JPS56124640A - Intake-air flow controlling device for multi-cylinder internal combustion engine - Google Patents
Intake-air flow controlling device for multi-cylinder internal combustion engineInfo
- Publication number
- JPS56124640A JPS56124640A JP2735780A JP2735780A JPS56124640A JP S56124640 A JPS56124640 A JP S56124640A JP 2735780 A JP2735780 A JP 2735780A JP 2735780 A JP2735780 A JP 2735780A JP S56124640 A JPS56124640 A JP S56124640A
- Authority
- JP
- Japan
- Prior art keywords
- operative
- cylinders
- inoperative
- intake
- passages
- 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)
Abstract
PURPOSE: To render inoperative cylinders inoperative or operative selectively by an independent throttle valve provided especially for the inoperative cylinders, by employing such an arrangment that a throttle valve is provided in each of the intake passages provided independently for the group of inoperative cylinders and that of operative cylinders.
CONSTITUTION: A throttle valve 7B provided in the intake passage for operative cylinder group is opened and closed in association with the movement of an accelerator pedal, but a throttle valve 7A for the inoperative cylinder group is operated by a vacuum operated actuator 20. A vacuum feeding passage 27 for feeding vacuum to a vacuum chamber 23 of the actuator 20 is branched at a portion thereof into two passages. One of the branch passages is released to the atmosphere via the first solenoid valve 28, while the other is branched further into two passages at a downstream portion of a second solenoid valve 29. One of the branch passages is opened in a venturi portion 13B for the operative cylinders on the downstream side of an orifice 30, while the other is opened in an intake manifold 4B for the operative cylinder on the downstream side of an orifice 31 and the third solenoid valve 32.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2735780A JPS56124640A (en) | 1980-03-06 | 1980-03-06 | Intake-air flow controlling device for multi-cylinder internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2735780A JPS56124640A (en) | 1980-03-06 | 1980-03-06 | Intake-air flow controlling device for multi-cylinder internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56124640A true JPS56124640A (en) | 1981-09-30 |
Family
ID=12218787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2735780A Pending JPS56124640A (en) | 1980-03-06 | 1980-03-06 | Intake-air flow controlling device for multi-cylinder internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56124640A (en) |
-
1980
- 1980-03-06 JP JP2735780A patent/JPS56124640A/en active Pending
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