JP2006161745A - Control device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve fuel consumption using a heat storage system for temporarily storing engine cooling water in a heat insulating state. <P>SOLUTION: An engine ECU carries out a program including steps of determining whether an engine has stopped (S100), outputting an operation command to an electric water pump (S110) if the engine has stopped (Yes in S100), determining whether the engine has started (S120), determining whether a mechanical water pump is operated (S130) if the engine has started (Yes in S120), and outputting a stop command to the electric water pump (S140) if the mechanical water pump is operated (Yes in S130). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle control device equipped with a heat storage system that temporarily stores a liquid medium in a heat-retaining state, and in particular, supplies a high-temperature liquid medium to an internal combustion engine or supplies a low-temperature liquid medium to an internal combustion engine. The present invention relates to a vehicle control apparatus that controls the temperature of an internal combustion engine.

  When an internal combustion engine mounted in an automobile or the like is started in a cold state, the wall surface temperature of the intake port, the combustion chamber, etc. becomes low, so that it is difficult for the fuel to atomize and flame extinguishing occurs at the periphery of the combustion chamber This will cause a decrease in startability and a deterioration in exhaust emission.

  In order to solve such problems, a water-cooled internal combustion engine is provided with a heat storage device that retains high-temperature cooling water, and the internal combustion engine is supplied with cooling water stored in the heat storage device when the internal combustion engine is started. Techniques have been proposed to increase the temperature of the engine, thereby improving startability and speeding up warm-up.

  For example, an internal combustion engine provided with a heat storage device disclosed in Japanese Patent Application Laid-Open No. 2003-184553 (Patent Document 1) is formed in a cylinder head of the internal combustion engine, and a heat medium flow passage through which a heat medium flows, and a heat medium flow A heat storage device that retains and stores a part of the heat medium flowing through the passage, a first heat medium passage that guides the heat medium from the heat storage device to the heat medium flow passage, and a second that guides the heat medium from the heat medium flow passage to the heat storage device And a passage switching means for selectively conducting the first heat medium passage and the second heat medium passage.

According to the internal combustion engine provided with this heat storage device, the passage switching means causes the first heat medium passage to conduct, so that the high-temperature heat medium stored in the heat storage device through the first heat medium passage passes through the first heat medium passage. While being directly supplied to the heat medium flow passage, the passage switching means causes the second heat medium passage to conduct, so that the high-temperature heat medium in the heat medium flow passage directly passes through the second heat medium passage. Is supplied to the heat storage device. When the heat medium is directly exchanged between the heat medium flow passage and the heat storage device in this way, heat loss when supplying the heat medium from the heat storage device to the heat medium flow passage is minimized. In addition, heat loss when supplying the heat medium from the heat medium flow path to the heat storage device is also suppressed to a minimum. As a result, even when the heat medium in the heat medium flow passage has a small amount of heat, the small amount of heat is efficiently stored in the heat storage device.
JP 2003-184553 A

  In the internal combustion engine provided with the heat storage device disclosed in Patent Document 1, a mechanical water pump and an electric water pump are provided. The mechanical water pump is connected to the crankshaft of the internal combustion engine by a belt. For this reason, when the internal combustion engine stops, the mechanical water pump stops. It is preferable to keep the temperature of the internal combustion engine within an appropriate range even when the internal combustion engine is stopped (particularly when the internal combustion engine is temporarily stopped such as idling stop). For example, if the idling stop permission condition is that the temperature of the internal combustion engine is in the proper range, or if the temperature of the lubricating oil of the internal combustion engine that is strongly related to the temperature of the internal combustion engine is in the proper range, the viscosity is low and the sliding resistance is reduced. This is because fuel efficiency is improved. In addition, if the engine is stopped while warm air is being introduced into the passenger compartment while the heater is on, the amount of heat in the heater core is determined by the amount of heat in the accumulated refrigerant (that is, while being circulated by a mechanical water pump). In addition, since only the amount of heat accumulated in the heater core can be used as a heat source for hot air), there is also a problem that it will soon become cold air. Therefore, it is meaningful to circulate the heat medium of the internal combustion engine with the electric water pump even when the internal combustion engine is stopped.

