JP2015175264A - System for releasing limitation on operation of engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for releasing limitation on operation of an engine capable of releasing limitation on operation of the engine when it is required to operate the engine urgently in the case of disaster and the like even if a residual level of urea water in a urea water tank becomes less than a prescribed value and limitation on engine operation is applied.SOLUTION: This invention is constituted in such a way that a releasing key management device B includes a releasing key (b) input part B1, a releasing key (b) storage part B2 and a releasing key (b) output part B3; a service tool C includes a releasing key (b) input part C1, a releasing key (b) storage part C2 and a releasing key (b) output part C3; and a control device 5 includes a releasing key (b) input part 5a. After an operation limitation is applied to an engine 1 by the control device 5, the respective releasing key (b) specific to the engine 1 output from the releasing key management device B is inputted to the control means 5 of the engine 1 through the service tool C and the operation limitation for the engine 1 by the control device 5 is released.

Description

  The present invention relates to an engine operation restriction release system, and more specifically, even when the urea water remaining level in a urea water tank is less than a predetermined value and the engine operation is restricted, the engine is urgently used in a disaster. The present invention relates to an engine operation restriction release system that can release an engine operation restriction when it is necessary to operate the engine.

  Conventionally, as an engine urea SCR system, an engine, an exhaust purification device, and a control device are provided. The exhaust purification device includes a urea SCR catalyst, a urea water tank, a urine hydrophobic level sensor, a urea water injector, and a control device. The urea water in the water tank is mixed with the exhaust gas by the urea water injector, the nitrogen oxide in the exhaust gas is reduced by the urea SCR catalyst, and the remaining amount level of the urea water in the urea water tank is less than a predetermined value. There is a configuration in which the operation of the engine is limited by the control device based on the detection by the urea water level sensor (see, for example, Patent Document 1).

  According to this type of engine urea SCR system, nitrogen oxides in exhaust gas can be efficiently purified with urea water and a urea SCR catalyst, and if the urea water is not replenished, engine operation is restricted. There is an advantage that unauthorized use of an engine that operates the engine without replenishing urea water can be prevented.

  However, this Patent Document 1 has a problem because it does not have means for releasing the engine operation restriction.

JP 2012-2061 A (see FIG. 4)

<< Problem >> Even if it is necessary to urgently operate the engine at the time of a disaster, there is a problem that the engine operation restriction cannot be released.
In Patent Document 1, there is no means to cancel the operation of the engine even if the operation of the engine is restricted as a result of the fact that it is impossible to procure urea water, such as a road disruption due to a disaster. Even when it is necessary to operate the engine, there is a problem that the engine operation restriction cannot be released. In this case, using the engine-equipped machine, it is not possible to perform necessary activities during a disaster, such as rescue activities and transportation of goods.

  The problem of the present invention is that even when the remaining amount level of urea water in the urea water tank is less than a predetermined value and the operation of the engine is restricted, the engine must be operated urgently in the event of a disaster. It is an object of the present invention to provide an engine operation restriction release system that can release the operation restriction.

Invention specific matters of the invention according to claim 1 are as follows.
As illustrated in FIG. 2, the urea SCR system (A) of the engine (1), the release key management device (B) in which the operation restriction release key (b) of the engine (1) is stored, and the release key ( a service tool (C) for releasing the engine operation restriction using b),
As illustrated in FIG. 2, the urea SCR system (A) of the engine (1) includes an engine (1), an exhaust purification device (2), and a control means (5).
The exhaust purification device (2) includes a urea SCR catalyst (3), a urea water tank (4), a urea water level sensor (6), and a urea water injector (9), and urea water in the urea water tank (4). (4a) is mixed with the exhaust water (10) by the urea water injector (9), and nitrogen oxides in the exhaust (10) are reduced by the urea SCR catalyst (3).
Based on the fact that the remaining amount level of the urea water (4a) in the urea water tank (4) is less than a predetermined value, the control means (5) detects the engine ( 1) Operation restriction (S2) is configured,
As illustrated in FIG. 2, the release key management device (B) includes an input unit (B4), a storage unit (B5), and an output unit (B6) for the release key (b).
The service tool (C) includes an input unit (C1), a storage unit (C2), and an output unit (C3) for a release key (b).
The control device (5) includes an input unit (5a) for a release key (b),
As illustrated in FIGS. 2 and 3, after the engine (1) is restricted (S <b> 2) by the control device (5), it is unique to each engine (1) output from the release key management device (B). When the release key (b) is input to the control means (5) of the engine (1) by the service tool (C), the operation restriction of the engine (1) by the control device (5) is released (S4). An engine operation restriction canceling system, characterized in that the engine operating restriction canceling system is configured.

