WO2019116561A1 - ハイブリット車両のガス欠復帰判定方法とその車両制御装置 - Google Patents
ハイブリット車両のガス欠復帰判定方法とその車両制御装置 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/46—Series type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0676—Engine temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/209—Fuel quantity remaining in tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0605—Throttle position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/081—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- the present invention relates to a gas shortage return determination method and a vehicle control apparatus therefor which are performed after gas shortage determination (gas shortage detection) of a hybrid vehicle.
- Patent Document 1 a method disclosed in Patent Document 1 is known as a gas shortage determination method for a hybrid vehicle.
- Patent Document 1 performs an engine start control for starting an engine for a predetermined time, and determines that the gas is out when the engine does not operate autonomously after the predetermined time has elapsed. And it is a method to judge similarly whether it returned from gas exhaustion. That is, if the autonomous operation of the engine can be detected even for a moment, it will be judged as the gas shortage return. Therefore, there was a possibility that the gas shortage return could not be judged correctly.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for determining gas shortage recovery of a hybrid vehicle that can correctly determine gas shortage recovery, and a control device for the vehicle.
- the method for determining a gas shortage return of a hybrid vehicle executes the rotation speed control of a generator for a predetermined time and starts the rotation of the engine thereafter when the hybrid vehicle is started after the gas shortage determination.
- the state where the number is higher than the threshold value is detected beyond the first determination time, it is determined that the gas shortage return.
- FIG. 1 It is the block diagram which illustrated the partial composition of the vehicle provided with the gas lack return judging part concerning a 1st embodiment of the present invention. It is a flowchart which shows an example of the process sequence of the gas absence return determination method which the gas absence return determination part shown in FIG. 1 performs. It is a flowchart which shows an example of the process sequence following the flowchart shown in FIG. It is a figure which shows the signal which changes with the process shown in FIG.2 and FIG.3, and is a time chart in the case where gas starvation is not carried out. It is a figure which shows the signal which changes with the process shown in FIG.2 and FIG.3, and is a time chart at the time of gas starvation.
- FIG. 1 is a block diagram illustrating a partial configuration of a vehicle provided with a gas shortage return determination unit according to a first embodiment of the present invention.
- the vehicle 1 shown in FIG. 1 will be described by taking, for example, a series hybrid vehicle as an example.
- a vehicle 1 shown in FIG. 1 includes a system controller 10, an engine controller 20, a generator controller 30, an engine 40, a generator 50, a battery (not shown), a fuel tank 60, and the like.
- the system controller 10 includes an out-of-gassing return determination unit (out-of-gassing return determination circuit) 11 according to the present embodiment.
- the system controller 10, the engine controller 20, and the generator controller 30 can be configured, for example, as an integrated computer including storage means such as a central processing unit (CPU), a RAM, a ROM, and a hard disk.
- storage means such as a central processing unit (CPU), a RAM, a ROM, and a hard disk.
- the vehicle 1 uses the driving force of the engine 40 only for power generation.
- the engine 40 and the generator 50 are connected via a gear, and the driving power of the engine 40 drives the drive motor (not shown) by the power generated by the generator 50.
- the system controller 10 sends an engine torque command to the engine controller 20 and a generator controller according to the driver's accelerator pedal operation amount, vehicle speed, vehicle conditions such as road surface gradient, battery information from a battery controller (not shown), etc. Output the power generation torque command to 30.
- the engine controller 20 adjusts the throttle opening of the engine 40, the ignition timing, and the fuel injection amount in order to realize the engine torque command.
- the generator controller 30 controls the generator 50 according to conditions such as the number of revolutions and voltage of the generator in order to realize the generator torque command.
- the system controller 10 performs the out-of-gassing determination based on the fuel level FL output from the fuel level sensor 61 and the open / close signal OCS of the filler opening / closing sensor 62.
- the out-of-gas determination is made based on, for example, the elapsed time since the open / close signal OCS is generated, and the value of the fuel level FL.