However, when switching from a mechanical water pump to an electric water pump or when switching from an electric water pump to a mechanical water pump, the amount of circulation of the heat medium fluctuates and the temperature of the internal combustion engine is adjusted appropriately. May deviate from scope. Patent Document 1 does not disclose such a problem.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heat storage system that stably improves fuel consumption by using a heat storage system that temporarily stores a liquid medium in a warm state. It is providing the control apparatus of the vehicle mounted.

  According to a first aspect of the present invention, there is provided a control device for a vehicle, comprising: a storage means for keeping a part of a liquid medium circulating in a flow path provided in an internal combustion engine; and a liquid medium in the storage means between the internal combustion engine and the storage medium. The vehicle on which the circulation means for circulating the vehicle is mounted is controlled. The circulation means includes a first pump for a liquid medium driven by an internal combustion engine and a second pump driven by electric power supplied from a power storage mechanism mounted on the vehicle. The control device includes means for detecting at least one of a stop and a stop request of the internal combustion engine, and a control for controlling to drive the second pump when detecting at least one of the stop and the stop request. Including means.

  According to the first invention, the circulation means is driven by the electric power supplied from the first pump for liquid medium (mechanical water pump) driven by the internal combustion engine and the power storage mechanism (battery) mounted on the vehicle. The liquid medium is circulated between the internal combustion engine and the storage means from at least one of these pumps (electric water pump). When the internal combustion engine stops, the operation of the first pump stops, so that the control means controls to drive the second pump when detecting at least one of the stop and stop request of the internal combustion engine. If it does in this way, it can change quickly from the 1st pump to the 2nd pump, and does not change the temperature of an internal-combustion engine, without the amount of circulation changing. Therefore, it is avoided that the temperature of the internal combustion engine deviates from the appropriate range and the idling stop condition is not satisfied, thereby improving the fuel consumption, and avoiding the temperature of the lubricating oil deviating from the appropriate range. As a result, the sliding resistance is reduced and the fuel consumption is improved. Thus, even when the internal combustion engine is stopped, the pump can be switched quickly, so that the temperature can be stably maintained within the appropriate range. Furthermore, even if the engine is stopped when hot air is introduced into the passenger compartment with the heater turned on, the problem of cold air can be solved without changing the circulation rate. As a result, it is possible to provide a vehicle control device equipped with a heat storage system that stably improves fuel consumption using a heat storage system that temporarily stores a liquid medium in a heat-retaining state.

  In the vehicle control apparatus according to the second invention, in addition to the configuration of the first invention, the control means calculates the stop and stop prediction of the first pump based on at least one of the stop and stop requests. And means for controlling to drive the second pump.

  According to the second invention, the second pump (electric water pump) can be driven when the first pump (mechanical water pump) stops due to the stop of the internal combustion engine. In addition, the second pump can be driven in advance by predicting when the first pump stops due to the stop of the internal combustion engine. If it does in this way, since a liquid medium is circulated by either pump, the temperature of an internal-combustion engine can be stably kept in an appropriate range. Particularly, the fluctuation of the circulation amount can be suppressed by overlapping the driving time of the first pump and the driving time of the second pump, and the energy loss of the internal combustion engine and the battery can be reduced by appropriately setting the overlapping time. Energy loss can be minimized.

  According to a third aspect of the present invention, there is provided a control apparatus for a vehicle, comprising: storage means for keeping a part of a liquid medium circulating in a flow path provided in an internal combustion engine; and storing the liquid medium in the storage means between the internal combustion engine and the storage medium. The vehicle on which the circulation means for circulating the vehicle is mounted is controlled. The circulation means includes a first pump for a liquid medium driven by an internal combustion engine and a second pump driven by electric power supplied from a power storage mechanism mounted on the vehicle. The control device controls to stop the driving of the second pump upon detecting at least one of the start and the start request of the internal combustion engine and at least one of the start and the start request. Control means.

