JPH106806A - Vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate an auxiliary machine by a battery when an internal combustion engine is stopped and by the internal combustion engine when the internal combustion engine is driven. SOLUTION: A vehicle comprises an internal combustion engine 11; an automatic transmission 12 to effect a gear shift through receipt of rotation from the internal combustion engine 11; an auxiliary machine; a motor coupled to the drive shaft of the auxiliary machine; a battery 19 connected to the motor; an internal combustion engine control means to stop the internal combustion engine 11 when there is no need to drive the internal combustion engine 11; and a one-way clutch intercoupling the internal combustion engine 11 and the drive shaft of the auxiliary machine and brought into a lock state when a machine output generated by driving the internal combustion engine 11 is transmitted to the drive shaft of the auxiliary machine and the motor, and brought into a free state when a machine output generated through drive of the motor is transmitted to the internal combustion engine 11. During the stop of a vehicle, the internal combustion engine 11 is brought into a stop.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle.

[0002]

2. Description of the Related Art Conventionally, in a vehicle using an internal combustion engine, the rotation generated by the internal combustion engine is transmitted to a transmission, and after the transmission changes the speed, the transmission is transmitted to driving wheels. . By the way, when the vehicle is stopped such as at a traffic light, the internal combustion engine is driven in an idling state. In this case, the internal combustion engine is driven even when the vehicle is not running, so that not only the amount of exhaust gas is increased, but also fuel efficiency is deteriorated.

[0003] Therefore, when braking during stopping or running,
2. Description of the Related Art There has been provided an engine temporary stop system for temporarily stopping an internal combustion engine when a foot is released from an accelerator pedal, such as when traveling downhill, that is, when an accelerator off state continues for a predetermined time. In this case, not only can the amount of exhaust gas be reduced by the amount of time when the internal combustion engine is stopped, but also fuel efficiency can be improved.

However, the internal combustion engine is usually connected to auxiliary equipment such as an air conditioner, a brake vacuum pump, a P / S pump for operating power steering, and a water pump for cooling water. By stopping, the auxiliary machine cannot be operated. In view of this, each of the auxiliary machines is electrified so that each of the auxiliary machines can be operated by the electric power of the battery even when the internal combustion engine is stopped.

[0005]

However, in the above-mentioned conventional vehicle, since each auxiliary device cannot be operated by means other than the electric power, the electric power of the battery is always consumed. Therefore, each capacity of the battery must be increased. Must
The vehicle becomes larger and heavier. The present invention
By solving the problems of the conventional vehicle, reducing the amount of exhaust gas and improving fuel efficiency, the internal combustion engine is driven by a battery when the internal combustion engine is stopped, and the internal combustion engine is driven by the internal combustion engine when the internal combustion engine is driven. It is an object of the present invention to provide a vehicle that can operate an auxiliary machine, can reduce the capacity of a battery, and can be reduced in size and weight.

[0006]

For this purpose, in a vehicle according to the present invention, an internal combustion engine, an automatic transmission for performing a shift by receiving rotation from the internal combustion engine, an auxiliary machine, and a drive shaft of the auxiliary machine are provided. A motor connected to the motor, a battery connected to the motor, an internal combustion engine control means for stopping the internal combustion engine when it is not necessary to drive the internal combustion engine, and a drive shaft for the internal combustion engine and the auxiliary machine. Concatenate,
The mechanical output generated by driving the internal combustion engine is placed in a locked state when transmitted to the drive shaft and the motor of the auxiliary machine, and the mechanical output generated by driving the motor generates the mechanical output. A one-way clutch that is placed in a free state when transmitted to the engine.

In another vehicle according to the present invention, the automatic transmission further includes a friction engagement element on a rotation input side of the internal combustion engine, and the internal combustion engine control means releases the friction engagement element. The internal combustion engine is stopped after
After starting the internal combustion engine, the friction engagement element is engaged. In still another vehicle according to the present invention, an auxiliary pulley is provided on a drive shaft of the auxiliary machine, and a crank pulley is provided on a crankshaft receiving rotation of the internal combustion engine. The accessory is operated via the pulley.

