JP2003191775A - Driving control device of hybrid vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving control device of a hybrid vehicle which properly maintains a residual capacity of a battery and suppressing noise of an internal combustion engine and a problem of fuel consumption thereof. <P>SOLUTION: In this driving control device of the hybrid vehicle 1 provided with both an electric motor 2 and an internal combustion engine 3 as a driving source, at least a clutch means 15 which can interrupt a torque transfer from drive wheels 4 to the internal combustion engine 3 is installed. In a first travel state wherein a target vehicle speed by a setting means is larger than a detecting vehicle speed by a detecting means 29 and the speed difference between the target vehicle speed and the detecting vehicle speed is less than a prescribed value, the internal combustion engine 3 is stopped, the torque transfer is interrupted by the clutch means 15 and the drive wheels 4 is driven by only the electric motor 2. In a second travel state wherein the speed difference is equal to or more than the prescribed value, the drive wheels 4 are driven by both the electric motor 2 and the internal combustion engine 3. A generator 17 which charges a battery 20 being a power supply of the electric motor 2 is driven by the internal combustion engine 3. A means 21 for detecting the residual capacity of the battery 20 is installed. When the detecting value 21 of the residual capacity of the battery is less than a prescribed value, the internal combustion engine 3 is driven even in a first travel state. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for a hybrid vehicle in which drive wheels are driven by both an electric motor and an internal combustion engine.

[0002]

2. Description of the Related Art A hybrid vehicle in which the rear wheels are driven through a mission by the driving force of a drive motor which is rotated by electric power from a battery and the battery is charged by a generator driven by an internal combustion engine is known. It has been proposed (see, for example, JP 2001-190004 A).

By the way, in the above-mentioned conventional hybrid vehicle, the rear wheels are driven only by the driving force of the electric motor. Therefore, even when a large external load is applied, for example, when traveling on an uphill road, a predetermined amount is applied. There is a problem that a large-sized and large-output electric motor is required to ensure the vehicle speed.

In order to avoid such a problem, it is possible to drive the drive wheels by both the electric motor and the internal combustion engine. In this case, it is possible to drive the rear wheels only by the electric motor or both the electric motor and the internal combustion engine based on the speed difference between the target vehicle speed and the detected vehicle speed.

[0005]

Both the electric motor and the internal combustion engine are provided, and the drive wheels are driven by the driving force of both the electric motor and the internal combustion engine or only the electric motor based on the speed difference between the target vehicle speed and the detected vehicle speed. When driven, there are cases in which the remaining capacity of the battery, which is the power source of the electric motor, cannot be properly maintained, or the noise and fuel consumption of the internal combustion engine deteriorate.

The present invention has been made in view of the above conventional circumstances, and provides an operation control device for a hybrid vehicle capable of appropriately maintaining the remaining capacity of the battery and suppressing the noise and fuel consumption problems of the internal combustion engine. That is the issue.

[0007]

According to a first aspect of the present invention, in a drive control device for a hybrid vehicle having both an electric motor and an internal combustion engine as a drive source, at least torque transmission from the drive wheels to the internal combustion engine side is shut off. In the first traveling state in which the target vehicle speed by the setting means is higher than the vehicle speed detected by the detection means and the speed difference is less than a predetermined value, the internal combustion engine is stopped and the torque transmission is performed by the clutch means. In the second traveling state in which the drive wheel is driven only by the electric motor by shutting off by means of means, and the speed difference is the predetermined value or more, the drive wheel is driven by both the electric motor and the internal combustion engine. The internal combustion engine can drive a generator that charges a battery that is a power source of If it is less than value is characterized in that even in the first driving state to drive the internal combustion engine.

