Fuel control method for hand-carried engine-driven working machine
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United States of America Patent
Stats
-
Aug 25, 2015
Grant Date -
Oct 3, 2013
app pub date -
Mar 28, 2013
filing date -
Mar 29, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The opening of a solenoid valve is automatically adjusted after an engine is started and before actual work is performed for an appropriate air-fuel ratio, whereby it is possible to attain a good and stable driving of the engine without any delay even for an abrupt change in load. After the engine is started, when a rotation speed enters a “fuel flow rate adjusting rotation speed range” in which a definite load is applied to the engine in a working rotation speed range of the engine in which a throttle valve is opened to a definite opening, a detected rotation speed is fed back to a target rotation speed, and the opening of the solenoid valve is controlled to adjust a fuel flow rate, so that the combustion state in the engine is optimized at the valve opening so determined.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- F02M Class
- 8.59 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 25, 2027 |
