JP2010223153A - Engine-mounting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine-mounting machine capable of checking illegal operation of a mounted engine. <P>SOLUTION: A key switch 3 is linked to a warning means 4 and an engine starting circuit 5 via any ECU of an engine ECU 1a and a mounting machine ECU 2a. Engine type information stored in a storage means 2b of the mounting machine ECU 2a is stored in a storage means 1b of the engine ECU 1a. In engine starting operation by the key switch 3, when any ECU of both ECUs 1a and 2a determines that the respective engine type information stored in the respective storage means 1b and 2b of both ECUs 1a and 2a do not coincide, any ECU of both ECUs 1a and 2a does not start an engine 1, and enables the warning means 4 to warn to the effect that the engine is not to be started. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an engine-equipped machine, and more particularly to an engine-equipped machine that can prevent unauthorized operation of the installed engine.

2. Description of the Related Art Conventionally, an engine that includes an engine, an engine ECU that controls the engine, and an onboard machine ECU that controls an onboard machine on which the engine is mounted, can transmit and receive information between the engine ECU and the onboard machine ECU. There is a machine (Patent Document 1 etc.).
According to this type of engine-equipped machine, there is an advantage that the engine and the engine-equipped machine can be controlled by integrating the information of the installed machine ECU and the information of the engine ECU.

  However, in this type of engine-equipped machine, a plurality of engine output control maps for each engine type having different output control characteristics of engine output are stored in the storage means of the engine ECU, and the engine to be mounted in the storage means of the mounted machine ECU. Engine type information is stored, the engine ECU selects a corresponding engine type engine output control map from a plurality of engine output control maps based on the engine type information transmitted from the mounted machine ECU, and the engine ECU When engine output control is performed based on the output control map, a problem arises because there is no means for preventing unauthorized operation of the mounted engine.

Japanese Patent Laying-Open No. 2003-32524 (see FIGS. 8 to 11)

The above prior art has the following problems.
<Problem> Unauthorized operation of the onboard engine cannot be prevented.
If the engine type information stored in the storage means of the mounted machine ECU is illegally rewritten due to intentional or negligence during repair after the engine mounted machine is shipped, it is based on the engine output control map for the different engine type. And drive illegally.
In addition, after the engine-equipped machine is shipped, if the installed engine and the engine ECU are replaced with another engine and the engine ECU, even if the engine type of the replaced installed engine is not compatible with the engine-equipped machine, The mounted engine may be illegally operated based on the engine output control map selected based on the engine type information stored in the ECU.
In the above prior art, there is no means for preventing such an improper operation of the mounted engine, and this cannot be prevented.

  An object of the present invention is to provide an engine-equipped machine that can prevent unauthorized operation of the mounted engine.

Invention specific matters of the invention according to claim 1 are as follows.
As illustrated in FIG. 1, an engine (1), an engine ECU (1a) that controls the engine (1), and an on-board machine ECU (2) that controls an engine-mounted machine (2) on which the engine (1) is mounted. 2a), and an engine-equipped machine that can transmit and receive information between the engine ECU (1a) and the mounted machine ECU (2a),
As illustrated in FIG. 2 or FIG. 4, the storage means (1b) of the engine ECU (1a) stores a plurality of engine output control maps for different engine types having different output control characteristics of the engine output, and the mounted machine ECU ( The engine type information of the engine (1) to be mounted is stored in the storage means (2b) of 2a), and the engine ECU (1a) has a plurality of engines based on the engine type information transmitted from the mounted machine ECU (2a). When an engine output control map of a corresponding engine type is selected from the output control map and the engine ECU (1a) performs output control of the engine (1) based on the engine output control map,
As illustrated in FIG. 1, the key switch (3) is linked to the warning means (4) and the engine starting circuit (5) via one of the ECUs (1a) and (2a).
As shown in FIG. 1 to FIG. 3, or FIG. 1, FIG. 4, and FIG. 5, the storage means (1b) of the engine ECU (1a) is stored in the storage means (2b) of the mounted machine ECU (2a). The engine type information is stored, and the engine type information stored in the storage means (1b) and (2b) of the ECUs (1a) and (2a) does not match when the engine is operated by the key switch (3). If any of the ECUs (1a) and (2a) determines that the ECU (1a) and (2a) do not start the engine (1), the warning means An engine-equipped machine, characterized in that (4) issues a warning not to start the engine.

