JPS57178918A - Vehicle air conditioner - Google Patents
Vehicle air conditionerInfo
- Publication number
- JPS57178918A JPS57178918A JP6601681A JP6601681A JPS57178918A JP S57178918 A JPS57178918 A JP S57178918A JP 6601681 A JP6601681 A JP 6601681A JP 6601681 A JP6601681 A JP 6601681A JP S57178918 A JPS57178918 A JP S57178918A
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- output
- compressor
- circuit
- turned
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/3208—Vehicle drive related control of the compressor drive means, e.g. for fuel saving purposes
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
PURPOSE:To make it possible to keep car room temperature constant by preventing the action of a thermoswitch circuit by a load detecting circuit when evaporator surface temperature is above the second set level in an air conditioner turning a compressor off when accelerating. CONSTITUTION:When a pressure switch 2 is turned on with acceleration, an operational amplifier 11 output becomes H to be supplied to an operational amplifier 20 of a timer circuit 4 as a trigger pulse, and thereby a pulse with the width T is supplied to the non-inverting input side of an operational amplifier 30 in a thermoswitch circuit 5 allowing its output to be saturated to an H level to turn the compressor off via a transistor 40. When evaporator surface temperature drastically rises in this way to reduce the resistance of a sensor 6, the output of an operational amplifier 44 changes to L to cause a diode 47 to be turned off to absorb the trigger pulse, thereby allowing the output of the timer circuit 4 to restore to the L. Hereby, the compressor is turned on via the transistor 40. Consequently, acceleration and slope-climbing are smoothly performed while car room temperature is rapidly cooled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6601681A JPS57178918A (en) | 1981-04-30 | 1981-04-30 | Vehicle air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6601681A JPS57178918A (en) | 1981-04-30 | 1981-04-30 | Vehicle air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57178918A true JPS57178918A (en) | 1982-11-04 |
| JPS6247733B2 JPS6247733B2 (en) | 1987-10-09 |
Family
ID=13303709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6601681A Granted JPS57178918A (en) | 1981-04-30 | 1981-04-30 | Vehicle air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57178918A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976413U (en) * | 1982-11-16 | 1984-05-24 | 株式会社ボッシュオートモーティブ システム | Control device for vehicle air conditioning compressor |
| JPS6057417U (en) * | 1983-09-27 | 1985-04-22 | マツダ株式会社 | Control device for automotive cooling equipment |
| JPH01254420A (en) * | 1988-03-31 | 1989-10-11 | Nissan Motor Co Ltd | Air conditioner for vehicle |
-
1981
- 1981-04-30 JP JP6601681A patent/JPS57178918A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976413U (en) * | 1982-11-16 | 1984-05-24 | 株式会社ボッシュオートモーティブ システム | Control device for vehicle air conditioning compressor |
| JPS6146016Y2 (en) * | 1982-11-16 | 1986-12-24 | ||
| JPS6057417U (en) * | 1983-09-27 | 1985-04-22 | マツダ株式会社 | Control device for automotive cooling equipment |
| JPH01254420A (en) * | 1988-03-31 | 1989-10-11 | Nissan Motor Co Ltd | Air conditioner for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6247733B2 (en) | 1987-10-09 |
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