According to a second aspect of the present invention, in a drive control device for a hybrid vehicle having both an electric motor and an internal combustion engine as a drive source, at least clutch means capable of interrupting torque transmission from the drive wheels to the internal combustion engine side is provided. In a first traveling state in which the target vehicle speed set by the setting means is higher than the vehicle speed detected by the detection means and the speed difference is less than a predetermined value, the internal combustion engine is stopped and the torque transmission is cut off by the clutch means. In the second traveling state in which the drive wheels are driven only by the electric motor and the speed difference is the predetermined value or more, the drive wheels are driven by both the electric motor and the internal combustion engine, and the battery that is the power source of the electric motor is driven. A generator to be charged can be driven by the internal combustion engine, and a first switch is provided between the generator and the battery so that the remaining capacity of the battery is maintained. Detecting means is provided, and in the second traveling state, when the battery remaining capacity detection value is less than a predetermined value, the first switch is turned on, and when the remaining battery capacity detection value is not less than the predetermined value, the first switch is turned off. Is characterized by.

According to a third aspect of the present invention, in a hybrid vehicle operation control apparatus having both an electric motor and an internal combustion engine as a drive source, at least clutch means capable of interrupting torque transmission from the drive wheels to the internal combustion engine side is provided. In a first traveling state in which the target vehicle speed set by the setting means is higher than the vehicle speed detected by the detection means and the speed difference is less than a predetermined value, the internal combustion engine is stopped and the torque transmission is cut off by the clutch means. In the second traveling state in which the drive wheels are driven only by the electric motor and the speed difference is the predetermined value or more, the drive wheels are driven by both the electric motor and the internal combustion engine, and the battery that is the power source of the electric motor is driven. A generator to be charged can be driven by the internal combustion engine, and a first switch is provided between the generator and the battery so that the remaining capacity of the battery is maintained. In the first traveling state, when the battery remaining capacity detection value is less than a predetermined value, the internal combustion engine is operated, the clutch means cuts off the torque transmission, and turns on the first switch. In the second traveling state, the first switch is turned on when the remaining battery capacity detection value is less than a predetermined value, and the first switch is turned off when the remaining battery capacity detection value is not less than the predetermined value. .

According to a fourth aspect of the present invention, in any one of the first to third aspects, the electric motor is a power generation motor having a power generation function, and a second switch is provided between the power generation motor and the battery for detection. In the third traveling state in which the vehicle speed is higher than the target vehicle speed, when the battery remaining capacity is equal to or more than a predetermined value, the first and second switches are turned off, the throttle opening of the internal combustion engine is minimized, and the torque transmission is performed by the clutch. When the remaining battery capacity is less than the predetermined value, the second switch is turned on, and the torque transmission is cut off by the clutch.

[0011]

According to the present invention, the drive wheels are driven by both the electric motor and the internal combustion engine in the second traveling state in which the target vehicle speed is higher than the detected vehicle speed and the speed difference is a predetermined value or more. Therefore, it is not necessary to make the electric motor large and have a large output.

Further, in the first traveling state in which the speed difference is less than the predetermined value, the drive wheels are driven only by the electric motor, so that noise and fuel consumption deterioration due to the internal combustion engine can be suppressed. Further, in this case, since the torque transmission from the drive wheels to the internal combustion engine is cut off by the clutch means, the internal combustion engine does not become a running resistance.

Further, according to the invention of claim 1, when the battery remaining capacity detection value is less than a predetermined value, the internal combustion engine is operated even in the first traveling state, so that the remaining capacity of the battery is properly adjusted. It can be maintained in a stable state and the problem that the battery is overdischarged can be avoided.

Further, in the second aspect of the invention, the first switch is provided between the generator and the battery, and in the second traveling state in which both the electric motor and the internal combustion engine are driven, the battery remaining capacity detection value is the above-mentioned value. Since the first switch is turned on when it is less than the predetermined value and the first switch is turned off when it is more than the predetermined value, the battery is charged by remaining the battery when the state of charge of the battery is not sufficient. If the capacity can be maintained properly and the battery is sufficiently charged, the generator will be substantially idle.
It is possible to avoid wasteful use of the driving force of the internal combustion engine for driving the generator, and suppress deterioration of fuel efficiency of the internal combustion engine.

Further, according to the third aspect of the invention, when the battery remaining capacity detection value is less than the predetermined value, the internal combustion engine is operated even in the first traveling state.
The remaining capacity of the battery can be maintained in an appropriate state, the problem of over-discharging the battery can be avoided, and in the second traveling state, the first switch is turned on when the battery remaining capacity detection value is less than the predetermined value. Since the first switch is turned off when the value is equal to or more than the predetermined value, the battery can be charged to maintain the remaining battery capacity properly and the battery can be sufficiently charged when the state of charge of the battery is not sufficient. In that case, the generator is made to idle, and it is possible to avoid wasteful use of the driving force of the internal combustion engine to drive the generator, and it is possible to suppress deterioration of fuel efficiency of the internal combustion engine.