  According to the third invention, the circulation means is driven by the electric power supplied from the first pump for liquid medium (mechanical water pump) driven by the internal combustion engine and the power storage mechanism (battery) mounted on the vehicle. The liquid medium is circulated between the internal combustion engine and the storage means from at least one of these pumps (electric water pump). When the internal combustion engine is stopped, the second pump is operating. The control means controls the driving of the second pump to be stopped because the first pump is activated when at least one of the start of the internal combustion engine and the start request is detected. If it does in this way, it can change quickly from the 2nd pump to the 1st pump, and does not change the temperature of an internal-combustion engine, without the amount of circulation changing. As a result, it is possible to provide a vehicle control device equipped with a heat storage system that stably improves fuel consumption using a heat storage system that temporarily stores a liquid medium in a heat-retaining state.

  In the vehicle control apparatus according to the fourth aspect of the invention, in addition to the configuration of the third aspect of the invention, the control means calculates the drive and drive prediction of the first pump based on at least one of the start and the start request. And means for controlling to stop the driving of the second pump.

  According to the fourth aspect of the invention, the driving of the second pump (electric water pump) can be stopped when the first pump (mechanical water pump) driven by the start of the internal combustion engine is driven. Further, the driving of the second pump can be stopped in advance by predicting when the first pump is driven by the start of the internal combustion engine. If it does in this way, since a liquid medium is circulated by either pump, the temperature of an internal-combustion engine can be stably kept in an appropriate range. Particularly, the fluctuation of the circulation amount can be suppressed by overlapping the driving time of the first pump and the driving time of the second pump, and the energy loss of the internal combustion engine and the battery can be reduced by appropriately setting the overlapping time. Energy loss can be minimized.

  According to a fifth aspect of the present invention, there is provided a control apparatus for a vehicle, comprising: a storage means for keeping a part of a liquid medium circulating in a flow path provided in an internal combustion engine; and a liquid medium in the storage means between the internal combustion engine and the storage medium. The vehicle on which the circulation means for circulating the vehicle is mounted is controlled. The circulation means includes a first pump for a liquid medium driven by an internal combustion engine and a second pump driven by electric power supplied from a power storage mechanism mounted on the vehicle. The vehicle is provided with a power transmission mechanism that varies the driving force transmitted from the internal combustion engine to the driving wheels. The control device includes means for detecting stop of fuel supply in the internal combustion engine, means for detecting that the vehicle is running, means for detecting the state of the power transmission mechanism, and fuel supply. When it is detected that the vehicle is running and the state in the power transmission mechanism is a non-transmission state of the driving force, a control means for controlling to drive the second pump is included.

  According to the fifth invention, when the vehicle stops, the fuel supply to the internal combustion engine is stopped (fuel cut), and the vehicle speed gradually decreases. At this time, a fuel cut time is lengthened by securing a time during which the rotation speed of the internal combustion engine is equal to or higher than the idle rotation speed, thereby improving fuel efficiency. For this reason, the power transmission mechanism (torque converter with lock-up clutch and automatic transmission, clutch and manual transmission) is brought into a power non-transmission state in order to disconnect the drive wheel that becomes the resistance of the internal combustion engine from the internal combustion engine. When the control means detects this non-transmission state, the control means drives the second pump. At this time, since the internal combustion engine is rotating, the capacity of the first pump is reduced although it is operating. Since the second pump is driven from this point in time and the circulation amount of the liquid medium is sufficiently secured, the temperature of the internal combustion engine can be stably maintained within the appropriate range.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
With reference to FIG. 1, the control block diagram of the thermal storage system which is a control object of the control apparatus concerning this Embodiment is shown.

  The heat storage system shown in FIG. 1 is applied to a vehicle equipped with an internal combustion engine (engine). This vehicle may be a vehicle equipped only with an engine or a hybrid vehicle equipped with an engine and a motor driven by a battery.

