JPH10155202A - Hybrid electric car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform filter reproduction treatment without wasting the energy of a battery, by predicting a proper ignition conduction time and air supply time in advance, and operating a filter reproduction treatment means according to the predicted time. SOLUTION: The external temperature and the operation conditions (operation load, operation time, and lapse time after stopping operation) of a generator 2 are stored in a memory in a vehicle control device 17 constantly, and a proper conduction time is predicted each time based on, for example, the external temperature at that time and the operation conditions of the generator 2 immediately before performing the regeneration treatment of a filter 7. Then, a combustion heater 8 and an air pump 10 are energized according to the prediction time. Then, a battery 18 cannot be consumed more than needed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid electric vehicle equipped with a battery as a power source for a vehicle driving motor and an electric power generating device for charging the battery.
The present invention relates to a hybrid electric vehicle in which regeneration control of a diesel particulate filter mounted on an exhaust pipe of a motor is improved.

[0002]

2. Description of the Related Art Among electric vehicles, there is a so-called hybrid electric vehicle in which when an electric power supplied to a motor for driving a vehicle is exhausted, an electric power generator is activated to run while charging the battery. The power generating device is composed of an engine and a generator, but when a diesel engine is used as the motor, the diesel particulates are trapped in the exhaust pipe to collect the particulates contained in the exhaust gas. A filter device (hereinafter, abbreviated as “DPF device”) may be provided.

The DPF is provided with a filter for collecting the particulates, a combustion heater or a burner for burning the collected particulates, and an air pump for supplying air for the combustion. These are filter regeneration processing means for regenerating the filter. As more particulates are trapped, the filter becomes increasingly clogged and no longer functions. Therefore, when the clogging reaches a certain stage, a so-called filter regeneration process of burning particulates by a combustion heater or the like is performed.

FIG. 4 is a block diagram of a hybrid electric vehicle equipped with such a DPF device. FIG.
In the above, A is an engine generator, 1 is an engine controller, 2
Is an engine, 3 is an exhaust manifold, 4 is a generator control device, 5 is a generator, 6 is a DPF device, 7 is a filter, 8 is a combustion heater, 9 is an exhaust pipe, 10 is an air pump, 11,
12 is a switch means, 13 is a voltage converter, 14 is a key switch, 15 is an accelerator pedal sensor, 16 is a selector switch, 17 is a vehicle control device, 17-1 is a battery remaining capacity memory, 18 is a battery, and 19 is a vehicle drive. It is a motor.

The battery 18 is a high-voltage (for example, 300 V), large-capacity battery sufficient to drive the vehicle drive motor 19, and is connected to the vehicle control device 17. Battery 18 is also connected to voltage converter 13 to convert the voltage to the low voltage required by other electrical loads. The vehicle control device 17 includes a CPU and a memory (not shown), and is configured as a computer. The vehicle control device 17 includes:
In addition to the key switch 14, an accelerator pedal sensor 15 for generating a driving operation signal, a selector switch 16, and the like are connected, and the vehicle control device 17 controls the driving of the vehicle driving motor 19 based on signals from these. The battery remaining capacity memory 17-1 is a memory for recording the latest battery remaining capacity calculated based on the voltage and current supplied from the battery 18.

When the remaining battery capacity decreases to a predetermined value, the vehicle control device 17 issues a signal for activating the power generation device A. The power generation device A is a device mainly composed of the motor 2 and the power generator 5, and is a device for generating power by driving the power generator 5 by the power motor 2. The power generation output is
Connected to be supplied to When the battery 18 is charged and the remaining capacity rises to another predetermined value, a signal to stop the power generation device A is issued.

The motor control device 1 receives a signal from the vehicle control device 17 and performs start / stop control and rotation speed control of the motor 2. Normally, the battery 18 is charged by the generator 5
Is driven at a constant rotation, the motor 2 is controlled to a constant rotation. The generator control device 4 controls the generated voltage and generated current of the generator 5 while considering the voltage and current of the battery 18.

A DPF device 6 is provided in the exhaust pipe 9 connected to the exhaust manifold 3 of the motor 2. The DPF device 6 includes a filter 7 and a combustion heater 8. To perform combustion by the combustion heater 8 well, a sufficient amount of air is required. To supply the air, an air pump 10 is connected to the DPF device 6.

