EP0130433B1 - Druckwellenlader mit einem Abgasabblasventil - Google Patents

Druckwellenlader mit einem Abgasabblasventil Download PDF

Info

Publication number
EP0130433B1
EP0130433B1 EP84106843A EP84106843A EP0130433B1 EP 0130433 B1 EP0130433 B1 EP 0130433B1 EP 84106843 A EP84106843 A EP 84106843A EP 84106843 A EP84106843 A EP 84106843A EP 0130433 B1 EP0130433 B1 EP 0130433B1
Authority
EP
European Patent Office
Prior art keywords
flap
exhaust gas
pressure wave
gas outlet
lever
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
Application number
EP84106843A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0130433A1 (de
Inventor
Andreas Mayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to AT84106843T priority Critical patent/ATE23912T1/de
Publication of EP0130433A1 publication Critical patent/EP0130433A1/de
Application granted granted Critical
Publication of EP0130433B1 publication Critical patent/EP0130433B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F13/00—Pressure exchangers
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/42—Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers

Definitions

  • the present invention relates to a pressure wave charger with an exhaust gas relief valve according to the preamble of patent claim 1.
  • a pressure wave supercharger for such engines is designed in such a way that it generates a boost pressure under load at the maximum engine speed that is higher than the boost pressure required to generate the permissible peak pressure without exhaust gas being blown off.
  • a high permissible boost pressure and thus a favorable torque curve and fuel consumption can then be achieved over a wide operating range.
  • Such a motor is elastic and a vehicle equipped with it can be driven lazily.
  • Blowing off exhaust gas does not need to be used in commercial vehicle engines, since these allow higher boost pressures and operate in a narrower speed range than passenger car engines. For commercial vehicle engines, it is therefore sufficient to design the pressure wave charger so that it delivers the maximum boost pressure in the desired operating range at which the peak value of the combustion pressure is still permissible.
  • a regulating device for regulating the boost pressure by deliberately blowing off the engine exhaust gas upstream of the pressure wave charger is the subject of an earlier patent application, see EP-A-0 123 990.
  • the valve member used in the device described therein, with which the blow-off channel, referred to in specialist circles as wastegate, more or less is released or closed, is a spring-loaded poppet valve.
  • the valve member is likewise spring-loaded and mushroom-shaped in the area of the sealing elements.
  • the location and the design of the opening of the blow-off channel in the exhaust outlet connection are selected so that the blow-off flow exerts an ejector effect in the latter and thereby supports the purging of the relaxed exhaust gases from the cells of the rotor.
  • an exhaust gas blow-off valve which redirects the transfer of excess high-pressure exhaust gas before it enters the exhaust gas outlet connection and thus prevents impermissibly high charging pressures.
  • a flap in the overflow channel is controlled by a membrane which is acted upon by high pressure exhaust gas on the one hand and a constant pressure on the other hand.
  • the constant pressure is selected so that the blow-off occurs when driving uphill, i.e. in higher altitudes, where the air pressure is lower than in valleys, than would be the case if the atmospheric air pressure prevailing at the respective height on one side of the membrane would work.
  • the boost pressure limitation is therefore independent of the respective atmospheric pressure and a higher boost pressure is available even when driving uphill.
  • the springs of the valves used there are subject to high levels of heat due to the exhaust gases passing them and thereby change their spring rate over time, so that the valve opens earlier.
  • the blow-off pressure in the charger and thus also the combustion pressures decrease. There is therefore a loss of power in the operating range of the engine mentioned at the beginning.
  • a flap valve has been used which does not require a spring in the blow-off area and the exhaust pressure or, as described in the mentioned EP-A-0 123 990 , operated by another suitable process pressure.
  • the adjusting force acts on a lever which is connected to the valve shaft in a torsionally rigid manner.
  • Such a flap valve is much cheaper to produce than the two known valve types mentioned above.
  • the relaxed exhaust gases after they have done their compression work, together with the mixture of air and exhaust gas that has formed in the mixing zone, ie in the area of the interface between air and exhaust gas, must be completely in be flushed out the exhaust outlet.
  • This purging is supported by the intake air, which enters the rotor cells on the side opposite the exhaust openings, thereby cooling the rotor at the same time.
  • the rotor in order to achieve satisfactory compression efficiency, the rotor must be cooled even further.
  • the pressure wave charger has to draw in more air than it delivers compressed charge air to the engine. These additionally drawn in air is called purge air and the ratio of purge air flow to charge air flow is the "purge level" of the pressure wave charger. This degree of flushing decreases with increasing engine speed and decreasing engine load.