- There are various other methods of gas shortage determination For example, the determination may be performed based on only the value of the fuel level FL, or the gas shortage determination may be performed based on the fuel consumption amount obtained from the fuel injection amount.
- the out-of-gas determination is performed by the out-of-gas determination circuit (not shown) in the system controller 10.
- out-of-gassing recovery determination unit 11 will be described on the premise that the out-of-gassing determination is performed by some method.
- the gas shortage recovery determination unit 11 determines whether or not it has recovered from the gas shortage (gas shortage recovery determination).
- gas shortage recovery determination determines whether or not it has recovered from the gas shortage.
- the rotation speed control of the generator 50 is performed for a predetermined time and then stopped, and the state where the rotation speed of the engine 40 thereafter is larger than the threshold is constant If it is detected over time, it is determined that the out of gas return.
- the ignition switch IS being turned on is the time to start the driving of the hybrid vehicle.
- an operation of turning on a switch such as pressing a start button near the driver's seat or raising and lowering a switch is included.
- the key when starting the driving of the hybrid vehicle, the key may be twisted or the driver may get on the vehicle.
- the out-of-gassing recovery determination method it is detected that the engine 40 rotates beyond a predetermined time, so that the out-of-gassing recovery can be reliably detected. Therefore, it is possible to suppress erroneous detection of gas shortage recovery.
- the processing procedure of the gas shortage recovery determination method will be shown and the operation thereof will be described in detail.
- step S1 the gas shortage return determination unit 11 starts operation.
- Step S2 the operation starts first whether the gas deficient state confirmed by gas deficient state determination flag f GK (Step S2). If the out-of-gas state determination flag f GK is false (for example, the logic level 0), processing for normal engine start-up in which the illustration after the connector A is omitted is performed. In this case, the gas shortage return determination unit 11 immediately ends the started operation.
- the out-of-gassing return determination unit 11 starts the process of the out-of-gassing determination method (YES in step S2). The following description will be made also with reference to FIG.
- FIG. 4 is a time chart showing the processing procedure of the gas shortage recovery determination method.
- the horizontal direction in FIG. 4 represents time, and the vertical direction represents each signal.
- the longitudinal dimension of each signal is different for each signal. Each of the dimensions will be described as needed.
- the gas shortage recovery determination unit 11 When the process of the gas shortage recovery determination method is started, the gas shortage recovery determination unit 11 outputs the generator / rotational speed control request ⁇ to the generator controller 30 (step S3). Then, an engine start request flag f ES is set to indicate that a start request has been made to the engine for the purpose of the determination of gas shortage recovery (step S4).
- the generator / speed control request ⁇ and the engine start request flag f ES are signals of logic level 1 or 0.
- the generator controller 30 rotates the generator 50 when the generator / rotational speed control request ⁇ is input.
- Rpm beta of the generator 50 and the engine 40 connected via a gear increases from beta 0 revolution 0, reaches the rotational speed beta 1 defined by the generator-speed control request alpha.
- the out-of-gassing recovery determination unit 11 receives the information from the engine controller 20.
- Out of gas return determination unit 11 which rotates a few beta has received the arrival at the rotational speed beta 1 of the engine 40 outputs a fuel injection request ⁇ to the engine controller 20 (step S5).
- the out-of-gassing return determination unit 11 that has output the fuel injection request ⁇ starts measurement of a predetermined time (step S6).
- the predetermined time is a time required for the engine 40 to start autonomous operation with the generator 50 being rotated and fuel supply being started.
- the out-of-gassing recovery determination unit 11 continues to output the generator / rotational speed control request ⁇ (NO loop of step S7).
- the count value ⁇ of the timer that counts the predetermined time increases with the passage of time.
- the complete detonation determination start signal ⁇ is generated inside the gas shortage recovery determination unit 11.
- the out-of-gassing recovery determination unit 11 stops the output of the generator / rotational speed control request ⁇ (step S8).
- the complete explosion means that the engine 40 has started an explosion and has operated autonomously.