The energization of the combustion heater 8 and the air pump 10 is performed by a voltage converter 13 via switch means 11 and 12, respectively. The energization time for each is set in advance as a fixed value. The on / off of the switch means 11 and 12 is controlled by a control signal from the vehicle control device 17 when performing the filter regeneration processing. Therefore, the filter regeneration processing means is constituted by the combustion heater 8, the air pump 10, the switch means 11, 12, the voltage converter 13, and the like.

First, the combustion heater 8 is energized for the set ignition energizing time, during which the particulates collected by the filter 7 are ignited. After the ignition energization time has elapsed, the air pump 10 is energized for the set air pump energization time (ie, the air supply time). The combustion is continued by the air supplied from the air pump 10. In order to ensure the combustion, it is better to energize the combustion heater 8 until the end of the combustion. However, depending on the type of filter, there may be a case where the energization of the combustion heater 8 may be stopped once the fuel is ignited.

[0011]

[Problem to be Solved] In the above-mentioned conventional technology, the time for energizing the combustion heater 8 and the air pump 10 from the battery 18 is set to be longer for the worst case. There is a problem that the energy of the battery is consumed more than necessary, and the regeneration process takes more time than necessary.

(Explanation of Problems) Since the temperature of the particulate to be processed differs depending on the outside air temperature at that time, the elapsed time since the starter stopped, and the like, the power supply to the combustion heater 8 was started. The time from start to ignition varies. For this reason, the ignition energizing time is set to be longer, assuming that ignition is most difficult. Therefore,
In most cases, the ignition occurs before the set ignition energizing time elapses, so that during the period from ignition to the ignition energizing time elapse, the ignition is wastefully energized. .

Further, since the time until the burning of the particulates varies depending on the outside temperature at that time, the air supply time by the air pump 10 (that is, the air pump energizing time) is assumed to be the case where combustion is most difficult. It is set longer. Therefore, in most cases, the combustion is completed before the set air supply time elapses, so that the air pump 10 is unnecessarily energized from the end of combustion until the air supply time elapses. Will be. As described above, since the power is supplied to the combustion heater 8 and the apump 10 for a longer time than necessary, the energy of the battery is wastefully consumed, and the processing takes a longer time than necessary. An object of the present invention is to solve the above problems.

[0014]

In order to solve the above-mentioned problems, the present invention uses a battery as a power source for a vehicle drive motor and a diesel engine as an engine, and starts when the remaining capacity of the battery becomes low. And a diesel particulate filter device that is provided in the exhaust system of the motor and includes a filter for collecting particulates, and heats the particulates collected by the filter. Electric vehicle equipped with a combustion heater and a filter regeneration processing means including an air pump for supplying air for promoting combustion, for the ignition energizing time of particulates collected by the filter, and for supplying air until the end of combustion A regeneration processing time calculating means for predicting a time, and stopping the power generation device To, in association with the time calculated by the regeneration processing time calculation unit, it was that it comprises a control means for controlling the operation of the filter regeneration means.

In controlling the operation of the filter regeneration processing means by the control means, after the energization time to the combustion heater has passed the ignition energization time determined by the prediction, the operation of the air pump is controlled by the air supply time determined by the prediction. You can do it. Further, when predicting the ignition energizing time by the regeneration processing time calculating means, the operating load and the operating time of the motor immediately before performing the filter regeneration processing are measured, and the larger the operating load, the more the operating time The longer the time, the shorter the ignition energization time, or the outside air temperature measured immediately before performing the filter regeneration process.If the outside air temperature is high, shorten the ignition energization time or stop the engine. Is measured, and when the elapsed time is short, the ignition energizing time can be shortened. On the other hand, when predicting the air supply time by the regeneration processing time calculation means, the outside air temperature immediately before performing the filter regeneration processing is measured, and when the outside air temperature is high, the air supply time can be shortened.

(Summary of operation to be solved) With respect to a diesel particulate filter device provided in an exhaust pipe of an engine, when the filter is clogged, the particulate matter is ignited by a combustion heater and air is supplied from an air pump. A filter regeneration process of burning is performed.

