Vehicle

Abstract

To properly start an engine when idling stop control is released.SOLUTION: A control device including an engine, an intake manifold connected to the engine, a starter motor configured to start the engine, a battery configured to drive the starter motor, one or a plurality of processors, and one or a plurality of memories connected to the processor, the processor is configured to execute a process including executing idling stop control, and executing adjustment control for adjusting the internal pressure of the intake manifold such that the internal pressure of the intake manifold becomes lower as the voltage of the battery becomes lower before the idling stop control is canceled during execution of the idling stop control.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle. [Background technology]

[0002] Vehicles that implement idling stop control, such as that disclosed in Patent Document 1, are becoming widespread in order to reduce exhaust gas, noise, and improve fuel economy. The idling stop control is a control that automatically stops the engine when the vehicle is temporarily stopped. When the conditions for canceling the idling stop control are met, the engine is restarted. At this time, the engine is restarted by a starter motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2013 / 021429 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the voltage of the power supplied to the starter motor drops due to battery degradation or other reasons, the torque of the starter motor may not be able to overcome the frictional resistance of the engine and the rotational resistance generated during the compression stroke. In this case, the starter motor may not be able to crank the engine properly, and the engine may not be able to be restarted properly.

[0005] In view of the above problems, the present invention has an object to provide a vehicle that is capable of appropriately starting the engine when idling stop control is released. [Means for solving the problem]

[0006] In order to solve the above problem, a vehicle according to one embodiment of the present invention comprises: The engine and an intake manifold connected to the engine; a starter motor for starting the engine; a battery that drives the starter motor; a control device having one or more processors and one or more memories coupled to the processors; Equipped with The processor: Executing idling stop control; During execution of the idling stop control, before canceling the idling stop control, executes adjustment control to adjust the internal pressure of the intake manifold so that the internal pressure of the intake manifold becomes lower as the voltage of the battery becomes lower; Execute the process including. [Effects of the Invention]

[0007] According to the present invention, it is possible to appropriately start the engine when idling stop control is released. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing a general configuration of a vehicle according to an embodiment of the present invention. [Figure 2] FIG. 2 is a block diagram showing an example of a functional configuration of the control device according to the embodiment. [Figure 3] FIG. 3 is a flowchart showing an example of the flow of an idling stop process performed by the control device according to the embodiment. [Figure 4] FIG. 4 is a schematic diagram showing a general configuration of a vehicle according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific dimensions, materials, numerical values, etc. shown in the embodiments are merely examples for facilitating understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant explanation, and elements not directly related to the present invention are not shown.

[0010] <1. Vehicle configuration> First, the configuration of a vehicle 100 according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a schematic diagram showing a general configuration of a vehicle 100 according to an embodiment of the present invention. As shown in Fig. 1, the vehicle 100 includes, for example, an engine 110, a starter motor 120, a battery 130, an intake manifold 140, an intake flow path 150, a throttle valve 160, an exhaust manifold 170, an exhaust flow path 180, and a control device 190.

[0011] The engine 110 functions as a drive source for the vehicle 100. In other words, the vehicle 100 is an engine vehicle. The engine 110 is a gasoline engine or a diesel engine. The vehicle 100 may also be a hybrid vehicle that includes a motor as a drive source in addition to the engine 110. The engine 110 has, for example, multiple cylinders.

[0012] Starter motor 120 is a motor that starts engine 110. Battery 130 drives starter motor 120. Battery 130 is, for example, an auxiliary battery.

[0013] Intake manifold 140 is connected to an intake port formed in each cylinder of engine 110. Intake manifold 140 may also be provided with a pressure sensor 142 that detects the internal pressure of intake manifold 140.

[0014] The intake flow path 150 is connected to a collecting portion of the intake manifold 140. The intake flow path 150 is provided with, for example, an air cleaner 152. The air cleaner 152 removes foreign matter contained in the air taken into the intake flow path 150.

