JP4930835B2 - Engine start control device - Google Patents

Description

  The present invention relates to an engine start control device, and more particularly to an engine start control device configured such that a plurality of control devices communicate with each other while functions are distributed to the plurality of control devices.

  A vehicle includes a plurality of control devices (ECUs) that handle information related to power supply control or engine control, and control area communication means (CAN) that allows information from each of these control devices to be transmitted and received mutually. And an engine start control device for performing various controls including engine start.

Conventionally, in a vehicle engine starting device, the confirmation result of the code authenticating means is acquired at a timing earlier than the engine starting instruction is given by the operation switch, and the authentication code and the confirmation code are in a predetermined correspondence relationship in advance. There is one that checks whether or not there is a time and shortens the time from the pressing operation of the engine start switch to the engine start.
In the push start system, the mobile device and the vehicle communication device authenticate by communication, and when the authentication is established, the push switch is pressed to operate the starter motor and start the engine. There is a type that matches the startability by changing the control value.
Some engine start control devices and methods include an IGN power relay control drive line that does not go through the CPU between the smart entry control unit and the IGN power relay, thereby providing redundancy.
Some engine start control devices independently perform engine start / stop operation and steering lock locking operation.
JP 2005-125929 A JP 2005-248859 A JP 2006-2714 A JP 2003-254113 A

Conventionally, in a vehicle system that controls a vehicle power supply (accessory: ACC, ignition: IG) and a starter motor based on an input signal of a switch operation, the vehicle has a switch input and a switch that are required by the driver. A function of collating a portable device or a transponder for determining whether or not the operation is an operation of a regular user (user), and a power source when the collation result is determined to be a regular user A vehicle control device (ECU) having an output function for driving / stopping the starter motor according to an input, a switch input, and other conditions for determining whether or not the output to be transited and the power source has been transited, and an engine rotation sensor, etc. The operation of the vehicle control device can be performed by comparing the function to determine whether the starting state is optimal and the vehicle control device. Determination to the engine fuel injection whether the operation or not by the user of the regulations, and an engine control unit (ECU) having a function of determining whether to permit ignition.
In such a vehicle system, when it is determined that the switch input by the authorized user is made by the collation, the vehicle control device changes the power source from the OFF state to a state in which the vehicle device can be controlled, and determines the transition state based on the input signal. ing.
The engine control device can be controlled only when the power source is ignition (IG). When power is supplied by the vehicle control device, the engine control device collates with the vehicle control device to determine whether the operation is performed by an authorized user. If the collation results match, fuel injection and ignition are permitted.
However, since the input for confirming the power supply transition of the vehicle control device and the power supply IG signal to the engine control device are overcurrent protected by different fuses, respectively, when the fuse of the vehicle control device is blown, Since there is an abnormality in the power supply transition and it is determined that the engine control device is in an inoperable state, there is a problem that the engine control device cannot be checked and the starter motor cannot be controlled.

  Therefore, an object of the present invention is to construct a system that can start an engine under a specific condition even when a failure (fuse blowing) in a power supply circuit is being recognized (during determination), and other control. It is an object of the present invention to provide an engine start control device that enables specific control such as engine start by a control area communication means even if there is an inconvenience of the device, thereby improving the commercial value.

The present invention includes a plurality of control devices that handle information related to power control or engine control, and control area communication means on which information from each of these control devices can be transmitted and received mutually, In the engine start control device that performs various controls including engine start , one control unit that is one of the plurality of control units and is related to power control of the plurality of control units and is directly connected to a power source The control device and other control devices related to engine control among the plurality of control devices each have detection means relating to the input state of the power supply, and each of these detection means is connected to the power supply through the fuse from the power supply. mutual control device is provided connected to a parallel, the one of the control devices, the one to the sensing means for the input state of the power supply the one of the control device has When the control device not input should associated with the input state of the power supply of the other control units to be connected in parallel, the other of power to the other control device can be obtained by the communication when being supplied It has a holding function that changes the power supply state based on information from the control device and holds it in the power supply state, and operates the holding function to start the engine after operating the holding function. .

  According to the engine start control device of the present invention, in a system configured such that a plurality of control devices communicate with each other while functions are distributed to the plurality of control devices, the engine start control is performed due to the disadvantage of one control device. It is possible to reduce inconvenience that the entire system becomes inoperable so that it becomes impossible.

