JPS5737153A - Rock up type automatic gearbox - Google Patents

Rock up type automatic gearbox

Info

Publication number
JPS5737153A
JPS5737153A JP10914180A JP10914180A JPS5737153A JP S5737153 A JPS5737153 A JP S5737153A JP 10914180 A JP10914180 A JP 10914180A JP 10914180 A JP10914180 A JP 10914180A JP S5737153 A JPS5737153 A JP S5737153A
Authority
JP
Japan
Prior art keywords
rock
vehicle speed
speed
relieved
power
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
Application number
JP10914180A
Other languages
Japanese (ja)
Other versions
JPS597864B2 (en
Inventor
Masaaki Suga
Yoshiro Morimoto
Hideo Hamada
Masaaki Futaki
Sunao Suzuki
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 JP10914180A priority Critical patent/JPS597864B2/en
Publication of JPS5737153A publication Critical patent/JPS5737153A/en
Publication of JPS597864B2 publication Critical patent/JPS597864B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Fluid Gearings (AREA)

Abstract

PURPOSE: To provide an effective engine brake during coasting drive by enabling to change a rock up relieved vehicle speed during coasting drive under power off to a lower speed side than an ordinal rock up relieved vehicle speed.
CONSTITUTION: A rock up type automatic gear box equipped with a torque converter with a direct clutch is provided with a gear position decision circuit 7 and a vehicle comparison circuit 13 which compares a rock up vehicle speed for the first speed to the third speed stored in itself to speed signal of a vehicle speed sensor 8. When the vehicle speed exceeds the rock up vehicle speed, the torque converter is placed into rock up state. In this case, a power off detector 26 such as an accelerator switch is provided. During power off drive, when the switch 26 is turned on, the electric current fails to flow to transistors 14 and 15, increasing the input voltage of the vehicle speed comparison circuit 13, thereby changing the rock up relieved vehicle speed to the lower speed side than the vehicle speed under power on state.
COPYRIGHT: (C)1982,JPO&Japio
JP10914180A 1980-08-11 1980-08-11 Lock-up automatic transmission Expired JPS597864B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10914180A JPS597864B2 (en) 1980-08-11 1980-08-11 Lock-up automatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10914180A JPS597864B2 (en) 1980-08-11 1980-08-11 Lock-up automatic transmission

Publications (2)

Publication Number Publication Date
JPS5737153A true JPS5737153A (en) 1982-03-01
JPS597864B2 JPS597864B2 (en) 1984-02-21

Family

ID=14502633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10914180A Expired JPS597864B2 (en) 1980-08-11 1980-08-11 Lock-up automatic transmission

Country Status (1)

Country Link
JP (1) JPS597864B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977164A (en) * 1982-10-21 1984-05-02 Mazda Motor Corp Automatic speed change gear fitted with lockup
JPS59137658A (en) * 1983-01-27 1984-08-07 Mazda Motor Corp Controller for lock-up of automatic speed change gear

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977164A (en) * 1982-10-21 1984-05-02 Mazda Motor Corp Automatic speed change gear fitted with lockup
JPS59137658A (en) * 1983-01-27 1984-08-07 Mazda Motor Corp Controller for lock-up of automatic speed change gear
JPS629776B2 (en) * 1983-01-27 1987-03-02 Matsuda Kk

Also Published As

Publication number Publication date
JPS597864B2 (en) 1984-02-21

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