[0008] In still another vehicle of the present invention, the internal combustion engine control means stops the internal combustion engine while the vehicle is stopped.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a conceptual diagram of a vehicle according to a first embodiment of the present invention, and FIG. 2 is a diagram illustrating a power transmission system according to the first embodiment of the present invention. In the figure, reference numeral 11 denotes an internal combustion engine (E / G), which is controlled by a control device (not shown) and is driven while the vehicle is running and stopped when the vehicle is stopped. Reference numeral 12 denotes a transmission that is connected to the internal combustion engine 11 and performs a shift by receiving rotation generated by the internal combustion engine 11, for example, an automatic transmission. The automatic transmission 12 is provided with a clutch C1 as a friction engagement element, and the clutch C1 is disengaged by a hydraulic servo (not shown).

The rotation after the shift is transmitted from the automatic transmission 12 to drive wheels (not shown). Also, 1
Reference numeral 3 denotes a crank pulley that receives the rotation of the internal combustion engine 11 via a one-way clutch F. The auxiliary pulley 2 is connected to the crank pulley 13 via a V-belt 21.
2 and 23 are connected to auxiliary pulleys 26 via a V-belt 25;
The auxiliary pulley 22 is connected to the air conditioner 15, the auxiliary pulley 23 is connected to a DC electric motor 17 as a motor, and the auxiliary pulley 26 is connected to the oil pump 1.
A brake vacuum pump 18 for supplying vacuum to a brake system (not shown) is connected to the auxiliary machine pulley 27 as an auxiliary machine. In addition, auxiliary equipment such as a P / S pump for operating a power steering (not shown) and a water pump for a cooling water system can also be connected.

Therefore, each accessory is connected to the internal combustion engine 1
It is operated by receiving the rotation transmitted from 1 to the crank pulley 13. In addition, 30 is a crankshaft, 31-34 is a drive shaft of each auxiliary machine. In this case, the crank pulley 13 and each of the auxiliary pulleys 22, 23, 26, and 27 are a V-belt having the crank pulley 13 as a primary pulley and the auxiliary pulleys 22, 23, 26, and 27 as secondary pulleys. Each constitutes a continuously variable transmission (CVT).

The crank pulley 13 and the auxiliary pulleys 22, 23, 26, and 27 have fixed pulleys, movable pulleys, and hydraulic servos K-1 to K-1.
K-5 is provided, and each movable pulley is moved by supplying a predetermined hydraulic pressure to each of the hydraulic servos K-1 to K-5, and the crank pulley 13 and each of the auxiliary pulleys 22, 23, 26 are moved. , 27, the effective diameters of the crank pulley 13 and the auxiliary pulleys 22, 23, 26, 27 are changed, so that the speed ratio is continuously variable. The gear is changed.

Therefore, by controlling the rotation speed of each of the accessory drive shafts 31 to 34, the air conditioner 15, the oil pump 16, the electric motor 17, the brake vacuum pump 18 and the like can be operated in a highly efficient state. The electric motor 17 has a battery 19 for auxiliary equipment of 12 [V].
Is connected. The electric motor 17 can be used as a generator to charge the battery 19. Further, auxiliary equipment such as a light and a stereo is connected to the battery 19, and the auxiliary equipment and the electric motor 17 are connected.
Can be supplied with current.

Next, the operation of the vehicle having the above configuration will be described. FIG. 3 is a control block diagram of the vehicle according to the first embodiment of the present invention, and FIG. 4 is a flowchart showing the operation of the internal combustion engine temporary stop processing of the vehicle according to the first embodiment of the present invention. In FIG. 3, 11 is an internal combustion engine, 12 is an automatic transmission, C1 is a clutch, C-1, K-
1 to K-5 are hydraulic servos, 51 is the hydraulic servo C-
1, a hydraulic control device for supplying a predetermined hydraulic pressure to K-1 to K-5, a control device 52 for controlling the entire vehicle, and a control device 53 for controlling a fuel system, an ignition system and the like during running of the vehicle to control the internal combustion engine. An engine driving device that controls the number of revolutions of the engine 11 and starts or stops the internal combustion engine 11 by a starter (not shown) in a process of temporarily stopping the internal combustion engine while the vehicle is stopped, 55 is a vehicle speed sensor that detects a vehicle speed, and 56 is a vehicle speed sensor. An accelerator sensor 57 detects the degree of depression of an accelerator pedal (not shown), and a brake sensor 57 detects whether a brake pedal (not shown) is depressed.

