DE2821814C2 - Air suction system for motor vehicles - Google Patents
Air suction system for motor vehiclesInfo
- Publication number
- DE2821814C2 DE2821814C2 DE2821814A DE2821814A DE2821814C2 DE 2821814 C2 DE2821814 C2 DE 2821814C2 DE 2821814 A DE2821814 A DE 2821814A DE 2821814 A DE2821814 A DE 2821814A DE 2821814 C2 DE2821814 C2 DE 2821814C2
- Authority
- DE
- Germany
- Prior art keywords
- suction
- line
- pump
- jet pump
- air
- 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/08—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of non-mechanically driven auxiliary apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Jet Pumps And Other Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
Die Erfindung bezieht sich auf eine Saugluftanlage für Kraftfahrzeuge gemäß Oberbegriff des Patentanspruches 1.The invention relates to a suction air system for motor vehicles according to the preamble of the patent claim 1.
Aus der DE-AS 21 12 804 ist es bei einer gattungsgemäßen Saugluftanlage bekannt, die Aggregate zum Schutz vor einer Beaufschlagung mit Druckluft durch Rückschlagventile, welche bei Druckluft die Verbindung zwischen der Saugluftpumpe und den Aggregaten absperren, abzusichern. Hierbei ist zu berücksichtigen, daß insbesondere durch die Verwendung einer Dieselbrennkraftmaschine zum Antrieb der Saugluftpumpe die Möglichkeit eines Rückwärtsanlaufens besteht, wodurch in Verbindung mit einer reversibel arbeitenden Saugluftpumpe, wie z. B. einer Kolbenpumpe dann Druckluft anstatt Saugluft ei zeugt wird.From DE-AS 21 12 804 it is known in a generic suction air system, the units for Protection against exposure to compressed air by check valves, which the connection with compressed air Shut off and secure between the suction air pump and the units. It is important to consider that in particular through the use of a diesel internal combustion engine to drive the suction air pump there is the possibility of reverse starting, which in connection with a reversible working Suction air pump, such as B. a piston pump then compressed air instead of suction air egg is generated.
Bei der gattungsgemäßen Saugluftanlage ist daherIn the generic suction air system is therefore
von Mcinhfpil Haß Hp! pinprn R'^^"'ärtSSnlsllfsri dsr en Dieselbrennkraftmaschine und einer damit verbundenen Drucklufterzeugung die für die Betätigung der Aggregate erforderliche Saugluft fehlt, wodurch die Funktionsfähigkeit der Aggregate in erheblichem Maße beeinträchtigt ist. by Mcinhfpil Hate Hp! pinprn R '^^ "' ärtSSnlsllfsri dsr en diesel internal combustion engine and an associated compressed air generation, the suction air required to operate the units is missing, which significantly affects the functionality of the units.
Der Erfindung liegt daher die Aufgabe zugrunde, die aus der DE-AS 21 12 804 bekannte Saugluftanlage so zu gestalten, daß auch bei Erzeugung von Druckluft seitens der Saugluftpumpe anstelle von Druckluft im Leitungssystem für die saugluftbetriebenen Aggregate Saugluft erzeugt wird.The invention is therefore based on the object of the suction air system known from DE-AS 21 12 804 in such a way make that even when generating compressed air on the part of the suction air pump instead of compressed air in the line system suction air is generated for the suction air-operated units.
Die Aufgabe ist erfindungsgemäß durch die im kennzeichnenden Teil des Patentanspruches 1 angegebenen Merkmale gelöstThe object is according to the invention by the characterizing Part of claim 1 specified features solved
Durch die Erfindung wird vorteilhaft erreicht, daß trotz Rückwärtslaufes der Brennkraftmaschine wichtige Aggregate funktionsfähig bleiben, so daß z. B. gebremst und die Brennkraftmaschine abgestellt werden kann.The invention advantageously ensures that, despite the internal combustion engine running backwards, important Units remain functional, so that, for. B. braked and the engine can be turned off.