[0015] A throttle valve 160 is provided in the intake flow path 150 downstream of the air cleaner 152. The throttle valve 160 adjusts the flow rate of the intake air sent to the engine 110 through the intake flow path 150. The flow rate of the intake air sent to the engine 110 changes depending on the opening degree of the throttle valve 160.

[0016] The exhaust manifold 170 is connected to exhaust ports formed in each cylinder of the engine 110. The exhaust flow path 180 is connected to a collection point of the exhaust manifold 170. The exhaust flow path 180 is provided with, for example, a purification device 182. The purification device 182 purifies the exhaust gas emitted from the engine 110. The purification device 182 includes, for example, one or both of a catalyst and a filter. The catalyst includes, for example, at least one of an oxidation catalyst, a three-way catalyst, and a NOx storage reduction catalyst. The filter captures particulate matter such as soot contained in the exhaust gas. The filter is, for example, a GPF or a DPF.

[0017] The control device 190 has one or more processors 190a and one or more memories 190b connected to the processors 190a. The processor 190a includes, for example, a CPU (Central Processing Unit). The memory 190b includes, for example, a ROM (Read Only Memory) and a RAM (Random Access Memory). The ROM is a storage element that stores programs used by the CPU, calculation parameters, etc. The RAM is a storage element that temporarily stores data such as variables and parameters used in processing executed by the CPU. Details of the control device 190 will be described later.

[0018] In this embodiment, the vehicle 100 may be equipped with an evaporated fuel treatment device 200. The evaporated fuel treatment device 200 is also called an evaporative system. The evaporated fuel treatment device 200 prevents fuel gas evaporated from a fuel tank or the like provided in the vehicle 100 from being released into the atmosphere. The evaporated fuel treatment device 200 includes, for example, a first flow path 210, a canister 220, a suction device 230, and an opening adjustment valve 240.

[0019] The first flow path 210 is connected to the intake flow path 150. The first flow path 210 is in communication with the intake manifold 140 through the intake flow path 150.

[0020] The canister 220 is provided in the first flow path 210. The canister 220 stores fuel gas evaporated from a fuel tank or the like. The canister 220 contains, for example, activated carbon.

[0021] The suction device 230 is provided on the opposite side of the canister 220 from the intake manifold 140 in the first flow path 210, and sucks gas from the intake manifold 140 toward the first flow path 210. The suction device 230 is included in, for example, an ELCM (Evaporative Leak Check Module). The ELCM is a device that checks for fuel gas leaks from the fuel tank. The suction device 230 includes, for example, a pump.

[0022] The opening adjustment valve 240 is provided in the first flow path 210 on the intake manifold 140 side with respect to the canister 220. The opening adjustment valve 240 adjusts the flow path cross-sectional area of ​​the first flow path 210. The opening adjustment valve 240 is, for example, a solenoid valve.

[0023] The control device 190 communicates with each device provided in the vehicle 100, such as the engine 110, the throttle valve 160, the starter motor 120, the battery 130, the pressure sensor 142, the suction device 230, and the opening adjustment valve 240. The communication between the control device 190 and each device is realized, for example, by using CAN (Controller Area Network) communication.

[0024] Fig. 2 is a block diagram showing an example of the functional configuration of the control device 190 according to this embodiment. For example, as shown in Fig. 2, the control device 190 has an acquisition unit 192, a calculation unit 194, a control unit 196, and a storage unit 198. Note that various processes, including the processes described below, performed by at least one of the acquisition unit 192, the calculation unit 194, and the control unit 196 may be executed by the processor 190a. In detail, the various processes are executed by the processor 190a executing programs stored in the memory 190b. Furthermore, the function of the storage unit 198 is realized by the memory 190b.

[0025] The acquisition unit 192 acquires various information used in the processing performed by one or both of the calculation unit 194 and the control unit 196, and outputs the information to one or both of the calculation unit 194 and the control unit 196. For example, the acquisition unit 192 acquires information such as voltage from the battery 130. The acquisition unit 192 may also acquire information from the engine 110, the pressure sensor 142, the canister 220, etc.

