JPH02127724U - - Google Patents
Info
- Publication number
- JPH02127724U JPH02127724U JP3650189U JP3650189U JPH02127724U JP H02127724 U JPH02127724 U JP H02127724U JP 3650189 U JP3650189 U JP 3650189U JP 3650189 U JP3650189 U JP 3650189U JP H02127724 U JPH02127724 U JP H02127724U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- rotation speed
- engine
- negative pressure
- actuator
- 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
- 230000003584 silencer Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
第１図は本考案に係るエンジンの排気装置の好
適な一実施例を示す概略構成図、第２図は変形実
施例を示す概略構成図である。
１６……排気サイレンサー、１８……第１排出
管、２０……第２排出管、２２……開閉弁、２４
……負圧作動式のアクチユエータ、３０……バキ
ユームタンク（負圧源）、３４……電磁三方弁、
４０ｂ……ｂ接点式の電磁リレー（閉成状態保持
手段）、４２……制御器、４４……コンデンサー
（閉成状態保持手段）。
FIG. 1 is a schematic diagram showing a preferred embodiment of an engine exhaust system according to the present invention, and FIG. 2 is a schematic diagram showing a modified embodiment. 16...Exhaust silencer, 18...First exhaust pipe, 20...Second exhaust pipe, 22...Opening/closing valve, 24
... Negative pressure actuator, 30 ... Vacuum tank (negative pressure source), 34 ... Solenoid three-way valve,
40b...b-contact type electromagnetic relay (closed state holding means), 42...controller, 44...capacitor (closed state holding means).
Claims (1)
ンサーと、 前記第２排出管に設けられ該管路を開閉する開
閉弁と、 該開閉弁に取付けられ、負圧が作用されている
ときに該開閉弁を閉じさせるとともに負圧が作用
されていないときに前記開閉弁を開放させる負圧
作動式のアクチユエータと、 該アクチユエータに負圧源からの負圧と大気圧
とを適宜切替えて供給する電磁三方弁と、 該電磁三方弁の切替作動を少なくともエンジン
回転数に応じて制御し、エンジン回転が所定回転
数以下の時に前記アクチユエータを前記負圧源側
に連通させるとともに前記所定回転数以上のとき
に前記アクチユエータを大気側に連通させる制御
器と、 エンジンが停止されたときにその停止後少なく
とも所定時間前記開閉弁を閉成状態に保持する閉
成状態保持手段と、 を備えたことを特徴とするエンジンの排気装置
。[Claims for Utility Model Registration] An exhaust silencer having a first exhaust pipe and a second exhaust pipe; an on-off valve installed on the second exhaust pipe to open and close the pipe; a negative pressure operated actuator that closes the on-off valve when pressure is applied and opens the on-off valve when no negative pressure is applied; an electromagnetic three-way valve that appropriately switches and supplies air pressure; and a switching operation of the electromagnetic three-way valve that is controlled at least according to the engine rotation speed, and the actuator is communicated with the negative pressure source when the engine rotation is below a predetermined rotation speed. a controller that connects the actuator to the atmosphere side when the rotation speed is equal to or higher than the predetermined rotation speed; and a closed state holding means that maintains the on-off valve in the closed state for at least a predetermined period of time after the engine is stopped. An engine exhaust system characterized by comprising: and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989036501U JPH0648095Y2 (en) | 1989-03-31 | 1989-03-31 | Engine exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989036501U JPH0648095Y2 (en) | 1989-03-31 | 1989-03-31 | Engine exhaust system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02127724U true JPH02127724U (en) | 1990-10-22 |
| JPH0648095Y2 JPH0648095Y2 (en) | 1994-12-07 |
Family
ID=31542785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989036501U Expired - Lifetime JPH0648095Y2 (en) | 1989-03-31 | 1989-03-31 | Engine exhaust system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648095Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126020U (en) * | 1985-01-29 | 1986-08-07 |
-
1989
- 1989-03-31 JP JP1989036501U patent/JPH0648095Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126020U (en) * | 1985-01-29 | 1986-08-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648095Y2 (en) | 1994-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63126683U (en) | ||
| JPH02127724U (en) | ||
| JPS58142336U (en) | Brake device | |
| JPH0433390Y2 (en) | ||
| JPH0351127U (en) | ||
| JP2524058Y2 (en) | Exhaust brake device | |
| JPS58132143U (en) | Exhaust brake device | |
| JPH0515549Y2 (en) | ||
| JPS59177548U (en) | Tractor/trailer brake device | |
| JPS6329095B2 (en) | ||
| JPH0393916U (en) | ||
| JPS62158274U (en) | ||
| JPS61165871U (en) | ||
| JPS626440U (en) | ||
| JPS6234265U (en) | ||
| JPS6322354U (en) | ||
| JPH0182400U (en) | ||
| JPH0325685U (en) | ||
| JPH01174538U (en) | ||
| JPS6338609U (en) | ||
| JPH0398188U (en) | ||
| JPH0363721U (en) | ||
| JPH03130798U (en) | ||
| JPH01147772U (en) | ||
| JPS6090537U (en) | Throttle valve opening control device |