Title:
GOOD-EFFICIENCY RPM ZONE DISPLAY DEVICE FOR CONSTRUCTION MACHINERY
Document Type and Number:
WIPO Patent Application WO/2013/089293
Kind Code:
A1
Abstract:
The present invention relates to a good-efficiency RPM zone display device for construction machinery, the device comprising: a control unit for outputting control signals which differ depending on whether the current engine RPM is within a predetermined good-efficiency RPM zone; and a good-efficiency display unit for selectively lighting or extinguishing an LED lamp in accordance with the control signal output from the control unit. In the present invention, a RPM zone is defined in which the efficiency of the construction machinery equipment is good, and the LED lamp is lit when the current engine RPM is within this zone such that, ultimately, fuel costs are improved when the equipment is used by a customer.
Inventors:
KIM HYUN-WOO (KR)
Application Number:
PCT/KR2011/009665
Publication Date:
June 20, 2013
Filing Date:
December 15, 2011
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
KIM HYUN-WOO (KR)
KIM HYUN-WOO (KR)
International Classes:
E02F9/26; B60K35/00
Foreign References:
| KR20030044933A | 2003-06-09 | |||
| KR20020076268A | 2002-10-09 | |||
| KR20070111893A | 2007-11-22 | |||
| JP2001182560A | 2001-07-06 |
Other References:
See also references of EP 2792799A4
Attorney, Agent or Firm:
YOON, Eui-Seoup (KR)
윤의섭 (KR)
윤의섭 (KR)
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Claims:
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