[0026] During execution of the idling stop control, and before the idling stop control is cancelled, calculation unit 194 calculates a target internal pressure of intake manifold 140 based on the voltage of battery 130. Details of the processing by calculation unit 194 will be described later.

[0027] The control unit 196 controls the operation of each device provided in the vehicle 100. In this embodiment, the control unit 196 executes idling stop control by controlling the engine 110. The idling stop control is a control for stopping the engine when the vehicle 100 is temporarily stopped.

[0028] Furthermore, in this embodiment, the control unit 196 executes adjustment control to adjust the internal pressure of the intake manifold 140 while the idling stop control is being executed. This allows the vehicle 100 according to this embodiment to appropriately start the engine 110 when the idling stop control is released. Details of the adjustment control executed by the control unit 196 will be described later.

[0029] The storage unit 198 stores, for example, target internal pressure information. The target internal pressure information is information in which the voltage of the battery 130, the frictional resistance of the engine 110, and the target internal pressure of the intake manifold 140 are associated with each other.

[0030] The torque of the starter motor 120 depends on the voltage of the battery 130. The lower the voltage of the battery 130, the lower the voltage of the power supplied to the starter motor 120. The frictional resistance of the engine 110, also called friction, is resistance caused by friction that occurs when the engine 110 rotates. The frictional resistance of the engine 110 is determined by the temperature of the lubricating oil circulating through the engine 110, the temperature of the coolant circulating through the engine 110, and the like. The internal pressure of the intake manifold 140 is related to the rotational resistance that occurs during the compression stroke. The lower the internal pressure of the intake manifold 140, the smaller the rotational resistance.

[0031] The target internal pressure information associates the frictional resistance of the engine 110 and the voltage of the battery 130 with the target internal pressure of the intake manifold 140 that can rotate the engine 110 with the frictional resistance of the engine 110 and the voltage of the battery 130.

[0032] As described above, the lower the voltage of battery 130, the lower the voltage of the electric power supplied to starter motor 120. The lower the voltage of the electric power supplied to starter motor 120, the smaller the torque of starter motor 120. When the torque of starter motor 120 decreases, the frictional resistance and rotational resistance of engine 110 that can be overcome by that torque also decrease. For this reason, the target internal pressure information is set so that the target internal pressure of intake manifold 140 decreases as the voltage of battery 130 decreases.

[0033] The functions of the control device 190 according to this embodiment may be divided among multiple devices, or multiple functions may be realized by one device. When the functions of the control device 190 are divided among multiple devices, the multiple devices may be connected to each other via a communication bus such as a CAN.

[0034] <2. Operation of the control device> Next, the operation of the control device 190 according to the embodiment of the present invention will be described with reference to FIG.

[0035] FIG. 3 is a flowchart showing an example of the flow of idling stop processing by the control device 190 according to this embodiment.

[0036] 3, in step S110, control unit 196 determines whether or not the idling stop execution condition is satisfied. For example, control unit 196 determines that the idling stop execution condition is satisfied when the ignition is on, the vehicle speed detected by a vehicle speed sensor (not shown) is less than a vehicle speed threshold, the brake pedal (not shown) is being depressed, and the opening degree of an accelerator (not shown) is less than an opening degree threshold. As a result, if control unit 196 determines that the idling stop execution condition is satisfied (YES in step S110), control unit 196 proceeds to the process of step S112. On the other hand, if control unit 196 determines that the idling stop execution condition is not satisfied (NO in step S110), control unit 196 ends the idling stop process.

[0037] In step S112, control unit 196 executes idling stop control. As the idling stop control, control unit 196 stops fuel injection into engine 110 to stop engine 110. In this embodiment, control unit 196 fully closes throttle valve 160 at the start of idling stop control in order to reduce the internal pressure of intake manifold 140. In other words, control unit 196 fully closes throttle valve 160 before stopping engine 110. Then, when step S112 ends, control unit 196 proceeds to step S114.

