JPS5652559A - Air-fuel ratio controller for lpg engine - Google Patents
Air-fuel ratio controller for lpg engineInfo
- Publication number
- JPS5652559A JPS5652559A JP12922779A JP12922779A JPS5652559A JP S5652559 A JPS5652559 A JP S5652559A JP 12922779 A JP12922779 A JP 12922779A JP 12922779 A JP12922779 A JP 12922779A JP S5652559 A JPS5652559 A JP S5652559A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- air
- control valve
- communicates
- valve
- 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 prevent the air-fuel ratio from changing due to system switching by assuming a fuel supplier which supplies air and fuel as the only system, successively controlling it, and controlling the air-fuel ratio in accordance with all operating conditions.
CONSTITUTION: A fuel supplier 4 is installed on the upper throttle valve 5 in an intake pipe 2. This supplier is constructed as a variable choke carburetor whose fuel discharge outlet 8 to discharge the LPG fuel via a fuel measuring jet 7 is opened in a venturi channel 6 whose area changes with the intake amount. A fuel introduction path 22 which communicates with the fuel discharge outlet 8 communicates with a control valve chamber 32. The control valve chamber 32 communicates with the pressure regulating chamber 26 of a pressure regulating valve 31 via the valve body 34 of a control valve 39 and its valve seat 33. The control valve 39 is provided with a stepping motor type actuator 43 which is controlled by a control circuit section 41 that successively generates positive or negative pulse signals based on the output of an O2 sensor 40, and the actuator controls the passage area.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12922779A JPS5652559A (en) | 1979-10-05 | 1979-10-05 | Air-fuel ratio controller for lpg engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12922779A JPS5652559A (en) | 1979-10-05 | 1979-10-05 | Air-fuel ratio controller for lpg engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5652559A true JPS5652559A (en) | 1981-05-11 |
Family
ID=15004293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12922779A Pending JPS5652559A (en) | 1979-10-05 | 1979-10-05 | Air-fuel ratio controller for lpg engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5652559A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59224433A (en) * | 1983-06-02 | 1984-12-17 | Yanmar Diesel Engine Co Ltd | Air-fuel ratio controller for gas engine |
| JPS61210261A (en) * | 1985-03-13 | 1986-09-18 | Yanmar Diesel Engine Co Ltd | Air-fuel ratio controller for spark ignition type gas engine |
-
1979
- 1979-10-05 JP JP12922779A patent/JPS5652559A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59224433A (en) * | 1983-06-02 | 1984-12-17 | Yanmar Diesel Engine Co Ltd | Air-fuel ratio controller for gas engine |
| JPS61210261A (en) * | 1985-03-13 | 1986-09-18 | Yanmar Diesel Engine Co Ltd | Air-fuel ratio controller for spark ignition type gas engine |
| JPH0262698B2 (en) * | 1985-03-13 | 1990-12-26 | Yanmar Diesel Engine Co |
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