In Ausgestaltung des Erfindungsgegenstandes kann die zum Einlaß der Strahlpumpe führende Leitung und die an die Saugstelle der Strahlpumpe angeschlossene Leitung durch eine mit einem Rückschlagventil versehene Leitung miteinander verbunden sein. Diese Anordnung empfiehlt sich dann, wenn die an der Saugstelle der Strahlpumpe mündende Leitung oder die Saugstelle selbst einen verhältnismäßig kleinen Querschnitt aufweisen. In an embodiment of the subject matter of the invention, the line leading to the inlet of the jet pump and the line connected to the suction point of the jet pump through one provided with a check valve Line must be connected to each other. This arrangement is recommended when the at the suction point of the Jet pump opening line or the suction point itself have a relatively small cross section.
Die Saugstelle der Strahlpumpe kann weiterhin mit einem bevorzugten Aggregat, z. B. mit der Abstellvorrichtung für die Kraftstoff-Einspritzpumpe, unter Einschaltung einer Drossel verbunden sein und das zu den übrigen Aggregaten führende Leitungssystem kann unter Einschaltung eines Rückschlagventiles an die zum Einlaß der Strahlpumpe führende Leitung angeschlossen sein.The suction point of the jet pump can continue to be equipped with a preferred unit, e.g. B. with the parking device for the fuel injection pump, with the activation of a throttle, and that to the The line system leading to other units can be connected to the for Be connected to the inlet of the jet pump leading line.
Wenn man als bevorzugtes Aggregat die Abstellvorrichtung für die Kraftstoff-Einspritzpumpe ansieht und davon ausgeht, daß ein Rückwärtslauf der Brennkraftmaschine nur bei stehendem Fahrzeug auftritt und die Fahrzeugbremse nicht benötigt wird, ist es möglich, durch Betrieb der Abstellvorrichtung die Brennkraftmaschine sogleich abzustellen. Dadurch werden Lagerschäden vermieden, die dann auftreten, wenn die mit der Brennkraftmaschine rückwärts taufende ölpumpe öl aus den Lagern saugen würde.If you prefer the storage device looks for the fuel injection pump and assumes that the internal combustion engine is running backwards only occurs when the vehicle is stationary and the vehicle brake is not required, it is possible immediately shut down the internal combustion engine by operating the shutdown device. This will cause bearing damage avoided, which then occur when the oil pump blasting backwards with the internal combustion engine oil would suck out of the camps.
In der Zeichnung ist der Gegenstand der Erfindung in drei Ausführungsbeispielen schematisch dargestellt.In the drawing, the subject matter of the invention is shown schematically in three exemplary embodiments.
Nach Fi g. 1 ist eine von einer Diesel-Brennkfaftmaschine angetriebene Saugluftpumpe 1 zur Erzeugung von Saugluft durch eine Leitung 2 mit einer unterdruckverstärkten Bremsanlage 3 verbunden. Ein Rückschlagventil 4 in der Leitung 2 vor der Bremsanlage 3 dient zur Absicherung der Bremsanlage. Von der Leitung 2 zweigt zwischen der Saugluftpumpe 1 und dem Rückschlagventil 4 eine Leitung 5 ab, die sich in den Leitungen 6, 7 fortsetzt. Die Leitung 6 führt zu einer Abstellvorrichtung 8 für die Kraftstoff-Einspritzpumpe der Brennkraftmaschine und die Leitung 7 führt zu einem sonstigen Aggregat 9, das mit Saugluft betrieben wird. In der Leitung 5 ist eine Drossel 10 angeordnet. Sie dient zur Absicherung der Bremsanlage gegen Leckstellen an den Aggregaten 8 und 9.According to Fi g. 1 is one of a diesel fuel engine driven suction air pump 1 for generating suction air through a line 2 with a vacuum-boosted Brake system 3 connected. A check valve 4 in line 2 upstream of the brake system 3 is used to Securing the braking system. From the line 2 branches off between the suction air pump 1 and the check valve 4 from a line 5, which continues in lines 6, 7. The line 6 leads to a storage device 8 for the fuel injection pump of the internal combustion engine and the line 7 leads to a other unit 9, which is operated with suction air. In the line 5, a throttle 10 is arranged. she serves to protect the brake system against leaks on units 8 and 9.