- the predetermined time may be changed according to the engine water temperature of the engine 40 as shown in Table 1. For example, if the engine water temperature is ⁇ 20 ° C. or less, the predetermined time is changed to 30 seconds, if it is ⁇ 10 ° C., 20 seconds, and if it is higher than 10 seconds, the predetermined time is changed.
- the predetermined time corresponds to some of a plurality of predetermined ranges of the engine water temperature, and the predetermined time corresponding to the range where the engine water temperature is high is shorter than the predetermined time corresponding to the range where the engine water temperature is low.
- the engine 40 can be reliably operated autonomously in the gas shortage recovery state. As a result, it is possible to accurately determine the gas shortage recovery.
- the out-of-gassing recovery judgment unit 11 After stopping the output of the generator / rotational speed control request ⁇ , the out-of-gassing recovery judgment unit 11 resets a variable i for counting the number of repetitions to 0 (step S9). The repeated processing will be described later.
- the out-of-gassing recovery judgment unit 11 outputs the engine / rotational speed control request ⁇ to the engine controller 20 (step S10).
- the engine / speed control request ⁇ is digital numerical information.
- the engine controller 20 controls the engine 40 with a fuel injection amount and an ignition timing that match the numerical values of the engine and speed control request.
- the out-of-gassing recovery determination unit 11 starts counting the out-of-gassing time (step S11).
- the out-of-gas recovery time is defined as the time in which the rotational speed ⁇ of the engine 40 is higher than the threshold value R TH .
- the out-of-gas recovery time is measured by a timer in the same manner as the above-described predetermined time.
- the count value ⁇ of the timer that counts gas recovery time increases with the passage of time.
- step S8 After stopping the output of the generator / speed control request ⁇ (step S8), if the engine 40 starts the autonomous operation, the engine 40 maintains the speed ⁇ corresponding to the numerical value of the engine / speed control request ⁇ And continues to rotate (the alternate long and short dash line in FIG. 4). On the other hand, when the engine 40 does not start the autonomous operation, the rotational speed ⁇ decreases until free stop due to friction (solid line where ⁇ in FIG. 4 decreases). The example shown in FIG. 4 shows the case where the engine 40 does not start the autonomous operation.
- Out of gas recovery determination unit 11 determines that returning from out of gas if exceeds the first determination time T A gas shortage recovery time preset (YES in step S13). That is, it is determined that fuel is present in the fuel tank 60 and autonomous operation of the engine 40 is possible. The description with reference to the time chart will be described later with respect to the gas shortage recovery state.
- the out-of-gassing recovery determination unit 11 starts counting the out-of-gassing determination time (step S16).
- the out-of-gas determination time is counted by a timer in the same manner as the above-described predetermined time and out-of-gas recovery time.
- the count value ⁇ of the timer that counts the out-of-gas determination time increases with the passage of time.
- the out-of-gassing recovery determination unit 11 counts the out-of-gassing determination time in which the rotational speed ⁇ of the engine 40 is less than the threshold value R TH (NO in step S18). If exceeds the second determination time T B which gas shortage determination time is set in advance, the engine 40 is determined not to autonomous operation, it sets the gas deficient state determination flag f GK (Step S19). In the case of this example, the state of the out-of-gas state determination flag f GK set to “true” is maintained.
- the gas shortage recovery judgment unit 11 resets the engine start request flag f ES (step S20). That is, the engine start request flag f ES falls to logic level 0. Further, the output of the fuel injection request ⁇ to the engine controller 20 and the engine / rotational speed control request ⁇ is stopped (step S21), and the process of the gas shortage return determination method is ended.
- FIG. 5 is a time chart showing the processing procedure of the gas shortage return determination method in the gas shortage return state.
- the out-of-gassing recovery judgment unit 11 stops the output of the generator / rotational speed control request ⁇ and outputs the engine / rotational speed control request ⁇ to the engine controller 20 (step S10), It differs from FIG. 4 in that ⁇ continues to rotate above the threshold R TH .