  As shown in FIG. 1, this heat storage system keeps a part of cooling water flowing through a cooling water flow path provided in a cylinder head (hereinafter referred to as a head) 100 and a cylinder block 110 in a heat storage tank 310. The cooling water is stored and supplied to the head 100 and the cylinder block 110 from the heat storage tank 310 as necessary. Cooling water is circulated by the mechanical water pump 200 between the head 100 and the cylinder block 110 and the radiator 400 or the radiator bypass passage 410. The flow rate control valve 430 controls which of the radiator 400 and the radiator bypass passage 410 passes through. The mechanical water pump 200 receives a driving force from a crankshaft of the engine via a belt. Therefore, the mechanical water pump 200 stops when the engine stops. The mechanical water pump 200 serves as engine friction.

  Cooling water is supplied from the heat storage tank 310 to the head 100 and the cylinder block 110 by the electric water pump 300. By driving the electric water pump 300, the cooling water (hot water or cold water) in the heat storage tank 310 is supplied to the head 100, the cylinder block 110, the heater core 500, etc. via the three-way valve 610. . The three-way valve 610 is in a fully closed state, a fully open state (port A, port B and port C are in communication), port A and port B are in communication, port A and port C are in communication, port B and port C Can be realized in five different states. The electric water pump 300 is driven by the pump motor by supplying electric power from the battery to the pump drive motor.

  Further, as temperature sensors of this heat storage system, an engine coolant temperature sensor 120 provided on the coolant outlet side of the head 100, a heat storage tank outlet temperature sensor 320 provided on the outlet side of the heat storage tank 310, and a radiator 400 A radiator outlet water temperature sensor 420 provided at the outlet is provided. Signals from these temperature sensors are input to an engine ECU (Electronic Control Unit) 1000.

  The engine ECU 1000 controls the electric water pump 300, the three-way valve 610, and the flow control valve 430. The flow rate control valve 430 can control the flow rate of the cooling water flowing through the radiator 400 and the flow rate of the cooling water flowing through the radiator bypass passage 410 by changing the control duty. At this time, the flow rate control valve 430 can flow cooling water only to the radiator 400, only to the radiator bypass passage 410, and to the radiator 400 and the radiator bypass passage 410. When the flow control valve 430 receives a fully open command signal from the engine ECU 1000, the flow control valve 430 controls the flow rate so that the entire amount of cooling water flows to the radiator 400. Further, when the flow control valve 430 receives a full-close command signal from the engine ECU 1000, the flow control valve 430 controls the flow rate so that the entire amount of cooling water flows through the radiator bypass passage 410. Further, the flow control valve 430 can receive a command signal from the engine ECU 1000 and control the flow rate so that a part of the cooling water flows to the radiator 400 and the remaining cooling water flows to the radiator bypass passage 410. .

  Further, engine ECU 1000 can control the discharge rate of electric water pump 300 by changing the control duty of the motor that drives electric water pump 300 to control the number of revolutions of the motor. Further, this control may be performed by making the voltage of the motor of the electric water pump 300 variable. Further, by changing the energization time of the motor of the electric water pump 300, the driving time of the electric water pump 300 is controlled to control the total amount of cooling water discharged from the electric water pump 300. Good.

  A control structure of a program executed by engine ECU 1000 of FIG. 1 will be described with reference to FIG.

  In step (hereinafter step is abbreviated as S) 100, engine ECU 1000 determines whether the engine has stopped, for example, when an idling stop system permission condition is satisfied. This determination is made, for example, based on whether or not the engine speed has become equal to or lower than a predetermined speed (0 rpm or the like). When the engine stops (YES in S100), the process proceeds to S110. If not (NO in S100), the process returns to S100 and waits until the engine stops.

  In S110, engine ECU 1000 outputs an operation command signal to electric water pump 300. As a result, the mechanical water pump 200 does not operate when the engine is stopped. However, the electric water pump 300 does not operate and the circulating amount of the cooling water in the cooling water pipe does not decrease, and the cooling water temperature falls within an appropriate range. Can be maintained.