According to the fourth aspect of the present invention, in the third traveling state in which the detected vehicle speed is higher than the target vehicle speed, the first and second switches are turned on when the battery remaining capacity is less than the predetermined value, and the torque is applied by the clutch. Since the transmission is cut off, the regenerative braking action of the generator motor can be obtained and the battery can be charged. On the other hand, when the state of charge of the battery is equal to or greater than the predetermined value, the first switch is turned off, the throttle opening of the internal combustion engine is minimized, and the torque can be transmitted by the clutch, so that the battery is prevented from being overcharged. The braking effect by the internal combustion engine can be obtained while avoiding it.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 and FIG. 2 are views for explaining an operation control device for a hybrid vehicle, specifically, a golf cart according to a first embodiment of the present invention as claimed in claims 1-3.
Is a block configuration diagram thereof, and FIG. 2 is a flowchart for explaining the operation.

In FIG. 1, reference numeral 1 denotes a golf cart. The golf cart 1 drives an electric motor 2 and an internal combustion engine 3 to drive a pair of left and right rear wheels (driving wheels) 4, 4. A pair of left and right front wheels 5 and 5 are provided as a source.
Is configured to travel while being steered by the steering wheel 6.

The golf cart 1 has a manual traveling mode in which an occupant travels by manipulating the steering wheel 6, the accelerator pedal 7 and the brake pedal 8 artificially,
It is configured such that any of the automatic traveling modes in which the vehicle automatically travels along the guide line embedded in the road surface while detecting the guide line is selectable. The manual drive mode and the automatic drive mode are switched by operating the main switch 10 and the mode switch 11 of the operation panel 9.

The electric motor 2 is a transmission 1
The two input shafts are arranged so as to be rotationally driven, whereby the driving force of the electric motor 12 is transmitted.
A motor driving force transmission system for transmitting the left and right rear wheels 4 and 4 via 2 is configured.

Electric power from the battery 20 is supplied to the electric motor 2 through the motor driver 24. By controlling the motor driver 24 with the controller 22, a drive power supply system for controlling the drive force from the electric motor 2, specifically, the magnitude of the output torque is configured.

The transmission 12 is provided with a vehicle speed sensor (vehicle speed detecting means) 29 for detecting the rotational speed of the output shaft of the transmission 12 and the traveling speed of the golf cart 1.

The carburetor 25 of the internal combustion engine 3 has a throttle motor 2 for controlling the opening / closing of the throttle valve 25a.
6 is connected, and electric power from the battery 20 is supplied to the throttle motor 26 via a motor driver 27. By controlling the motor driver 27 with the controller 22, the throttle valve opening and thus the driving force from the internal combustion engine 3, for example, the magnitude of the output torque is controlled. The opening of the throttle valve 25a is detected by the throttle sensor 28, and the detected throttle opening signal is sent to the controller 22.

The driving force from the internal combustion engine 3 is transmitted to the rear wheels 4 and 4 through the transmission mechanism constituting the internal combustion engine driving force transmission system a and the transmission 12. A V-belt type continuously variable transmission 14 is adopted as the transmission mechanism. The transmission mechanism may be a chain type in which a chain is wound around a driving side or a driven side sprocket, a belt type in which a toothed belt is wound around a driving side or a driven side toothed pulley, or a drive shaft type. Can also be adopted.

An electromagnetic clutch 15 which is on / off controlled by the controller 22 is interposed in the middle of the internal combustion engine drive power transmission system a. The clutch 15 is turned off in the driving range in which the rear wheel 4 is driven only by the electric motor 2, so that power transmission between the rear wheel 4 and the internal combustion engine 3 is blocked.

As the clutch 15, in addition to the electromagnetic type, a one-way clutch that allows only the power transmission from the internal combustion engine 3 to the rear wheel 4 side and disables the power transmission in the opposite direction is adopted. Is also possible.

