Automatic fuel enrichment for an engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
May 18, 2006
app pub date -
Nov 15, 2005
filing date -
Nov 18, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method and system for preventing excessive fuel supply during engine startup, including supplying supplementary fuel during cranking of a cold engine and preventing supply of the supplementary fuel if the engine fails to start running. A solenoid valve in a supplementary fuel supply passage permits the supply of supplementary fuel. A switching device controls the solenoid valve and is grounded by a thermistor that is placed adjacent to a heater element. During cranking, electric current is supplied to the heater element, which progressively increases in temperature to cause the electric resistance of the adjacent thermistor to decrease over a predetermined time, thereby causing the transistor to turn off and deactivate the solenoid valve. Thus, if the engine fails to start within the predetermined time, the supplementary fuel supply is cut off by the solenoid valve, thereby reducing the possibility of excessive fuel enrichment and engine flooding.
First Claim
Other Claims data not available
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- F02M Class
- 0.94 % this patent is cited more than
- 19 Age