According to the present invention, when performing the filter regeneration process, an appropriate ignition energizing time and an air supply time are predicted in advance in consideration of the outside air temperature and the like at that time. Power is supplied to the air pump for the estimated air supply time. Thus, particulate ignition and combustion can be performed without wasting energy of the battery.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a hybrid electric vehicle according to the present invention. Reference numerals correspond to those in FIG. 4, 17-2 denotes an engine operation load memory,
17-3 is an engine operation time timer, 17-4 is an engine stop time timer, 17-5 is an ignition energization time memory, 17-
6 is an air supply time memory, 17-7 is a regeneration timer, 17
Reference numeral -8 denotes a regeneration processing permission wait flag memory, reference numeral 20 denotes an outside air temperature sensor, and reference numeral 21 denotes a reproduction processing permission switch.

Since the components having the same reference numerals as those in FIG. 4 are the same, their description will be omitted. The newly provided one is an outside air temperature sensor 20, a regeneration processing permission switch 2
1 and various timers and memories 17-2 to 17-8 in the vehicle control device 17. The outside air temperature sensor 20 is a sensor that detects the temperature of the outside air.
Reference numeral 1 denotes a manual switch used to start the reproduction process of the DPF device 6 even if conditions for starting the reproduction process are satisfied, and to wait until the driver gives an instruction.

The timers and memories newly provided in the vehicle control device 17 are as follows. Engine operating load memory 17-2 = a memory for storing the immediately preceding operating load (% of load) when the engine 2 is operating. (If the operating load is recorded, it is possible to know how much output the motor 2 has produced. If the output is large, the temperature of the particulates will be high.) The motor operation time timer 17-3 = the motor 2 A timer that measures the time from when an operation starts until it stops. (The longer the operating time, the higher the temperature of the particulates.) Engine stop time timer 17-4 = a timer that measures the time from when the engine 2 stops until the regeneration process of the filter 7 starts. (If the time after stopping is long, the particulate cools down and its temperature decreases.) Ignition energization time memory 17-5 = time to energize the combustion heater 8 for igniting the particulate A memory that stores the obtained time. Air supply time memory 17-6 = memory for storing the time obtained as the time to supply air for the combustion after the ignition of the particulate (that is, the air pump energization time). Regeneration timer 17-7 = Timer for controlling the regeneration process of the filter 7. This timer is started when the reproduction process starts, and is stopped when it ends. Reproduction processing permission wait flag memory 17-8 = memory for storing a flag indicating that reproduction processing start is to be waited until there is permission. The instruction to wait or not to wait is given by the driver operating the reproduction processing permission switch 21.

According to the present invention, an appropriate ignition energizing time and air supply time are predicted based on the outside air temperature immediately before the start of the filter regeneration processing and the operating state of the motor 2, and thereby the combustion heater 8 and the air pump 10 Is controlled.

Next, the control operation will be described. FIG.
5 is a flowchart illustrating control of the hybrid electric vehicle according to the present invention. In this embodiment, the combustion heater 8 is energized until the end of the particulate combustion. When the key switch 14 is turned on, this flowchart is started, and the processing after step 2 is repeatedly performed in a short cycle.

Step 1: In response to the ON signal of the key switch 14, the values of the timer and the memory related to the control of the DPF device 6 and the state of the signal are set to the initial state. That is, the values of the timers and the memories in the vehicle control device 17 are reset. Also, the power generator A is stopped (signals to the motor controller 1 and the generator controller 4 are turned off), and the power supply to the combustion heater 8 and the air pump 10 is stopped (control to the switch means 11 and 12). Signal is off). In most cases, the operation is already stopped or turned off, but this state is surely performed in step 1.

Step 2: It is checked whether or not the regeneration timer 17-7 is operating. Immediately after the key switch 14 is turned on, the operation proceeds to step 3 because the key switch 14 has not been operated.
However, when it comes to step 2 after going around this flowchart several times, not just immediately, it may be activated,
At that time, the process proceeds to step 21. Step 21 to 2
Processes up to 6 are processes from during the reproduction process to the end of the reproduction process.

Step 3: If the reproduction process is not being performed,
If the flag of the reproduction processing permission wait flag memory 17-8 is O
Check if it is N. If it is ON,
Since it is in the permission waiting state, the process proceeds to step 14 to check whether permission has been issued (to check the switching state of the reproduction processing permission switch 21). Step 4: If the reproduction processing permission waiting flag is OFF,
Since it is not in the standby state, various checks are performed to determine whether or not to perform the regeneration process. First, it is checked whether or not the power generation device A is operating. When the flow of the flowchart was last performed, the battery 18 is not operated if the remaining capacity is large, but should be operated if the remaining capacity is low.

