JP2005121112A - Emergency shift controller of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emergency shift controller of a vehicle capable of prohibiting shifting operation when an emergency switch is turned on during the traveling of the vehicle. <P>SOLUTION: In this emergency shift controller of the vehicle, the shifting operation of the transmission mounted on the vehicle is performed by a shift actuator. The emergency shift controller comprises an emergency switch outputting emergency signals, an emergency shift stage instruction means instructing a specified shift stage in an emergency, a vehicle speed sensor detecting the traveling speed of the vehicle, and a control means. When the control means inputs the emergency signals, when the traveling speed of the vehicle is not zero (0), the control means prohibits the shift control irrespective of the instruction of the shift stage from the emergency shift stage instruction means, and when the traveling speed of the vehicle is zero (0), it controls the shift actuator so as to change the shift to the shift stage instructed by the emergency shift stage instruction means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an emergency shift control device for a vehicle in which a shift operation of a transmission mounted on the vehicle is performed by a shift actuator.

  In recent years, a vehicle equipped with an automatic transmission in which a shift operation of a transmission is performed by a shift actuator and the shift actuator is operated according to a shift map set in accordance with a vehicle speed and a depression amount of an accelerator pedal has been put into practical use. Yes. In addition, a vehicle has been put into practical use in which a shift actuator is controlled in accordance with a shift lever instruction of a shift lever, and a transmission is operated to shift to a gear stage instructed by the shift lever. These vehicles are speed-controlled by the control means based on signals from various detection sensors, but may become uncontrollable if the sensors fail.

In order to solve the above problem, an emergency control means, an emergency switch and an emergency gear position indicating means are provided, and when the emergency switch is turned on, the emergency control means operates, and the emergency control means When the sensors fail because the control means controls the shift actuator so as to shift to the indicated shift stage based on the instruction signal (neutral, first speed or reverse) from the emergency shift stage indicating means. However, measures have been proposed that allow the vehicle to travel at a minimum. (For example, refer to Patent Document 1.)
Japanese Examined Patent Publication No. 6-15310

  Thus, the technique disclosed in the above Japanese Patent Publication No. 6-15310 does not always have a sufficient response when the emergency switch is inadvertently turned on while the vehicle is running. In other words, if the emergency switch is inadvertently turned on while the vehicle is running, the emergency shift mode is set, and the emergency shift speed instruction means shifts to the current shift position (neutral, first speed or reverse). . As a result, when the vehicle is shifted to neutral while the vehicle is running, the driving force is suddenly released, so the shock is large. In addition, the transmission may be damaged when shifted backward. In order to solve such a problem, measures such as providing a cover for the emergency switch are taken, but it is not always perfect.

  The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is an emergency shift control of a vehicle in which a shift operation is prohibited when an emergency switch is turned on while the vehicle is running. To provide an apparatus.

In order to solve the above main technical problem, according to the present invention, in an emergency shift control device for a vehicle that performs a shift operation of a transmission mounted on a vehicle by a shift actuator,
An emergency switch that outputs an emergency signal;
An emergency shift speed indicating means for instructing a predetermined shift speed in an emergency;
A vehicle speed sensor for detecting the traveling speed of the vehicle;
The emergency switch, the emergency gear position instructing means, and a control means for controlling the speed change actuator based on a signal from a vehicle speed sensor,
When an emergency signal is input, the control means prohibits the shift control regardless of the shift speed instruction of the emergency shift speed instruction means when the travel speed of the vehicle is not zero (0), and the vehicle travel speed is zero. When (0), the shift actuator is controlled so as to shift to the shift stage instructed by the emergency shift stage instructing means.
An emergency shift control device for a vehicle is provided.

  The emergency gear stage instructing means is configured to instruct neutral, a predetermined forward speed and a reverse speed, and the control means has the emergency gear speed instructing means first when the vehicle traveling speed is zero (0). It is desirable to prohibit the shift control when neutral is not instructed.