- out of gas recovery determination unit 11 determines that capable of autonomous operation of the engine 40, to reset the gas deficient state determination flag f GK (Step S14). Then, the engine start request flag f ES is reset (step S20), and the output of the fuel injection request ⁇ and the engine speed control request ⁇ to the engine controller 20 is stopped (step S21). Finish.
- the engine controller 20 is requested to control the rotational speed after a predetermined time has elapsed after the engine controller 20 controlling the engine 40 is requested to inject fuel.
- rotational speed of 40 starts counting the threshold R TH or in which time, if the time was at the regimen is exceeds the first determination time T a is determined that out of gas return, time and time the regimen is the first determination time T a If not exceeding, the rotation number ⁇ of the engine 40 starts counting the time that is less than the threshold value R TH, time and time the regimen is to maintain the gas shortage determination if it exceeds the second determination time T B.
- this gas recovery determination method it is possible to correctly determine the out-of-gas recovery.
- the gas recovery judgment method can separate the processing between the normal time and the gas shortage recovery judgment time. Therefore, it is possible to make a difference between the generated torque command and the engine torque command at the start of the normal engine 40 performed after the connector A and the two torque commands at the time of the gas shortage recovery determination. Therefore, the value of the torque command can be changed according to the purpose, such as 40 Nm for the engine torque command in normal times, and 5 Nm for gas recovery judgment, for example. By setting the engine torque command to a small value, it is possible to more accurately perform the out-of-gas return determination.
- the first determination time T A and the second determination time T B may be the same duration, it may be different from time width.
- the second determination time T B is longer than the first determination time T A.
- the first determination time T A may be varied to correspond to a predetermined time as well as the engine coolant temperature above.
- the “predetermined time (seconds)” in Table 1 is changed to “first determination time T A (seconds)”, and the relationship of “values” is, for example, the same. That is, the first determination time T A when the engine coolant temperature is high, shorter than the first determination time if the engine water temperature is low. With this setting, the engine 40 can be reliably operated autonomously in the gas shortage recovery state.
- the gas lack state when it is not resolved, it may repeat the engine stall in the first determination time T A. In that case, the number of times the engine speed ⁇ of the engine 40 is less than the threshold value R TH may be counted, and the determination of the out-of-gas condition may be maintained if the number becomes a predetermined number.
- the out-of-gas state determination will be described.
- the flowchart shown in FIG. 3 also includes a processing step of counting the number of times that the rotational speed ⁇ of the engine 40 falls below the threshold value R TH . The operation will be described with reference to FIGS. 3 and 6.
- FIG. 6 is different from FIGS. 4 and 5 in that FIG. 6 shows that engine stall is repeated while the out-of-gassing recovery judgment unit 11 is outputting the engine / rotational speed control request ⁇ .
- the rotational speed ⁇ of the engine 40 immediately after the out-of-gassing recovery determination unit 11 outputs the engine / speed control request ⁇ ⁇ ⁇ is the rotational speed ⁇ that has been rotated by the generator 50. Thereafter, when the engine 40 starts the autonomous operation, the rotational speed ⁇ becomes equal to the numerical value of the engine / speed control request ⁇ . However, when the engine 40 does not start autonomous operation, the number of revolutions ⁇ thereof decreases according to the free cushion (NO in step S12).
- the gas shortage return determination unit 11 increments a variable i for counting the number of repetitions (step S23). After incrementing the variable i, it is determined whether or not the variable i is 2 or more (step S24).
- the out-of-gassing recovery determination unit 11 starts counting of the out-of-gassing time again (step S11). That is, the count value ⁇ of the timer that counts the gas shortage recovery time is counted up (NO loop of step S13).
- step S25 When the variable i becomes 2, the variable i is reset (step S25), and the out-of-gas state determination flag f GK is immediately set (step S19). In the case of this example, the state of the out-of-gas state determination flag f GK set to “true” is maintained.
- a first determination time T A is determined out of gas return when the rotation number ⁇ of the engine 40 is equal to or greater than the threshold value R TH, using the same first determination time T A and first time
- the length of determination time may be changed.
