Exhaust gas purification system for engineering machine
US8646255B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2009 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Nov 11, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An exhaust gas purification system for an engineering machine is capable of avoiding decreases in working efficiency during regeneration control by burning off a deposit of particulate matter from a filter efficiently during a work pause time. An operating section 17 of a display monitor 16 is used to set a work pause time and a work pause switch 13 notifies a vehicle body control unit 21 that the hydraulic excavator has entered a work pause state. In response, the vehicle body control unit 21 calculates the time required for a regenerating device to burn off the current amount of particulate matter deposited on the filter, and when the calculated time is longer than the preset work pause time, a regeneration controller 4a of an engine control unit 4 is activated, and a solenoid control valve 15 is switched to a closed position during the preset work pause time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.