Step 5: Battery remaining capacity memory 17
Remaining battery capacity recorded in the -1, checks whether the charging start required value P ₂ or more. The charge start required value P ₂ is
This is a battery remaining capacity value reduced to such an extent that charging needs to be started, and is set in advance in consideration of the characteristics of the battery 18.

[0027] If less than Step 6 ... start charging required value P _2, to start charging to start the engine generator apparatus A. That is, a signal is sent to the motor control device 1 and the generator control device 4 to operate the motor generator A. The power generation of the generator 5 is started, and the battery 18 is charged. At the same time, various processes to be performed in association with the start of power generation are performed. That is, the engine operation time timer 17-3 is cleared and started, and the engine stop time timer 17-4 is stopped.

Step 7: This step represents a control routine for the vehicle drive motor 19. The control of the vehicle drive motor 19 is performed by controlling the power supply to the vehicle drive motor 19 based on a driving operation signal from the accelerator pedal sensor 15 or the like at the time when the flow comes to this step. This control is known. Step 8: The remaining battery capacity is obtained from the amount of discharge from the battery 18 and the amount of charge from the power generating device A, and the value is recorded in the remaining battery capacity memory 17-3. This is also performed every time the flow chart is executed. After this, the process returns to step 2 and the flow is repeated. A method for calculating the remaining capacity of the battery is known.

Step 9: If the power is being generated in Step 4, the operation load of the motor 2 is stored in the motor operation load memory 17-.
Stored in 2. The size of the operating load is used when determining the ignition energization time T _H in step 17 (FIG. 3 will be described later (a) refer). Step 10: Next, the remaining capacity of the battery is being charged, checks whether it is greater than the charge completion value P _1. The charge completion value P ₁ is a battery remaining capacity value that has risen to an extent that it is considered that the battery has been sufficiently charged, and is set in advance in consideration of the characteristics of the battery 18. If a larger than the charging completion value P _1, in order to stop the engine generator apparatus A, the process proceeds to step 12. If the charge completion value P ₁ or less, from the viewpoint of the battery residual capacity is not floor is still not stop the engine generator apparatus A, it must be stopped if it regeneration process requires. So, to investigate it,
Proceed to step 11.

[0030] The case where the remaining capacity of the step 11 ... battery was fully charged value P ₁ or less, it is checked whether or not reproduction of the filter 7 is required. This check is performed by a known method. Known methods include, for example, checking whether the pressure difference between the inlet side and the outlet side of the operating DPF device 6 is equal to or greater than a predetermined value, and whether the integrated operation time value of the motor 2 is equal to or greater than a predetermined time. There is a way to do that.

[0031] Toka if the battery residual capacity value in step 12 ... Step 10 is found to be larger than the charging completion value P _1, if the filter regeneration process is determined to be necessary in step 11, stops the power generation . Then, the following processing to be performed in addition thereto is performed. First, the engine operation time timer 17-3 is stopped. At the same time, a stop control signal is sent from the vehicle control device 17 to the motor control device 1 and the generator control device 4 to stop the power generation device A. Then, the engine stop time timer 17-4 is cleared and started.

Step 13... If the battery remaining capacity value is larger than the charge completion value P _{1 in} step 10, it is not yet checked whether or not the regeneration processing of the filter 7 is necessary. Check here. If this is not checked at this stage, the process may proceed to steps 19 and 20 without performing the reproduction process, and the reproduction process may be performed.

Step 14: The reproduction process of the filter 7 is
Find out if you can start immediately. This is checked by reading the switching state of the reproduction processing permission switch 21 operated by the driver. If the reproduction processing permission switch 21 is turned on, it means "wait", and if it is turned off, it means "start immediately". May be started ".)

The reason for providing such a step is as follows.
It is as follows. When the reproduction process of the filter 7 starts,
Since the combustion heater 8 and the air pump 10 are operated, large electric power is consumed from the battery 18. The driver may prefer to use the remaining capacity of the battery 18 for running the vehicle preferentially so as not to consume as much as possible. In such a case, the regeneration process is automatically started. Then, the remaining battery capacity is quickly consumed. Therefore, the start of the reproduction processing of the filter 7 can be made to wait until the driver permits, at the will of the driver.