A drive force detection sensor for detecting the drive force transmitted from the internal combustion engine 3, more specifically, a torque sensor 16 for detecting the transmission torque is interposed upstream of the clutch 15 in the direction in which the drive force is reached.

A generator 17 is connected to the crankshaft of the internal combustion engine 3, and the current value from the generator 17,
The voltage value is sent to the controller 22. The rotation speed of the crankshaft of the internal combustion engine 3, that is, the rotation speed of the generator 17 is detected by the rotation speed sensor 23, and the detection signal is sent to the controller 22.

The output of the generator 17 is supplied to a battery 20 which is a power source of the electric motor 2 via a changeover switch (first switch) 18 and an inverter / converter 19 which constitute a charging power supply system. The battery 20
, Its voltage, charging / discharging current amount (battery remaining capacity),
A battery state detection unit 21 that detects a battery state such as temperature and temperature is connected. The battery remaining capacity and the like detected by the battery state detection block 21 are sent to the controller 22.

Next, the control operation and action and effect of the controller 22 will be described. When the target vehicle speed V0 is set by the setting means (not shown) in the automatic traveling mode, the target vehicle speed V0 and the detected vehicle speed V1 detected by the vehicle speed sensor 29 are shown in the flowchart of FIG.
The speed difference between and is compared with a preset reference value B (step S1). In this case, when the target vehicle speed V0 is higher than the detected vehicle speed V1 and the speed difference (V0-V1) is less than the reference value B, and therefore it is determined that the vehicle is in the first traveling state, the operation of the internal combustion engine 3 is performed. Is stopped and torque transmission between the rear wheel 4 and the internal combustion engine 3 is cut off by the clutch 15, and the rear wheel 4 is driven only by the electric motor 2 (step S2).

Then, the battery state of charge Q detected by the battery state detecting section 21 is compared with a preset reference value A (step S3). In this case, when it is determined that the battery remaining capacity Q is equal to or greater than the reference value A, that is, the battery 20 is in a sufficiently charged state, the internal combustion engine 3 is held in the operation stopped state and the clutch 15 is used. Is held in the torque transmission cutoff state (step S4).

On the other hand, when it is determined that the battery remaining capacity Q is less than the reference value A, that is, the battery 20 is not in a sufficiently charged state, the internal combustion engine 3 is started and the clutch 15 is torqued. The transmission is maintained in the cutoff state, and the first switch 18 between the battery 20 and the generator 17 is turned on (step S5). As a result, the generator 17 is rotationally driven by the internal combustion engine 3, and the battery 20 is charged by the electric power from the generator 17.

In step S1, the target vehicle speed V0 is higher than the detected vehicle speed V1 and the speed difference (V
0-V1) is equal to or greater than the predetermined reference value B, and thus is determined to be in the second traveling state, the operation of the internal combustion engine 3 is started and the clutch 15 is engaged to disconnect the internal combustion engine 3 from the internal combustion engine 3. The torque can be transmitted to the rear wheel 4, and the rear wheel 4 is driven by both the electric motor 2 and the internal combustion engine 3 (step S6).

Then, the battery remaining capacity Q detected by the battery state detecting section 21 is compared with a predetermined reference value A (step S7). In this case, when it is determined that the battery residual capacity Q is the reference value A or more, that is, the battery 20 is in a sufficiently charged state, the first switch 18 is turned off (step S8), and the internal combustion engine 3 The electric power from the generator 17 driven by is shut off by the first switch 18, so that the generator 17 is substantially idle and eventually the driving force of the internal combustion engine 3 is substantially entirely supplied to the rear wheel 4. To be done.

On the other hand, when it is determined that the battery remaining capacity Q is less than the reference value A, that is, the battery 20 is not in a sufficiently charged state, the first switch 18 is turned on (step S9). As a result, the electric power from the generator 17 rotationally driven by the internal combustion engine 3 is supplied to the battery 20.
And the battery 20 is charged.