  In S120, engine ECU 1000 determines whether or not the engine has started (engine restart in the case of return from idling stop). This determination is made, for example, based on whether or not the engine speed has reached or exceeded a predetermined speed (idling speed or the like). When the engine is started (YES in S120), the process proceeds to S130. If not (NO in S120), the process returns to S120 and waits until the engine starts.

  In S130, engine ECU 1000 determines whether mechanical water pump 200 has been operated or not. This determination is made, for example, based on whether or not a predetermined time has elapsed since the start of the engine was detected. When mechanical water pump 200 is activated (YES in S130), the process proceeds to S140. If not (NO in S130), the process returns to S130 and waits until mechanical water pump 200 is activated.

  In S140, engine ECU 1000 outputs a stop command signal to electric water pump 300. As a result, the electric water pump 300 does not operate. However, since the mechanical water pump 200 operates, the circulation amount of the cooling water in the cooling water conduit does not decrease, and the cooling water temperature falls within an appropriate range. Can be maintained.

  The operation of the control device for the heat storage system according to the present embodiment based on the above-described structure and flowchart will be described.

  For example, when a vehicle equipped with an idling stop system is temporarily stopped by a red light or the like and the idling stop condition is satisfied, the engine is stopped (YES in S100). When the engine is stopped (YES in S100), electric water pump 300 is operated to circulate the engine coolant. At this time, the mechanical water pump 200 is not operating, but since the electric water pump 300 is operating, the circulation amount does not decrease, and a desired amount of cooling water can be circulated through the cooling water pipe. .

  If the idling stop condition is not satisfied, the engine starts (YES in S120). When engine is started and mechanical water pump 200 is activated (YES in S130), electric water pump 300 is stopped (S140). At this time, the electric water pump 300 does not operate, but since the mechanical water pump 200 has started to operate, the circulation amount does not decrease and a desired amount of cooling water can be circulated through the cooling water pipe. it can.

  As described above, according to the heat storage system according to the present embodiment and the engine ECU which is the control device thereof, when the stop of the engine driving the mechanical water pump is detected, the electric water pump is operated. Control. In this way, the mechanical water pump can be quickly switched to the electric water pump, and the temperature of the internal combustion engine is not fluctuated without fluctuation of the circulation amount. Therefore, it is possible to avoid the engine cooling water temperature from deviating from the appropriate range. Thereby, for example, it is avoided that the idling stop condition is not satisfied, and the fuel efficiency is improved, or the oil temperature of the lubricating oil is avoided from deviating from an appropriate range, and the sliding resistance is reduced and the fuel efficiency is improved. .

<Second Embodiment>
Hereinafter, the control apparatus for the heat storage system according to the second embodiment of the present invention will be described. The control block diagram of the heat storage system according to the present embodiment is the same as the control block diagram of the heat storage system according to the first embodiment described above. Therefore, detailed description thereof will not be repeated.

  In the control device for the heat storage system according to the present embodiment, unlike the control device for the heat storage system according to the first embodiment, the electric water pump is activated by detecting that the vehicle has stopped. Rather, the feature is that the electric water pump 300 is activated in advance before the engine is actually stopped by detecting the engine stop request.

  A control structure of a program executed by engine ECU 1000 will be described with reference to FIG. In the flowchart shown in FIG. 3, the same steps as those in the flowchart shown in FIG. 2 are given the same step numbers. The processing for them is the same. Therefore, detailed description thereof will not be repeated here.

  In S200, engine ECU 1000 determines whether an engine stop request has been detected. This determination is made based on, for example, the established state of the idling stop condition. If an engine stop request is detected (YES in S200), the process proceeds to S110. If not (NO in S200), the process returns to S200 and waits until an engine stop request is detected.

  As described above, according to the heat storage system according to the present embodiment and the engine ECU which is the control device thereof, when the stop request of the engine driving the mechanical water pump is detected, the engine is stopped (mechanical water The electric water pump is controlled to operate in advance before the pump is stopped. In this way, the operation of the mechanical water pump and the operation of the electric water pump can be switched in an overlapping manner, the circulation amount does not decrease, and the engine coolant temperature does not fluctuate. The overlap period is preferably set so that the overall energy loss is minimized.

