JP5977511B2 - Vehicle neutral lock release prevention control device - Google Patents

Description

  The present invention relates to a neutral lock release prevention control device for a vehicle.

  In general, in a vehicle such as a route bus, the transmission is switched using hydraulic pressure or compressed air pressure by operating a short change lever as a switch of an electric signal provided beside the driver's seat, A so-called finger shift is mounted to reduce the burden on the driver during shifting.

  With the strengthening of safety measures under the domestic road traffic law for route buses, the following two measures have become necessary for route buses manufactured and sold after 2012.

  One is that power must not be transmitted to the transmission when the passenger door is open, that is, the transmission must be locked in the neutral position, and the other is that the gear of the transmission is in, ie the transmission is When it is not in the neutral position, the passenger door must not be opened, and these two correspondences are called neutral locks.

  Both transmission control and door control are performed by an electronic control unit (ECU), which requires coordinated control. Therefore, when changes in specifications such as those described above are required, For example, the hardware of the transmission electronic control unit is significantly changed, for example, by changing its terminal position, and measures are taken to eliminate compatibility between old and new.

  The reason for this is, for example, as shown in FIG. 6, where A is an electronic control unit for transmission that is used in an old model vehicle 1 that does not support neutral lock, and is manufactured and sold for replenishment. If the transmission electronic control unit mass-produced for use in the new model vehicle 2 is B, if the transmission electronic control unit A can be used instead of the transmission electronic control unit B, The new model vehicle 2, which should lock the transmission in the neutral position when the entry / exit door is open and should not open the entry / exit door when the transmission is not in the neutral position, is not compatible with the neutral lock like the old model vehicle 1. By remodeling It is for thereby, than is measures to eliminate the old and new compatibility is performed for the purpose of preventing the modification as such neutral lock from being released.

  Although the invention related to the neutral lock as described above is not found in patent documents and non-patent documents, the general technical level of the device for switching the control specifications of the electronic control unit for transmission is described in, for example, a patent There is literature 1.

JP-A-8-61137

  However, as described above, if the transmission electronic control unit B, which is completely different from the transmission electronic control unit A in order to eliminate the compatibility between old and new, is newly manufactured, the parts cannot be shared, leading to an increase in cost. Had.

  In the device disclosed in Patent Document 1, the control specifications of the ECU are switched based on the connection status of the AT controller at the beginning of the control program, but no modification is considered. .

In view of such a situation, the present invention is intended to provide a neutral lock release prevention control device for a vehicle that can realize cost reduction by realizing common parts in old and new models.

The present invention is a new model vehicle in which a neutral lock is unlocked for vehicles that require a neutral lock to lock the transmission in the neutral position when the passenger door is open and prevent the passenger door from being opened when the transmission is not in the neutral position. Prevention control device,
The transmission electronic control unit that can be used for the old model vehicle not compatible with the neutral lock is additionally equipped with a new model vehicle identification terminal and a door electronic control unit connection terminal to which the door electronic control unit can be connected,
When the transmission electronic control unit is mounted on the new model vehicle, the door electronic control unit is connected to the door electronic control unit connection terminal via the CAN communication bus line for data transfer, The connected vehicle wire harness is connected to the new model vehicle identification terminal,
Recognizing whether the vehicle is a new or old model vehicle based on the presence or absence of reception of communication information from the door electronic control unit and the voltage level of the new model vehicle identification terminal, When it is recognized, or when it is recognized that there is an abnormality in the identification terminal for the new model vehicle, the neutral lock release prevention control device of the vehicle is configured to perform the neutral lock. is there.

  According to the above means, the following operation can be obtained.

When configured as described above, the transmission electronic control unit that can be used for an old model vehicle that does not support neutral locking is simply changed by adding an identification terminal for the new model vehicle and an electronic control unit connection terminal for the door. Thus, based on the presence / absence of reception of communication information from the door electronic control unit and the voltage level of the new model vehicle identification terminal, it is recognized whether the vehicle is a new model vehicle or a new model vehicle. The neutral lock is performed when it is recognized that there is an abnormality in the new model vehicle identification terminal.