  According to the present invention, when an emergency signal is input, if the vehicle traveling speed is not zero (0), the shift control is prohibited regardless of the shift stage instruction of the emergency shift stage instruction means. A shift shock can be prevented.

  Hereinafter, a preferred embodiment of an emergency shift control apparatus for a vehicle constructed according to the present invention will be described in more detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram of an emergency shift control device for a vehicle constructed according to the present invention. The vehicle having the illustrated emergency shift control device includes an engine 2, a fluid coupling 3 that is transmission-coupled to the engine 2, and a friction clutch 4 that is transmission-coupled to the fluid coupling 3 to disconnect / connect power transmission. And a drive device in which a parallel shaft gear type transmission 5 connected in transmission with the friction clutch 4 is arranged in series. The engine 2 is a diesel engine in the illustrated embodiment, and includes a starter motor 61 and a fuel injection device 62. The fluid coupling 3 can use a fluid coupling or a torque converter. The friction clutch 4 is actuated by a clutch actuator 7. The transmission 5 is shifted by a shift actuator 8 including a select actuator and a shift actuator.

  The emergency shift control device for a vehicle in the illustrated embodiment includes a gear position sensor 9 (GPS) for detecting the shift position (gear-in position) of the transmission 5 and an engine rotation speed detection sensor for detecting the rotation speed of the engine 2. 10 (ERS), a vehicle speed sensor 11 (VVS) for detecting the traveling speed of the vehicle from the rotational speed of the output shaft of the transmission 5, an accelerator sensor 13 (APS) for detecting the amount of depression of the accelerator pedal 12, and the vehicle The first brake operation detecting means 15 (SW1) for detecting the operation of the brake pedal 14 of the service brake, that is, the operation state of the service brake, and the second for detecting the operation of the parking brake lever 16 of the vehicle, that is, the operation state of the parking brake. The brake operation detecting means 17 (SW2) is provided, and each of these sensors and detecting means is detected. Send a No. to the control means to be described later.

  In addition, the emergency shift control device for a vehicle in the illustrated embodiment includes a shift instruction means 18 that outputs an instruction signal such as a gear position of the transmission 5. This shift instruction means 18 (SL) is disposed in the cab of the vehicle, and is driven by a shift lever 180 (SL) (automatic shift) position (D), upshift position (SU), downshift position (SD), Each position such as a neutral position (N) and a reverse (reverse) position (R) can be indicated, and the instruction signal is sent to the control means described later. The shift lever 180 (SL) can be held at the drive (automatic shift) position (D), the neutral position (N), and the reverse (reverse) position (R). If the hand is released after operating to the SU and shift down position (SD), it returns to the drive (automatic shift) position (D). Further, the emergency shift control device for a vehicle in the illustrated embodiment includes an emergency switch 19 (SW3) and an emergency shift speed instruction means 20 (ESM) disposed in the cab. The emergency switch 19 (SW3) is actuated by the driver when various sensors fail and becomes uncontrollable, and sends an emergency signal to the control means described later. Further, the emergency gear position instructing means 20 (ESM) can instruct neutral (N) and a first forward speed (1st) and a reverse speed (R) which are predetermined forward speeds.

  The emergency shift control device for a vehicle in the illustrated embodiment includes a control means 100. The control means 100 is constituted by a microcomputer, and includes a central processing unit (CPU) 101 that performs arithmetic processing according to a control program, a read-only memory (ROM) 102 that stores a control program, a shift map described later, and the like, and a calculation result. And the like, a random access memory (RAM) 103 capable of reading and writing, and an input interface 104 and an output interface 105 are provided. The input interface 104 of the control means 100 configured as described above includes the gear position sensor 9 (GPS), the engine rotation speed detection sensor 10 (ERS), the vehicle speed sensor 11 (VVS), the accelerator sensor 13 (APS), the first 1 brake operation detection means 15 (SW1), second brake operation detection means 17 (SW2), shift instruction means 18, emergency switch 19 (SW3), emergency gear position instruction means 20 (ESM), key switch 60 A detection signal such as (SW4) is input. The output interface 105 outputs control signals to the starter motor 61, the fuel injection device 62, the clutch actuator 7, the speed change actuator 8, the emergency warning lamp 21 (WL), and the like. Note that a read only memory (ROM) 102 of the control means 100 stores a shift map (not shown) set based on the depression amount of the accelerator pedal 12 and the traveling speed of the vehicle.