(Invention of Claim 1)
The invention according to claim 1 has the following effects.
<Effect> When it is necessary to operate the engine urgently at the time of a disaster, the engine operation restriction can be released.
As illustrated in FIGS. 2 and 3, after the engine (1) is restricted (S <b> 2) by the control device (5), it is unique to each engine (1) output from the release key management device (B). Is input to the control means (5) of the engine (1) by the service tool (C), so that the operation restriction of the engine (1) by the control device (5) is released (S4). Since it is configured, when it is necessary to urgently operate the engine (1) at the time of a disaster, the operation restriction of the engine (1) can be released. For this reason, using the engine-equipped machine (D), it is possible to perform necessary activities in the event of a disaster, such as rescue activities and transportation of goods.

(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> Replenishment of urea water can be motivated.
The restriction on the operation of the engine (1) by the control device (5) prohibits the restart of the engine (1). Therefore, if the urea water (4a) is not replenished, the engine (1) cannot be restarted. And can be motivated to replenish urea water (4a).

(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 cancellation can be suppressed.
Since the release key fluctuates with time, it is difficult to obtain the release key illegally, and unauthorized release by the illegally obtained release key can be prevented.

1 is a schematic diagram of an engine SCR system used in an engine operation restriction release system according to an embodiment of the present invention. 1 is a schematic diagram of an engine operation restriction release system according to an embodiment of the present invention. It is a flowchart of the process regarding the driving | running | working restriction | limiting and the cancellation | release by the control apparatus of the engine which concerns on embodiment of this invention.

  1 to 3 are diagrams illustrating an engine operation restriction release system according to an embodiment of the present invention. In this embodiment, an engine operation restriction release system of a diesel engine will be described.

The outline of the engine operation restriction release system is as follows.
As shown in FIG. 2, a urea SCR system (A) of the engine (1), a key management device (B) in which an operation restriction release key (b) of the engine (1) is stored, and a release key (b) And a service tool (C) for canceling the operation restriction of the engine (1).
As illustrated in FIG. 2, the urea SCR system (A) of the engine (1) includes an engine (1), an exhaust purification device (2), and a control means (5).
The exhaust purification device (2) includes a urea SCR catalyst (3), a urea water tank (4), a urea water level sensor (6), and a urea water injector (9), and urea water in the urea water tank (4). (4a) is mixed with the exhaust gas (10) by the urea water injector (9), and nitrogen oxides in the exhaust gas (10) are reduced by the urea SCR catalyst (3).
Based on the fact that the remaining amount level of the urea water (4a) in the urea water tank (4) is less than a predetermined value, the control means (5) detects the engine ( The operation restriction (S2) of 1) is made.
SCR is an abbreviation for Selective Catalytic Reduction.

The configuration of the engine (1) is as follows.
As shown in FIG. 1, in the engine (1), a cylinder head (12) is assembled to an upper part of a cylinder block (11), a cylinder head cover (13) is assembled to an upper part of the cylinder head (12), and a cylinder block ( 11) is assembled with a transmission gear case (14), an engine cooling fan (15) is disposed at the front, a flywheel (16) is disposed at the rear of the cylinder block (11), and a cylinder block ( An oil pan (17) is assembled to the lower part of 11).
An exhaust manifold (18) is assembled on one side of the cylinder head (12), and an intake manifold (not shown) is assembled on the other side of the cylinder head (12). A starting motor (19) is assembled on one side of the cylinder block (11).