(Invention of Claim 1)
The invention according to claim 1 has the following effects.
<Problem> Unauthorized operation of the onboard engine can be prevented.
As shown in FIG. 1 to FIG. 3, or FIG. 1, FIG. 4, and FIG. 5, the storage means (1b) of the engine ECU (1a) is stored in the storage means (2b) of the mounted machine ECU (2a). The engine type information is stored, and the engine type information stored in the storage means (1b) and (2b) of the ECUs (1a) and (2a) does not match when the engine is operated by the key switch (3). If any of the ECUs (1a) and (2a) determines that the ECU (1a) and (2a) do not start the engine (1), the warning means Since the warning that the engine is not started is performed in (4), unauthorized operation of the mounted engine can be prevented.
That is, when the engine type information stored in the storage means (2b) of the mounted machine ECU (2a) is illegally rewritten intentionally or due to negligence during repair after the engine mounted machine (2) is shipped, the key switch At the time of engine start operation by (3), the engine type information stored in the storage means (1b) and (2b) of both the ECUs (1a) and (2a) does not match, so the engine (1) does not start, The warning means (4) gives a warning that the engine is not started, and the onboard engine (1) is prevented from operating improperly.
In addition, after the engine-mounted machine (2) is shipped, the mounted engine and its engine ECU are replaced with another engine (1) and the engine ECU (1a), and the engine type of the mounted engine (1) is replaced. If the engine-equipped machine (2) is not suitable, the engine type information stored in the storage means (1b) and (2b) of the ECUs (1a) and (2a) at the time of engine start operation by the key switch (3) Since they do not match, the engine (1) is not started, and a warning that the engine is not started is issued by the warning means (4), and the onboard engine (1) is prevented from being operated improperly.

(Invention of Claim 2)
The invention according to claim 2 has the following effect in addition to the effect of the invention according to claim 1.
<Effect> Unauthorized operation of the mounted engine can be prevented when an engine of the same engine type with different adjustment is replaced.
As illustrated in FIGS. 2 and 3, the storage means (1b) and (2b) of both the ECUs (1a) and (2a) store the machine identification information of the machine mounted machine (2), and the key switch When the engine start operation by (3), the mounted machine individual identification information stored in the storage means (1b) and (2b) of the ECUs (1a) and (2a) does not match. ) If any ECU of (2a) makes a decision, either of the ECUs (1a) and (2a) does not start the engine (1) and does not start the engine to the warning means (4). Since the warning to this effect is performed, it is possible to prevent the onboard engine from being operated improperly when the same engine type engine with different adjustment is replaced.
Since the engine-equipped machines (2) are shipped after adjusting the maximum output limit and maximum torque limit individually, the engine (1) of each engine-equipped machine (2) is adjusted differently even if the engine model is the same. If the engine (1) of one engine-equipped machine is replaced with another engine-equipped machine (2), a problem occurs. For this reason, it is necessary to prevent this as unauthorized driving.

(Invention of Claim 3)
The invention according to claim 3 has the following effect in addition to the effect of the invention according to claim 1 or claim 2.
<Effect> Unauthorized operation of the mounted engine when only the engine is replaced while leaving the engine ECU can be prevented.
As shown in FIG. 2, FIG. 3 or FIG. 4 and FIG. 5, the storage means (1b) of the engine ECU (1a) stores the engine individual identification information of the engine (1) and is attached to the engine (1). The engine identification information held in the engine tag (6) is stored in the engine tag (6), and the engine identification information held in the engine tag (6) at the time of engine start operation by the key switch (3) is stored in either ECU (1a) (2a). The fact that the engine individual identification information stored in the storage means (1b) of the engine ECU (1a) and stored in the engine ECU (1a) does not match the engine individual identification information held in the engine tag (6) If any one of the ECUs (1a) and (2a) determines, the ECU (1) does not start the engine (1) and the warning means (4) Warning that will not start Because it was Unishi, it is possible to prevent unauthorized operation of mounting the engine in the case where reloaded only engine (1) leaving the engine ECU (1a).

(Invention of Claim 4)
The invention according to claim 4 has the following effect in addition to the effect of the invention according to claim 1.
<Effect> Unauthorized operation of the mounted engine can be prevented when an engine of the same engine type with different adjustment is replaced.
As illustrated in FIG. 4 and FIG. 5, the engine individual identification information of the engine (1) is stored in the storage means (1b) (2b) of both the ECUs (1a), (2a), and the key switch (3) The ECUs (1a), (2a) indicate that the engine individual identification information stored in the storage means (1b), (2b) of the ECUs (1a), (2a) did not match during the engine start operation by If any of the ECUs determines, the warning means (4) will not start the engine without any of the ECUs (1a) and (2a) starting the engine (1). Since it was made to carry out, the illegal operation | movement of the mounted engine at the time of replacing the engine of the same engine type from which adjustment is different can be prevented.
Since the engine-equipped machines (2) are shipped after adjusting the maximum output limit and maximum torque limit individually, the engine (1) of each engine-equipped machine (2) is adjusted differently even if the engine model is the same. Therefore, if the engine (1) of a certain engine-equipped machine is replaced with another engine-equipped machine (2), a problem occurs. For this reason, it is necessary to prevent this as unauthorized driving.

