WO2000015960A1 - Drucksensor für eine brennkraftmaschine - Google Patents
Drucksensor für eine brennkraftmaschine Download PDFInfo
- Publication number
- WO2000015960A1 WO2000015960A1 PCT/EP1999/005306 EP9905306W WO0015960A1 WO 2000015960 A1 WO2000015960 A1 WO 2000015960A1 EP 9905306 W EP9905306 W EP 9905306W WO 0015960 A1 WO0015960 A1 WO 0015960A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- pressure sensor
- internal combustion
- combustion engine
- exhaust gas
- Prior art date
Links
Classifications
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
-
- 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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
Definitions
- the invention relates to a pressure sensor for an internal combustion engine according to the preamble of claim 1.
- the pollutant emission from internal combustion engines can be improved by a method called exhaust gas recirculation.
- an exhaust gas recirculation valve is provided on the outlet side of the internal combustion engine, which controls an exhaust gas recirculation line which opens into the intake manifold on the inlet side of the internal combustion engine downstream of the throttle valve.
- exhaust gas recirculation valve When the exhaust gas recirculation valve is opened, exhaust gas is supplied to the intake air, thereby mainly reducing the NO ⁇ emissions of the internal combustion engine.
- the exhaust gas recirculation valve Since the exhaust gas recirculation valve is an exhaust-relevant component, its functionality in motor vehicles must be monitored based on legally existing regulations (OBD II). Malfunctions that occur must be saved in a fault memory for proof during customer service inspections.
- OBD II legally existing regulations
- a simple method for monitoring the exhaust gas recirculation valve is to arrange a corresponding pressure sensor in the intake manifold of the internal combustion engine in order to record the pressure change in the intake manifold when the exhaust gas recirculation valve is actuated.
- Such an arrangement of a pressure sensor on the intake manifold is very complex in terms of assembly and is not always possible for reasons of space.
- Another possibility is to arrange the pressure sensor in a connecting line branching off from the intake manifold, which leads to a pneumatic actuating element, for example a vacuum brake booster or a vacuum intake manifold.
- a pneumatic actuating element for example a vacuum brake booster or a vacuum intake manifold.
- the object of the invention is to provide a pressure sensor for an internal combustion engine, in which the above-mentioned. Disadvantages are avoided, the assembly of which is simple and inexpensive and which at the same time enables a reliable functional test.
- the essential idea of the invention is to arrange the pressure sensor in a connecting line to a fuel pressure regulator.
- a fuel pressure regulator is not a pneumatic consumer, i.e. there can be no sudden, accidental pressure changes in the connecting line to this fuel pressure regulator, which would lead to a falsification of the measured value during a functional test.
- a reliable functional test of the exhaust gas recirculation valve is thus possible.
- the internal combustion engine 1 On the inlet side, the internal combustion engine 1 has an intake manifold 5 in which a throttle valve 10 is arranged.
- the power machine 1 On the outlet side, the power machine 1 has an exhaust pipe 15, which leads to an exhaust system of the internal combustion engine 1 in a manner not shown.
- an exhaust gas recirculation valve 20 On the exhaust pipe 15, an exhaust gas recirculation valve 20 is arranged which controls an exhaust gas recirculation line 25 which opens into the intake pipe 5 downstream of the throttle valve 10.
- a connecting line 30 leads from the intake manifold 5 to a fuel pressure regulator 35.
- the fuel pressure regulator 35 is connected via a fuel return 37
- Fuel tank 39 connected. It regulates the fuel pressure in one
- Manifold 32 which also has a fuel pump 34 with the
- Fuel tank 39 is connected.
- the distributor bar 32 is used for
- a pressure sensor 40 is arranged according to the invention. From pressure sensor
- the control device 50 controls this via a control line 22
- a pressure PO prevails in the intake manifold 5 in front of the throttle valve 10, and a suppressor P after the throttle valve 10, depending on the position of the throttle valve 10 .
- the pressure P in the intake manifold 5 increases by a value ⁇ P.
- This change in pressure has a direct effect in the connecting line 30.
- This pressure change ⁇ P is registered with the aid of the pressure sensor 40. Since the connecting line 30 and in particular the fuel pressure regulator 35 only have a relatively small volume, there is no significant air flow for pressure adjustment. The pressure change thus has an immediate effect on the pressure sensor 40 and is therefore registered without delay.
- the pressure sensor 40 provides an unadulterated measurement signal of the pressure in the intake manifold P.
- Uncontrolled influences due to the accidental actuation of a pneumatic actuating element only have an insignificant influence on the measurement signal.
- Random pressure changes in the intake manifold 5 due to changes in the throttle valve angle are recognized by the control unit 50, which is part of the engine control unit, and can thus be taken into account when evaluating the measurement signal.
- a function test of the exhaust gas recirculation valve 20 is only to be carried out if there is no change in the angle of the throttle valve 10.
- the functional test is interrupted and repeated at a later point in time.