It is an object of the present invention to reduce the inconvenience that the entire system becomes inoperable due to the inconvenience of one control device, and the one control device is in an input state of the power source of the one control device. When there is no input to the detection means related to the above, it has a holding function for updating and holding the power state based on information from other control devices obtained by communication, and after operating this holding function, the engine It is realized by operating to start.
Hereinafter, embodiments of the present invention will be described in detail and specifically with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention. In FIG. 1, 1 is an engine mounted on a vehicle, and 2 is an engine start control device. The engine start control device 2 is of a push switch type, and includes a vehicle control device (ECU) 3 that is one control device as a plurality of control devices (ECU) that handle information related to power control or engine control, and Engine control device (ECM) 4, which is another control device, and control area communication means (CAN, etc.) on which information from these vehicle control device 3 and engine control device 4 can be sent and received mutually 5 and performs various controls including starting of the engine 1.
The vehicle control device 3 includes vehicle detection means (IG state transition signal) 7 as detection means regarding the input state of the power source (battery) 6. The engine control device 4 has engine detection means (IG signal) 8 as detection means regarding the input state of the power supply 6. The vehicle detection means 7 and the engine detection means 8 are provided so as to be connected to each other in parallel to the power supply 6 from the power supply 6 via the vehicle fuse 9 and the engine fuse 10.

The engine start control device 2 is provided with a portable device (or transponder) 11 capable of wireless communication.
The vehicle control device 3 includes a communication unit 12 that can communicate with the portable device 11, and is connected to a power source (starting) switch 13, and is connected to a wireless external communication function, a wired external communication function, and an input of the power source 6. It has the vehicle detection means 7 regarding a state, and the starting function of the engine 1. FIG.
The engine control device 4 is connected to the engine 1, is connected to an engine rotation sensor 14 that is a detection means relating to the state of the engine 1, and is connected to a brake switch 15, a wired external communication function, and the power source 6. Engine detection means 8 relating to the input state.
The vehicle control device 3 includes an IG power supply transition output unit 17 connected to the first relay 16 connected to the vehicle fuse 9 and the engine fuse 10, and a starter motor control output unit connected to the second relay 19 connected to the starter motor 18. 20 is provided.
The engine start control device 2 is connected to the vehicle detection means 7 of the vehicle control device 3 and the engine detection means 8 of the engine control device 4 from the power source 6 via the vehicle fuse 9 and the engine fuse 10 and to each other with respect to the power source 6. Connecting in parallel, power can be supplied at power supply transition.

  The vehicle control device 3, which is one control device, from the engine control device 4, which is another control device obtained by communication, when there is no input to the vehicle detection means 7 regarding the input state of the power supply 6 of the vehicle control device 3. The holding function unit 21 having a holding function for updating and holding the power supply state based on the information is provided, and after the holding function is operated, the engine 1 is started. In this case, the information from the engine control device 4 to the vehicle control device 3 is communication of control data (specific communication) communicated periodically. Further, the vehicle control device 3 operates the holding function for changing the state of the power supply 6, and then collates information with the collation unit 22 through communication with the engine control device 4, and starts the engine from the engine control device 4. A determination signal and a starter motor drive request signal are input.

  In addition, the vehicle control device 3 performs power supply transition when it recognizes that the user is an authorized user through external communication with the portable device 11 and detects that the power switch 13 is turned on. On the other hand, there is no input to the vehicle detection means 7 regarding the input state of the power source 6 and a periodic communication signal is received via the control area communication means 5 provided between the vehicle control device 3 and the engine control device 4. If it is, the holding function is operated, and then the start function of the engine 1 is operated when a start request is received from the engine control device 4 via the control area communication means 5.

Next, the operation of the first embodiment will be described.
The vehicle control device 3 recognizes the operation of the authorized user when the power switch 13 is turned on and is confirmed to be an authorized user by collation with the portable device 11, and the power supply transition is performed. To implement.
After the power supply transition, it is determined whether or not a normal transition has been made based on the transition state signal.
When the vehicle fuse 9 of the vehicle control device 3 is blown, if the specific signal (periodic signal) from the engine control device 4 can be received, the engine control device 4 is in a controllable state, It is determined that the vehicle fuse 9 is blown, and the output for controlling the power supply 6 is held, that is, the power supply transition state is held.
Then, the vehicle control device 3 collates with the engine control device 4, and at the same time, executes a specified reply to the collation from the engine control device 4, and at the same time, the user's switch operation requests engine start. If the engine start is requested, a request signal is transmitted.
The engine control device 4 confirms the signal from the vehicle control device 3 and the condition that the brake is depressed from the brake switch 15 and transmits a starter motor drive request signal to the vehicle control device 3.
The vehicle control device 3 that has received this starter drive request signal drives the starter motor 18 in response to the starter motor drive request signal from the engine control device 4. At this time, the engine control device 4 determines the engine start state. Then, the vehicle control device 3 performs drive / stop control on the starter motor 18, that is, drives the starter motor 18 until it is requested to stop, thereby starting the engine 1.

