JPS60162230U - Fuel injection amount control device for turbocharged diesel engine - Google Patents
Fuel injection amount control device for turbocharged diesel engineInfo
- Publication number
- JPS60162230U JPS60162230U JP5099984U JP5099984U JPS60162230U JP S60162230 U JPS60162230 U JP S60162230U JP 5099984 U JP5099984 U JP 5099984U JP 5099984 U JP5099984 U JP 5099984U JP S60162230 U JPS60162230 U JP S60162230U
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- diaphragm
- pressure source
- fuel injection
- diaphragm chamber
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来のターボチャーシトディーゼルエンジン
搭載車両の燃料噴射量制御装置の縦断面図、第２図は、
本考案の第１の実施例に係るターボチャーシトディーゼ
ルエンジン搭載車両の燃料噴射量制御装置の縦断面図、
第３図は、本考案の第２の実施例に係るターボチャーシ
トディーゼルエンジン搭載車両の燃料噴射量制御装置の
縦断面図、第４図は、本考案の第３の実施例に係るター
ボチャーシトディーゼルエンジン搭載車両の燃料噴射量
制御装置の縦断面図である。Fig. 1 is a vertical cross-sectional view of a fuel injection amount control device for a conventional turbocharged diesel engine vehicle, and Fig. 2 is
A longitudinal sectional view of a fuel injection amount control device for a vehicle equipped with a turbocharged diesel engine according to a first embodiment of the present invention,
FIG. 3 is a longitudinal sectional view of a fuel injection amount control device for a vehicle equipped with a turbocharged diesel engine according to a second embodiment of the present invention, and FIG. 4 is a longitudinal sectional view of a fuel injection amount control device according to a third embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a fuel injection amount control device for a vehicle equipped with a Cito diesel engine.
Claims (1)
装置と、高地における車両の発進状態を検出して出力す
る車両発進状態検出装置と、該車” 両発進状態検出装
置の出力信号を受けて負圧を切り換える負圧切り換え装
置とから構成されており、前記第１の定負圧源と前記第
２の定負圧源とは大気圧の変化にかかわらず常に一定の
強さの負圧を供給可能とされており、前記第２の定負圧
源の負圧は前記第１の定負圧源の負圧よりも強くされて
おり、前記燃料噴射量可変装置はダイヤフラム装置を備
えており、該ダイヤフラム装置はダイヤフラムの動きに
よって燃料噴射ポンプのスピルリングを駆動可能とされ
ており、前記ダイヤフラム装置はダイヤフラムケース内
が前記ダイヤフラムによって第１のダイヤフラム室と第
２のダイヤフラム室とに区画されており、該第１のダイ
ヤフラム室はターボチャーシトディーゼルエンジンのタ
ーボチャージャ下流の吸気マニホールドに常時連通され
ており、前記第２のダイヤフラム室は前記負圧切り換え
装置によって前記第１の定負圧源或いは前記第２の定負
圧源に選択的に連通可能とされており、前記ダイヤフラ
ムは前記第１のダイヤフラム室の圧力と前記第２のダイ
ヤフラム室の圧力とのバランスによって変位可能とされ
ており、前記ダイヤフラムが前記第１のダイヤフラム室
の容積を小さくする方向に変位したときは前記スピルリ
ングは燃料噴射量を減少する方向に移動され、前記ダイ
ヤフラムが前記第１のダイヤフラム室の容積を太き（す
る方向に変位したときは前記スピルリングは燃料噴射量
を増大する方向に移動され、前記負圧切り換え装置は、
前記車両発進状態検出装置の出力信号に基づいて、車両
通常運転時は前記第２のダイヤフラム室と前記第１の定
負圧源とを連通させており、少なくとも高地において車
両が発進するときは前記第２のダイヤフラム室と前記第
２の定負圧源とを連通させることを特徴とするターボチ
ャーシトディーゼルエンジン搭載車両の燃料噴射量制御
装置。a first constant negative pressure source, a second constant negative pressure source, a variable fuel injection amount device, a vehicle starting state detection device that detects and outputs a starting state of a vehicle at a high altitude, and a vehicle starting state of the vehicle. It is composed of a negative pressure switching device that switches the negative pressure in response to an output signal from the detection device, and the first constant negative pressure source and the second constant negative pressure source are always connected regardless of changes in atmospheric pressure. It is possible to supply negative pressure of a constant strength, and the negative pressure of the second constant negative pressure source is made stronger than the negative pressure of the first constant negative pressure source, and the fuel injection amount is variable. The device includes a diaphragm device, and the diaphragm device is capable of driving a spill ring of the fuel injection pump by movement of the diaphragm, and the diaphragm device has a diaphragm case in which a first diaphragm chamber and a second diaphragm chamber are separated by the diaphragm. The first diaphragm chamber is always in communication with the intake manifold downstream of the turbocharger of the turbocharged diesel engine, and the second diaphragm chamber is divided into two diaphragm chambers by the negative pressure switching device. The diaphragm can selectively communicate with the first constant negative pressure source or the second constant negative pressure source, and the diaphragm maintains a balance between the pressure in the first diaphragm chamber and the pressure in the second diaphragm chamber. When the diaphragm is displaced in the direction of decreasing the volume of the first diaphragm chamber, the spill ring is moved in the direction of decreasing the fuel injection amount, and the diaphragm is displaced in the direction of decreasing the volume of the first diaphragm chamber. When the volume of the diaphragm chamber is increased (increasing the volume), the spill ring is moved in the direction of increasing the fuel injection amount, and the negative pressure switching device is configured to
Based on the output signal of the vehicle starting state detection device, the second diaphragm chamber and the first constant negative pressure source are communicated during normal vehicle operation, and at least when the vehicle starts at a high altitude, the second diaphragm chamber is communicated with the first constant negative pressure source. A fuel injection amount control device for a vehicle equipped with a turbocharged diesel engine, characterized in that a second diaphragm chamber and the second constant negative pressure source are communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5099984U JPS60162230U (en) | 1984-04-06 | 1984-04-06 | Fuel injection amount control device for turbocharged diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5099984U JPS60162230U (en) | 1984-04-06 | 1984-04-06 | Fuel injection amount control device for turbocharged diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60162230U true JPS60162230U (en) | 1985-10-28 |
| JPH0324843Y2 JPH0324843Y2 (en) | 1991-05-30 |
Family
ID=30569652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5099984U Granted JPS60162230U (en) | 1984-04-06 | 1984-04-06 | Fuel injection amount control device for turbocharged diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60162230U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123322A (en) * | 1979-03-07 | 1980-09-22 | Bosch Gmbh Robert | Controller for internal combustion engine |
| JPS5881336U (en) * | 1981-11-30 | 1983-06-02 | いすゞ自動車株式会社 | Device for improving engine startability and vehicle starting performance |
| JPS5937237A (en) * | 1982-08-25 | 1984-02-29 | Toyota Motor Corp | Fuel injection rate controlling apparatus for diesel engine with supercharger |
-
1984
- 1984-04-06 JP JP5099984U patent/JPS60162230U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123322A (en) * | 1979-03-07 | 1980-09-22 | Bosch Gmbh Robert | Controller for internal combustion engine |
| JPS5881336U (en) * | 1981-11-30 | 1983-06-02 | いすゞ自動車株式会社 | Device for improving engine startability and vehicle starting performance |
| JPS5937237A (en) * | 1982-08-25 | 1984-02-29 | Toyota Motor Corp | Fuel injection rate controlling apparatus for diesel engine with supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0324843Y2 (en) | 1991-05-30 |
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