  As a result, there is no need to manufacture a new transmission electronic control unit for the new model vehicle, which is completely different from the transmission electronic control unit used in the old model vehicle in order to eliminate the compatibility between the old and new models. And cost reduction can be achieved.

In the vehicle neutral lock release prevention control device, the door electronic control unit is connected to the door electronic control unit connection terminal to receive communication information from the door electronic control unit, and for the new model vehicle A first AND circuit that recognizes a new model vehicle when a vehicle wire harness connected to the ground is connected to the identification terminal and the voltage level of the new model vehicle identification terminal is “Lo”;
The door electronic control unit is not connected to the door electronic control unit connection terminal, communication information from the door electronic control unit is not received, and the vehicle wire harness is not connected to the new model vehicle identification terminal. A second AND circuit for recognizing an old model vehicle when the voltage level of the identification terminal for the new model vehicle is “Hi”;
When the door electronic control unit is connected to the door electronic control unit connection terminal, communication information is received from the door electronic control unit, and the voltage level of the new model vehicle identification terminal is “Hi”. A third logical product circuit that recognizes that there is an abnormality in the new model vehicle identification terminal and issues a warning.

  In this case, the door electronic control unit is connected to the door electronic control unit connection terminal, and the vehicle wire harness connected to the ground is connected to the new model vehicle identification terminal. Since the communication information from the electronic control unit for doors is received and the voltage level of the identification terminal for new model vehicle is “Lo”, the first AND circuit determines that the vehicle is a new model vehicle. It is recognized that the transmission is locked in the neutral position when the entrance door is opened, and the neutral lock is adapted to prevent the entrance door from being opened when the transmission is not in the neutral position.

  On the other hand, when the door electronic control unit is not connected to the door electronic control unit connection terminal and the vehicle wire harness is not connected to the new model vehicle identification terminal, Since the communication information from the electronic control unit is not received and the voltage level of the new model vehicle identification terminal is “Hi”, the second AND circuit recognizes the vehicle as an old model vehicle, Neutral lock is not supported.

  In addition, the door electronic control unit connection terminal is connected to the door electronic control unit, and the communication information from the door electronic control unit is received. Is "Hi", the third AND circuit recognizes that the vehicle is a new model vehicle, but the vehicle wire harness to be connected to the new model vehicle identification terminal has an abnormality such as disconnection. A neutral lock that locks the transmission to the neutral position when the passenger door is open and prevents the passenger door from being opened when the transmission is not in the neutral position. It becomes correspondence.

According to the neutral lock release prevention control device for a vehicle of the present invention, it may reduce costs to achieve common components in the old and new models.

It is a block diagram which shows the case where the electronic control unit for transmission in the Example of the neutral lock cancellation | release prevention control apparatus of the vehicle of this invention is mounted in a new model vehicle. It is a circuit diagram which shows the change point as the hardware of the electronic control unit for transmissions in the Example of the neutral lock cancellation | release prevention control apparatus of the vehicle of this invention. It is a block diagram which shows the case where the electronic control unit for transmission in the Example of the neutral lock cancellation | release prevention control apparatus of the vehicle of this invention is mounted in the old model vehicle. BRIEF DESCRIPTION OF THE DRAWINGS It is a logic circuit diagram which shows the outline | summary of the software added to the electronic control unit for transmission in the Example of the neutral lock cancellation | release prevention control apparatus of the vehicle of this invention, Comprising: (a) is a logic circuit for performing new model vehicle recognition FIG. 4B is a logic circuit diagram for performing old model vehicle recognition, and FIG. 5C is a logic circuit diagram for performing identification terminal disconnection diagnostic code recognition. It is a conceptual diagram which shows the state which can use the electronic control unit for transmission in the Example of the neutral lock cancellation | release prevention apparatus of the vehicle of this invention for both an old model vehicle and a new model vehicle. It is a conceptual diagram which shows the electronic control unit for transmission which lost the old and new compatibility used for each of an old model vehicle and a new model vehicle.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 5 show an embodiment of the neutral lock release prevention control device for a vehicle according to the present invention. The transmission electronic control unit A usable for the old model vehicle 1 not compatible with the neutral lock is identified with a new model vehicle identification. A terminal 3 and a door electronic control unit connection terminal 4 to which a door electronic control unit C can be connected are additionally provided. Whether or not communication information is received from the door electronic control unit C, and for the new model vehicle Based on the voltage level of the identification terminal 3, it is recognized whether the vehicle is an old or new model vehicle, and when the vehicle is recognized as a new model vehicle 2 compatible with neutral lock, or the new model vehicle identification terminal 3 When it is recognized that there is an abnormality, the neutral lock is performed.

