Title:
CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2019173567
Kind Code:
A
Abstract:
To prevent erroneous operation of a notification device caused by an erroneous detection at a water level sensor when a water separation unit receives high level vibration due to drilling and travelling or the like, provide a high level acknowledgement of serious condition about outflow of water stored in the water separation unit, enable the operator to carry out drainage work of the water separation unit in a compulsory manner while restricting influence against workability to minimum.SOLUTION: An engine controller 40 performs a fail-safe control including an engine speed limit control that makes an input of a water level arrival signal from a water level sensor effective when a key signal of a power supply ON is inputted before starting an engine 1 and drives a notification device 22 when the water level arrival signal is inputted and at the same time decreasing the engine speed of the engine 1 and an engine speed limit control for decreasing the engine speed of an engine 1 and further an engine stop control for stopping the engine 1 upon elapsing of predetermined time.SELECTED DRAWING: Figure 3
Inventors:
NOGUCHI SHUHEI
ISHII MOTOAKI
NAKABAYASHI TETSUYA
MIYAWAKI TATSUYA
ISHII MOTOAKI
NAKABAYASHI TETSUYA
MIYAWAKI TATSUYA
Application Number:
JP2018058925A
Publication Date:
October 10, 2019
Filing Date:
March 26, 2018
Export Citation:
Assignee:
HITACHI KENKI TEIERA KK
International Classes:
F02D45/00; E02F9/00; F02B61/00; F02D29/02; F02M37/28
Domestic Patent References:
| JP2013144906A | 2013-07-25 | |||
| JP2013534294A | 2013-09-02 |
Attorney, Agent or Firm:
Kaichi International Patent Office