The emergency shift control device for a vehicle in the illustrated embodiment is configured as described above, and the operation thereof will be described below.
The control means 100 controls the fuel injection amount of the fuel injection device 62 based on the detection signal from the accelerator sensor 12. Further, the control means 100 determines an optimum gear position based on a shift map stored in a read only memory (ROM) 102 based on detection signals from the accelerator sensor 13 and the vehicle speed sensor 11, and the clutch actuator 7 and A shift control signal is output to the shift actuator 8. The control means 100 is provided when the shift lever 180 (SL) of the shift instruction means 18 is in the neutral position (N) and the shift position from the gear position sensor 9 (GPS) is in the neutral position, and when the gear position sensor 9 (GPS ) And the first brake operation detection means 15 (SW1) or the second brake operation detection means 17 (SW2) detects the brake operation state at a gear-in position other than neutral. The motor 61 can be operated. Accordingly, when the shift instruction means 18, the gear position sensor 9 (GPS) and the first brake operation detection means 15 (SW1) or the second brake operation detection means 17 (SW2) are out of order, the starter motor 61 is operated. The engine 2 cannot be started. As described above, when the engine 2 cannot be started and the emergency switch 19 (SW3) is turned on, the control means 100 causes the key switch 60 (SW4) even if each of the sensors is out of order. The starter motor 61 can be operated based on the start signal from.

Next, the shift control when the emergency switch 19 (SW3) is turned on will be described with reference to the flowchart shown in FIG.
The control means 100 first checks in step S1 whether or not the emergency switch 19 (SW3) is turned on. If the emergency switch 19 (SW3) is not turned on in step S1, the control means 100 does not need to perform emergency control, and thus proceeds to step S2 to execute normal control.

  If the emergency switch 19 (SW3) is turned on in step S1, the control means 100 proceeds to step S3 to turn on the emergency warning lamp 21 (WL), and further proceeds to step S4 to detect the vehicle speed sensor 11 ( A detection signal from VVS) is input, and it is checked whether the running speed (V) of the vehicle is zero (0), that is, whether the vehicle is stopped. If the travel speed (V) of the vehicle is not zero (0) in step S4, the control means 100 determines that the vehicle is traveling, proceeds to step S5, prohibits shift control, and sets the current shift speed. maintain. Therefore, if the emergency switch 19 (SW3) is inadvertently turned on while the vehicle is traveling, the current gear position is maintained, and a shift shock due to unexpected shift control can be prevented.

  Next, the control means 100 proceeds to step S6 and confirms whether or not the emergency switch 19 (SW3) is turned on. If the emergency switch 19 (SW3) is not turned on in step S6, the control means 100 determines that the emergency switch 19 (SW3) has been turned off, and proceeds to step S6, where the emergency warning lamp 21 ( WL) is turned off, and the process proceeds to step S2 to return to normal control. On the other hand, if the emergency switch 19 (SW3) is turned on in step S6, the control means 100 returns to step S4.