- FIG. 7 is a flowchart showing a part of the processing procedure of the gas shortage recovery determination method according to the second embodiment.
- the third determination time T C is a time in which the determination time is determined.
- the time width of the third determination time T C is the third determination time T C> first determination time T A.
- step S17 After the first engine stall (NO in step S17), when the engine 40 resumes rotation at a rotational speed ⁇ equal to or higher than the threshold value R TH , the out-of-gassing return determination unit 11 starts counting the out-of-gassing time again (step S30).
- the count value ⁇ of the timer that counts the gas shortage recovery time increases with the passage of time (the second ⁇ in FIG. 8).
- step S14 shows how the out-of-gas state determination flag f GK is reset.
- the out-of-gas determination flag f GK is set (step S19).
- the gas shortage recovery determination method As described above, according to the gas shortage recovery determination method according to the present embodiment, after the number of revolutions of the engine 40 becomes less than the threshold R TH during counting of the time during which the number of revolutions ⁇ of the engine 40 is the threshold R TH or more If 40 rotation number ⁇ of equal to or greater than a threshold value R TH, and starts counting the time rotation number ⁇ of the engine 40 is equal to or greater than the threshold R TH, time and time the regimen is longer than the first determination time T a If the third determination time T C is exceeded, it may be determined that the out of gas return. As a result, it is possible to carry out more accurate gas shortage recovery determination.
- the rotation speed control of the generator 50 is performed for a predetermined time and then stopped, and the rotation speed ⁇ of the engine 40 thereafter is a threshold above R TH state is detected beyond the first determination time T a is determined that out of gas recovery. That is, after the rotation speed control of the generator 50 times out, the confirmation of the gas shortage recovery determination is started from the timing at which the engine controller 20 starts the autonomous operation control. Thus, the out-of-gas condition can be determined correctly. As a result, unnecessary power consumption consumed by the rotation speed control of the generator 50 when starting the engine 40 can be reduced.
- the rotational speed control may be changed.
- the target rotational speed of the rotational speed control of the generator 50 is made different between the normal time and the gas shortage return determination time.
- the target rotational speed input for the purpose of rotational speed control to the generator controller 30 that controls the generator 50 is input for the purpose of starting power generation to the generator controller 30 when the determination of the gas shortage recovery is not performed. Higher than the target speed.
- the target rotational speed is high, and therefore the frequency of ratra noise can be increased. And the discomfort due to the rattra noise can be reduced.
- the target rotation speed of the rotation speed control of the generator 50 is higher than the target rotation speed of the rotation speed control of the generator 50 in the case of starting the engine 40 without performing the above-described determination of gas shortage recovery.
- the gas shortage recovery determination can be performed more appropriately, and the normal start of the engine 40 can be performed more appropriately.
- the embodiment described above has been described as an example in which the gas shortage recovery determination is performed once as shown in FIG. 4, FIG. 5, FIG. 6, and FIG. It is also possible to determine a missing return.
- the number of revolutions of the engine 40 is set to 0 ⁇ the engine start request flag f ES is set, and the process is repeated, for example, three times.
- the gas shortage determination may be maintained when it is not determined that the gas shortage recovery has been made three consecutive times. This makes it possible to reliably determine the out-of-gas return.
- the gas shortage return can be determined more reliably by performing the gas shortage return determination a plurality of times.
- too many attempts should be avoided as it leads to an increase in unnecessary power consumption consumed by the rotation speed control of the generator 50.
- the control of the number of revolutions of the generator 50 is executed again for a predetermined time and then stopped.
- counting the time the rotational speed of the engine 40 is equal to or larger than the threshold R TH is started with requesting the rotational speed control to the engine controller 20, the engine 40 speed of the engine 40 during measurement of the threshold R TH or in a time
- the number of repetitions is counted, and when the number of rotations reaches a predetermined number, the out-of-gassing state is maintained. This makes it possible to more reliably determine the gas shortage recovery.
