JPH0549105A - Controller for vehicle provided with retarder - Google Patents

Abstract

PURPOSE:To prevent trouble by utilizing a retarder for emergency escape upon engine stall of vehicle. CONSTITUTION:In a retarder 20 wherein an induction machine 21 is mounted on a flywheel 3 in an engine drive system provided with a manual transmission 6, an electric controller 22 is provided with an emergency escape switch 43 and an emergency escape control circuit 44. Upon engine 1 stall due to various troubles when a vehicle is passing through a railroad crossing, the emergency escape switch 43 is operated while confirming the engine stall and Low shift of the manual transmission 6. A signal for rotating field lead control is then delivered from the emergency escape control circuit 44 to the induction machine 21 which transmits rotary power to the wheel side thus driving the vehicle powerfully and realizing emergency escape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retarder device for a vehicle such as an automobile, in which a retarder device including an induction machine mounted on a drive system controls electric braking and auxiliary acceleration. The present invention relates to a control device used for escape.

[0002]

2. Description of the Related Art In recent years, the applicant of the present invention has already provided a squirrel-cage polyphase induction machine in a drive system of a vehicle such as an automobile. Then, when this induction machine is braking, it operates as a generator to perform electric braking, and at this time, the induction machine converts mechanical energy into electric energy and regenerates it into a battery. Also, when starting or accelerating,
A retarder device has been proposed which controls an induction machine to operate as an electric motor by a battery power source to perform auxiliary acceleration. By the energy regeneration cycle of this retarder device,
Especially in large vehicles, it is possible to reduce the effect of engine braking due to downsizing of the engine and to supplement the heavy use of service brakes, and it is possible to reduce fuel and exhaust gas at the time of starting and accelerating. Attention has been paid.

Conventionally, in the above retarder device for a vehicle, an induction machine is mounted between the flywheel housing having a large inertial mass on the output side of the engine and the flywheel housing. Then, in the electric control system, when the braking switch is operated, a rotating magnetic field delayed from the shaft rotation speed is applied to the induction machine to operate as a generator and electrically brake. At this time, the mechanical energy of the drive system is converted into electrical energy, and the battery is charged and regenerated. Further, when the acceleration switch is operated, a rotating magnetic field faster than the shaft rotation speed is applied to the induction machine, and a voltage of a battery is applied to operate as an electric motor for auxiliary acceleration.

[0004]

By the way, the above-mentioned conventional control device for the retarder device is mainly configured to electrically brake and regenerate energy at this time to assist the acceleration. However, the range of use of the retarder device is further expanded. Therefore, it is desired to effectively utilize it for various controls.

The present invention has been made in view of this point, and an object of the present invention is to prevent an accident or the like by utilizing a retarder device for an emergency escape when a vehicle cannot move due to an engine stop.

[0006]

In order to achieve the above object, according to the present invention, an induction machine capable of generating and electric power is mounted on a drive system of an engine, and a stator portion of the induction machine is connected via an inverter circuit. It is connected to a battery that regenerates generated power,
In a control device for a vehicle with a retarder in which a rotating magnetic field delay circuit for electric braking and an auxiliary driving rotating magnetic field advance circuit are connected to an inverter circuit, an emergency escape switch and an emergency escape switch in a state in which power can be transmitted to the wheels when the engine is stopped An emergency escape control circuit that outputs an operation signal to the rotating magnetic field advance circuit when a signal is input is provided.

