WORK VEHICLE AND WORK VEHICLE DISPLAY DEVICE

• US 20150246613A1
• Filed: 02/18/2014
• Published: 09/03/2015
• Est. Priority Date: 02/18/2014
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Shimazu, Mitsuhiro, Matsumoto, Hayato
• Granted Patent: US 9,862,273 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 13/04 concerning exhaust collecting exhaust gases with central suction systems not forming part of vehicles, e.g. in workshops or tunnels B08B15/002, otherwise along carriageways E01C1/005; extensions for melting snow on roads E01H5/00, E01H6/00; exhaust or silencing apparatus for internal combustion engines per se F01N; pipes, joints or supports therefor F16L
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: F01N 11/00 Monitoring or diagnostic devices for exhaust-gas treatment apparatus , e.g. for catalytic activity safety, indicating or supervising devices for internal combustion engines F02B77/08; testing of machines G01M13/00
• CPC Class Codes: F01N 2550/00 Monitoring or diagnosing the deterioration of exhaust systems
• CPC Class Codes: F01N 2590/08 for heavy duty applications, e.g. trucks, buses, tractors, locomotives
• CPC Class Codes: F01N 3/10 by thermal or catalytic conversion of noxious components of exhaust by using other chemical processes, chemical aspects of catalytic conversion, e.g. using specified catalysts, B01D53/34
• CPC Class Codes: F01N 3/2066 Selective catalytic reduction [SCR]
• CPC Class Codes: F02D 2041/227 Limping Home, i.e. taking specific engine control measures at abnormal conditions
• CPC Class Codes: F02D 2041/228 Warning displays
• CPC Class Codes: F02D 2200/604 Engine control mode selected by driver, e.g. to manually start particle filter regeneration or to select driving style
• CPC Class Codes: F02D 29/02 peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F02D 41/0235 in relation with the state of the exhaust gas treating apparatus control of exhaust gas treating apparatus per se F01N
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005
• CPC Class Codes: G08B 5/36 using visible light sources
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

A work vehicle including an internal combustion engine that generates power and an exhaust gas treatment device that treats exhaust gas emitted from the internal combustion engine, the work vehicle includes: a detection unit that detects an abnormality of the exhaust gas treatment device; an output restriction unit that restricts output of an output generation device included in the work vehicle when the detection unit detects the abnormality of the exhaust gas treatment device; a display control unit that causes a display unit to display information that the restriction on the output is allowed to be temporarily released; and a releasing unit that releases the restriction on the output in response to an instruction to temporarily release the restriction on the output.

Claims

1. A work vehicle including an internal combustion engine that generates power and an exhaust gas treatment device that treats exhaust gas emitted from the internal combustion engine, the work vehicle comprising:

a detection unit that detects an abnormality of the exhaust gas treatment device;

an output restriction unit that restricts output of an output generation device included in the work vehicle when the detection unit detects the abnormality of the exhaust gas treatment device;

a display control unit that causes a display unit to display information that the restriction on the output is allowed to be temporarily released; and

a releasing unit that releases the restriction on the output in response to an instruction to temporarily release the restriction on the output.

2. The work vehicle according to claim 1, wherein the display control unit causes the display unit to alternately display a first image including output restriction information that the output restriction unit is restricting the output, and a second image including information that the restriction on the output is allowed to be temporarily released.

3. The work vehicle according to claim 1, wherein

the allowable number of times for the temporary releasing of the restriction on the output is predetermined, and

the display control unit causes the display unit not to display the information that the restriction on the output is allowed to be temporarily released when the restriction on the output is not allowed to be temporarily released.

4. The work vehicle according to claim 1, wherein

the allowable number of times for the temporary releasing of the restriction on the output is predetermined, and

the display control unit causes the display unit to display the allowable number of times for the temporary releasing of the restriction on the output.

5. The work vehicle according to claim 1, wherein

the allowable amount of time for the temporary releasing of the restriction on the output is predetermined, and

the display control unit counts an amount of time the restriction on the output is temporarily released and causes the display unit to display remaining time information indicating remaining time the restriction on the output is allowed to be temporarily released.

6. A work vehicle including an internal combustion engine that generates power and an exhaust gas treatment device that treats exhaust gas emitted from the internal combustion engine, the work vehicle comprising:

a detection unit that detects an abnormality of the exhaust gas treatment device;

an output restriction unit that restricts output of an output generation device included in the work vehicle when the detection unit detects the abnormality of the exhaust gas treatment device;

a display control unit that causes a display unit to alternately display a first image including output restriction information that the output restriction unit is restricting the output, and remaining time until the output is restricted to the lowest state, and a second image including information that the restriction on the output is allowed to be temporarily released; and

a releasing unit that releases the restriction on the output in response to an instruction to temporarily release the restriction on the output.

7. A work vehicle display device included in a work vehicle having:

an internal combustion engine that generates power;

an exhaust gas treatment device that treats exhaust gas emitted from the internal combustion engine;

a detection unit that detects an abnormality of the exhaust gas treatment device;

an output restriction unit that restricts output of an output generation device included in the work vehicle when the detection unit detects the abnormality of the exhaust gas treatment device; and

a releasing unit that releases the restriction on the output in response to an instruction to temporarily release the restriction on the output, wherein

the work vehicle display device displays information that the restriction on the output is allowed to be temporarily released.

8. The work vehicle display device according to claim 7, wherein the work vehicle display device displays alternately an image including information on the abnormality of the exhaust gas treatment device and an image including the information that the restriction on the output is allowed to be temporarily released.

9. The work vehicle display device according to claim 7, wherein

the allowable number of times for the temporarily releasing of the restriction on the output is predetermined, and

the work vehicle display device does not display the information that the restriction on the output is allowed to be temporarily released when the restriction on the output is not allowed to be temporarily released.

10. The work vehicle display device according to claim 7, wherein

the allowable number of times for the temporary releasing of the restriction on the output is predetermined, and

the work vehicle display device displays the allowable number of times for the temporary releasing of the restriction on the output.

11. The work vehicle display device according to claim 7, wherein

the allowable amount of time for the temporary releasing of the restriction on the output is predetermined, and

the display control unit counts an amount of time the restriction on the output is temporarily released, and

the work vehicle display device displays remaining time the restriction on the output is allowed to be temporarily released.

12. A work vehicle display device included in a work vehicle having:

an internal combustion engine that generates power;

an exhaust gas treatment device that treats exhaust gas emitted from the internal combustion engine;

a detection unit that detects an abnormality of the exhaust gas treatment device;

an output restriction unit that restricts output of an output generation device included in the work vehicle when the detection unit detects the abnormality of the exhaust gas treatment device; and

a releasing unit that releases the restriction on the output in response to an instruction to temporarily release the restriction on the output, wherein

the work vehicle display device causes a display unit to alternately display a first image including output restriction information that the output restriction unit is restricting the output and remaining time until the output is restricted to the lowest state, and a second image including information that the restriction on the output is allowed to be temporarily released.