[0038] In step S114, control unit 196 determines whether or not the engine start condition is satisfied. If the idling stop execution condition is no longer satisfied, for example, if the brake pedal that was depressed is released, control unit 196 determines that the engine start condition is satisfied. Control unit 196 repeats step S114 until the engine start condition is satisfied (NO in step S114), and if the engine start condition is satisfied (YES in step S114), the process proceeds to step S116.

[0039] In step S116, the calculation unit 194 calculates a target internal pressure of the intake manifold 140 based on the voltage of the battery 130.

[0040] More specifically, calculation unit 194 first calculates the friction resistance of engine 110 based on engine state data. The engine state data is, for example, the temperature of lubricating oil circulating through engine 110, the temperature of coolant circulating through engine 110, the temperature of exhaust gas before the idling stop execution condition is met, and the cumulative amount of air from when the ignition is turned on until engine 110 is stopped. The engine state data is acquired by acquisition unit 192.

[0041] Then, calculation unit 194 refers to the target internal pressure information stored in memory unit 198, and calculates the target internal pressure of intake manifold 140 based on the calculated frictional resistance and the current voltage of battery 130. The voltage of battery 130 is acquired by acquisition unit 192. Then, when step S116 is completed, control unit 196 proceeds to step S118.

[0042] In step S118, while the idling stop control is being executed, the control unit 196 executes adjustment control to adjust the internal pressure of the intake manifold 140 so that the internal pressure of the intake manifold 140 decreases as the voltage of the battery 130 decreases, before canceling the idling stop control. In this embodiment, the control unit 196 preferably controls at least one of the throttle valve 160, the suction device 230, and the opening adjustment valve 240 so that the detection value of the pressure sensor 142 becomes the target internal pressure calculated in step S116. The detection value of the pressure sensor 142 is acquired by the acquisition unit 192.

[0043] In the adjustment control, the control unit 196 may execute processing that includes adjusting the internal pressure of the intake manifold 140 by controlling the opening degree of the throttle valve 160. For example, if the detection value of the pressure sensor 142 is lower than the target internal pressure, that is, if the actual internal pressure of the intake manifold 140 is lower than the target internal pressure, the amount of air in the combustion chamber of the engine 110 may be insufficient, which may make it difficult to start the engine 110. Therefore, if the detection value of the pressure sensor 142 is lower than the target internal pressure, the control unit 196 may increase the internal pressure of the intake manifold 140 to the target internal pressure by increasing the opening degree of the throttle valve 160. In this case, air is supplied from the intake passage 150 to the intake manifold 140 through the throttle valve 160, and the internal pressure of the intake manifold 140 can be increased.

[0044] Furthermore, in the adjustment control, the control unit 196 may execute processing that includes adjusting the internal pressure of the intake manifold 140 by controlling the aperture of the aperture adjustment valve 240 of the evaporated fuel treatment device 200. For example, when the detection value of the pressure sensor 142 is lower than the target internal pressure, the control unit 196 may increase the internal pressure of the intake manifold 140 to the target internal pressure by increasing the aperture of the aperture adjustment valve 240 of the evaporated fuel treatment device 200. Because the pressure in the first flow path 210 of the evaporated fuel treatment device 200 is atmospheric pressure, opening the aperture adjustment valve 240 supplies air from the first flow path 210 to the intake manifold 140. Therefore, increasing the aperture of the aperture adjustment valve 240 supplies air from the canister 220 to the intake manifold 140, thereby increasing the internal pressure of the intake manifold 140. At this time, the control unit 196 may control the opening and closing of the aperture adjustment valve 240 taking into account the concentration of fuel gas in the canister 220. Specifically, when the concentration of fuel gas in the canister 220 is equal to or higher than the concentration threshold, the control unit 196 does not open the aperture adjustment valve 240 even if the detection value of the pressure sensor 142 is lower than the target internal pressure. The concentration threshold is, for example, the concentration of fuel gas in the canister 220 at which opening the aperture adjustment valve 240 would cause misfire in the engine 110 due to the fuel gas supplied from the canister 220 to the engine 110. In this case, the control unit 196 may increase the internal pressure of the intake manifold 140 to the target internal pressure by increasing the opening of the throttle valve 160.

