WORK VEHICLE - YANMAR CO LTD

Title:

WORK VEHICLE

Document Type and Number:

WIPO Patent Application WO/2019/026648

Kind Code:

A1

Abstract:

The objective of the present invention is to prevent failure of a diesel particulate filter (DPF) system caused by DPF regeneration control not being executed appropriately, while enabling satisfactory engine exhaust gas purification by causing the DPF system and an SCR system to operate appropriately. This work vehicle is provided with: a DPF system 11 which collects particulate matter contained in exhaust gas of an engine 10; an SCR system 12 which reduces nitrogen oxides contained in the exhaust gas by adding a reducing agent stored in a reducing agent storage tank 12B to the exhaust gas of the engine 10; and a control unit 22 which is capable of executing both DPF regeneration control to use the exhaust gas of the engine 10 to burn and remove the particulate matter collected and deposited by the DPF system 11, and SCR standard operation restriction control to restrict the operating conditions of the engine 10 if the reducing agent stored in the reducing agent storage tank 12B reaches a set amount or less, or if an abnormality occurs in the SCR system 12; wherein the control unit 22 is configured to execute DPF regeneration control more preferentially than SCR standard operation restriction control.

Inventors:

UEHARA DAI (JP)

Application Number:

PCT/JP2018/027309

Publication Date:

February 07, 2019

Filing Date:

July 20, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YANMAR CO LTD (JP)

International Classes:

F01N3/025; F01N3/08; F01N3/24; F02D45/00

Domestic Patent References:

WO2015025535A1	2015-02-26
WO2016076271A1	2016-05-19
WO2015025537A1	2015-02-26

Foreign References:

JP2016130518A	2016-07-21
JP2016078600A	2016-05-16
JP2013160104A	2013-08-19
JP2009127521A	2009-06-11
JP2015175264A	2015-10-05

Other References: