JPS575583A - Operating device for vacuum pump - Google Patents
Operating device for vacuum pumpInfo
- Publication number
- JPS575583A JPS575583A JP7920380A JP7920380A JPS575583A JP S575583 A JPS575583 A JP S575583A JP 7920380 A JP7920380 A JP 7920380A JP 7920380 A JP7920380 A JP 7920380A JP S575583 A JPS575583 A JP S575583A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum pump
- comparator
- changed
- motor
- point
- 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
- Valves And Accessory Devices For Braking Systems (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To increase the safety of a brake device, by intermittently operating a vacuum pump when the output signal of a vacuum sensor is not changed for a prescribed length of time.
CONSTITUTION: In a device 6 operating a vacuum pump 9 with a motor 8, a monostable multivibrator circuit 61 and auxiliary timer circuit 62 are provided. If a vacuum sensor 5 is short-circuited, output B of a comparator 37 in the monostable multivibrator circuit 61, being at a high level, causes a capacitor 39 in the auxiliary timer circuit 62 to be changed to increase potential at a point C, then a comparator 38 is inverted after a prescribed length of time with potential at a point B at a low level. In this way, the motor 8 is driven through a relay 7 to operate the vacuum pump 9 and prevent reduction of negative pressure in a brake booster 4.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7920380A JPH0228716B2 (en) | 1980-06-12 | 1980-06-12 | BAKYUUMUHONPUSADOSOCHI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7920380A JPH0228716B2 (en) | 1980-06-12 | 1980-06-12 | BAKYUUMUHONPUSADOSOCHI |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS575583A true JPS575583A (en) | 1982-01-12 |
| JPH0228716B2 JPH0228716B2 (en) | 1990-06-26 |
Family
ID=13683387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7920380A Expired - Lifetime JPH0228716B2 (en) | 1980-06-12 | 1980-06-12 | BAKYUUMUHONPUSADOSOCHI |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0228716B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164252A (en) * | 1983-03-04 | 1984-09-17 | Toyota Motor Corp | Apparatus for supplying negative pressure of brake booster |
| JPH01164670A (en) * | 1987-12-21 | 1989-06-28 | Nippon Piston Ring Co Ltd | Pressure difference generating device for master bag in brake magnification system for diesel engine automobile |
| JP2006199079A (en) * | 2005-01-18 | 2006-08-03 | Fuji Heavy Ind Ltd | Control device of negative pressure pump for brake |
| CN111219320A (en) * | 2019-11-29 | 2020-06-02 | 浙江爱特制冷设备有限公司 | Method for controlling vacuum pump through vacuum gauge |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR927003179A (en) * | 1990-11-27 | 1992-12-17 | 에죠에 시게루 | Air treatment method by multilayer disc |
-
1980
- 1980-06-12 JP JP7920380A patent/JPH0228716B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164252A (en) * | 1983-03-04 | 1984-09-17 | Toyota Motor Corp | Apparatus for supplying negative pressure of brake booster |
| JPH01164670A (en) * | 1987-12-21 | 1989-06-28 | Nippon Piston Ring Co Ltd | Pressure difference generating device for master bag in brake magnification system for diesel engine automobile |
| JP2006199079A (en) * | 2005-01-18 | 2006-08-03 | Fuji Heavy Ind Ltd | Control device of negative pressure pump for brake |
| JP4628799B2 (en) * | 2005-01-18 | 2011-02-09 | 富士重工業株式会社 | Control device for brake negative pressure pump |
| CN111219320A (en) * | 2019-11-29 | 2020-06-02 | 浙江爱特制冷设备有限公司 | Method for controlling vacuum pump through vacuum gauge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0228716B2 (en) | 1990-06-26 |
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