Um zu erreichen, daß bei einem Rückwärtslauf der Brennkraftmaschine und damit der Saugluftpumpe 1 trotzdem keine Druckluft, sondern Saugluft zu den Aggregaten 3, 8 und 9 gelangt, ist in die Leitung 2 eine Strahlpumpe 11 eingeschaltet, derart, daß der Einlaß 12In order to achieve that when the internal combustion engine and thus the suction air pump 1 Nevertheless, no compressed air, but suction air reaches the units 3, 8 and 9, there is a line 2 in the line Jet pump 11 switched on, so that the inlet 12
Saugstelle 13 mit dem zu den Aggregaten führenden Teil der Leitung 2 verbunden ist. An den Auslaß 14 ist eine Leitung 15 mit einem Rückschlagventil 16 angeschlossen. Suction point 13 is connected to the part of the line 2 leading to the units. At the outlet 14 is a line 15 connected to a check valve 16.
Bei normalem Betrieb der Saugluftpumpe 1 ist die Strahlpumpe 11 nicht in Betrieb. Sie wirkt bei geschlossenem Rückschlagventil 16 lediglich als ein Stück Vcrbindungsleitung in der Leitung 2. Wenn dagegen dieDuring normal operation of the suction air pump 1, the jet pump 11 is not in operation. It works when it is closed Check valve 16 only as a piece of connecting line in line 2. If, on the other hand, the
Saugluftpumpe 1 rückwärts läuft, saugt die erzeugte Druckluft in der Strahlpumpe 11 an der Saugstelle 13 Luft aus dem zu den Aggregaten 3, 8 und 9 führenden Teil der Leitung 2, so daß für diese Aggregs te Saugluft zur Verfügung steht Durch die Leitung 15 und über das Rückschlagventil 16 gelangt die Druckluft ins Freie.If the suction air pump 1 runs backwards, the compressed air generated in the jet pump 11 sucks at the suction point 13 Air from the leading to the units 3, 8 and 9 part of the line 2, so that for these units te suction air is available The compressed air is released through the line 15 and the check valve 16.
Das Ausführungsbeispiel nach Fig.2 entspricht in seinem Aufbau dem nach F i g. 1 bis auf den Umstand, daß der von der Saugluftpumpe 1 zu dem Einlaß 12 der Strahlpumpe U führende Teil der Leitung 2 mit dem an die Saugstelle 13 angeschlossenen Teil der Leitung 2 durch eine Leitung 17 verbunden ist, in die ein Rückschlagventil 18 eingeschaltet ist Diese Ausbildung ist dann von Vorteil, wenn die Saugstelle 13 oder der an diese angeschlossene Teil der Leitung 2 einen verhältnismäßig geringen Querschnitt aufweisen sollten.The construction of the embodiment according to FIG. 2 corresponds to that according to FIG. 1 except for the fact that the part of the line 2 leading from the suction air pump 1 to the inlet 12 of the jet pump U with the on the suction point 13 connected part of the line 2 is connected by a line 17 into which a check valve 18 is switched on This training is advantageous when the suction point 13 or the this connected part of the line 2 should have a relatively small cross section.
Bei dem Ausführungsbeispiel nach F i g. 3 ist der Einlaß 12 der Strahlpumpe 11 mittels einer Leitung 19 an die Leitung 2 angeschlossen, während an die Saugstelle 13 mittels einer Leitung 20 mit zwischengeschalteter Drossel 21 die Abstellvorrichtung 8 angeschlossen ist. Zwischen der Anschlußstelle der Leitung 19 an der Leitung 2 und der Abzweigung der Leitung 5 von der Leitung 2 ist ein Rückschlagventil 22 angeordnetIn the embodiment according to FIG. 3, the inlet 12 of the jet pump 11 is connected by means of a line 19 the line 2 connected, while to the suction point 13 by means of a line 20 with an interposed Throttle 21, the parking device 8 is connected. Between the connection point of the line 19 on the line 2 and the junction of the line 5 from the line 2, a check valve 22 is arranged
Bei Rückwärtslauf der Saugluftpumpe 1 und damit bei Betrieb der Strahlpumpe 11 wild allein die Abstellvorrichtung 8 mit Saugluft versorgt Die übrigen Aggregate 3 und 9 bleiben bei geschlossenem Rückschlagventil von der Versorgung mit Saugluft abgesperrt.When the suction air pump 1 is running backwards and thus when the jet pump 11 is in operation, only the parking device is used 8 supplied with suction air The remaining units 3 and 9 remain with the non-return valve closed shut off from the supply of suction air.