(Invention according to claim 5)
The invention according to claim 5 has the following effect in addition to the effect of the invention according to claim 4.
<Effect> Unauthorized operation of the mounted engine when only the engine is replaced while leaving the engine ECU can be prevented.
As shown in FIG. 4 and FIG. 5, the engine tag (6) attached to the engine (1) has the engine individual identification information, and the engine tag (6) has the engine start operation by the key switch (3). The engine identification information thus read is read into one of the ECUs (1a) and (2a) and stored in the engine identification information stored in the storage means (1b) of the engine ECU (1a) and the engine tag (6). If any of the ECUs (1a) and (2a) determines that the engine individual identification information does not match, the ECU of either of the ECUs (1a) and (2a) Since the warning means (4) does not start the engine (1) but warns that the engine is not started, the engine ECU (1a) is left and only the engine (1) is replaced. Prevent unauthorized operation of onboard engine can do.

It is a mimetic diagram explaining an engine loading machine concerning a 1st embodiment of the present invention. It is a figure explaining the storage information of each storage means of the engine ECU of the engine mounting machine and the mounting machine ECU according to the first embodiment of the present invention, and possession information of the engine tag. It is a flowchart at the time of engine starting operation of the engine mounting machine which concerns on 1st Embodiment of this invention. It is a figure explaining the storage information of each storage means of the engine ECU of the engine mounting machine which concerns on 2nd Embodiment of this invention, and the mounting machine ECU, and the possession information of an engine tag. It is a flowchart at the time of engine starting operation of the engine mounting machine which concerns on 2nd Embodiment of this invention.

  1 to 3 are diagrams illustrating an engine-equipped machine according to the first embodiment of the present invention, and FIGS. 4 and 5 are diagrams illustrating an engine-equipped machine according to a second embodiment of the present invention. In the embodiment, an agricultural tractor will be described.

The outline of this agricultural tractor is as follows.
As shown in FIG. 1, an engine (1), an engine ECU (1a) for controlling the engine (1), and an on-board machine ECU (2a) for controlling an engine-mounted machine (2) on which the engine (1) is mounted. ) So that information can be transmitted and received between the engine ECU (1a) and the mounted machine ECU (2a).
The engine ECU (1a) and the onboard machine ECU (2a) are linked by a communication line (7). This communication line (7) is a CAN communication bus. The CAN communication bus is a communication line for performing data communication according to a CAN (controller area network) protocol. ECU means an electronic control unit.

  The engine ECU (1a) is attached to the engine (1), and the mounted machine ECU (2a) is attached to a place other than the engine (1) of the agricultural tractor that is the engine-mounted machine (2) on which the engine (1) is mounted. Each ECU (1a) (2a) has a CPU (central processing unit), EEPROM (electrically extinguished / programmable read-only memory), flash memory, RAM (random access memory), CAN controller, input interface, The output interface is assembled.

As shown in FIG. 2, the storage means (1b) of the engine ECU (1a) stores a plurality of engine output control maps for each engine type having different output control characteristics of the engine output, and the storage of the mounted machine ECU (2a). The engine type information of the engine (1) to be mounted on the means (2b) is stored, and based on the engine type information transmitted from the mounted machine ECU (2a), the engine ECU (1a) can store a plurality of engine output control maps. A corresponding engine type engine output control map is selected, and the engine ECU (1a) controls the output of the engine (1) based on the engine output control map. Both storage means (1b) and (2b) of both ECUs (1a) and (2a) are composed of flash memories.
There are twelve types of engine types A to L, and output control characteristics such as maximum output and maximum torque are different for each engine type. One engine ECU (1a) is used for all engine types.

As shown in FIG. 1, the key switch (3) is linked to the warning means (4) and the engine starting circuit (5) via the engine ECU (1a). The engine starting circuit (5) is connected to the starter motor (8) of the engine (1).
As shown in FIG. 2, the engine type information stored in the storage means (2b) of the mounted machine ECU (2a) is stored in the storage means (1b) of the engine ECU (1a).
The storage means (1b) and (2b) of both ECUs (1a) and (2a) store the machine identification information of the engine mounted machine (2). The mounted machine individual identification information is a manufacturing number of the agricultural tractor.
The engine individual identification information of the engine (1) is stored in the storage means (1b) of the engine ECU (1a), and the engine individual identification information is held in the engine tag (6) attached to the engine (1). At the time of engine start operation according to 3), the engine individual identification information held in the engine tag (6) is read into the engine ECU (1a). The engine individual identification information is a manufacturing number of the mounted engine (1).