In this case, during running of the vehicle, the internal combustion engine 11 is driven via the engine driving device 53,
The mechanical output, that is, the rotation, generated in the internal combustion engine 11 is transmitted to drive wheels (not shown) via the automatic transmission 12. At this time, since the one-way clutch F (FIG. 1) is placed in the locked state, the rotation of the internal combustion engine 11 is controlled by the one-way clutch F, the crank pulley 13, the accessory pulleys 22, 23, 26, 27, and V
The power is transmitted to the air conditioner 15, the oil pump 16, the electric motor 17, the brake vacuum pump 18 and the like via the belts 21 (FIG. 2) and 25. Then, the battery 19 is charged by the current generated by the electric motor 17.

Therefore, while the vehicle is running, the air conditioner 15, oil pump 16, electric motor 17, brake vacuum pump 18 and the like are operated by the rotation of the internal combustion engine 11. And the electric motor 17
Since the battery 19 is charged by the current generated by the above, it is possible to operate auxiliary equipment such as a light and a stereo.

At this time, the hydraulic servos K-1 to K-1
Since the hydraulic pressure supplied to −5 is controlled by the hydraulic control device 51, the air conditioner 15, the oil pump 16, the electric motor 17, the brake vacuum pump 18 and the like are operated in a highly efficient state. By the way, when the driver releases his / her foot from the accelerator pedal for a predetermined time and depresses the brake pedal, the vehicle speed gradually decreases, and the vehicle is stopped. Therefore, the accelerator sensor 56 detects that the accelerator is off when the driver releases his / her foot from the accelerator pedal for a predetermined time, the vehicle speed sensor 55 detects the vehicle speed of zero, and the brake sensor 57 detects that the driver depresses the brake pedal. Detects that the brake is on, the control device 5
The second internal combustion engine control means (not shown) drains the oil of the hydraulic servo C-1 via the hydraulic control device 51 to release the clutch C1.

Therefore, the automatic transmission 12 becomes neutral, the rotation from the internal combustion engine 11 is cut off by the clutch C1, and is not transmitted to the drive wheels. As a result, the vehicle is stopped. Subsequently, the internal combustion engine control means stops the internal combustion engine 11 via the engine drive device 53 when a set time until the clutch C1 is sufficiently released has elapsed. At this time, the electric motor 17 is used as an electric motor, and a current is supplied from the battery 19. The mechanical output generated by driving the electric motor 17, that is, the rotation is transmitted to the air conditioner 15, the oil pump 16, the brake vacuum pump 18, and the like via the crank pulley 13, and the air conditioner 15, the oil pump 16, The brake vacuum pump 18 and the like are operated. At this time, the hydraulic pressure generated by the oil pump 16
The hydraulic pressure is set to a predetermined value by the hydraulic servos K-1 to K-5.
To the air conditioner 15, oil pump 16,
The brake vacuum pump 18 and the like are operated in a highly efficient state.

Also, auxiliary equipment such as a light and a stereo can be operated by the current from the battery 19. During this time, since the one-way clutch F is in the free state, the rotation generated by the electric motor 17 is not transmitted to the internal combustion engine 11. Therefore, no drag occurs in the internal combustion engine 11.

Subsequently, when the driver depresses the accelerator pedal, the accelerator sensor 56 detects that the accelerator is on, and the control device 52 starts the internal combustion engine 11 via the engine drive device 53. Then, when a set time elapses until the internal combustion engine 11 is rotated at the idle speed, the control device 52 supplies a hydraulic pressure to the hydraulic servo C-1 via the hydraulic control device 51 to engage the clutch C1.

As described above, when it is not necessary to drive the internal combustion engine 11, for example, while the vehicle is stopped, the internal combustion engine 11
Can be stopped, the amount of exhaust gas can be reduced, and fuel efficiency can be improved. Also,
While the internal combustion engine 11 is stopped, the air conditioner 15
Not only can the oil pump 16 and the brake vacuum pump 18 be operated, but also auxiliary equipment such as lights and stereos can be operated.