[0045] Furthermore, in the adjustment control, the control unit 196 may execute processing including adjusting the internal pressure of the intake manifold 140 by controlling the suction device 230 of the evaporated fuel treatment device 200. For example, when the detection value of the pressure sensor 142 is higher than the target internal pressure, the control unit 196 may drive the suction device 230 of the evaporated fuel treatment device 200 to reduce the internal pressure of the intake manifold 140 to the target internal pressure. In this case, the control unit 196 opens the opening adjustment valve 240. As a result, air in the intake manifold 140 is sucked into the canister 220.

[0046] That is, when the internal pressure of intake manifold 140 is higher than the target internal pressure, control unit 196 may reduce the internal pressure of intake manifold 140 toward the target internal pressure. On the other hand, when the internal pressure of intake manifold 140 is lower than the target internal pressure, control unit 196 may increase the internal pressure of intake manifold 140 toward the target internal pressure. Then, when step S118 is completed, control unit 196 proceeds to the process of step S120.

[0047] In step S120, the control unit 196 cancels the idling stop control. In this embodiment, the control unit 196 drives the starter motor 120 to start the engine 110. This cancels the idling stop control, and the control unit 196 ends the idling stop processing.

[0048] <3. Vehicle Effects> Next, the effects of the vehicle 100 according to the embodiment of the present invention will be described.

[0049] A vehicle 100 according to this embodiment includes an engine 110, an intake manifold 140 connected to the engine 110, a starter motor 120 that starts the engine 110, a battery 130 that drives the starter motor 120, and a control device 190 having one or more processors 190a and one or more memories 190b connected to the processor 190a. The processor 190a executes processes including executing idling stop control and, during the execution of the idling stop control, executing adjustment control to adjust the internal pressure of the intake manifold 140 so that the internal pressure of the intake manifold 140 decreases as the voltage of the battery 130 decreases before canceling the idling stop control. As a result, the vehicle 100 according to this embodiment can reduce the internal pressure of the intake manifold 140 even when the voltage of the power supplied to the starter motor 120 is low due to deterioration of the battery 130 or the like. Therefore, vehicle 100 according to this embodiment can lower the pressure in the combustion chamber of engine 110 during the compression stroke by lowering the internal pressure of intake manifold 140. Therefore, vehicle 100 according to this embodiment can lower the rotational resistance of engine 110 by lowering the pressure in the combustion chamber of engine 110. As a result, vehicle 100 according to this embodiment can preferably perform cranking by starter motor 120 even when the voltage of the power supplied to starter motor 120 is low, and can appropriately start engine 110 when idling stop control is released.

[0050] Furthermore, it is preferable that the control unit 196 according to this embodiment fully closes the throttle valve 160 when the idling stop control starts. This allows the control unit 196 according to this embodiment to reduce the amount of air in the intake manifold 140 while the idling stop control is being executed. Therefore, the control unit 196 according to this embodiment can further lower the internal pressure of the intake manifold 140.

[0051] Furthermore, the vehicle 100 according to this embodiment includes an intake passage 150 connected to the intake manifold 140 and a throttle valve 160 provided in the intake passage 150, and the processor 190a preferably executes processing in the adjustment control that includes adjusting the internal pressure of the intake manifold 140 by controlling the opening degree of the throttle valve 160. This makes it possible for the vehicle 100 according to this embodiment to increase the internal pressure of the intake manifold 140 through a simple process of controlling the opening degree of the throttle valve 160.

[0052] Furthermore, the vehicle 100 according to this embodiment includes a first flow path 210 that is connected to the intake manifold 140 and has a canister 220 provided therein, and a suction device 230 that is provided in the first flow path 210 on the opposite side of the canister 220 from the intake manifold 140 and that draws gas from the intake manifold 140 toward the first flow path 210, and it is preferable that the processor 190a executes processing that includes adjusting the internal pressure of the intake manifold 140 by controlling the suction device 230 in the adjustment control. As a result, the vehicle 100 according to this embodiment can reduce the internal pressure of the intake manifold 140 through a simple process of controlling the suction device 230.

