Engine start control system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 24, 2016
Grant Date -
Sep 26, 2013
app pub date -
Mar 18, 2013
filing date -
Mar 26, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In the process of starting by a recoil starter, a maximum value detection section of an ECM detects a maximum value of pressure (basic atmospheric pressure) in an intake pipe detected by a pressure sensor, within a predetermined range of crank angle after activation of the ECM. An idling control unit gives feedback control on an ISC valve based on engine speed detected by an engine speed sensor, to thereby keep idling engine speed at a specified value. A correction unit corrects a basic atmospheric pressure detected by the maximum value detection section based on the duty ratio of the ISC valve in idling, and uses the result as the atmospheric pressure. A storage unit 9d stores a map in which the duty ratio of the ISC valve in idling is correlated with the amount of correction to be made on the basic atmospheric pressure.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- F02N Class
- 267 Applications Filed
- 245 Patents Issued To-Date
- 91.77 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- F02N Class
- 15.24 % this patent is cited more than
- 9 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 | Nov 24, 2027 |