  Here, a change lever sensor 5, a clutch stroke sensor 6, a clutch hydraulic switch 7, and a gear position sensor 8 are connected to the transmission electronic control unit A, and a first shift solenoid valve 9, a second shift solenoid valve are connected. 10, a first select solenoid valve 11, a second select solenoid valve 12, a finger shift lamp 13, and a finger shift buzzer 14 are connected. From the change lever sensor 5, the clutch stroke sensor 6, the clutch hydraulic switch 7, and the gear position sensor 8. These detection signals are input to the transmission electronic control unit A, and from the transmission electronic control unit A, the first shift solenoid valve 9, the second shift solenoid valve 10, the first select solenoid valve 11, and the second select solenoid Valve 12, finger shift lamp 1 Against the finger shift buzzer 14, the control signals are outputted.

The new model vehicle identification terminal 3 includes a resistor 15 and a diode 16 connected to a microcomputer (not shown) built in the transmission electronic control unit A, as shown in FIG. It is possible to provide additional equipment with only a simple change by newly adding a resistor 17 for supplying the battery voltage V _B between the diodes 16.

  The door electronic control unit connection terminal 4 can be additionally equipped with a simple change by simply adding a resistor (not shown) connected to the microcomputer. Then, as shown in FIG. 1, the door electronic control unit C is connected to the door electronic control unit connection terminal 4 via a CAN communication bus line (CAN: Controller Area Network) for data transfer. It is.

Further, as shown in FIG. 4A, the electronic control unit A for transmission is connected to the electronic control unit connection terminal 4 for the door and connected to the electronic control unit C for door from the electronic control unit C for door. When the communication information is received and the vehicle wire harness 18 (see FIG. 1) connected to the ground is connected to the new model vehicle identification terminal 3, the voltage level of the new model vehicle identification terminal 3 is “Lo” (for example, , 0 [V]), the first AND circuit 19 for recognizing the new model vehicle 2;
As shown in FIG. 4B, the door electronic control unit C is not connected to the door electronic control unit connection terminal 4, communication information from the door electronic control unit C is not received, and the new model vehicle If the vehicle wire harness 18 is not connected to the identification terminal 3 (see FIG. 3), and the voltage level of the identification terminal 3 for the new model vehicle is “Hi” (for example, 5 [V]), the vehicle is an old model vehicle. A second AND circuit 20 that recognizes
As shown in FIG. 4C, the door electronic control unit C is connected to the door electronic control unit connection terminal 4 to receive communication information from the door electronic control unit C, and for the new model vehicle. When the voltage level of the identification terminal 3 is “Hi”, it is recognized that there is an abnormality (for example, disconnection or the like) in the new model vehicle identification terminal 3 (identification terminal disconnection diagnosis code (self-diagnostic code) recognition) and an alarm is issued. And a third logical product circuit 21 which emits. These first logical product circuit 19, second logical product circuit 20, and third logical product circuit 21 can be supported by adding software to the transmission electronic control unit A.

  Next, the operation of the above embodiment will be described.

  As shown in FIG. 1, a door electronic control unit C is connected to the door electronic control unit connection terminal 4 via a CAN communication bus line for data transfer, and a ground connection is made to the new model vehicle identification terminal 3. When the vehicle wire harness 18 is connected, the communication information from the door electronic control unit C is received and the voltage level of the new model vehicle identification terminal 3 is “Lo”. Therefore, the first AND circuit 19 shown in FIG. 4 (a) recognizes that the vehicle is the new model vehicle 2, and locks the transmission in the neutral position when the entrance door is opened and when the transmission is not in the neutral position. It will be compatible with the neutral lock that prevents the passenger door from being opened.