The warning means (4) shown in FIG. 1 includes an electric light display unit and an audio display unit.
The engine tag (6) is an IC tag, and the engine individual identification information stored in the IC tag is read by a tag reader (1c) provided in the engine ECU (1a). An IC tag is one in which an IC chip and a small antenna are embedded and information stored therein is read by a tag reader by radio waves without being touched directly. The engine tag (6) is not limited to an IC tag, and may be a tag displaying a bar code or a matrix type two-dimensional code. In this case, the tag reader (1c) is kept in contact with the engine tag (6).

The processing flow by the engine ECU at the time of engine start is as follows.
As shown in FIG. 3, in step (S1), it is determined whether or not an engine start operation has been performed by the key switch (3). If the determination in step (S1) is affirmative, that is, if the engine ECU (1a) determines that the engine start operation by the key switch (3) has been performed, both ECUs (1a) ( It is determined whether or not the engine type information stored in the storage means (1b) and (2b) of 2a is the same.

  If the determination in step (S2) is affirmative, that is, if the engine type information stored in the storage means (1b) and (2b) of both ECUs (1a) and (2a) matches, the engine ECU (1a ) Is determined, it is determined in step (S3) whether or not the mounted machine individual identification information stored in the storage means (1b) (2b) of both ECUs (1a) (2a) matches. .

  If the determination in step (S3) is affirmative, that is, if the mounted machine individual identification information stored in the storage means (1b) and (2b) of both ECUs (1a) and (2a) matches, the engine ECU ( If determined by 1a), the engine individual identification information stored in the storage means (1b) of the engine ECU (1a) in step (S4) matches the engine individual identification information held in the engine tag (6). It is determined whether or not.

  If the determination in step (S4) is affirmative, that is, the engine individual identification information stored in the storage means (1b) of the engine ECU (1a) and the engine individual identification information held in the engine tag (6) are If the engine ECU (1a) determines that they match, the engine ECU (1a) starts the engine (1) in step (S5).

In the next case, in step (S6), the engine ECU (1a) causes the warning means (4) to issue a warning not to start the engine without starting the engine (1).
If the determination in step (S2) is negative, that is, the engine type information stored in the storage means (1b) and (2b) of both ECUs (1a) and (2a) does not match. When ECU (1a) determines.
If the determination in step (S3) is negative, that is, if the mounted machine individual identification information stored in the storage means (1b) (2b) of both ECUs (1a) (2a) does not match, the engine ECU When (1a) determines.
If the determination in step (S4) is negative, that is, the engine individual identification information stored in the storage means (1b) of the engine ECU (1a) and the engine individual identification information held in the engine tag (6) are When the engine ECU (1a) determines that they do not match.
The warning by the warning means (4) displays a light-electric indication that “the engine will not be started in order to prevent unauthorized operation of the mounted engine” and also announces with a reading sound.

  As a modification of the first embodiment, the key switch (3) is linked to the warning means (4) and the engine start circuit (5) via the onboard machine ECU (2a), and the steps (S1) to Examples include the determination process in (S5) and the execution process in step (S5) and step (S6) performed by the on-board machine ECU (2a).

The second embodiment shown in FIGS. 4 and 5 differs from the first embodiment in the following points.
That is, in the first embodiment, as shown in FIG. 2, the storage unit identification information of the engine mounted machine (2) is stored in the storage means (1b) (2b) of both ECUs (1a) (2a). However, in the second embodiment, instead of this, as shown in FIG. 4, the engine individual identification information of the engine (1) is stored in the storage means (1b) (2b) of both ECUs (1a) (2a). Remember. As shown in FIG. 5, in step (S3), it is determined whether or not the engine individual identification information stored in the storage means (1b) and (2b) of both ECUs (1a) and (2a) match. If the determination in step (S3) is negative, that is, if the engine individual identification information stored in the storage means (1b) (2b) of both ECUs (1a) (2a) does not match, the engine ECU If (1a) is determined, in step (S6), the engine ECU (1a) causes the warning means (4) to issue a warning not to start the engine without starting the engine (1).
Other configurations and functions are the same as those of the first embodiment, and in FIG. 4 and FIG. 5, the same elements as those of the first embodiment are denoted by the same reference numerals.

