JPH0421709U - - Google Patents
Info
- Publication number
- JPH0421709U JPH0421709U JP6336290U JP6336290U JPH0421709U JP H0421709 U JPH0421709 U JP H0421709U JP 6336290 U JP6336290 U JP 6336290U JP 6336290 U JP6336290 U JP 6336290U JP H0421709 U JPH0421709 U JP H0421709U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- oil
- hydraulic oil
- hydraulic
- 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
- 239000003921 oil Substances 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案の一実施例を示す概略構成図、
第２図は従来のパワータード装置付エンジンの概
略構成図、第３図は第２図におけるパワータード
弁開閉制御装置の要部拡大断面図である。
１０……シリンダ、１２……ピストン、１４…
…シリンダヘツド、２０……給気弁、２２……排
気弁、２８……パワータード弁、３８……アクチ
ユエータ、４０……圧油通路、４２……高圧オイ
ルポンプ、４４……作動油通路、４６……オイリ
ギヤラリ、５０……圧力制御装置、８０……減圧
弁装置。
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
FIG. 2 is a schematic configuration diagram of a conventional engine with a power tard device, and FIG. 3 is an enlarged sectional view of a main part of the power tard valve opening/closing control device in FIG. 10...Cylinder, 12...Piston, 14...
... Cylinder head, 20 ... Air supply valve, 22 ... Exhaust valve, 28 ... Powertard valve, 38 ... Actuator, 40 ... Pressure oil passage, 42 ... High pressure oil pump, 44 ... Hydraulic oil passage, 46 ... Oil gear, 50 ... Pressure control device, 80 ... Pressure reducing valve device.
Claims (1)
ンブレーキ走行時に開放されて制動効果を生起す
るパワータード弁、同パワータード弁を開閉する
油圧ピストン、同油圧ピストンに作動油を供給す
る高圧オイルポンプ、上記油圧ピストンと高圧オ
イルポンプとを接続する圧油通路に接続され、同
圧油通路内の作動油の圧力を上記エンジンブレー
キ走行時には高圧の第１圧力に、その他の運転状
態では低圧の第２圧力に制御する圧力制御装置、
及び上記圧油通路に接続され、同圧油通路内の作
動油が第２圧力のときは当該低圧作動油をシリン
ダヘツド内の動弁機構に供給し、また第１圧力の
ときは略第２圧力まで減圧して上記動弁機構に供
給する減圧弁装置を具備してなることを特徴とす
るパワータード装置付エンジン。 A powertard valve that is installed in an engine cylinder and is opened to produce a braking effect when the vehicle runs under engine braking; a hydraulic piston that opens and closes the powertard valve; a high-pressure oil pump that supplies hydraulic oil to the hydraulic piston; It is connected to a pressure oil passage that connects to a high pressure oil pump, and controls the pressure of the hydraulic oil in the same pressure oil passage to a high first pressure during engine braking and to a low second pressure during other operating conditions. pressure control device,
and is connected to the pressure oil passage, and when the hydraulic oil in the same pressure oil passage is at the second pressure, the low pressure hydraulic oil is supplied to the valve mechanism in the cylinder head, and when the hydraulic oil is at the first pressure, it is connected to the approximately second pressure. An engine equipped with a power tard device, characterized in that it is equipped with a pressure reducing valve device that reduces the pressure to a pressure and supplies the reduced pressure to the valve operating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6336290U JP2501602Y2 (en) | 1990-06-15 | 1990-06-15 | Engine with power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6336290U JP2501602Y2 (en) | 1990-06-15 | 1990-06-15 | Engine with power device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0421709U true JPH0421709U (en) | 1992-02-24 |
| JP2501602Y2 JP2501602Y2 (en) | 1996-06-19 |
Family
ID=31593339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6336290U Expired - Lifetime JP2501602Y2 (en) | 1990-06-15 | 1990-06-15 | Engine with power device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501602Y2 (en) |
-
1990
- 1990-06-15 JP JP6336290U patent/JP2501602Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2501602Y2 (en) | 1996-06-19 |
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