Step 15: Reproduction processing permission switch 21
If the switching state is waiting for permission,
Turn on the flag of the reproduction processing permission wait flag memory 17-8
To Step 16: If the switching state of the reproduction processing permission switch 21 can be started immediately, the flag is turned off. Step 17: The motor stop time timer 17-4 is stopped. This is because the reproduction process is to be started.

Step 18: Ignition energizing time T _H to energize the combustion heater 8 to ignite the particulates
And an air supply time T _A for supplying air required to burn out the particulates after ignition. Since it has been found that appropriate values of these times vary depending on the operating conditions of the motor 2, the outside air temperature, the time since the stop of the motor 2, and the like, the present invention obtains these values based on these values. The inventor of the present application has determined by the following equation as a result of repeated experiments and the like. Ignition energizing time T _H = F ₁ + F ₂ + F ₃ Air supply time T _A = F ₄ where F ₁ is a function value of the operating load of the motor and the operating time,
F ₂ is the function value of the outside air temperature, F ₃ is the function value of the movers downtime, F ₄ is a function value of the outside temperature. These values are determined in advance by setting a map in the vehicle control device 17.

FIG. 3 is a map for obtaining the ignition energizing time T _H and the air supply time T _A in the present invention.
FIG. 3A is a map for obtaining F ₁ , and L ₁ , L ₂ ,
L ₃ is a operating load movers as a parameter (L
_{1 <L 2 <L 3)} . FIG. 3B is a map for obtaining F ₂ ,
FIG. 3C is a map for obtaining F ₃ , and FIG. 3D is a map for obtaining F ₄ .

If the engine 2 has been operated for a long time with a large operating load immediately before performing the regeneration process, the particulates are more likely to be ignited. Therefore, the ignition energization time of the combustion heater 8 may be shorter. The curve of the map in FIG. 7A reflects this fact. Further, as the elapsed time from when the motor 2 is stopped is shorter, the particulates are more likely to ignite, but FIG. 3 (c) reflects this. When the outside air temperature is low, it is required that both the ignition energizing time T _H and the air supply time T _A be long.
(B) and (d) reflect that.

Step 19: The filter regeneration processing is started. First, the reproduction timer 17-7 is cleared and started. Step 20: The combustion heater 8 is energized. This is performed by issuing a signal to turn on the switch means 12 from the vehicle control device 17. By energizing the combustion heater 8, the collected particulates are heated and ignited soon.

Step 21: Reproduction timer 1 in step 2
7-7 may in operation (if after step 19 in the previous previous flow, has become in operation), it is checked whether the time of reproduction timer 17-7 exceeds the ignition energization time T _H. The ignition by the heating by the combustion heater 8 is performed.
If only _H continues, the particulate should be ignited. This is because the ignition energizing time T _H is a time set with reference to the fact that if current is energized for this much time, ignition of the particulates will be performed reliably. In step 2, the reproduction timer 17
As long as -7 is in operation, control is performed so as not to go to step 6 for starting the generator A, so that the filter regeneration process is performed without interruption.

Step 22: If the ignition energizing time _TH has elapsed, the ignition should have occurred, and the air pump 10 is operated to supply air. This is the vehicle control device 17
Is performed by issuing a signal for turning on the switch means 11. The reason for supplying air after ignition is
This is because if supplied before the ignition, the combustion heater 8 will be cooled and the ignition will be hindered.

The time step 23 ... playback timer 17-7 checks whether exceeds the total time of the ignition energization time T _H and the air supply time T _A. By this time, the particulates should have burned out. Time step 24 ... playback timer 17-7, after the lapse of the total time of the ignition energization time T _H and the air supply time T _A, turns off the power supply to the combustion heater 8. In this example,
The case where the energization of the combustion heater 8 is performed until the end of combustion is taken as an example. Step 25: Next, the operation of the air pump 10 is stopped. This is because it is no longer necessary to supply combustion promoting air. Step 26: The reproduction timer 17-7 is stopped.

In the above example, the power supply to the combustion heater 8 is performed until the particulate combustion is completed (see step 23 in the flowchart of FIG. 2). However, depending on the type of the filter 7 used in the DPF device 6, once the particulates are ignited, combustion may be continued by merely supplying air. In such a case, it can also be adapted to power only the ignition energization time T _H. The flowchart in that case is a flowchart in which step 24 is moved immediately after step 22 in FIG.