While the internal combustion engine 11 is being driven while the vehicle is running, the air conditioner 15, oil pump 16, brake vacuum pump 18 and the like can be operated by the internal combustion engine 11, so that the electric motor 17 The capacity of the battery 19 can be reduced. Therefore, the vehicle can be reduced in size and weight.

Further, even if the internal combustion engine 11 is started, the rotation is not transmitted to the drive wheels since the clutch C1 is released. The hydraulic pressure generated by the oil pump 16 can be set to a predetermined hydraulic pressure by the hydraulic control device 51 and supplied to the hydraulic servos K-1 to K-5, so that the air conditioner 15, the oil pump 16, the electric motor 17, not only can the brake vacuum pump 18 and the like be operated in a highly efficient state, but also the load on the internal combustion engine 11 can be reduced.

Further, when the internal combustion engine 11 is started after parking for a long time in the hot sun, the electric motor 17 is driven while the internal combustion engine 11 is stopped, the air conditioner 15 is operated for a predetermined time, and the inside of the vehicle is adjusted to an appropriate temperature. You can get on the car afterwards. Next, a flowchart of the internal combustion engine temporary stop processing will be described. Step S1 The accelerator sensor 56, the vehicle speed sensor 55 and the brake sensor 57 are monitored. Step S2: It is determined whether or not the accelerator sensor 56 has detected that the accelerator is off by releasing the foot from the accelerator pedal for a predetermined time. When the accelerator sensor 56 detects the accelerator off, the process proceeds to step S3, and when the accelerator off is not detected, the process ends. Step S3: It is determined whether or not the vehicle speed sensor 55 detects zero vehicle speed. When the vehicle speed sensor 55 detects zero vehicle speed, the process proceeds to step S4, and when the vehicle speed sensor 55 does not detect zero vehicle speed, the process ends. Step S4: It is determined whether or not the brake sensor 57 detects that the brake is turned on when the driver depresses the brake pedal. When the brake sensor 57 detects the brake-on, the process proceeds to step S5, and when the brake-on is not detected, the process ends. Step S5: The internal combustion engine control means of the control device 52 releases the clutch C1. Step S6: The internal combustion engine 11 is stopped. Step S7: It is determined whether or not the accelerator sensor 56 has detected that the accelerator has been turned on by depressing the accelerator pedal by the driver. When the accelerator sensor 56 detects that the accelerator is on, the process proceeds to step S8, and when the accelerator is not detected, the process ends. Step S8: The control device 52 starts the internal combustion engine 11. Step S9: When a predetermined time elapses until the internal combustion engine 11 is rotated at the idle speed, the control device 5
2 engages the clutch C1.

Next, a second embodiment of the present invention will be described. FIG. 5 is a diagram showing a power transmission system according to the second embodiment of the present invention. In the figure, reference numeral 13 denotes a crank pulley that receives the rotation of the internal combustion engine 11 (FIG. 1) via a one-way clutch F. The crank pulley 13
The auxiliary pulley 22 via the V-belt 61, the auxiliary pulley 23 via the V-belt 62, the auxiliary pulley 26 via the V-belt 63, and the auxiliary pulley 26 via the V-belt 64 Pulleys 27 are connected to each other,
2, an air conditioner 15 is connected to the auxiliary pulley 26, an oil pump 16 is connected to the auxiliary pulley 27, and a brake vacuum pump 18 for supplying vacuum to a brake system (not shown) is connected to the auxiliary pulley 27 as an auxiliary. A DC electric motor 17 as a motor is connected. In addition, auxiliary equipment such as a P / S pump for operating a power steering (not shown) and a water pump for a cooling water system can also be connected.

In this case, the crank pulley 13 and each of the accessory pulleys 22, 23, 26, and 27 have the crank pulley 13 as a primary pulley, and each of the accessory pulleys 22,
V-belt type continuously variable transmissions each having 23, 26, and 27 as secondary pulleys are configured. Next, the third aspect of the present invention
An embodiment will be described.