[0053] Furthermore, the vehicle 100 according to this embodiment includes a first flow path 210 that is connected to the intake manifold 140 and has a canister 220 provided therein, and an aperture adjustment valve 240 that is provided in the first flow path 210 on the intake manifold 140 side of the canister 220, and the processor 190a preferably executes processing in the adjustment control that includes adjusting the internal pressure of the intake manifold 140 by controlling the aperture of the aperture adjustment valve 240. As a result, the vehicle 100 according to this embodiment can increase the internal pressure of the intake manifold 140 through a simple process of controlling the aperture of the aperture adjustment valve 240.

[0054] <4. Modifications> The configuration of vehicle 100 has been described above with reference to Fig. 1. However, the configuration of the vehicle according to the present invention is not limited to the example shown in Fig. 1, and components may be deleted, changed, or added to the vehicle 100 described above as appropriate. For example, the configuration of the vehicle according to the present invention may be the configuration shown in Fig. 4. Fig. 4 is a schematic diagram showing the overall configuration of a vehicle 300 according to a modified example. As shown in Fig. 4, vehicle 300 differs from vehicle 100 described above in that it is provided with a second flow path 310, a flow rate adjustment valve 312, a second flow path 320, and a flow rate adjustment valve 322. Note that components that are substantially the same as those in vehicle 100 described above are denoted by the same reference numerals, and description thereof will be omitted.

[0055] As shown in Fig. 4, second flow paths 310, 320 connect crankcase 112 of engine 110 with intake flow path 150. Here, unburned gas or burned gas may leak into crankcase 112 from gaps between pistons and cylinders of engine 110. The gas that leaks into crankcase 112 is called blow-by gas. In vehicle 300 according to the modified example, the blow-by gas that leaks into crankcase 112 flows back from crankcase 112 to intake flow path 150 via second flow paths 310, 320.

[0056] Second flow path 310 is connected to the intake flow path 150 on the downstream side of throttle valve 160. Hereinafter, in second flow path 310, the crankcase 112 side will be referred to as the upstream side, and the intake flow path 150 side will be referred to as the downstream side.

[0057] The second flow path 310 is provided with a flow rate adjustment valve 312 and a check valve 314, arranged in this order from the upstream side. A change in the opening degree of the flow rate adjustment valve 312 changes the blow-by flow rate, which is the flow rate of blow-by gas flowing through the second flow path 310. The check valve 314 allows gas to flow from the second flow path 310 toward the intake flow path 150 and restricts gas to flow from the intake flow path 150 toward the second flow path 310. As a result, when the pressure in the second flow path 310 is higher than the pressure in the intake flow path 150, the blow-by gas flows back from the crankcase 112 to the intake flow path 150 via the second flow path 310. On the other hand, when the pressure in the intake flow path 150 is higher than the pressure in the second flow path 310, the backflow of intake air from the intake flow path 150 to the second flow path 310 is prevented.

[0058] The second flow path 320 is connected to the intake flow path 150 on the downstream side of the air cleaner 152 and on the upstream side of the throttle valve 160 .

[0059] A flow rate adjustment valve 322 is provided in the second flow path 320. By changing the opening degree of the flow rate adjustment valve 322, the blow-by flow rate, which is the flow rate of blow-by gas flowing through the second flow path 320, changes.

[0060] In the modified example, for example, in step S112, the control unit 196 fully closes the throttle valve 160 and also fully closes the flow rate control valve 312 and the flow rate control valve 322 when the idling stop control is started. That is, in the modified example, the control unit 196 fully closes the flow rate control valve 312 and the flow rate control valve 322 in addition to the throttle valve 160 before stopping the engine 110. This allows the control unit 196 according to the modified example to avoid a situation in which air is supplied from the intake passage 150 to the intake manifold 140 through the second passage 320, the crankcase 112, and the second passage 310 during execution of the idling stop control. Therefore, the vehicle 300 according to the modified example can preferably perform cranking by the starter motor 120 even when the voltage of the power supplied to the starter motor 120 is low, and can thus appropriately start the engine 110 when the idling stop control is canceled.