The configuration of the exhaust emission control device (2) is as follows.
As shown in FIG. 1, the exhaust purification device (2) includes a DPF case (20), an SCR case (21), and a urea water tank (4).
The DPF case (20) and the SCR case (21) are connected in series downstream of the exhaust manifold (18). The upstream side is the DPF case (20) and the downstream side is the SCR case (21). A DOC (22) and a DPF (23) are accommodated in the DPF case (20). The upstream side is the DOC (22), and the downstream side is the DPF (23). The SCR case (21) contains a urea SCR catalyst (3) and an ammonia purifying oxidation catalyst (24). The upstream side is the urea SCR catalyst (3), and the downstream side is the ammonia purification oxidation catalyst (24). DOC is an abbreviation for diesel oxidation catalyst, and DPF is an abbreviation for diesel particulate filter.
The DPF case (20) and the SCR case (21) are connected by a urea water mixing passage (25), and a urea water injector (9) is disposed in the urea water mixing passage (25).

The supply structure of urea water is as follows.
As shown in FIG. 1, the urea water (4a) in the urea water tank (4) is supplied to the urea water injector (9) through the urine hydrophobic supply line (26). The urine hydrophobic supply line (26) is provided with a urea water supply pump (27). A urea water return line (28) is provided between the urea water injector (9) and the urea water tank (4), and part of the urea water (4a) supplied to the urea water injector (9) is urea. Without being injected by the water injector (9), the urea water injector (9) is cooled and returned to the urea water tank (4) from the urea water return line (28).
The urea water tank (4) includes a urea water level sensor (6), and the urea water level sensor (6) controls the remaining amount level signal of the urea water (4a) in the urea water tank (4) by the control device (5). ) Is output.

The control device (5) is an engine ECU. ECU is an abbreviation for electronic control unit and is a microcomputer.
As shown in FIG. 1, a urea water level sensor (6) and a starting motor (19) are electrically connected to the control device (5).

As shown in FIG. 2, the release key management device (B) includes a release key input unit (B4), a storage unit (B5), and an output unit (B6).
The service tool (C) includes a release key input unit (C1), a storage unit (C2), and an output unit (C3).
The control device (5) includes a release key input section (5a).
As shown in FIG. 2 and FIG. 3, after the operation restriction (S2) of the engine (1) by the control device (5) is performed, each engine (1) output from the release key management device (B) is unique. When the release key (b) is input to the control means (5) of the engine (1) by the service tool (C), the operation restriction of the engine (1) by the control device (5) is released (S4). It is comprised so that.

The details of the operation restriction are as follows.
The operation restriction of the engine (1) by the control device (5) is prohibition of restart of the engine (1). When the urea water (4a) in the urea water tank (4) becomes less than a predetermined value, the function of the starting motor (19) is stopped by the control device (5) and the restart of the engine is prohibited. .
The operation limitation of the engine (1) may be output limitation of the engine (1) instead of prohibiting restart of the engine (1).

The release key is configured to change over time.
In other words, a table to which a release key is assigned every predetermined elapsed time starting from a predetermined reference time (such as when the engine is shipped) is a release key group, and when the release key is input, it corresponds to the elapsed time at the time of input. The release key to be used is the release key unique to the engine.

The flow of processing of the control device (5) relating to the operation restriction and release of the engine (1) is as follows.
As shown in FIG. 3, in step (S1), it is determined whether the remaining amount level of the urea water (4a) in the urea tank (4) is less than a predetermined value. If the determination is negative, the determination in step (S1) is repeated, and if the determination is affirmative, the process proceeds to step (S2).
In step (S2), the operation of the engine (1) is restricted. Specifically, restart of the engine (1) is prohibited. That is, when the engine (1) is stopped, it cannot be restarted.
When the operation of the engine (1) is restricted in step (S2), the process proceeds to step (S3).
In step (S3), it is determined whether a release key unique to the engine (1) has been input. If the determination is negative, the determination in step (S3) is repeated, and if the determination is affirmative, the process proceeds to step (S4).
In step (S4), the operation restriction of the engine (1) is released. Specifically, engine restart is permitted.
The engine operation restriction in step (S2) may be output restriction of the engine (1) instead of prohibiting restart of the engine (1).