<Third Embodiment>
Hereinafter, the control apparatus for the heat storage system according to the third embodiment of the present invention will be described. In the present embodiment, as in the second embodiment, the control block diagram is the same as the control block diagram of the heat storage system in the first embodiment. Therefore, detailed description thereof will not be repeated here.

  In the control device according to the present embodiment, the fuel cut is performed while the vehicle is running, and the lockup clutch of the torque converter of the automatic transmission or the clutch of the manual transmission (hereinafter referred to as the lockup clutch). In addition, the clutch of the manual transmission is also described as a clutch).

  A control structure of a program executed by engine ECU 1000 will be described with reference to FIG. In the flowchart shown in FIG. 4, the same steps as those in the flowchart shown in FIG. The processing for them is the same. Therefore, detailed description thereof will not be repeated here.

  In S300, engine ECU 1000 determines whether or not a fuel cut is in progress. This determination is made based on, for example, a flag that engine ECU 1000 sets during fuel cut. If the fuel is being cut (YES in S300), the process proceeds to S310. Otherwise (NO in S300), this process ends.

  In S310, engine ECU 1000 determines whether or not the vehicle has stopped. This determination is made based on, for example, a signal input to engine ECU 1000 from a vehicle speed sensor or an output shaft rotational speed sensor of the transmission. When the vehicle stops (YES in S310), this process ends. If not (NO in S310), the process proceeds to S320.

  In S320, engine ECU 1000 determines whether or not the clutch is in a power non-transmission state. This determination is made based on, for example, a signal input from transmission ECU to engine ECU 1000. If the clutch is in a power non-transmission state (YES in S320), the process proceeds to S110. If not (NO in S320), the process returns to S320 and waits until the clutch is in a power non-transmission state.

  The operation of the control device for the heat storage system according to the present embodiment based on the above structure and flowchart will be described with reference to FIG.

  If the driver does not operate the accelerator while the vehicle is running, the engine speed and the like satisfy the fuel cut conditions (time t (1)) (YES in S300), and the vehicle is not stopped (time t (1) to t (3)) (NO in S310), the connection between the driving wheel and the engine, which becomes the friction of the engine, is extended in order to extend the fuel cut time. Therefore, the clutch is brought into a power non-transmission state (time t (2)) (YES in S320).

  When the clutch is in a power non-transmission state (YES in S320), electric water pump 300 is operated (S110).

  When the operation of the electric water pump 300 is started when the vehicle is stopped (time t (3)), the circulating amount of cooling water may decrease in the vicinity of time t (3), as indicated by a one-dot chain line. However, in the present invention, since the electric water pump 300 is operated when the clutch is in a power non-transmission state (time t (2)), the cooling water circulation amount does not decrease as shown by the solid line. .

  As described above, according to the heat storage system according to the present embodiment and the engine ECU which is the control device thereof, the power transmission between the engine and the drive wheels is made non-transmitted while the vehicle is running and the fuel is cut. Then, control is performed so that the electric water pump is operated in advance before the engine is stopped (before the mechanical water pump is stopped). In this way, the operation of the mechanical water pump and the operation of the electric water pump can be switched in an overlapping manner, the circulation amount does not decrease, and the engine coolant temperature does not fluctuate. In particular, since the electric water pump operates, the friction caused by the mechanical water pump, which is the engine load, may be reduced, reducing the engine speed and extending the fuel cut time, improving fuel economy Can be made.

<Fourth embodiment>
Hereinafter, control block diagrams of other heat storage systems that can be used in common with FIGS. 2, 3, and 4 will be described.

  As shown in FIG. 6, this heat storage system is also controlled by engine ECU 1000 as in the first to third embodiments described above. A difference from the control block diagram shown in FIG. 1 is the position of the electric water pump 302.