[0061] Furthermore, in a modified example, for example, in the adjustment control, the processor 190a preferably executes processing that includes adjusting the internal pressure of the crankcase 112 by controlling the flow rate control valves 312, 322 in addition to adjusting the internal pressure of the intake manifold 140. For example, in the adjustment control, the processor 190a may increase the internal pressure of the intake manifold 140 to a target internal pressure by increasing the opening of the flow rate control valves 312, 322 in addition to adjusting the internal pressure of the intake manifold 140. In this case, air is supplied from the intake flow path 150 to the intake manifold 140 through the second flow path 320, the crankcase 112, and the second flow path 310, and the internal pressure of the intake manifold 140 can be increased.

[0062] As a result, the vehicle 300 according to the modified example can increase the internal pressure of the intake manifold 140 by a simple process of controlling the opening degrees of the flow rate adjustment valves 312, 322.

[0063] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such embodiments. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that such modifications and alterations also fall within the technical scope of the present invention.

[0064] For example, the processes described herein using flowcharts do not necessarily have to be performed in the order shown in the flowcharts, and additional process steps may be employed or some process steps may be omitted.

[0065] Furthermore, in the above-described embodiments, the vehicle 100, 300 is provided with the pressure sensor 142 that detects the internal pressure of the intake manifold 140. However, the vehicle 100, 300 does not need to be provided with the pressure sensor 142 as long as the internal pressure of the intake manifold 140 can be acquired. For example, the vehicle 100, 300 may estimate the internal pressure of the intake manifold 140 based on the measurement value of the pressure sensor provided in the suction device 230 by opening the opening adjustment valve 240. [Explanation of symbols]

[0066] 100 vehicles 110 Engine 112 Crankcase 120 Starter motor 130 Battery 140 intake manifold 150 intake passage 160 Throttle valve 190 Control Device 190a processor 190b memory 210 First Channel 220 canister 230 Suction device 240 Opening adjustment valve 300 vehicles 310 Second Flow Path 312 Flow Control Valve 320 Second Channel 322 Flow Control Valve

Claims

1. The engine and an intake manifold connected to the engine; a starter motor for starting the engine; a battery that drives the starter motor; a control device having one or more processors and one or more memories coupled to the processors; Equipped with The processor: Executing idling stop control; During execution of the idling stop control, before canceling the idling stop control, executes adjustment control to adjust the internal pressure of the intake manifold so that the internal pressure of the intake manifold becomes lower as the voltage of the battery becomes lower; A vehicle that performs processing including:

2. an intake passage connected to the intake manifold; a throttle valve provided in the intake passage; Equipped with The vehicle according to claim 1 , wherein the processor executes a process in the adjustment control that includes adjusting the internal pressure of the intake manifold by controlling an opening degree of the throttle valve.

3. a first flow passage communicating with the intake manifold and including a canister; a suction device provided in the first flow path on an opposite side of the canister from the intake manifold, the suction device suctioning gas from the intake manifold toward the first flow path; Equipped with The vehicle according to claim 1 , wherein the processor executes a process in the adjustment control that includes adjusting the internal pressure of the intake manifold by controlling the suction device.

4. a first flow passage communicating with the intake manifold and including a canister; an opening adjustment valve provided in the first flow path on the intake manifold side with respect to the canister; Equipped with The vehicle according to claim 1 , wherein the processor executes a process including adjusting the internal pressure of the intake manifold by controlling the opening of the opening adjustment valve in the adjustment control.

5. an intake passage connected to the intake manifold; a second flow path that communicates the crankcase of the engine with the intake flow path; a flow rate adjusting valve provided in the second flow path; Equipped with 5. The vehicle according to claim 1, wherein the processor executes processing in the adjustment control that includes adjusting the internal pressure of the crankcase by controlling the flow rate adjustment valve in addition to adjusting the internal pressure of the intake manifold.

Images