[0007]

According to the above construction, while the vehicle is running with the engine running, the induction machine is electrically braked by controlling the delay of the rotating magnetic field, and is assisted by controlling the advance of the rotating machine. In addition, if the engine stops due to various troubles when the vehicle is on a railroad crossing, and the drive system in which the induction machine is mounted on the input side of the manual transmission, shifts to a lower speed stage. Operate the emergency escape switch. Then, the induction machine is controlled by the signal of the emergency escape control circuit to advance in the rotating magnetic field to enter the electric mode, and the rotational power of the induction machine is transmitted to the wheel side to move the vehicle and make an emergency escape.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. Referring to FIG. 1, a case of a drive system including a manual transmission will be described. The crankshaft 2 of the engine 1 is connected to a flywheel 3, and the flywheel 3 is provided with a clutch 4. Also, the input shaft 5 from the clutch 4
Is connected to a manual transmission 6, and the output shaft 7 is configured to be transmitted to drive wheels 11 via a propeller shaft 8, a differential device 9, an axle 10, and the like. On the other hand, a starter motor 13 is connected to the flywheel 3 via a gear 12 so as to start the engine 1. Therefore, in such a drive system, the induction machine 21 of the retarder apparatus 20 is mounted between the flywheel 3 and the housing 14 attached thereto, and the electric control apparatus 22 is connected to the circuit of the induction machine 21. It is connected.

The induction machine 21 is a squirrel-cage polyphase, and the flywheel 3 has a rotor portion 2 composed of a rotor core and a coil.
1b is provided, and the housing 14 has a stator-side core,
A stator portion 21a composed of a coil is provided. The rotor portion 21b and the stator portion 21a are arranged in close proximity to each other in the radial direction, and the rotor portion 21b and the stator portion 21a are opposed to each other.
It operates as an electric motor by advancing the rotating magnetic field of
On the contrary, it is configured to operate as a generator by delaying.

The electric control unit 22 will be described. The stator portion 21a of the induction machine 21 is connected to a battery 24 via an inverter circuit 23, and a charging circuit 25 and a discharging circuit 26 are connected to the circuit of the battery 24. The inverter circuit 23 is composed of a transistor and a diode switch element. When an opening / closing signal of a predetermined frequency is input, the induction machine 21 operates as a generator, and at this time, the induction machine 21 is operated.
AC voltage generated in the
The motor 24 is regenerated into the electric field or is applied with the voltage of the battery 24 to the induction machine 21 to operate as an electric motor. Also,
It has an electric braking switch 27 operated by the driver, an auxiliary acceleration switch 28, and a rotation sensor 29 for detecting the shaft rotation speed of the drive system.

The electric braking switch 27 is connected to the rotating magnetic field delay circuit 30, and when this switch signal is input, a frequency signal of the rotating magnetic field delayed by a predetermined amount with respect to the shaft rotation speed N according to the braking torque is generated, and the inverter circuit 23 is generated. Output to. At this time, the power generation mode signal is input to the charging circuit 25, the inverter output voltage is adjusted, and the battery 24 can be charged. The rotating magnetic field delay circuit 30 is set in a weak power generation mode so that the battery can be constantly charged during normal traveling. The auxiliary acceleration switch 28 is connected to the rotating magnetic field advance circuit 31, and when this switch signal is input, a frequency signal of the rotating magnetic field advanced by a predetermined amount with respect to the shaft rotation speed N is generated according to the drive torque, and this frequency signal is converted into the inverter circuit 23. Output to. At this time,
The electric mode signal is input to the discharge circuit 26, a DC voltage necessary for operating the induction machine 21 as an electric motor is generated by the battery power source, and this voltage is applied to the induction machine 21.

Further, the control system for emergency escape in the electric control unit 22 will be described. The manual transmission 6 has a position sensor 40 for detecting a shift position, a starter switch 41 and the position sensor 40.
Signal is input to the start control circuit 42. Start control circuit 4
2 is configured to output a drive signal to the starter motor 13 only when a starter signal is input when the shift position is N, and the vehicle jumps out by driving the starter in the state where it is shifted to the traveling position, and the starter is extremely It is designed to prevent use in escape. In addition, the starter switch 41 and an emergency escape switch 43 are separately provided, and the emergency escape switch 43 and the position sensor 40 are provided.
And the signal of the rotation sensor 29 is input to the emergency escape control circuit 44. The emergency escape control circuit 44 shifts to the first speed or the reverse speed when the engine is stopped when the shaft rotation speed is zero. When an emergency escape signal is input in this state, the emergency escape control circuit 44 judges the emergency escape of the engine stop and the rotating magnetic field advance circuit 31 Is configured to output an actuation signal to the.