As a result, in the first embodiment, the vehicle control device 3 which is one control device is obtained by communication when there is no input to the vehicle detection means 7 regarding the input state of the power source 6 of the vehicle control device 3. And a holding function unit 21 having a holding function for updating and holding the power supply state based on information from the engine control device 4, and starting the engine 1 after operating this holding function. To work.
As a result, in a system configured such that a plurality of control devices communicate with each other while functions are distributed to the plurality of control devices, the engine 1 cannot be started due to the disadvantage of one control device. Inconvenience that the entire system becomes inoperative can be reduced.

Information from the engine control device 4 to the vehicle control device (ECM) 3 is communication of control data that is periodically communicated. Further, the vehicle control device 3 operates the holding function for changing the state of the power supply 6, and then collates information with the collation unit 22 through communication with the engine control device 4, and starts the engine from the engine control device 4. A determination signal and a starter motor drive request signal are input.
Thereby, it is not necessary to prepare new wiring or the like for communication by making a determination based on a signal used in a normal operation, and an increase in the size of the control device or system can be avoided.

Further, the engine start control device 2 is provided with a portable device (or transponder) 11 capable of wireless communication. When the vehicle control device 3 recognizes that the user is an authorized user through external communication with the portable device 11 and detects that the power switch 13 is turned ON, When there is no input to the vehicle detection means 7 relating to the input state of the power supply 6 and a periodic communication signal is received via the control area communication means 5 provided between the vehicle control device 3 and the engine control device 4 First, the holding function is operated, and then the start function of the engine 1 is operated when a start request is received from the engine control device 4 via the control area communication means 5.
As a result, the start function of the engine 1 can be secured even if there is an inconvenience in shifting the start function from the engine control device 4 to another control device, and the power supply of the other control device is inconvenient. It is possible to simplify the power supply circuit for supplying power to the battery.

FIG. 2 shows a second embodiment of the present invention.
In the second embodiment, portions that perform the same functions as those of the first embodiment will be described with the same reference numerals.
The features of the second embodiment are as follows. That is, as shown in FIG. 2, the engine start control device 2 is of a key switch type.
The engine start control device 2 is provided with a portable device 11 capable of wireless communication.
The vehicle control device 3 includes a wireless external communication function, a wired external communication function, and two first vehicle detection means (IG) 7A and second vehicle detection means (ACC) 7B related to the input state of the power source 6. Provided.
The engine control device 4 is connected to an engine rotation sensor 14 which is a detection unit relating to the engine state, and is provided with a wired external communication function and an engine detection unit 8 relating to the input state of the power source (battery) 6.
The engine start control device 2 is provided with a power switch 31 that can switch a state in which the vehicle control device 3 and the engine control device 4 are connected to the power source 6.
The power supply switch 31 includes a power supply OFF mode (OFF) 31A, an accessory power supply mode (ACC) 31B that enables use of a specific control device, a power supply ON mode (IG) 31C that supplies power to all the control devices, an engine The power supply state can be switched to a start mode (ST) 31D for starting 1. An ACC fuse 32 is provided between the accessory power supply mode (ACC) 31B and the second vehicle detection means (ACC) 7B.
In the vehicle control device 3, the engine control device 4, and the power switch 31, in the accessory power supply mode (ACC), power is supplied to the vehicle control device 3 through the ACC fuse 32, which is a single fuse, and the power is turned on. In the mode (IG), electric power is supplied to the vehicle control device 3 and the engine control device 4 via the vehicle fuse 9 and the engine fuse 10, which are other fuses, and to the power source 6 so that the respective control devices are in parallel. In the start mode (ST), the starter motor 18 is connected so as to supply electric power.
In the vehicle control device 3, the two first and second detection means 7A and 7B are provided corresponding to the accessory power supply mode and the power ON mode, and these two first and second detection means 7A and 7B are provided. The detection status of is different.

