Title:
内燃エンジンによって駆動される刈払機
Document Type and Number:
Japanese Patent JP6730867
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress occurrence of vibration caused by the combustion state of an engine at the time of deceleration.SOLUTION: When deceleration is detected, misfire control is executed (S1). When the engine speed reaches 5,000 rpm or less (S2), switching is made to normal ignition timing control (S4). Since the combustion state becomes unstable during deceleration of an engine, sudden and relatively large vibration occurs. The vibration can be suppressed by executing the misfire control. When restarting the operation of the engine, vibration at the time of restarting the operation does not occur in a region in which the engine speed is 4,500 rpm to 5,500 rpm (62). By restarting the operation when the engine speed is 5,000 rpm, it is possible to suppress the occurrence of vibration at the time of restarting the operation.SELECTED DRAWING: Figure 4
Inventors:
Kuniyoshi Saito
Hisato Onodera
Hisato Onodera
Application Number:
JP2016139786A
Publication Date:
July 29, 2020
Filing Date:
July 14, 2016
Export Citation:
Assignee:
Yamabiko Co., Ltd.
International Classes:
F02P5/15; A01D34/76; A01D34/90; F02B63/00; F02B63/02; F02D45/00
Domestic Patent References:
| JP2010151125A | ||||
| JP2014122620A | ||||
| JP2011190732A | ||||
| JP2013119861A | ||||
| JP2005168339A | ||||
| JP2009261340A |
Foreign References:
| US6735873 | ||||
| WO2011048697A1 |
Attorney, Agent or Firm:
Masashi Hirai
Kozu Sako
Kozu Sako