Next, the operation of this embodiment will be described. First, when it is confirmed that the manual transmission 6 is in the N shift position and the starter switch 41 is turned on, the start control circuit 42 outputs a drive signal to the starter motor 13 to drive the starter motor 13 normally. Then, the engine 1 is cranked by the starter motor 13 via the flywheel 3 and the like, and the engine is started by self-destruction operation. Therefore, when the manual transmission 6 is shifted to the traveling position while operating the clutch 4, engine power is input to the transmission 6, and the transmission power is transmitted from the output shaft 7 to the drive wheels 11 to drive the vehicle.

When the vehicle is running, the auxiliary acceleration switch 28 is operated especially when the vehicle is starting or accelerating. Then,
A high voltage is applied from the battery 24 to the induction machine 2 by the discharge circuit 26.
1 and at the same time a predetermined advance frequency signal is output from the rotating magnetic field advance circuit 31 according to the drive torque.
To the rotor 21b of the induction machine 21
To produce a rotating magnetic field that is advanced with respect to. Therefore, the induction machine 21 temporarily operates as a powerful electric motor,
The drive system is effectively assisted by the flywheel 3 having a large inertial mass. Therefore, the auxiliary drive of the induction machine 21 is added to the engine power in an overlapping manner to improve the running performance of starting and accelerating, or the accelerator operation amount is reduced to reduce fuel consumption and exhaust gas.

On the other hand, when traveling downhill, the electric braking switch 27
Is operated, the rotating magnetic field delay circuit 30
A predetermined delay frequency signal is input to the inverter circuit 23, and a rotating magnetic field delayed with respect to the rotor portion 21b is generated in the stator portion 21a of the induction machine 21. For this reason, the induction machine 21 operates as a powerful generator, the high-speed drive system is forcibly braked by the flywheel 3, the effect of engine braking is improved, and the vehicle is decelerated safely. At this time, the induction machine 21 generates power by the mechanical energy of the drive system,
This electric energy is converted into direct current by the inverter circuit 23, the voltage is adjusted by the charging circuit 25, and the battery 24 is charged. In this way, the above-described auxiliary drive can be semipermanently repeated by energy regeneration of the drive system during electric braking.

Further, when the engine 1 is stopped due to a trouble of the engine 1, lack of gas, etc. in a state where the vehicle enters a railroad crossing, for example, the manual transmission 6 is shifted to a traveling position of a low speed stage. Emergency escape switch 43 in the state
To operate. Then, the emergency escape control circuit 44 determines that the engine is in an emergency escape state, and an operation signal is input to the rotating magnetic field advance circuit 31 to advance and control the rotating magnetic field of the induction machine 21. In this case, since the vehicle is stopped, the induction machine 21 operates as a stronger electric motor than described above, the rotational power of the induction machine 21 is input to the manual transmission 6, and
Due to the shift to the high speed or the reverse speed, this large shift power at the low speed stage is transmitted from the output shaft 7 to the drive wheels 11.
Therefore, a much larger driving force is generated in the drive wheels 11 than in the case where a starter motor or the like is used, and this makes it possible to move even a large-sized vehicle carrying luggage. For this reason, the vehicle can start moving strongly and reliably, and can quickly escape from a dangerous place such as a railroad crossing. The emergency escape switch 43 may be
Is operated or the shift is not normally performed during an emergency escape, the emergency escape control circuit 44 cancels.

Referring to FIG. 2, the case of a drive system equipped with an automatic transmission with a torque converter will be described. In this example,
The crankshaft 2 of the engine 1 is connected to the torque converter 50, the input shaft 51 from the torque converter 50 is connected to the automatic transmission 52, and the output shaft 53 and the subsequent parts thereof are configured in the same manner as described above. Here, under the condition that the engine 1 is stopped or rotates at an extremely low speed, the hydraulic pressure is insufficient and the torque converter 50 and the automatic transmission 52 are in a state in which power cannot be transmitted. Therefore, in consideration of accurately transmitting power to the drive wheels 11 at the time of emergency escape, the induction machine 21 of the retarder device 20 is considered.
Is mounted on the transmission output side, for example, between the output shaft 53 and the case 54. In this case, the emergency escape control system includes an emergency escape control circuit 44, an emergency escape switch 43, an ignition switch 55, and a hydraulic pressure sensor 5 for the hydraulic system of the automatic transmission 52.
The signal of 6 is inputted and judged.

