JPS5779351A - Erroneous function preventive device for hydraulic speed change gear for vehicle - Google Patents

Erroneous function preventive device for hydraulic speed change gear for vehicle

Info

Publication number
JPS5779351A
JPS5779351A JP15515580A JP15515580A JPS5779351A JP S5779351 A JPS5779351 A JP S5779351A JP 15515580 A JP15515580 A JP 15515580A JP 15515580 A JP15515580 A JP 15515580A JP S5779351 A JPS5779351 A JP S5779351A
Authority
JP
Japan
Prior art keywords
change gear
speed change
range
speed
valve
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
JP15515580A
Other languages
Japanese (ja)
Inventor
Sadanori Nishimura
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.)
Honda Motor Co Ltd
Original Assignee
Honda 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP15515580A priority Critical patent/JPS5779351A/en
Publication of JPS5779351A publication Critical patent/JPS5779351A/en
Pending legal-status Critical Current

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  • Control Of Transmission Device (AREA)

Abstract

PURPOSE: To prevent the abrupt braking of an engine or the breakdown of a speed change gear reliably by blocking the supply of the pressurized oil to an engaging device in a back drive system through a control valve for the car speed higher than predetermined level even when the manual valve of the speed change gear is changed to the back range.
CONSTITUTION: The hydraulic circuit in a speed change gear for controlling a front, two and three speed hydraulic clutches 4-1W4-3 is equipped with an oil pressure source 13, a manual valve 14 changeable between the advance range H, D, Reverse range R and the parking range P, a servo valve 15 for changing between the advance and back, and a shift valve 16. Furthermore said circuit 12 is equipped with a car speed responsive control valve 23 for blocking the supply of the pressurized oil to an engaging device which functions at the speed higher than predetermined level to establish the back drive system 3-R. Consequently at the speed higher than predetermined level, said back drive system 3-R is established even if the manual valve 14 is changed to R range.
COPYRIGHT: (C)1982,JPO&Japio
JP15515580A 1980-11-06 1980-11-06 Erroneous function preventive device for hydraulic speed change gear for vehicle Pending JPS5779351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15515580A JPS5779351A (en) 1980-11-06 1980-11-06 Erroneous function preventive device for hydraulic speed change gear for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15515580A JPS5779351A (en) 1980-11-06 1980-11-06 Erroneous function preventive device for hydraulic speed change gear for vehicle

Publications (1)

Publication Number Publication Date
JPS5779351A true JPS5779351A (en) 1982-05-18

Family

ID=15599727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15515580A Pending JPS5779351A (en) 1980-11-06 1980-11-06 Erroneous function preventive device for hydraulic speed change gear for vehicle

Country Status (1)

Country Link
JP (1) JPS5779351A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59208249A (en) * 1983-05-10 1984-11-26 Honda Motor Co Ltd Creep prevention device for vehicles with automatic transmission
US4488457A (en) * 1981-11-09 1984-12-18 Honda Giken Kogyo Kabushiki Kaisha Malfunction prevention device of automotive hydraulic transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4488457A (en) * 1981-11-09 1984-12-18 Honda Giken Kogyo Kabushiki Kaisha Malfunction prevention device of automotive hydraulic transmission
JPS59208249A (en) * 1983-05-10 1984-11-26 Honda Motor Co Ltd Creep prevention device for vehicles with automatic transmission

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