[0044]

As described above, the hybrid electric vehicle of the present invention has the following effects. (Effect of Claim 1) Appropriate ignition energizing time and air supply time are predicted in advance, and the filter regeneration processing means is operated according to the predicted time, so that the filter regeneration processing is not wastefully consumed without wasting battery energy. You can do. (Effect of Claim 2) Since the current is supplied from the battery to the combustion heater for the estimated ignition energizing time, and thereafter, the air pump is energized for the estimated air supply time, the filter regeneration process is performed without wasting the battery energy. Can be done.

(Effect of Claim 3) As the operation load of the motor immediately before the filter regeneration processing is larger and the operation time is longer, the particulates are more likely to ignite, so that more appropriate The ignition energizing time can be determined. (Effect of Claim 4) If the outside air temperature immediately before the filter regeneration processing is high, the particulates are easily ignited, so that a more appropriate ignition energization time can be obtained.

(Effect of Claim 5) The shorter the elapsed time from the stoppage of the motor, the easier the particulates are to ignite, so that a more appropriate ignition energizing time can be obtained. (Effect of Claim 6) If the outside air temperature immediately before the filter regeneration processing is high, the particulates are liable to burn, so that a more appropriate air supply time can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a hybrid electric vehicle according to the present invention.

FIG. 2 is a flowchart illustrating control of the hybrid electric vehicle according to the present invention.

FIG. 3 is a map for obtaining an ignition energizing time and an air supply time according to the present invention.

FIG. 4 is a block diagram showing a hybrid electric vehicle based on the present invention.

[Explanation of symbols]

A: power generator, 1: motor controller, 2: motor,
DESCRIPTION OF SYMBOLS 3 ... Exhaust manifold, 4 ... Generator control device, 5 ... Generator, 6 ... DPF device, 7 ... Filter, 8 ... Combustion heater, 9 ... Exhaust pipe, 10 ... Air pump, 11, 12 ... Switch means, 13 ... Voltage converter, 14 key switch, 15 accelerator pedal sensor, 16 selector switch, 17 vehicle control device, 17-1 battery remaining capacity memory, 17-2 motor operating load memory, 17-3
... Motor operating time memory, 17-4 ... Motor stop time timer, 17-5 ... Ignition energizing time memory, 17-6 ... Air supply time memory, 17-7 ... Regeneration timer, 17-8 ... Regeneration processing permission wait Flag memory, 18 ... battery, 19 ...
Vehicle drive motor, 20: outside air temperature sensor, 21: regeneration processing permission switch

Claims (6)

[Claims] 1. An electric power generating apparatus which uses a battery as a power source of a vehicle driving motor, uses a diesel engine as an engine, and starts and charges when the remaining capacity of the battery becomes low, and exhaust of the engine. A diesel particulate filter device provided in the middle of the system and including a filter for collecting particulates, a combustion heater for heating the particulates collected by the filter, and an air pump for supplying air for combustion promotion. A hybrid electric vehicle including a filter regeneration processing means including a regeneration processing time calculation means for predicting an ignition energizing time of the particulate matter collected by the filter and an air supply time until the end of combustion; While the power generator is stopped, the time corresponding to the time determined by the regeneration And control means for controlling the operation of the filter regeneration processing means. 2. The hybrid electric machine according to claim 1, wherein the operation of the air pump is performed for the estimated air supply time after the ignition energization time calculated by the prediction elapses. Car. 3. An operation load and an operation time of an engine immediately before performing a filter regeneration process when predicting an ignition energization time by a regeneration process time calculating means,
The hybrid electric vehicle according to claim 1, wherein the ignition energization time is shortened as the operation load is increased or as the operation time is increased. 4. A method according to claim 1, wherein when the ignition energization time is predicted by the regeneration processing time calculating means, the external air temperature immediately before performing the filter regeneration processing is measured, and when the external air temperature is high, the ignition energization time is shortened. The hybrid electric vehicle according to claim 1. 5. When predicting the ignition energizing time by the regeneration processing time calculating means, measure the elapsed time after stopping the engine, and if the elapsed time is short, shorten the ignition energizing time. The hybrid electric vehicle according to claim 1, wherein: 6. The method according to claim 1, wherein when the air supply time is predicted by the regeneration processing time calculating means, the outside air temperature is measured immediately before the filter regeneration processing is performed, and when the outside air temperature is high, the air supply time is shortened. The hybrid electric vehicle according to claim 1.