Therefore, in this embodiment, the torque is amplified by the torque converter 50 and the automatically shifted power is transmitted to drive the vehicle, and at this time, the induction machine 21 on the output side of the automatic transmission 52.
Is assisted by and is effectively electrically braked without being affected by the slip of the torque converter 50.
Further, when an emergency escape switch signal is input while the engine is stopped by the ignition switch 55 and the automatic transmission cannot be operated by the hydraulic pressure sensor 56, the driving wheel 11 after the output shaft 53 is directly driven by the rotational power of the induction machine 21. The vehicle is driven and the vehicle travels in the same manner as described above, and an emergency escape occurs.

Although the embodiments of the present invention have been described above, the induction machine can be mounted at various positions of the drive system, and the same can be applied to that case.

[0020]

As described above, according to the present invention,
In vehicles with a retarder, the retarder device is configured to move the vehicle with the rotational power of the induction machine when the engine is stopped, in addition to the original electric braking and auxiliary acceleration. It is much more powerful than the one used, and it is possible to make an emergency escape, and its effect is very large in terms of accident prevention. Since it is not necessary to use the starter motor in case of emergency escape, durability of the starter motor and the like can be improved. When an induction machine is installed on the input side of a drive system that uses a manual transmission, it is configured on the assumption that the engine will be stopped and that the gear will shift to a lower speed when an emergency escape occurs. With this, the vehicle can be moved accurately, and the driving force increases due to the shift speed, which is preferable. In the drive system of the automatic transmission with a torque converter, the induction machine is mounted on the output side, so that the vehicle can be reliably moved even when the torque converter and the automatic transmission are inoperable.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a control device for a vehicle with a retarder according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment in which the present invention is applied to a drive system of an automatic transmission with a torque converter.

[Explanation of symbols]

 1 Engine 3 Flywheel 4 Clutch 6 Manual Transmission 11 Drive Wheel 20 Retarder Device 21 Induction Machine 22 Electric Control Device 23 Inverter Circuit 30 Rotating Magnetic Field Delay Circuit 31 Rotating Magnetic Field Advance Circuit 43 Emergency Escape Switch 44 Emergency Escape Control Circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical indication location H02P 7/63 302 D 8209-5H (72) Inventor Takashi Kofuji 3 Hinodai, Hino City, Tokyo 1-chome 1 Hino Motor Co., Ltd.

Claims (3)

[Claims] 1. An engine drive system is equipped with an induction machine capable of generating and electrically driving, and a stator portion of the induction machine is connected to a battery for regenerating generated power via an inverter circuit.
In a control device for a vehicle with a retarder in which a rotating magnetic field delay circuit for electric braking and an auxiliary driving rotating magnetic field advance circuit are connected to an inverter circuit, an emergency escape switch and an emergency escape switch in a state in which power can be transmitted to the wheels when the engine is stopped A control device for a vehicle with a retarder, comprising: an emergency escape control circuit that outputs an operation signal to a rotating magnetic field advance circuit when a signal is input. 2. When the drive system of the engine is equipped with a manual transmission, the starter is driven only at the N position of the manual transmission, and the emergency escape control circuit shifts the manual transmission to a low speed stage when the engine is stopped. The control device for a vehicle with a retarder according to claim 1, wherein the control signal is output when an emergency escape signal is input in a closed state. 3. The retarder-equipped vehicle according to claim 1, wherein when the drive system of the engine includes a torque converter and an automatic transmission, the induction machine is mounted on the output side of the automatic transmission. Control device.