When the internal combustion engine 3 is started, the crankshaft of the internal combustion engine 3 is cranked by a starter motor (not shown) and the ignition system and the fuel supply system are activated. When the crankshaft rotation speed detected by the rotation speed sensor 23 exceeds the start determination rotation speed set higher than the cranking rotation speed, it is determined that the internal combustion engine 3 has started, and the throttle valve 2 of the carburetor 25 is
The throttle motor 26 controls opening / closing so that the opening of 5a corresponds to the target vehicle speed V0.

Thus, in this embodiment, the target vehicle speed V0
Since the rear wheel 4 is driven by both the electric motor 2 and the internal combustion engine 3 when the detected vehicle speed V1 is smaller and the speed difference becomes a predetermined value or more, it is necessary to make the electric motor 2 large and large in output. Absent. Further, when the speed difference is less than the predetermined value, the electric motor 2 alone is used for driving, so that noise due to the internal combustion engine 3 and deterioration of fuel consumption of the internal combustion engine 3 can be suppressed.

The battery remaining capacity detection value Q is a predetermined value A.
When it is less than the above, the internal combustion engine 3 is operated even in the first traveling state, so that the remaining capacity of the battery 20 can be maintained in an appropriate state, and the problem that the battery 20 is over-discharged can be avoided. .

Further, in the second running state in which the internal combustion engine 3 is operated, the first switch 18 is turned on when the battery remaining capacity detection value Q is less than the predetermined value A, and when the battery remaining capacity detection value Q is not less than the predetermined value A. Since the first switch 18 is turned off, when the charge state of the battery 20 is not sufficient, the battery 20 can be charged to appropriately maintain the battery remaining capacity, and when the battery 20 is sufficiently charged. Causes the generator 17 to substantially idle, and it is possible to avoid using the driving force of the internal combustion engine 3 for useless driving of the generator 17, and to suppress deterioration of fuel consumption of the internal combustion engine 3.

Next, a second embodiment according to the invention of claim 4 will be described. In the second embodiment, as shown in FIG. 3, a generator motor 2'having a generator function is adopted as an electric motor for driving the rear wheels 4. Also, this generator motor 2 '
The battery 20 and the battery 20 are connected by a charging line 30, and a second switch 31 is interposed in the charging line 30. The rest of the configuration is similar to that of the first embodiment.

In the second embodiment, the detected vehicle speed V1
Is greater than the target vehicle speed V0, and when the battery remaining capacity Q is equal to or greater than the predetermined value A, the first and second switches 18 and 31 are turned off, and the throttle opening degree of the internal combustion engine 3 is minimum opened. The clutch 15 enables the torque transmission.

On the other hand, when the battery remaining capacity Q is less than the predetermined value A, the second switch 31 is turned on,
The torque transmission is cut off by the clutch 15.

In the second embodiment, in the third traveling state in which the detected vehicle speed V1 is higher than the target vehicle speed V0, when the battery remaining capacity Q is less than the predetermined value A, the first and second switches 18, 31 are turned on. Since the clutch 15 cuts off the torque transmission, the regenerative braking action of the generator motor 2'can be obtained, and
The battery 20 can be charged.

On the other hand, when the battery remaining capacity Q is equal to or greater than the predetermined value A, the first switch 18 is turned off, the throttle opening of the internal combustion engine 3 is minimized, and the clutch 15 is used.
Since the above torque transmission is enabled by the
It is possible to obtain a braking effect (engine braking) by the internal combustion engine 3 while avoiding overcharging.

FIGS. 4, 5 and 6 are block diagrams schematically showing rear wheel drive systems that can be applied to the golf carts of the first and second embodiments, respectively. In the figure, the same reference numerals as those in FIGS. 1 to 3 indicate the same or corresponding portions.

In the rear wheel drive system shown in FIG. 4, the drive pulley 3a attached to the output shaft of the internal combustion engine 3 and the driven pulley 17a attached to the rotary shaft of the generator 17 are connected by the V belt 17b. . Therefore, the generator 17 is constantly driven to rotate while the internal combustion engine 3 is operating.

A V-belt type continuously variable transmission 14 is provided between the output shaft of the internal combustion engine 3 and the input shaft of the transmission 12.
Is provided. The continuously variable transmission 14 includes a variable-diameter drive pulley 14a mounted downstream of the clutch 15 of the internal-combustion engine output shaft and a variable-diameter driven pulley 14b mounted on the transmission input shaft.
It has a structure in which 4c is wound.