  In contrast, as shown in FIG. 3, the door electronic control unit C is not connected to the door electronic control unit connection terminal 4, and the vehicle wire harness 18 is not connected to the new model vehicle identification terminal 3. In this state, the communication information from the door electronic control unit C is not received, and the voltage level of the new model vehicle identification terminal 3 becomes “Hi”. By the second AND circuit 20 shown, the vehicle is recognized as the old model vehicle 1 and is not compatible with the neutral lock.

  Further, as shown in FIG. 1, a door electronic control unit C is connected to the door electronic control unit connection terminal 4 via a CAN communication bus line for data transfer, and communication information from the door electronic control unit C is obtained. 4 is received, the voltage level of the new model vehicle identification terminal 3 becomes “Hi”, the vehicle is moved to the new model vehicle by the third AND circuit 21 shown in FIG. 2, the vehicle wire harness 18 to be connected to the new model vehicle identification terminal 3 is recognized as having an abnormality such as disconnection (identification terminal disconnection diagnostic code (self-diagnostic code) recognition) and an alarm is issued. While notifying the driver and maintenance personnel of the abnormality, the transmission is locked in the neutral position when the passenger door is opened and the transmission is not in the neutral position. The neutral lock corresponding that you do not want to open the passenger door.

  As a result, it is not necessary to newly manufacture a transmission electronic control unit B that is completely different from the transmission electronic control unit A in order to eliminate the compatibility between old and new, and it is possible to share parts and reduce costs. .

Thus, it may reduce costs to achieve common components in the old and new models.

  The neutral lock release prevention control device for a vehicle according to the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Old model vehicle 2 New model vehicle 3 New model vehicle identification terminal 4 Door electronic control unit connection terminal 18 Vehicle wire harness 19 First AND circuit 20 Second AND circuit 21 Third AND circuit A Transmission electronic control Unit C Electronic control unit for door

Claims (2)

In a new model vehicle, a neutral lock release prevention control device for vehicles that requires a neutral lock to lock the transmission in the neutral position when the entrance door is open and to prevent the entrance door from being opened when the transmission is not in the neutral position. There,
The transmission electronic control unit that can be used for the old model vehicle not compatible with the neutral lock is additionally equipped with a new model vehicle identification terminal and a door electronic control unit connection terminal to which the door electronic control unit can be connected,
When the transmission electronic control unit is mounted on the new model vehicle, the door electronic control unit is connected to the door electronic control unit connection terminal via the CAN communication bus line for data transfer, The connected vehicle wire harness is connected to the new model vehicle identification terminal,
Recognizing whether the vehicle is a new or old model vehicle based on the presence or absence of reception of communication information from the door electronic control unit and the voltage level of the new model vehicle identification terminal, A neutral lock release prevention control device for a vehicle, wherein the neutral lock release prevention control device is configured to perform the neutral lock when it is recognized or when it is recognized that the new model vehicle identification terminal is abnormal. The door electronic control unit is connected to the door electronic control unit connection terminal to receive communication information from the door electronic control unit, and the vehicle wire harness connected to the ground is connected to the new model vehicle identification terminal. A first AND circuit for recognizing a new model vehicle when the voltage level of the identification terminal for the new model vehicle is “Lo”;
The door electronic control unit is not connected to the door electronic control unit connection terminal, communication information from the door electronic control unit is not received, and the vehicle wire harness is not connected to the new model vehicle identification terminal. A second AND circuit for recognizing an old model vehicle when the voltage level of the identification terminal for the new model vehicle is “Hi”;
When the door electronic control unit is connected to the door electronic control unit connection terminal, communication information is received from the door electronic control unit, and the voltage level of the new model vehicle identification terminal is “Hi”. The vehicle neutral lock release prevention control device according to claim 1, further comprising: a third AND circuit that recognizes that the new model vehicle identification terminal is abnormal and issues an alarm.

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