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Title:
FUEL CONTROL METHOD FOR HANDHELD ENGINE OPERATING MACHINE
Document Type and Number:
Japanese Patent JP2013096362
Kind Code:
A
Abstract:

To achieve a control of low electric power consumption during engine idling time at low engine rotational speed, and achieve an optimum combustion state by changing a fuel flow rate with a solenoid valve in a machine-operating state, on the basis of engine rotational speed feedback control as the basic control method.

A fuel control method for a handheld engine operating machine, during idling of the engine 9, performs: a rotational speed detection processing; an idling rotation control processing in which the detected rotational speed is compared with a predetermined rotational speed initial value, and the detected rotational speed is controlled to a rotational speed equal to the rotational speed initial value by means of ignition time control; and a valve opening correction processing based on the obtained value of control completion ignition time. Then, the fuel control method determines a valve opening in operating based on a variation amount of idling ignition time obtained in the valve opening correction processing.


Inventors:
Yamashita, Ryohei
Yamazaki, Akira
Saito, Tamotsu
Watanabe, Hideki
Nonaka, Takumi
Application Number:
JP2011000242202
Publication Date:
May 20, 2013
Filing Date:
November 04, 2011
Export Citation:
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Assignee:
IIDA DENKI KOGYO KK
ZAMA JAPAN CO LTD
International Classes:
F02D41/08; F02M7/00
Domestic Patent References:
JP2007262941A2007-10-11
JP2006226196A2006-08-31
JPS63223357A1988-09-16
JP2011012685A2011-01-20
JPH09209812A1997-08-12
JP2001073823A2001-03-21
JPH11107838A1999-04-20
JP2003090277A2003-03-28
JPH11280531A1999-10-12
JPH03130557A1991-06-04
JPH05133315A1993-05-28
JPS62129551A1987-06-11
JPH08261067A1996-10-08
JP2006161686A2006-06-22
JPH09158774A1997-06-17
JP2008106643A2008-05-08
JP2007262941A2007-10-11
JP2006226196A2006-08-31
JPS63223357A1988-09-16
JP2011012685A2011-01-20
JPH09209812A1997-08-12
JP2001073823A2001-03-21
JPH11107838A1999-04-20
JP2003090277A2003-03-28
JPH11280531A1999-10-12
JPH03130557A1991-06-04
JPH05133315A1993-05-28
JPS62129551A1987-06-11
Attorney, Agent or Firm:
渡辺 一豊