JPS5477809A - Pneumatic control device for engine - Google Patents
Pneumatic control device for engineInfo
- Publication number
- JPS5477809A JPS5477809A JP14556077A JP14556077A JPS5477809A JP S5477809 A JPS5477809 A JP S5477809A JP 14556077 A JP14556077 A JP 14556077A JP 14556077 A JP14556077 A JP 14556077A JP S5477809 A JPS5477809 A JP S5477809A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- pressure
- port
- produced
- intake
- 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
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
PURPOSE: To provide a control device, which can simply and inexpensively detect variations of the pneumatic pressure by making use of negative pressure produced in the engine intake system and thus permits ready pneumatic pressure compensation of a vacuum motor, the operation of which is controlled according to the magnitude of the intake system negative pressure.
CONSTITUTION: At the time of the engine operation a negative pressure is produced at an intake passage 2, and this intake pressure is led through a port 26 to negative pressure paths 27 and 28. The throttling characteristic of orifices 28 to 32 is set such as to meet Px=Pa+α(Pm-Pa) and meet Py=Pyo+βPa under a condition |Pm-Pa| > 300 mmHg where Pm is the intake negative pressure produced at the opning of a port 33, Pa is the pressure substantially in the atmospheric pressure state at port 32, Px is the negative pressure produced at a negative pressure port 36 and Pxo is Px at Pa=0. Thus, in the vacuum motor 23 the load acting upon the diaphragm 25 is a function of only Pa, so that pneumatic pressure compensation can be readily made.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52145560A JPS5941015B2 (en) | 1977-12-02 | 1977-12-02 | Engine new automatic control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52145560A JPS5941015B2 (en) | 1977-12-02 | 1977-12-02 | Engine new automatic control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5477809A true JPS5477809A (en) | 1979-06-21 |
JPS5941015B2 JPS5941015B2 (en) | 1984-10-04 |
Family
ID=15387962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52145560A Expired JPS5941015B2 (en) | 1977-12-02 | 1977-12-02 | Engine new automatic control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5941015B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0196717U (en) * | 1987-12-18 | 1989-06-27 |
-
1977
- 1977-12-02 JP JP52145560A patent/JPS5941015B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5941015B2 (en) | 1984-10-04 |
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