FIG. 6 is a conceptual diagram of a vehicle according to a third embodiment of the present invention, and FIG. 7 is a diagram illustrating a power transmission system according to the third embodiment of the present invention. In this case, the crank pulley 13 directly receives the rotation of the internal combustion engine 11, and the crank pulley 13 and the transmission pulley 66 are connected via a V-belt 68. The transmission pulley 66 and the accessory pulley 23 are connected via a one-way clutch F, and a DC electric motor 17 as a motor is connected to the accessory pulley 23.

Further, the accessory pulleys 22, 26, and 27 are connected to the accessory pulley 23 via a V-belt 69, respectively. The air conditioner 15 is connected to the accessory pulley 22, and the oil The pump 16 is connected to the auxiliary pulley 2
A brake vacuum pump 18 for supplying a vacuum to a brake system (not shown) is connected to each as an auxiliary machine.
In addition, auxiliary equipment such as a P / S pump for operating a power steering (not shown) and a water pump for a cooling water system can also be connected.

In this case, the crank pulley 13 and the transmission pulley 66 constitute a V-belt type continuously variable transmission having the crank pulley 13 as a primary pulley and the transmission pulley 66 as a secondary pulley. In addition, the auxiliary pulley 23 and each of the auxiliary pulleys 22, 26, 27 are configured such that the auxiliary pulley 23 is a primary pulley and the auxiliary pulley 2 is
A continuously variable transmission of a V-belt type is constituted with secondary pulleys 2, 26 and 27.

Reference numeral 12 denotes an automatic transmission, 19 denotes a battery, and C1 denotes a clutch. Next, a fourth embodiment of the present invention will be described. FIG. 8 is a conceptual diagram of a vehicle according to a fourth embodiment of the present invention, and FIG. 9 is a diagram illustrating a power transmission system according to the fourth embodiment of the present invention. in this case,
The crank pulley 13 directly receives the rotation of the internal combustion engine 11, and the crank pulley 13 and the transmission pulley 66 are connected via a V-belt 68. The transmission pulley 66 and the auxiliary pulley 23 are connected via a one-way clutch F, and the auxiliary pulley 23 is connected to a DC electric motor 17 as a motor.
Is further connected to an air conditioner 15.

Further, auxiliary machine pulleys 26 and 27 are connected to the auxiliary machine pulley 23 via a V-belt 70, respectively. The oil pump 16 is connected to the auxiliary machine pulley 26, and the auxiliary machine pulley 27 is not shown. A brake vacuum pump 18 for supplying a vacuum to the brake system is connected as an auxiliary machine. In addition, auxiliary equipment such as a P / S pump for operating a power steering (not shown) and a water pump for a cooling water system can also be connected.

In this case, the crank pulley 13 and the transmission pulley 66 constitute a V-belt type continuously variable transmission having the crank pulley 13 as a primary pulley and the transmission pulley 66 as a secondary pulley. In addition, the auxiliary pulley 23 and the auxiliary pulleys 26 and 27 are configured such that the auxiliary pulley 23 is a primary pulley and the auxiliary pulleys 26 and 2
A V-belt type continuously variable transmission 7 is used as a secondary pulley.

Reference numeral 12 denotes an automatic transmission, 19 denotes a battery, and C1 denotes a clutch.

[0034]

As described above in detail, according to the present invention, in a vehicle, an internal combustion engine, an automatic transmission for performing a shift by receiving rotation from the internal combustion engine, an auxiliary machine, and the auxiliary machine are provided. Motor connected to the drive shaft of the machine, a battery connected to the motor, internal combustion engine control means for stopping the internal combustion engine when it is not necessary to drive the internal combustion engine, the internal combustion engine and the auxiliary machine When the mechanical output generated by driving the internal combustion engine is transmitted to the drive shaft of the accessory and the motor, the lock is placed and generated by driving the motor. A one-way clutch that is placed in a free state when the applied mechanical output is transmitted to the internal combustion engine.

