ENGINE SPEED CONTROL DEVICE
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United States of America Patent
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N/A
Issued Date -
Jul 23, 2020
app pub date -
Mar 26, 2018
filing date -
May 23, 2017
priority date (Note) -
Published
status (Latency Note)
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Abstract
An engine speed control device performing: a first PID gain calculation step of calculating a target engine speed to thereby calculate a first PID gain based on an engine speed deviation between the target engine speed and an engine speed; a target rack position calculation step of correcting the first PID gain based on a cooling water temperature to thereby calculate a target rack position of a fuel injection pump; a second PID gain calculation step of calculating a second PID gain based on a rack position deviation between the target rack position and a rack position; and a rack control signal producing step of correcting the second PID gain based on a lubricating oil temperature to thereby produce a rack control signal. The engine speed control device thus controls an engine speed by controlling the rack position based on the rack control signal.

First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- YANMAR CO., LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
IWANO, Ryota | Osaka-shi, JP | 6 | 9 |
MORITA, Tomoaki | Osaka, JP | 6 | 20 |
SHIMOMURA, Ryosuke | Osaka-shi, JP | 10 | 16 |
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