  The electric water pump 302 has the same function as the electric water pump 300 of FIG. 1 described in the first embodiment, but the position is different. Also in such a heat storage system shown in FIG. 6, when the engine ECU 1000 executes the program represented by the flowcharts shown in FIGS. 2, 3, and 4, the mechanical water pump driven by the engine stops or Operate the electric water pump before stopping. In addition, when the vehicle is traveling and the clutch is in a power non-transmission state during fuel cut, the electric water pump is operated before the vehicle stops. In this way, it is possible to avoid a decrease in the circulating amount of the cooling water when switching between the operation of the mechanical water pump and the operation of the electric water pump, and the engine cooling water temperature is not changed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a control block diagram of the heat storage system which concerns on the 1st Embodiment of this invention. It is a figure which shows the flowchart which shows the control structure of the program performed by engine ECU of FIG. It is a figure which shows the flowchart which shows the control structure of the program performed by engine ECU of the thermal storage system which concerns on the 2nd Embodiment of this invention. It is a figure which shows the flowchart which shows the control structure of the program performed by engine ECU of the thermal storage system which concerns on the 3rd Embodiment of this invention. It is a figure which shows the timing chart in the thermal storage system which concerns on the 3rd Embodiment of this invention. It is a control block diagram of the heat storage system which concerns on the 4th Embodiment of this invention.

Explanation of symbols

  100 Cylinder Head, 110 Cylinder Block, 120 Engine Cooling Water Temperature Sensor, 200 Mechanical Water Pump, 300, 302 Electric Water Pump, 310 Thermal Storage Tank, 320 Thermal Storage Tank Outlet Temperature Sensor, 400 Radiator, 410 Radiator Bypass Path, 420 Radiator Outlet water temperature sensor, 430 flow rate control valve, 500 heater core, 610 three-way valve, 1000 engine ECU.

Claims (5)

A storage means for keeping a part of a liquid medium circulating in a flow path provided in the internal combustion engine to keep warm, and a circulation means for circulating the liquid medium in the storage means between the internal combustion engine are mounted. In the vehicle control apparatus, the circulation means is driven by electric power supplied from the first pump for the liquid medium driven by the internal combustion engine and a power storage mechanism mounted on the vehicle. 2 pumps,
The controller is
Means for detecting at least one of a stop and a stop request of the internal combustion engine;
A control device for a vehicle, including control means for controlling to drive the second pump when detecting at least one of the stop and the stop request.   The control means includes means for controlling to calculate the stop and stop prediction of the first pump based on at least one of the stop and stop requests and to drive the second pump. The vehicle control device according to claim 1. A storage means for keeping a part of a liquid medium circulating in a flow path provided in the internal combustion engine to keep warm, and a circulation means for circulating the liquid medium in the storage means between the internal combustion engine are mounted. In the vehicle control apparatus, the circulation means is driven by electric power supplied from the first pump for the liquid medium driven by the internal combustion engine and a power storage mechanism mounted on the vehicle. 2 pumps,
The controller is
Means for detecting at least one of a start and a start request of the internal combustion engine;
A control apparatus for a vehicle, including control means for controlling to stop driving of the second pump when detecting at least one of the start and the start request.   The control means calculates the drive and drive prediction of the first pump based on at least one of the start and the start request, and controls to stop the drive of the second pump. The vehicle control device according to claim 3. A storage means for keeping a part of a liquid medium circulating in a flow path provided in the internal combustion engine to keep warm, and a circulation means for circulating the liquid medium in the storage means between the internal combustion engine are mounted. In the vehicle control apparatus, the circulation means is driven by electric power supplied from the first pump for the liquid medium driven by the internal combustion engine and a power storage mechanism mounted on the vehicle. The vehicle is provided with a power transmission mechanism that varies the driving force transmitted from the internal combustion engine to the driving wheels,
The controller is
Means for detecting a stop of fuel supply in the internal combustion engine;
Means for detecting that the vehicle is running;
Means for detecting the state of the power transmission mechanism;
When it is detected that the fuel supply is stopped, the vehicle is running, and the state in the power transmission mechanism is a non-transmission state of driving force, the second pump is controlled to be driven. A vehicle control apparatus including a control means.

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