The details of the operation restriction cancellation system of the engine (1) and the cancellation procedure are as follows.
As shown in FIG. 2, an engine-equipped machine (D) equipped with the SCR system (A) of the engine (1) is placed under the control of the user. A restriction release requesting device (E) for applying for cancellation of the operation restriction of the engine (1) is also under the control of the user. The restriction release requesting device (E) is provided with a mobile phone, a notebook personal computer, a stationary personal computer, and the like.
Restriction release request information (e) is transmitted from the restriction release request device (E). The restriction release application information (e) includes ID information of the engine (1) subject to the restriction release request and the user of the engine-equipped machine (D) on which the engine (1) is mounted. The ID information of the engine (1) includes a body symbol (also referred to as a body number or a machine number) unique to the engine (1), and the user ID information includes the name and address of the user.
Due to the occurrence of a disaster, it becomes impossible to procure urea water (4a), the remaining amount level of urea water (4a) in the urea water tank (4) becomes less than a predetermined value, and the engine (1) is controlled by the control means (5). However, if the engine (1) needs to be operated urgently, the user can send the restriction release request information (e) by e-mail etc. to the release service provider using the restriction release request device (E). Send.

  As shown in FIG. 2, the release key acquisition device (F) and the service tool (C) are under the control of the release service provider. The dealer who sells the engine-equipped machine (D) to the user is allocated to the release service provider. The release key acquisition device (F) is provided with a stationary personal computer or the like. The release key acquisition device (F) includes a restriction release request information (e) input unit (F1), a storage unit (F2), a determination unit (F3), and a release key application information output unit (F4). A key input unit (F5) and an output unit (F6) are provided. When the restriction release request information (e) from the user is input from the input unit (F1) of the release key acquisition device (F), this is stored in the storage unit (F2), and the restriction release request information is received by the determination unit (F3). When the authenticity of (e) is determined and it is determined that it is true, the release key request information (f) is transmitted from the output unit (F4) to the release key manager by e-mail or the like.

The restriction release request information (e) is automatically input by directly receiving the restriction release request information (e) at the input unit (F1) of the release key acquisition device (F). May be automatically transferred to the release key acquisition device (F) and input, or may be input by the operator.
The release key request information (f) is automatically transmitted from the output unit (F4) of the release key acquisition device (F) after the restriction release request information (e) is determined to be true. The output from F4) may be automatically transferred to another transmitter and transmitted, or may be transmitted by an operator.
The authenticity of the restriction release request information (e) is that the ID information of the engine (1) and the user included in the restriction release request information (e) is stored in advance in the storage unit (F2). Judgment is made based on whether or not they match. The release key request information (f) includes ID information of the release service provider and ID information of the engine (1). The ID information of the cancellation service provider includes access permission information given in advance by the cancellation key manager.

As shown in FIG. 2, the release key management device (B) is under the control of the release key manager who manages the release key (b). The release key manager is assigned to the machine manufacturer that manufactured the engine-equipped machine (D). The release key management device (B) is provided with a stationary computer or the like. The release key management device (B) includes an input unit (B1) for release key request information (f), a storage unit (B2), a determination unit (B3), and an input unit (B4) for emergency declaration information (p). ) And an output part (B5) of a release key (b).
When a disaster occurs, the release key manager inputs emergency declaration information (p) from the input unit (B4) of the release key management device (B), and this is registered in the storage unit (B2) for a predetermined period. In the emergency declaration information (p), when the release key request information (f) judged to be true is input to the release key management device (B), permission to send the release key (b) to the release service provider is permitted. Processing information to be included.

