in the opening / closing mechanisms 23 and 24.

[0075] In addition, when the vehicle 1 of the present embodiment performs pre-air conditioning through the air conditioning device 12, the closing operations of the ventilation openings 21 and 22 by the opening / closing mechanisms 23 and 24 during wake-up start are cancelled. Therefore, when pre-air conditioning is implemented, external gas can be introduced into the condenser 17 of the air conditioning device 12 through the ventilation openings 21 and 22. Therefore, when this structure is adopted, it is possible to suppress a decrease in refrigeration performance when pre-air conditioning is implemented.

[0076] In addition, when the vehicle 1 of the present embodiment charges the drive battery 60 in a state where the power switch 38 is turned off, the closing operations of the ventilation openings 21 and 22 by the opening / closing mechanisms 23 and 24 during wake-up start are cancelled. Therefore, when charging the drive battery 60 in a state where the power switch 38 is turned off, external gas can be introduced into the cooling circuit of the drive battery 60 through the ventilation openings 21 and 22. Therefore, when this structure is adopted, it is possible to suppress the drive battery 60 from becoming high temperature when charging the drive battery 60.

[0077] In addition, in a system where the cooling fan operates at a speed corresponding to the temperature of the cooling circuit of the drive battery 60, generation of noise caused by the cooling fan operating at a high rotation speed can be suppressed. That is, in this structure, the cooling circuit of the drive battery 60 can be efficiently cooled through the ventilation openings 21 and 22, so the operating speed of the cooling fan can be suppressed low, suppressing the generation of noise.

[0078] It should be noted that the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist thereof. For example, in the above-described embodiments, the ventilation openings are provided in two upper and lower stages, and opening / closing mechanisms are respectively provided for each ventilation opening, but there may also be one ventilation opening and one opening / closing mechanism. In addition, the number of ventilation openings and opening / closing mechanisms may also be three or more.

Claims

1. A vehicle, characterized in that: The vehicle has: An opening and closing mechanism that opens and closes the air vent at the front of the vehicle; a fuel leak detection device that detects leakage of evaporated fuel in a fuel tank; and a control device that controls the opening and closing mechanism so that the vent is closed after a certain time has passed since the power switch of the vehicle was turned off, and the control device performs leakage detection by the fuel leakage detection device, The control device performs leakage detection by the fuel leakage detection device after a predetermined time has passed since the power switch was turned off, and performs closing operation of the vent port by the opening and closing mechanism after the leakage detection by the fuel leakage detection device is completed.

2. The vehicle according to claim 1, characterized in that The control device performs a fault check on the opening and closing mechanism after turning off the power switch, and cancels the closing operation of the vent port by the opening and closing mechanism when there is a fault in the opening and closing mechanism.

3. The vehicle according to claim 2, characterized in that The control device performs leakage detection by the fuel leakage detection device after turning off the power switch and before performing a failure check of the opening and closing mechanism.

4. The vehicle according to claim 1, characterized in that The vehicle further includes an air conditioning device having a pre-air conditioning function for performing an air conditioning operation before the power switch is turned on. When pre-air conditioning is performed by the air conditioning device, the control device cancels the closing operation of the vent port by the opening and closing mechanism after the power switch is turned off.

5. The vehicle according to claim 1, characterized in that The vehicle also has: Rechargeable drive batteries; and a cooling circuit for the driving battery that dissipates heat to the outside air through the vent, When the driving battery is charged in a state where the power switch is turned off, the control device cancels the closing operation of the vent by the opening and closing mechanism after the power switch is turned off.

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