JPS5680546A - Trouble warning device of automatic speed change gear for vehicle - Google Patents
Trouble warning device of automatic speed change gear for vehicleInfo
- Publication number
- JPS5680546A JPS5680546A JP15607179A JP15607179A JPS5680546A JP S5680546 A JPS5680546 A JP S5680546A JP 15607179 A JP15607179 A JP 15607179A JP 15607179 A JP15607179 A JP 15607179A JP S5680546 A JPS5680546 A JP S5680546A
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- torque
- automatic speed
- value
- change gear
- 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 Transmission Device (AREA)
Abstract
PURPOSE: To previously inform an abnormal state of an automatic speed change gear to the driver, by continuously measuring speed change time of the automatic speed change device at a constant degree of throttle opening.
CONSTITUTION: An analog value of output torque detected by a torque converter 1 mounted to an output shaft 15 of an automatic speed change gear 16 is converted into a digital value through an AD converter 2, feed into a torque equalizer 3 for a given period and converted into an average value of torque. A subtracter 5 makes subtraction between the average value of torque and the same value stored in a memory 4 a certain time before, and transmits the appropriate output. While, an analog value of throttle opening detected by a detecting device 7 is converted into a digital value through an AD converter 8, and a difference between throttle openings at every specified time is detected in a subtracter 10. Then, a comparator 13 compares a speed change time with that corresponding to a digital signal of throttle opening, and an output is transmitted to a warning circuit 14, in accordance with the result.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15607179A JPS5680546A (en) | 1979-11-30 | 1979-11-30 | Trouble warning device of automatic speed change gear for vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15607179A JPS5680546A (en) | 1979-11-30 | 1979-11-30 | Trouble warning device of automatic speed change gear for vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5680546A true JPS5680546A (en) | 1981-07-01 |
JPS634058B2 JPS634058B2 (en) | 1988-01-27 |
Family
ID=15619661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15607179A Granted JPS5680546A (en) | 1979-11-30 | 1979-11-30 | Trouble warning device of automatic speed change gear for vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5680546A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60222328A (en) * | 1984-04-18 | 1985-11-06 | Hitachi Ltd | Transmission controller |
JPS6220941A (en) * | 1985-07-19 | 1987-01-29 | Toshiba Seiki Kk | Torque transmission method and device therefor |
US5113720A (en) * | 1987-06-24 | 1992-05-19 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling gear box |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55132451A (en) * | 1979-04-03 | 1980-10-15 | Nissan Motor Co Ltd | Speed change control device for automatic speed changer |
-
1979
- 1979-11-30 JP JP15607179A patent/JPS5680546A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55132451A (en) * | 1979-04-03 | 1980-10-15 | Nissan Motor Co Ltd | Speed change control device for automatic speed changer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60222328A (en) * | 1984-04-18 | 1985-11-06 | Hitachi Ltd | Transmission controller |
JPS6220941A (en) * | 1985-07-19 | 1987-01-29 | Toshiba Seiki Kk | Torque transmission method and device therefor |
US5113720A (en) * | 1987-06-24 | 1992-05-19 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling gear box |
Also Published As
Publication number | Publication date |
---|---|
JPS634058B2 (en) | 1988-01-27 |
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