- the present invention is not limited to this, and composition of each part has the same function. It can be replaced with one of the configuration of.
- the configuration described in the first embodiment can be applied to the second embodiment, and the same effect can be obtained from the configuration.
- the series hybrid vehicle has been described as an example, but the invention can also be applied to a parallel hybrid vehicle.
- each functional unit of the above-described embodiment may be implemented by one or more processing circuits.
- the processing circuitry comprises a programmed processing device, such as a processing device that includes an electrical circuit.
- the processing device may also include devices such as application specific integrated circuits (ASICs) and conventional circuit components arranged to perform the functions described in the embodiments.
- ASICs application specific integrated circuits
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- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
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- Hybrid Electric Vehicles (AREA)
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Abstract
Description
図1は、本発明の第1実施形態に係るガス欠復帰判定部を備えた車両の一部構成を例示したブロック図である。図1に示す車両1は、例えばシリーズハイブリッド車両を例に説明する。
一方ガス欠状態であると、第1判定時間TA以内にエンジン40の回転数βは、閾値RTHを下回る(ステップS12のNO)。第1判定時間TA以内に回転数βが閾値RTHを下回ると、ガス欠復帰判定部11は、直ちにガス欠復帰時間の計時を停止し、ガス欠復帰時間を計時するタイマーのカウント値ηをリセットする(ステップS15)。
図5は、ガス欠復帰状態におけるガス欠復帰判定方法の処理手順を示すタイムチャートである。図5は、ガス欠復帰判定部11が発電機・回転数制御要求αの出力を停止し、エンジンコントローラ20にエンジン・回転数制御要求ζを出力(ステップS10)した後に、エンジン40の回転数βが閾値RTHを上回って回転し続ける点で図4と異なる。
このガス復帰判定方法によればガス欠復帰を正しく判定できる。
図3に示すフローチャートは、エンジン40の回転数βが閾値RTH未満になる回数を計数する処理ステップも含む。図3と図6を参照してその動作を説明する。
図7は、第2実施形態に係るガス欠復帰判定方法の一部の処理手順を示すフローチャートである。図7は、ガス欠復帰判定部11がエンジン・回転数制御要求ζを出力中に一度エンジンストールした後に、何らかの理由によりエンジン40が回転を再開した場合(ステップS17のNO)に用いるガス欠復帰を判定する時間を第3判定時間TCとしたフローチャートである。例えば、第3判定時間TCの時間幅は、第3判定時間TC>第1判定時間TAである。
10 システムコントローラ
11 ガス欠復帰判定部(ガス欠復帰判定回路)
20 エンジンコントローラ
30 発電機コントローラ
40 エンジン
50 発電機
60 燃料タンク
61 燃料レベルセンサ
62 給油口開閉センサ
IS イグニッションスイッチ
OCS 開閉信号
FL 燃料レベル
RTH 閾値
fGK ガス欠状態判定フラグ
fES エンジン始動要求フラグ
TA 第1判定時間
TB 第2判定時間
TC 第3判定時間
α 発電機・回転数制御要求
β 回転数
γ 燃料噴射要求
δ 所定時間のカウント値
ε 完爆判定開始信号
η ガス欠復帰時間のカウント値
ζ エンジン・回転数制御要求
θ ガス欠判定時間のカウント値
Claims (9)
- エンジンと、該エンジンによって駆動され車両駆動用の電力を生成する発電機を備えたハイブリッド車両において、ガス欠判定した後に実行されるガス欠復帰判定方法であって、
前記ハイブリッド車両の運転を開始する時に、前記発電機の回転数制御を所定時間の間実行した後に停止させ、その後の前記エンジンの回転数が閾値より高い状態が第1判定時間を越えて検出されるとガス欠復帰と判定する
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項1に記載したガス欠復帰判定方法において、