The continuously variable transmission 14 does not transmit the rotational force when the internal combustion engine 3 is in the idle operation range, transmits the rotational force of the internal combustion engine to the rear wheels when the rotational speed exceeds a predetermined rotational speed, and the internal combustion engine 3 The lower the rotation speed, the larger the reduction ratio, and the higher the rotation speed, the smaller the reduction ratio.

In the rear wheel drive system shown in FIG. 4, when the state of charge of the battery exceeds a predetermined reference value and the vehicle is in the first running state, the internal combustion engine 3 is not operated,
Further, the clutch 5 is turned off. As a result, the golf cart is driven only by the electric motor 2 with the electromagnetic brake 2a. At this time, since the electromagnetic clutch 15 is turned off, the internal combustion engine does not become a rotational resistance.

On the other hand, when the state of charge of the battery is less than the reference value, the internal combustion engine 3 is operated and the electromagnetic clutch 15 is turned off even in the first traveling state.
Therefore, in this case, the generator 17 is driven to charge the battery, and the power of the internal combustion engine 3 is not transmitted to the rear wheels 4.

Further, in the above-mentioned second traveling state, the internal combustion engine 3 and the electric motor 2 are irrespective of the battery remaining capacity.
Both are operated and the clutch 15 is turned on. As a result, the power of the internal combustion engine 3 is transmitted to the rear wheels 4 and the generator 17 is rotationally driven.

The rear-wheel drive system of FIG.
Second clutch 15 between the transmission and the transmission 12
It is different from the rear wheel drive system in FIG. 4 in that a is provided.

In the rear wheel drive system shown in FIG. 5, when the remaining battery capacity exceeds a predetermined reference value and the vehicle is in the first running state, the internal combustion engine 3 is not operated and the clutch 15a is operated. Is turned off. As a result, the golf cart is driven only by the electric motor 2 with the electromagnetic brake 2a. At this time, since the electromagnetic clutch 15a is turned off, the rotation of the continuously variable transmission 14 is avoided. In this case, the electromagnetic clutch 15 may be turned off.

On the other hand, when the state of charge of the battery is less than the reference value, the internal combustion engine 3 is operated and the electromagnetic clutches 15 and 15a are turned off even in the first running state. Therefore, in this case, the generator 17 is driven to charge the battery, and the power of the internal combustion engine 3 is not transmitted to the rear wheels 4.

In the second running state described above, the internal combustion engine 3 and the electric motor 2 are irrespective of the remaining battery capacity.
Both are operated and the clutches 15 and 15a are turned on. As a result, the power of the internal combustion engine 3 is transmitted to the rear wheels 4 and the generator 17 is rotationally driven.

In the drive system of FIG. 6, the second clutch 15a is a one-way clutch 15b which allows only power transmission from the internal combustion engine side to the transmission side, and the torque center 16a is arranged downstream of the transmission. Is different from the drive system in FIG. The operational effects of the drive system shown in FIG. 6 are similar to those of the drive system shown in FIG.

[Brief description of drawings]

FIG. 1 is a block configuration diagram for explaining an operation control device for a hybrid golf cart according to a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the first embodiment.

FIG. 3 is a block configuration diagram for explaining an operation control device for a hybrid golf cart according to a second embodiment of the present invention.

FIG. 4 is a block diagram of a rear wheel drive system that can be used in the first and second embodiments.

FIG. 5 is a block diagram of a rear wheel drive system that can be used in the first and second embodiments.

FIG. 6 is a block diagram of a rear wheel drive system that can be used in the first and second embodiments.