- the essential features of the invention are that the pressure sensor 40 is arranged in a connecting line 30, which leads from the intake manifold 5 to the fuel pressure regulator 35. On the one hand, this arrangement is simple in terms of assembly and at the same time enables a reliable functional check of the exhaust gas recirculation valve 20.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/786,669 US6698406B1 (en) | 1999-07-24 | 1999-07-24 | Pressure sensor for an internal combustion engine |
JP2000570463A JP2003535247A (ja) | 1998-09-11 | 1999-07-24 | 内燃機関のための圧力センサ |
BR9912854-3A BR9912854A (pt) | 1998-09-11 | 1999-07-24 | Sensor de pressão para um motor de combustão interna |
EP99944108A EP1121528A1 (de) | 1998-09-11 | 1999-07-24 | Drucksensor für eine brennkraftmaschine |
HU0103281A HUP0103281A3 (en) | 1998-09-11 | 1999-07-24 | Pressure sensor for an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19841657.1 | 1998-09-11 | ||
DE19841657A DE19841657C1 (de) | 1998-09-11 | 1998-09-11 | Anordnung mit einem Drucksensor für eine Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000015960A1 true WO2000015960A1 (de) | 2000-03-23 |
Family
ID=7880666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/005306 WO2000015960A1 (de) | 1998-09-11 | 1999-07-24 | Drucksensor für eine brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1121528A1 (de) |
JP (1) | JP2003535247A (de) |
CN (1) | CN1111254C (de) |
BR (1) | BR9912854A (de) |
DE (1) | DE19841657C1 (de) |
HU (1) | HUP0103281A3 (de) |
WO (1) | WO2000015960A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59188064A (ja) * | 1983-04-08 | 1984-10-25 | Isuzu Motors Ltd | 内燃エンジン用燃料供給装置 |
DE3322547A1 (de) * | 1983-06-23 | 1985-01-17 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Kraftstoff-zufuehrung einer brennkraftmaschine |
DE3738321A1 (de) * | 1986-11-07 | 1988-05-19 | Aisan Ind | Druckregelventil |
EP0621405A1 (de) * | 1993-04-20 | 1994-10-26 | Nippondenso Co., Ltd. | Kraftstoffeinspritzungs-Regeleinrichtung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3226849A1 (de) * | 1982-07-17 | 1984-03-22 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zum ueberwachen eines drucksensors |
JPH06229323A (ja) * | 1993-01-30 | 1994-08-16 | Suzuki Motor Corp | 排気ガス再循環装置の自己診断装置 |
DE19723210B4 (de) * | 1996-06-03 | 2005-04-28 | Nissan Motor | Steuervorrichtung für eine Brennkraftmaschine mit Abgasrückführung |
-
1998
- 1998-09-11 DE DE19841657A patent/DE19841657C1/de not_active Expired - Fee Related
-
1999
- 1999-07-24 BR BR9912854-3A patent/BR9912854A/pt not_active IP Right Cessation
- 1999-07-24 EP EP99944108A patent/EP1121528A1/de not_active Withdrawn
- 1999-07-24 JP JP2000570463A patent/JP2003535247A/ja active Pending
- 1999-07-24 HU HU0103281A patent/HUP0103281A3/hu unknown
- 1999-07-24 WO PCT/EP1999/005306 patent/WO2000015960A1/de not_active Application Discontinuation
- 1999-07-24 CN CN99809487A patent/CN1111254C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59188064A (ja) * | 1983-04-08 | 1984-10-25 | Isuzu Motors Ltd | 内燃エンジン用燃料供給装置 |
DE3322547A1 (de) * | 1983-06-23 | 1985-01-17 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Kraftstoff-zufuehrung einer brennkraftmaschine |
DE3738321A1 (de) * | 1986-11-07 | 1988-05-19 | Aisan Ind | Druckregelventil |
EP0621405A1 (de) * | 1993-04-20 | 1994-10-26 | Nippondenso Co., Ltd. | Kraftstoffeinspritzungs-Regeleinrichtung |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 051 (M - 361) 6 March 1985 (1985-03-06) * |
RADERMACHER B: "OPTIMIERTE KRAFTSTOFF-VERSORGUNGSSYSTEME SENKEN DEN VERBRAUCH", MTZ MOTORTECHNISCHE ZEITSCHRIFT,DE,FRANCKH'SCHE VERLAGSHANDLUNG,ABTEILUNG TECHNIK. STUTTGART, 1 January 1997 (1997-01-01), pages 74-76,78, XP000655257, ISSN: 0024-8525 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003535247A (ja) | 2003-11-25 |
EP1121528A1 (de) | 2001-08-08 |
CN1312888A (zh) | 2001-09-12 |
HUP0103281A2 (hu) | 2002-01-28 |
CN1111254C (zh) | 2003-06-11 |
HUP0103281A3 (en) | 2002-03-28 |
DE19841657C1 (de) | 2000-12-14 |
BR9912854A (pt) | 2001-05-08 |
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