As shown in FIG. 2, during the period when emergency declaration information (p) is registered in the storage unit (B2) of the release key management device (B), the input unit (B1) of the release key management device (B) When the release key request information (f) is input, it is stored in the storage unit (B2). When the determination unit (B3) determines the authenticity of the release key request information (f) and determines that it is true The release key (b) unique to the engine (1) stored in advance in the storage unit (B2) is transmitted from the output unit (B4) to the release service provider by e-mail or the like.
The release key (p) is automatically transmitted from the output unit (B4) of the release key management device (B) after the release key request information (f) is determined to be true. May be automatically transferred to another transmission device and transmitted, or may be transmitted by an operator.
Whether the release key request information (f) is true or not is determined by storing in advance the ID information of the engine (1) and the release service provider included in the release key request information (f) in the storage unit (B2). It is determined by whether or not it matches the ID information.

When the release key (f) is input from the input unit (F5) of the release key acquisition device (F), this is stored in the storage unit (F2) of the release key acquisition device (F). The release key (f) is output from the output unit (F6) of the release key acquisition device (F) by the operation of the release key acquisition device (F) or the service tool (C), and is input to the service tool (C). Input from (C1) and stored in the storage unit (C2) of the service tool (C). The cancellation service provider carries the service tool (C) and goes to the engine-equipped machine (D) under the user's control, and the service tool (C) is input to the control unit (5) of the engine (1) ( 5a), the engine (1) release key (f) is output from the output part (C3) of the service tool (C) to the control device (5) of the engine (1), and the engine (1) is operated. Remove the restriction.
The input of the release key (f) is automatically performed by directly receiving the release key (f) at the input unit (F5) of the release key acquisition device (F). Alternatively, it may be automatically transferred to the release key acquisition device (F) and input, or input by the operator.

(A) Urea SCR system
(B) Release key management device
(B4) Release key input section
(B5) Release key storage
(B6) Release key output section
(b) Release key
(C) Service tool
(C1) Release key input section
(C2) Release key storage
(C3) Release key output section
(1) Engine
(2) Exhaust purification device
(3) Urea SCR catalyst
(4) Urea water tank
(4a) Urea solution
(5) Control device
(5a) Release key input section
(6) Urea water level sensor
(9) Urea water injector
(10) Exhaust
(S2) Canceling engine operation restrictions
(S4) Engine operation restrictions

Claims (3)

The engine (1) using the urea SCR system (A) of the engine (1), the release key management device (B) storing the operation restriction release key (b) of the engine (1), and the release key (b). ) Service tool (C) that removes the driving restrictions
The urea SCR system (A) of the engine (1) includes an engine (1), an exhaust purification device (2), and a control means (5).
The exhaust purification device (2) includes a urea SCR catalyst (3), a urea water tank (4), a urea water level sensor (6), and a urea water injector (9), and urea water in the urea water tank (4). (4a) is mixed with the exhaust water (10) by the urea water injector (9), and nitrogen oxides in the exhaust (10) are reduced by the urea SCR catalyst (3).
Based on the fact that the remaining amount level of the urea water (4a) in the urea water tank (4) is less than a predetermined value, the control means (5) detects the engine ( 1) Operation restriction (S2) is configured,
The release key management device (B) includes an input unit (B4), a storage unit (B5), and an output unit (B6) for the release key (b).
The service tool (C) includes an input unit (C1), a storage unit (C2), and an output unit (C3) for a release key (b).
The control device (5) includes an input unit (5a) for a release key (b),
After the operation restriction (S2) of the engine (1) by the control device (5) is performed, the release key (b) unique to each engine (1) output from the release key management device (B) is a service tool (C ), The operation restriction of the engine (1) by the control device (5) is canceled (S4) by being input to the control means (5) of the engine (1). An engine operation restriction release system. In the engine operation restriction release system according to claim 1,
An engine operation restriction canceling system characterized in that the engine (1) operation restriction by the control device (5) is prohibition of restart of the engine (1). In the engine operation restriction release system according to claim 1 or 2,
The engine operation restriction release system, wherein the release key (b) is configured to change over time.

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