前記エンジンを制御するエンジンコントローラへ燃料噴射を要求した後の前記所定時間の経過後に、前記エンジンを自律運転させると共に前記エンジンの回転数が前記閾値以上である時間の計時を開始し、該計時した時間が前記第1判定時間を越えればガス欠復帰と判定する
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項1又は2に記載したガス欠復帰判定方法において、
前記エンジンの回転数が前記閾値以上である時間が前記第1判定時間を越えない場合に、前記エンジンの回転数が前記閾値未満である時間の計時を開始し、該計時した時間が第2判定時間を超えればガス欠判定を維持する
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項3に記載したガス欠復帰判定方法において、
前記第2判定時間は、前記第1判定時間よりも長い
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項1乃至4の何れか一項に記載したガス欠復帰判定方法において、
前記エンジンの回転数が前記閾値以上である時間の計時中に前記エンジンの回転数が前記閾値未満になった後、再び前記エンジンの回転数が前記閾値以上になった場合は、前記エンジンの回転数が前記閾値以上である時間の計時を開始し、該計時した時間が前記第1判定時間よりも長い第3判定時間を越えればガス欠復帰と判定する
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項1乃至5の何れか一項に記載したガス欠復帰判定方法において、
前記エンジンの回転数が閾値より高い状態である時間の計時中に前記エンジンの回転数が0になった後、再び前記発電機の回転数制御を所定時間の間実行した後に停止させ、エンジンコントローラへ回転数制御を要求すると共に前記エンジンの回転数が前記閾値以上である時間の計時を開始させ、前記エンジンの回転数が前記閾値以上である時間の計時中に前記エンジンの回転数が0になることを繰り返す場合は、該繰り返しの回数を計数し、該回数が所定回数になればガス欠判定を維持する
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項1乃至6の何れか一項に記載したガス欠復帰判定方法において、
前記回転数制御の目標回転数は、前記ガス欠復帰の判定を行わないで前記エンジンを始動する場合の前記発電機の回転数制御の目標回転数よりも高い
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - 請求項1乃至7の何れか一項に記載したガス欠復帰判定方法において、
エンジン水温が高い場合の前記第1判定時間は、エンジン水温が低い場合の前記第1判定時間に比べて短い
ことを特徴とするハイブリット車両のガス欠復帰判定方法。 - エンジンと、該エンジンによって駆動され車両駆動用の電力を生成する発電機を備えたハイブリッド車両の車両制御装置であって、
ガス欠を判定するガス欠判定回路と、
前記ガス欠判定回路がガス欠を判定した後に、前記発電機の回転数制御を所定時間の間実行した後に停止させ、その後の前記エンジンの回転数が閾値より高い状態が第1判定時間を越えて検出されるとガス欠復帰と判定するガス欠復帰判定回路と
を備えたことを特徴とするハイブリッド車両の車両制御装置。
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RU2020122826A RU2750308C1 (ru) | 2017-12-15 | 2017-12-15 | Способ определения восстановления из состояния отсутствия топлива для гибридного транспортного средства и устройство для его осуществления |
PCT/JP2017/045181 WO2019116561A1 (ja) | 2017-12-15 | 2017-12-15 | ハイブリット車両のガス欠復帰判定方法とその車両制御装置 |
KR1020207017383A KR102272621B1 (ko) | 2017-12-15 | 2017-12-15 | 하이브리드 차량의 연료 고갈 복귀 판정 방법과 그 차량 제어 장치 |
EP17934436.1A EP3725611B1 (en) | 2017-12-15 | 2017-12-15 | Gas deficiency recovery determination method for hybrid vehicle, and vehicle control device for same |
US16/770,814 US11161495B2 (en) | 2017-12-15 | 2017-12-15 | Fuel-empty-state recovery determination method for hybrid vehicle and vehicle control device for same |
JP2019558851A JP6915697B2 (ja) | 2017-12-15 | 2017-12-15 | ハイブリッド車両のガス欠復帰判定方法とその車両制御装置 |
BR112020011791-9A BR112020011791B1 (pt) | 2017-12-15 | Método de determinação de recuperação de estado vazio de combustível para veículo híbrido e dispositivo de controle de veículo para o mesmo | |
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