[Explanation of symbols]

1 Hybrid golf cart (hybrid vehicle) 2 electric motor 2'power generation motor 3 Internal combustion engine 4 rear wheels (driving wheels) 15 clutch 17 generator 18 First switch 20 battery 21 Battery state detector (remaining capacity detector) 29 Vehicle speed sensor (detection means) 31 Second switch

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B60K 41/00 B60L 11/14 B60L 11/14 B60K 9/00 ZHVE F term (reference) 3D039 AA02 AA04 AB27 AC34 3D041 AA11 AA18 AA21 AB07 AC01 AC10 AC15 AC19 AD02 AD04 AD50 AD51 AE02 AE03 AE16 5H115 PA05 PA12 PC06 PG04 PI13 PI22 PU22 QN03 RE03 SE03 SE05 SE09 TI02

Claims (4)

[Claims] 1. An operation control device for a hybrid vehicle having both an electric motor and an internal combustion engine as a drive source, wherein at least clutch means capable of interrupting torque transmission from a drive wheel to the internal combustion engine side is provided, and a target by the setting means. In a first traveling state in which the vehicle speed is higher than the vehicle speed detected by the detection means and the speed difference is less than a predetermined value, the operation of the internal combustion engine is stopped, the torque transmission is cut off by the clutch means, and the drive wheels are driven by an electric motor. In the second traveling state in which the speed difference is equal to or more than the predetermined value, the generator drives the drive wheels by both the electric motor and the internal combustion engine to charge the battery that is the power source of the electric motor. The internal combustion engine can be driven, the battery remaining capacity detection means is provided, and when the battery remaining capacity detection value is less than a predetermined value, the first running state is performed. A drive control device for a hybrid vehicle, characterized in that the internal combustion engine is driven even in a stationary state. 2. An operation control device for a hybrid vehicle having both an electric motor and an internal combustion engine as a drive source, wherein at least clutch means capable of interrupting torque transmission from a drive wheel to the internal combustion engine side is provided, and a target by the setting means. In a first traveling state in which the vehicle speed is higher than the vehicle speed detected by the detection means and the speed difference is less than a predetermined value, the operation of the internal combustion engine is stopped, the torque transmission is cut off by the clutch means, and the drive wheels are driven by an electric motor. In the second traveling state in which the speed difference is equal to or more than the predetermined value, the generator drives the drive wheels by both the electric motor and the internal combustion engine to charge the battery that is the power source of the electric motor. A first switch is provided between the generator and the battery, which is drivable by the internal combustion engine, and a remaining capacity detecting means for the battery is provided; In the second traveling state, the first switch is turned on when the battery remaining capacity detection value is less than the predetermined value, and when the battery remaining capacity detection value is equal to or more than the predetermined value, the first switch is turned on.
An operation control device for a hybrid vehicle, which is characterized in that a switch is turned off. 3. An operation control device for a hybrid vehicle having both an electric motor and an internal combustion engine as a drive source, wherein at least clutch means capable of interrupting torque transmission from a drive wheel to the internal combustion engine side is provided, and a target by the setting means. In a first traveling state in which the vehicle speed is higher than the vehicle speed detected by the detection means and the speed difference is less than a predetermined value, the operation of the internal combustion engine is stopped, the torque transmission is cut off by the clutch means, and the drive wheels are driven by an electric motor. In the second traveling state in which the speed difference is equal to or more than the predetermined value, the generator drives the drive wheels by both the electric motor and the internal combustion engine to charge the battery that is the power source of the electric motor. A first switch is provided between the generator and the battery, which is drivable by the internal combustion engine, and a remaining capacity detecting means for the battery is provided; In the first traveling state, when the battery remaining capacity detection value is less than a predetermined value, the internal combustion engine is operated, the torque transmission is cut off by the clutch means, and the first switch is turned on to perform the second traveling. In the state, when the remaining battery capacity detection value is less than a predetermined value, the first switch is turned on, and when it is more than the predetermined value, the first switch is turned off. apparatus. 4. The detection motor speed according to claim 1, wherein the electric motor is a power generation motor having a power generation function, and a second switch is provided between the power generation motor and the battery so that the detected vehicle speed is higher than the target vehicle speed. In the large third running state, when the remaining battery capacity is equal to or higher than a predetermined value, the first and second switches are turned off, the throttle opening of the internal combustion engine is minimized, the torque transmission is enabled by the clutch, and the remaining battery capacity is maintained. An operation control device for a hybrid vehicle, wherein the second switch is turned on when the capacity is less than the predetermined value, and the torque transmission is cut off by the clutch.