3030th
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
4545
5050
Claims (3)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2821814A DE2821814C2 (en) | 1978-05-19 | 1978-05-19 | Air suction system for motor vehicles |
IT48972/79A IT1115996B (en) | 1978-05-19 | 1979-05-08 | IMPROVEMENT IN SUCTION SYSTEMS FOR MOTOR VEHICLES WITH DIESEL ENGINES |
GB7916832A GB2022036B (en) | 1978-05-19 | 1979-05-15 | Vacuum installation for a motor vehivle |
FR7912590A FR2426171A1 (en) | 1978-05-19 | 1979-05-17 | SUCTION AIR SYSTEM FOR VEHICLES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2821814A DE2821814C2 (en) | 1978-05-19 | 1978-05-19 | Air suction system for motor vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2821814A1 DE2821814A1 (en) | 1979-11-22 |
DE2821814C2 true DE2821814C2 (en) | 1986-10-16 |
Family
ID=6039680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2821814A Expired DE2821814C2 (en) | 1978-05-19 | 1978-05-19 | Air suction system for motor vehicles |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2821814C2 (en) |
FR (1) | FR2426171A1 (en) |
GB (1) | GB2022036B (en) |
IT (1) | IT1115996B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0115254B1 (en) * | 1983-01-25 | 1987-01-21 | BENDIX ITALIA S.p.A. | Fluid distribution circuit in a vacuum system for motor vehicles |
DE3721611A1 (en) * | 1987-06-30 | 1989-01-19 | Alcatel Hochvakuumtechnik Gmbh | MECHANICAL VACUUM PUMP WITH A SPRING-LOADED CHECK VALVE |
JPH06187710A (en) * | 1992-12-16 | 1994-07-08 | Sony Magnescale Inc | Housing device for endless tape |
DE102008032242B4 (en) | 2008-07-01 | 2015-03-05 | Joma-Polytec Gmbh | Device for generating and providing a negative pressure, and ventilation valve |
CN108973963A (en) * | 2018-07-23 | 2018-12-11 | 四川江淮汽车有限公司 | A kind of the Motorized vacuum pump control system and method for electric car |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1853838A (en) * | 1928-10-26 | 1932-04-12 | Ernest M White | Pressure increasing device |
US2949732A (en) * | 1957-09-30 | 1960-08-23 | Allis Chalmers Mfg Co | Vacuum control for fuel injection engines |
FR1341900A (en) * | 1962-12-19 | 1963-11-02 | Chicago Bridge & Iron Co | Improvements to devices intended to create a vacuum in an enclosure or a container |
DE2557022C2 (en) * | 1975-12-18 | 1983-08-11 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Vacuum system |
DE2727153A1 (en) * | 1977-06-16 | 1978-12-21 | Daimler Benz Ag | Pipe connector for vehicle vacuum assisted brakes - has restrictor integral with nozzle and expanded housing for non-return valves |
-
1978
- 1978-05-19 DE DE2821814A patent/DE2821814C2/en not_active Expired
-
1979
- 1979-05-08 IT IT48972/79A patent/IT1115996B/en active
- 1979-05-15 GB GB7916832A patent/GB2022036B/en not_active Expired
- 1979-05-17 FR FR7912590A patent/FR2426171A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
GB2022036B (en) | 1982-12-08 |
GB2022036A (en) | 1979-12-12 |
IT7948972A0 (en) | 1979-05-08 |
FR2426171B1 (en) | 1982-12-03 |
IT1115996B (en) | 1986-02-10 |
DE2821814A1 (en) | 1979-11-22 |
FR2426171A1 (en) | 1979-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |