JPS5669428A - Fuel-cut circuit for electronically controlled fuel injector - Google Patents
Fuel-cut circuit for electronically controlled fuel injectorInfo
- Publication number
- JPS5669428A JPS5669428A JP14420879A JP14420879A JPS5669428A JP S5669428 A JPS5669428 A JP S5669428A JP 14420879 A JP14420879 A JP 14420879A JP 14420879 A JP14420879 A JP 14420879A JP S5669428 A JPS5669428 A JP S5669428A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- cut
- pulse
- engine
- electronically controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE: To precisely perform fuel cut and reinjection control on the basis of an engine running speed by providing a fuel cutting circuit which can cut a fuel and easily measure an engine r.p.m. at which a reinjection is required to be performed.
CONSTITUTION: A pulse length TN1 appearing when a transistor Q4 is on is assumed to be equal to a pulse length TH of a frequency signal (b) which is provided when a fuel is needed to be cut at a certain r.p.m. If an engine r.p.m. is higher than said value, the TH is less than the TN1 so that a basic pulse tp is generated when a transistor Q3 is on. However, as the Q3 is on, by which an output line of a basic pulse oscillation circuit 5 is grounded via a diode D3, the Q3 and a switch 4, the tp is cut in correspondence with a difference between pulse length TH and TN. Thereby, a fuel is cut bases on the cut pulse.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14420879A JPS5669428A (en) | 1979-11-07 | 1979-11-07 | Fuel-cut circuit for electronically controlled fuel injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14420879A JPS5669428A (en) | 1979-11-07 | 1979-11-07 | Fuel-cut circuit for electronically controlled fuel injector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5669428A true JPS5669428A (en) | 1981-06-10 |
Family
ID=15356735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14420879A Pending JPS5669428A (en) | 1979-11-07 | 1979-11-07 | Fuel-cut circuit for electronically controlled fuel injector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5669428A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6151452U (en) * | 1984-09-10 | 1986-04-07 |
-
1979
- 1979-11-07 JP JP14420879A patent/JPS5669428A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6151452U (en) * | 1984-09-10 | 1986-04-07 |
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