In this case, the internal combustion engine is driven while the vehicle is running, and the mechanical output of the internal combustion engine is transmitted to the drive wheels via the automatic transmission. At this time, since the one-way clutch is placed in the locked state, the mechanical output of the internal combustion engine is transmitted to the motor and the accessory via the one-way clutch. Then, the battery is charged by the current generated by the motor.

Next, while the vehicle is stopped, the internal combustion engine is stopped. At this time, the motor is used as an electric motor, and a current is supplied from a battery. Then, the rotation generated by the motor is transmitted to the accessory via the crank pulley. As described above, since the internal combustion engine can be stopped while the vehicle is stopped, the amount of exhaust gas can be reduced, and fuel efficiency can be improved. In addition, while the internal combustion engine is stopped, not only auxiliary equipment such as an air conditioner, an oil pump, and a brake vacuum pump can be operated, but also auxiliary equipment such as a light and a stereo can be operated.

Further, during this time, the one-way clutch is placed in the free state, so that no dragging of the internal combustion engine occurs. While the internal combustion engine is being driven while the vehicle is running, the auxiliary devices such as the air conditioner, oil pump, and brake vacuum pump can be operated by the internal combustion engine, so that the capacity of the battery can be reduced. . Therefore, the vehicle can be reduced in size and weight.

Further, when the internal combustion engine is started after being parked for a long time in the hot sun, the electric motor is driven while the internal combustion engine is stopped to operate the air conditioner for a predetermined time, and after the inside of the vehicle is brought to an appropriate temperature, the passenger enters the vehicle. You can also. In another vehicle of the present invention, the automatic transmission further includes a friction engagement element on a rotation input side of the internal combustion engine, and the internal combustion engine control means controls the internal combustion engine after releasing the friction engagement element. The engine is stopped and the friction engagement element is engaged after starting the internal combustion engine.

In this case, even if the internal combustion engine is started, the rotation is not transmitted to the drive wheels since the clutch is released.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a vehicle according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a power transmission system according to the first embodiment of the present invention.

FIG. 3 is a control block diagram of the vehicle according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of a process of temporarily stopping the internal combustion engine of the vehicle according to the first embodiment of the present invention.

FIG. 5 is a diagram illustrating a power transmission system according to a second embodiment of the present invention.

FIG. 6 is a conceptual diagram of a vehicle according to a third embodiment of the present invention.

FIG. 7 is a diagram illustrating a power transmission system according to a third embodiment of the present invention.

FIG. 8 is a conceptual diagram of a vehicle according to a fourth embodiment of the present invention.

FIG. 9 is a diagram showing a power transmission system according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Internal combustion engine 12 Automatic transmission 13 Crank pulley 15 Air conditioner 16 Oil pump 17 Electric motor 18 Brake vacuum pump 19 Battery 22, 23, 26, 27 Auxiliary pulley 52 Control device 66 Transmission pulley C1 Clutch F One-way clutch

Claims (4)

[Claims] 1. An internal combustion engine, an automatic transmission for performing a shift by receiving rotation from the internal combustion engine, an auxiliary machine, a motor connected to a drive shaft of the auxiliary machine, and a battery connected to the motor And an internal combustion engine control means for stopping the internal combustion engine when it is not necessary to drive the internal combustion engine, and connecting the internal combustion engine and a drive shaft of the auxiliary machine,
The mechanical output generated by driving the internal combustion engine is placed in a locked state when transmitted to the drive shaft and the motor of the auxiliary machine, and the mechanical output generated by driving the motor generates the mechanical output. A vehicle having a one-way clutch that is put in a free state when transmitted to an engine. 2. The automatic transmission includes a friction engagement element on a rotation input side of the internal combustion engine, and the internal combustion engine control means stops the internal combustion engine after releasing the friction engagement element. The vehicle according to claim 1, wherein the friction engagement element is engaged after starting the engine. 3. An auxiliary pulley is provided on a drive shaft of the auxiliary machine, and a crank pulley is provided on a crankshaft receiving rotation of the internal combustion engine, and the auxiliary machine is connected via the auxiliary pulley and the crank pulley. Claim 1 actuated
The vehicle described in the above. 4. The vehicle according to claim 1, wherein the internal combustion engine control means stops the internal combustion engine while the vehicle is stopped.