JPS6479460A - Speed change control device for automatic transmission - Google Patents

Speed change control device for automatic transmission

Info

Publication number
JPS6479460A
JPS6479460A JP23403287A JP23403287A JPS6479460A JP S6479460 A JPS6479460 A JP S6479460A JP 23403287 A JP23403287 A JP 23403287A JP 23403287 A JP23403287 A JP 23403287A JP S6479460 A JPS6479460 A JP S6479460A
Authority
JP
Japan
Prior art keywords
abnormality
speed change
shift
vehicle
control device
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
Application number
JP23403287A
Other languages
Japanese (ja)
Inventor
Haruyoshi Hisamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP23403287A priority Critical patent/JPS6479460A/en
Publication of JPS6479460A publication Critical patent/JPS6479460A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To prevent the quick start or quick acceleration of a vehicle at an abnormality and secure the safety by providing a shift valve switching means operated by an abnormality detection signal and fixing a shift valve at the maximum speed stage position. CONSTITUTION:The speed change control device 10 of an automatic transmission turns the first and second solenoid valves 36, 38 on or off for the speed change along the preset shift pattern. When the abnormality detecting means 42 of a control circuit 40 detects an abnormality at the vehicle travel, the first solenoid valve 35 is turned on, the second solenoid valve 38 is turned off, both the first and second shift valves 12 and 14 are moved upward and fixed at the fourth speed which is the highest speed stage, the gear ratio is set to the minimum state, and the torque transferred from an engine to driving wheels is made minimum. The quick start or quick acceleration of a vehicle is prevented when an abnormality detection signal is generated, and the riding comfortableness and safety can be secured.
JP23403287A 1987-09-18 1987-09-18 Speed change control device for automatic transmission Pending JPS6479460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23403287A JPS6479460A (en) 1987-09-18 1987-09-18 Speed change control device for automatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23403287A JPS6479460A (en) 1987-09-18 1987-09-18 Speed change control device for automatic transmission

Publications (1)

Publication Number Publication Date
JPS6479460A true JPS6479460A (en) 1989-03-24

Family

ID=16964492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23403287A Pending JPS6479460A (en) 1987-09-18 1987-09-18 Speed change control device for automatic transmission

Country Status (1)

Country Link
JP (1) JPS6479460A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229434A (en) * 1985-07-29 1987-02-07 Fujitsu Ten Ltd Automatic speed change control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229434A (en) * 1985-07-29 1987-02-07 Fujitsu Ten Ltd Automatic speed change control device

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