JPS6447679A - Four-wheel steering gear - Google Patents
Four-wheel steering gearInfo
- Publication number
- JPS6447679A JPS6447679A JP62205548A JP20554887A JPS6447679A JP S6447679 A JPS6447679 A JP S6447679A JP 62205548 A JP62205548 A JP 62205548A JP 20554887 A JP20554887 A JP 20554887A JP S6447679 A JPS6447679 A JP S6447679A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pilot chamber
- spool
- side port
- orifice
- 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
Links
Abstract
PURPOSE:To prevent front and rear wheels in high speed travelling from a wrong operation of steering in the opposite phases by making pilot pressure for changing over a phase mode valve proportional to vehicle speed. CONSTITUTION:A phase mode change-over valve VD has a spool 38 disposed slidably in a main body 37 while one end of the spool 38 is located adjacent a pilot chamber 35 and the other end adjacent a pilot chamber 36. In the pilot chamber 35 is disposed a spring 39 pressing the spool 38. The pilot chamber 35 is connected to the downstream side of an orifice 34 and the pilot chamber 36 to the upstream side of orifice 34. The upstream side port 40 of said valve VD is connected to the downstream side port 11 of a rear wheel controlling valve V2 and the upstream side port 41 to the downstream side port 12 of said valve V2. As vehicle speed is increased, the discharge of a pump P2 is increased so that differential pressure before and behind the orifice 34 is increased and the spool 38 is moved to change over said change-over valve VD to a same mode position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205548A JPS6447679A (en) | 1987-08-19 | 1987-08-19 | Four-wheel steering gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205548A JPS6447679A (en) | 1987-08-19 | 1987-08-19 | Four-wheel steering gear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6447679A true JPS6447679A (en) | 1989-02-22 |
Family
ID=16508714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62205548A Pending JPS6447679A (en) | 1987-08-19 | 1987-08-19 | Four-wheel steering gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6447679A (en) |
-
1987
- 1987-08-19 JP JP62205548A patent/JPS6447679A/en active Pending
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