JPS55103141A - Electronic control type automatic speed change gear - Google Patents
Electronic control type automatic speed change gearInfo
- Publication number
- JPS55103141A JPS55103141A JP1113279A JP1113279A JPS55103141A JP S55103141 A JPS55103141 A JP S55103141A JP 1113279 A JP1113279 A JP 1113279A JP 1113279 A JP1113279 A JP 1113279A JP S55103141 A JPS55103141 A JP S55103141A
- Authority
- JP
- Japan
- Prior art keywords
- change gear
- gear
- accelerating
- speed change
- level
- 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
- Gear-Shifting Mechanisms (AREA)
Abstract
PURPOSE: To automatically shift down the gear and to positively employ the engine braking only in the down-hill running when the engine braking is essential by a idle detecting means, a brake operation detecting means, and an acceleration judging means.
CONSTITUTION: When a car comes to down-hill running with the speed change gear set at the third gear and the manual valve of the automatic transmission gear set at D-range, and the driver released the accelerating pedal (idle switch 29 is closed) and stepped on the brake pedal (brake switch is closed), OR gates 52 and NOR gates 53 outputs L level and H level signals respectively as the accelerating signal G is larger than set accelerating signals GL and GH. Then, an FF circuit 56 sends L level signal to a NAND gate 43 so that the NAND gate 43 outputs H level signal to actuate a second/ third shifting solenoid 25 which has been idle during the running with the manual valve at the D-range position and the change gear set at the third gear.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1113279A JPS55103141A (en) | 1979-02-02 | 1979-02-02 | Electronic control type automatic speed change gear |
US06/116,849 US4350234A (en) | 1979-02-02 | 1980-01-30 | Automatic transmission system provided with a function of engine brake |
FR8002259A FR2448076A1 (en) | 1979-02-02 | 1980-02-01 | AUTOMATIC TRANSMISSION SYSTEM PROVIDED WITH A MOTOR BRAKE FUNCTION |
DE3003749A DE3003749C2 (en) | 1979-02-02 | 1980-02-01 | Automatic gearbox control |
GB8003642A GB2042105B (en) | 1979-02-02 | 1980-02-04 | Automatic transmission system provided with engine braking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1113279A JPS55103141A (en) | 1979-02-02 | 1979-02-02 | Electronic control type automatic speed change gear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55103141A true JPS55103141A (en) | 1980-08-07 |
JPS629774B2 JPS629774B2 (en) | 1987-03-02 |
Family
ID=11769481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1113279A Granted JPS55103141A (en) | 1979-02-02 | 1979-02-02 | Electronic control type automatic speed change gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55103141A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6152453A (en) * | 1984-08-21 | 1986-03-15 | Aisin Warner Ltd | Automatic speed change gear for car |
JPS6155453A (en) * | 1984-08-24 | 1986-03-19 | Aisin Warner Ltd | Controller of electronic control automatic speed changer for vehicle |
US4671139A (en) * | 1986-01-27 | 1987-06-09 | General Motors Corporation | Clutch-to-clutch coast downshifting in a motor vehicle automatic transmission |
-
1979
- 1979-02-02 JP JP1113279A patent/JPS55103141A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6152453A (en) * | 1984-08-21 | 1986-03-15 | Aisin Warner Ltd | Automatic speed change gear for car |
JPS6155453A (en) * | 1984-08-24 | 1986-03-19 | Aisin Warner Ltd | Controller of electronic control automatic speed changer for vehicle |
US4671139A (en) * | 1986-01-27 | 1987-06-09 | General Motors Corporation | Clutch-to-clutch coast downshifting in a motor vehicle automatic transmission |
Also Published As
Publication number | Publication date |
---|---|
JPS629774B2 (en) | 1987-03-02 |
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