  As a modification of the second embodiment, the key switch (3) is linked to the warning means (4) and the engine starting circuit (5) via the onboard machine ECU (2a), and the steps (S1) to Examples include the determination process in (S5) and the execution process in step (S5) and step (S6) performed by the on-board machine ECU (2a).

The configuration and function of each embodiment of the present invention are as described above, but the present invention is not limited to each of the above embodiments.
In each embodiment, an agricultural tractor is used as an engine-mounted machine, but the engine-mounted machine is an agricultural machine such as a rice planting machine, a seeder, a combiner, or a harvester, a construction machine such as a backhoe, an industrial machine such as an engine generator, It may be used in other fields.

(1) Engine
(1a) Engine ECU
(1b) Storage means
(2) Engine-equipped machine
(2a) On-board machine ECU
(2b) Storage means
(3) Key switch
(4) Warning means
(5) Engine start circuit
(6) Engine tag

Claims (5)

An engine ECU (1a), an engine ECU (1a) that controls the engine (1), and a mounting machine ECU (2a) that controls an engine-equipped machine (2) on which the engine (1) is mounted, In an engine-equipped machine that enables transmission and reception of information between (1a) and the mounted machine ECU (2a),
The storage means (1b) of the engine ECU (1a) stores a plurality of engine output control maps for each engine type having different output control characteristics of the engine output, and is mounted on the storage means (2b) of the mounted machine ECU (2a). The engine type information of the power engine (1) is stored, and based on the engine type information transmitted from the mounted machine ECU (2a), the engine ECU (1a) outputs the engine output of the corresponding engine type from a plurality of engine output control maps. When the control map is selected and the engine ECU (1a) performs the output control of the engine (1) based on the engine output control map,
The key switch (3) is linked to the warning means (4) and the engine starting circuit (5) via one of the ECUs (1a) and (2a).
The engine type information stored in the storage means (2b) of the mounted machine ECU (2a) is stored in the storage means (1b) of the engine ECU (1a), and the two ECUs are operated during the engine start operation by the key switch (3). (1a) When any of the ECUs (1a) and (2a) determines that the engine type information stored in the storage means (1b) and (2b) of (1a) and (2a) does not match Is characterized in that either of the ECUs (1a) and (2a) causes the warning means (4) to issue a warning not to start the engine without starting the engine (1). An engine-equipped machine. In the engine-mounted machine according to claim 1,
The storage means (1b) and (2b) of both ECUs (1a) and (2a) store the individual machine identification information of the engine-equipped machine (2), and when the engine is operated by the key switch (3), The ECU (1a) (2a) determines that the mounted machine individual identification information stored in the storage means (1b) (2b) of the ECU (1a) (2a) does not match. In such a case, either of the ECUs (1a) and (2a) may cause the warning means (4) to issue a warning not to start the engine without starting the engine (1). An engine-equipped machine characterized by In the engine-equipped machine according to claim 1 or 2,
The engine individual identification information of the engine (1) is stored in the storage means (1b) of the engine ECU (1a),
The engine tag (6) attached to the engine (1) holds the engine individual identification information, and the engine individual identification information held in the engine tag (6) at the time of engine start operation by the key switch (3) is stored in both ECUs (1a). ) The engine individual identification information read in any ECU of (2a) and stored in the storage means (1b) of the engine ECU (1a) does not match the engine individual identification information held in the engine tag (6). If any of the ECUs (1a) and (2a) determines that the ECU (1a) (2a) does not start the engine (1), a warning is issued. An engine-equipped machine, characterized in that the means (4) issues a warning not to start the engine. In the engine-mounted machine according to claim 1,
The storage means (1b) (2b) of both the ECUs (1a), (2a) store the engine individual identification information of the engine (1), and the two ECUs (1a, 1a) when the engine is started by the key switch (3). ) When either of the ECUs (1a) (2a) determines that the engine individual identification information stored in the storage means (1b) (2b) of (2a) does not match. One of the ECUs (1a) and (2a) causes the warning means (4) to issue a warning not to start the engine without starting the engine (1). Engine mounted machine. In the engine-mounted machine according to claim 4,
The engine tag (6) attached to the engine (1) holds the engine individual identification information, and the engine individual identification information held in the engine tag (6) at the time of engine start operation by the key switch (3) is stored in both ECUs (1a). ) The engine individual identification information read in any ECU of (2a) and stored in the storage means (1b) of the engine ECU (1a) does not match the engine individual identification information held in the engine tag (6). If any of the ECUs (1a) and (2a) determines that the ECU (1a) (2a) does not start the engine (1), a warning is issued. An engine-equipped machine, characterized in that the means (4) issues a warning not to start the engine.

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