JPS5517603A - Air-fuel ratio controller for lpg engine - Google Patents
Air-fuel ratio controller for lpg engineInfo
- Publication number
- JPS5517603A JPS5517603A JP8839578A JP8839578A JPS5517603A JP S5517603 A JPS5517603 A JP S5517603A JP 8839578 A JP8839578 A JP 8839578A JP 8839578 A JP8839578 A JP 8839578A JP S5517603 A JPS5517603 A JP S5517603A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- passage
- main
- valve
- solenoid
- 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.)
- Granted
Links
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
PURPOSE: To maintain air fuel mixture gas having preferable air/fuel ratio in the entire operating zone for an LPG engine by determining the orifice diameter of a pressure control valve at an optimum size to thereby exactly operate the main valve.
CONSTITUTION: Liquefied petroleum gas (LPG) in a fuel tank 2 is eveporated at a vaporizor 3, and supplied through a main passage 10 and a slow passage 13 into a mixer 1. a main valve 9 is provided at the main passage 10 to operate by means of vacuum from a pressure control valve 6 for supplying predetermined vacuum upon reception of vacuum at the downstream side of a throttle valve at the mixer 1. The vacuum operates a main solenoid 7 at the output from a module 4 for processing a signal from an oxygen sensor 5 in the exhaust passage to thereby control the air amount introduced therefrom. In this case the diameter of the orifice 16 as the vacuum introducing passage at the downstream side of the throttle valve is so set in size as to vary inversely proportionally to the duty cycle of the solenoid 7 and a slow solenoid 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8839578A JPS6056906B2 (en) | 1978-07-21 | 1978-07-21 | Air fuel ratio control device for LPG engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8839578A JPS6056906B2 (en) | 1978-07-21 | 1978-07-21 | Air fuel ratio control device for LPG engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5517603A true JPS5517603A (en) | 1980-02-07 |
JPS6056906B2 JPS6056906B2 (en) | 1985-12-12 |
Family
ID=13941598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8839578A Expired JPS6056906B2 (en) | 1978-07-21 | 1978-07-21 | Air fuel ratio control device for LPG engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6056906B2 (en) |
-
1978
- 1978-07-21 JP JP8839578A patent/JPS6056906B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6056906B2 (en) | 1985-12-12 |
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