  When the travel speed (V) of the vehicle is zero (0) in step S4, the control means 100 determines that the vehicle is stopped, and proceeds to step S8, where the emergency gear stage instruction means 20 ( It is checked whether ESM) indicates neutral (N). In step S8, when the emergency gear position instructing means 20 (ESM) does not instruct neutral (N) for the first time, the control means 100 proceeds to step S5 and prohibits the gear shift control, and changes the current gear position. maintain. This is because, for example, when the vehicle is moving forward when the vehicle stops, when the emergency switch 19 (SW3) is turned ON, the emergency shift speed instructing means 20 (ESM) instructs the reverse (R). This is because if the transmission is shifted to the reverse speed according to the above, it is dangerous for the driver to be unexpected. Therefore, when the emergency switch 19 (SW3) is turned on, the transmission is returned to the neutral position to select the first speed (1st) or reverse (R) at the driver's will.

  When the emergency gear position instructing means 20 (ESM) indicates neutral (N) in step S8, the control means 100 proceeds to step S9 and controls the clutch actuator so as to control the transmission 5 to shift to neutral. 7 and a shift control signal are output to the shift actuator 8.

  Next, the control means 100 proceeds to step S10 and checks whether or not the emergency shift speed instruction means 20 (ESM) indicates the first speed (1st). If the emergency gear position instructing means 20 (ESM) instructs the first speed (1st) in step S10, the control means 100 proceeds to step S11 to control the transmission of the transmission 5 to the first speed. A shift control signal is output to the shift actuator 8.

  If the emergency gear position instructing means 20 (ESM) does not instruct the first speed (1st) in step S10, the control means 100 proceeds to step S12 and the emergency gear speed instructing means 20 (ESM) reverses (R ) Is checked. If the emergency shift speed instructing means 20 (ESM) instructs reverse (R) in step S12, the control means 100 proceeds to step S13 and the clutch actuator 7 and the shift actuator 5 are controlled to shift to the reverse speed. A shift control signal is output to the shift actuator 8.

  If the emergency gear stage instructing means 20 (ESM) does not instruct reverse (R) in step S12, the control means 100 returns to step S8 and the emergency gear stage instructing means 20 (ESM) Steps S8 to S12 are repeatedly executed until first speed (1st) or reverse (R) is instructed.

1 is a block diagram of an emergency shift control device for a vehicle configured according to the present invention. FIG. The flowchart which shows the operation | movement procedure of the control means which comprises the emergency shift control apparatus of the vehicle shown in FIG.

Explanation of symbols

2: Engine 3: Fluid coupling 4: Friction latch 5: Transmission 7: Clutch actuator 8: Shift actuator 9: Gear position sensor (GPS)
10: Engine rotation speed detection sensor (ERS)
11: Vehicle speed sensor (VVS)
12: Acel pedal 13: Axel sensor (APS)
14: Brake pedal 15: First brake operation detecting means (SW1)
16: Parking brake lever 17: Second brake operation detection means (SW2)
18: Shift instruction means 180: Shift lever 180 (SL)
19: Emergency switch (SW3)
20: Emergency shift speed instruction means (ESM)
21: Emergency warning lamp (WL)
60: Key switch (SW4)
61: Starter motor 62: Fuel injection device 100: Control means

Claims (2)

In an emergency shift control device for a vehicle in which a shift operation of a transmission mounted on the vehicle is performed by a shift actuator,
An emergency switch that outputs an emergency signal;
An emergency shift speed indicating means for instructing a predetermined shift speed in an emergency;
A vehicle speed sensor for detecting the traveling speed of the vehicle;
The emergency switch, the emergency gear position instructing means, and a control means for controlling the speed change actuator based on a signal from a vehicle speed sensor,
When an emergency signal is input, the control means prohibits the shift control regardless of the speed of the emergency speed instruction means when the travel speed of the vehicle is not zero (0). The shift actuator is controlled so as to shift the gear to the gear stage designated by the emergency gear stage instructing means when is zero (0);
An emergency shift control device for a vehicle.   The emergency gear position instructing means is configured to instruct neutral and a predetermined forward speed and reverse speed, and the control means has the emergency gear speed instructing means when the vehicle traveling speed is zero (0). The emergency shift control device for a vehicle according to claim 1, wherein shift control is prohibited when neutral is not instructed first.

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