According to the configuration of the second embodiment, when the power source 6 is switched by the power source changeover switch 31 and the ACC signal input before the ignition (IG) is ON, the vehicle control device 3 uses the specific engine control device 4. When the signal is received, it is determined that the vehicle fuse 9 is blown, and transmission of the vehicle control device 3 to be described later and holding of the power supply transition state can be performed. In this state, the vehicle control device 3 determines whether or not the operation is performed by a regular user by checking the portable device 11 (or transponder).
When the vehicle control device 3 receives a periodic communication signal via the control area communication means 5 provided between the vehicle control device 4 and the engine control device 4 , the vehicle control device 3 is normally used by external communication with the portable device 11. The control means communication means 5 provided between the vehicle control device 3 and the engine control device 4 when there is no input to the detection means relating to the input state of the power supply 6. When a periodic communication signal is received, a response based on the result of the portable device 11 (or transponder) that has already been executed or is being executed is transmitted in response to the verification request from the engine control device 4 . If it is determined that the vehicle fuse 9 is blown, the power supply transition state is maintained.
As a result, the start function of the engine 1 can be ensured even when the start function is transferred from the engine control device 4 to another control device and there is an inconvenience in the power supply transition of the other control device.

  In the present invention, in the vehicle control device that does not control the power supply, even if the power supply transition that can be controlled by the engine control device cannot be confirmed, it is possible to confirm the state in which other accessory power supplies have been transitioned and If the signal transmitted from the apparatus can be received, it is determined that the fuse is blown, and collation with the engine control apparatus can be performed, and the engine can be started.

  A holding function that updates and holds the power supply state based on information from another control device obtained by communication when there is no input to the detection unit related to the power supply input state of the one control device. In addition, the operation of starting the engine after operating the holding function can be applied to other controls.

It is a system configuration figure of an engine starting control device in the 1st example. It is a system configuration figure of an engine starting control device in the 2nd example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Engine starting control apparatus 3 Vehicle control apparatus 4 Engine control apparatus 5 Control area communication means 6 Power supply 7 Vehicle detection means 8 Engine detection means 9 Vehicle fuse 10 Engine fuse 11 Portable machine 13 Power switch 14 Engine rotation sensor 18 Starter motor 21 Holding Function Unit 22 Verification Unit

Claims (3)

  It has a plurality of control devices that handle information related to power control or engine control, and control area communication means on which information from each of these control devices can be transmitted or received, and start the engine An engine start control device that performs various controls including one control device that is one of the plurality of control devices, is involved in power control of the plurality of control devices and is directly connected to a power source, and the plurality of control devices. Other control devices related to engine control among the control devices of the above have detection means relating to the input state of the power supply, and each of these detection means is connected to the power supply from the power supply via a fuse and to each other. Are connected so as to be in parallel, and the one control device is connected to the detection means related to the input state of the power source of the one control device. When there is no input that should be related to the input state of the power supply of the other control device to be connected in a column, the power from the other control device obtained by communication when power is supplied to the other control device An engine start control device characterized by having a holding function for changing the power supply state based on information and holding it in a power supply state, and operating the holding function and then starting the engine .   The information from the other control device to the one control device is communication of control data that is periodically communicated, and the one control device operates the holding function and then the other control device. The engine start control device according to claim 1, wherein each other's information is collated by communicating with the engine.   A portable device capable of wireless communication is provided, and a power switch is connected to the one control device, a wireless external communication function, a wired external communication function constituting the control area communication means, and the power supply A detection means relating to the input state of the engine and a starting function of the engine, the detection means relating to the engine state is connected to the other control device, a wired external communication function, and a detection means relating to the input state of the power supply In the power supply transition, the detection means of the one control device and the detection means of the other control device are connected to the detection means of the other control device from the power source through the fuse and in parallel to the power source. Provided in the one control device is a power supply transition output unit that can supply power, a relay is interposed between the power supply and the fuse, and outputs a power supply transition output signal to the relay. When the one control device recognizes that the user is an authorized user through external communication with the portable device and detects that the power switch is ON, the power transition signal is output from the power transition output unit. In the meantime, there is no input to the detection means relating to the input state of the power supply, and a periodic communication signal is sent via the control area communication means provided between the one control device and the other control device. If it is received, the holding function is operated, and then the engine start function is operated when a start request is received from the other control device via the control area communication means. The engine start control device according to claim 2.

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