  • Blow-off by wastegate affects a pressure wave charger, primarily, like a turbocharger, the overall efficiency and thus the specific fuel consumption, but not the flushing level. Because the rinsing energy is reduced in proportion to the compression energy.
  • the transverse component of the flow into the exhaust duct does not represent a serious impairment of the exhaust flow and thus the degree of purge.
  • the purge is significantly impaired by the larger cross-component of the inlet speed, and thus the compression efficiency is also impaired.
  • the object of the present invention defined in claim 1 is to avoid these disadvantages of the flap valve which is superior to the known valve types in terms of cheap manufacture and simple construction
  • Fig. 1 denotes a rotor housing, 2 an air housing and 3 a gas housing of a pressure wave charger.
  • the air housing 2 as can be seen in FIG. 2, has a horizontal air inlet nozzle 6 through which air is sucked in from atmospheric pressure, and a vertical charge air outlet nozzle 7, see FIG.
  • FIG. 3 and 4 show the gas housing 3 with the exhaust gas relief valve 8 in a longitudinal section or in a side elevation.
  • the blow-off valve 8 has a flap 9 as the closing element.
  • This is provided with a rivet pin 10 which sits with axial and radial play in a bore in a plate-shaped flap lever 11 and is held therein by means of a washer 12 and a rivet head 13.
  • the flap lever 11 is rigidly connected to the lower end of a flap shaft 14, e.g. by welding.
  • This flap shaft is guided in a bearing bush 15 and extends obliquely upwards through the gas housing 3 to the outside, where it is connected in a torsionally rigid manner to a lever 16.
  • This carries at its free end a bolt 17 for connecting a linkage, not shown, which connects the flap 9 to a control device mentioned at the beginning.
  • a restriction screen 19 is provided at a distance around the flap 9.
  • the current threads which, when using a cheap flap instead of a more expensive, but axially symmetrically flowed plate or mushroom valve, impair the undisturbed outflow in the exhaust duct and thus the flushing of the rotor cells mentioned at the outset, immediately after passing through the annular gap released by the flap in a direction parallel to the axis of the exhaust outlet connection 5 is forced, as is indicated by the dash-dotted streamlines in FIG. 3.
  • the dash-dotted representation of the streamlines was chosen because the flap 9 is shown in the closed state. So it is the streamlines that would occur with the flap open.
  • This restriction screen 19 does not surround the entire circumference of the flap 9, but part of the same as a semicircular ring coaxial with the flap 9, only half of its circumference.
  • the two ends of this semicircular ring then run out into a tip, the inner boundaries of which, viewed radially inward, run parallel to the longitudinal edges of the flap lever 11.
  • the area of the restriction screen that is left blank for the flap lever 11 does not degrade its directionality, since the narrowest point of the flap gap and the flow are located there is also forced in the axially parallel direction by the adjacent wall part of the exhaust gas outlet connection 5.
  • the axis of the restriction screen 20 is eccentric to the axis of the associated flap 21 by the distance x. This gives a larger outflow cross section after the flap gap.
  • the exhaust gas inlet connection 4 is not arranged on the upper side, as in the pressure wave charger according to FIGS. 1 and 2, but on the lower side.
  • restriction screen is also possible to design the restriction screen as a full circular ring, which thus coaxially or eccentrically surrounds the entire circumference of the flap.
  • the flap lever must then be cranked accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)
  • Fluid-Driven Valves (AREA)
  • Exhaust Gas After Treatment (AREA)
EP84106843A 1983-06-29 1984-06-15 Druckwellenlader mit einem Abgasabblasventil Expired EP0130433B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106843T ATE23912T1 (de) 1983-06-29 1984-06-15 Druckwellenlader mit einem abgasabblasventil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3561/83 1983-06-29
CH356183 1983-06-29

Publications (2)

Publication Number Publication Date
EP0130433A1 EP0130433A1 (de) 1985-01-09
EP0130433B1 true EP0130433B1 (de) 1986-11-26

Family

ID=4258656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106843A Expired EP0130433B1 (de) 1983-06-29 1984-06-15 Druckwellenlader mit einem Abgasabblasventil

Country Status (5)

Country Link
US (1) US4592330A (OSRAM)
EP (1) EP0130433B1 (OSRAM)
JP (1) JPS6013921A (OSRAM)
AT (1) ATE23912T1 (OSRAM)
DE (1) DE3461499D1 (OSRAM)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0240269Y2 (OSRAM) * 1985-02-19 1990-10-26
JPS62174536A (ja) * 1986-01-27 1987-07-31 Mazda Motor Corp 圧力波過給機付エンジン
DE3922491A1 (de) * 1988-08-23 1990-03-01 Asea Brown Boveri Gasdynamischer druckwellenlader mit abgas bypass
US6055965A (en) * 1997-07-08 2000-05-02 Caterpillar Inc. Control system for exhaust gas recirculation system in an internal combustion engine
ATE263912T1 (de) * 1997-08-29 2004-04-15 Swissauto Eng Sa Gasdynamische druckwellenmaschine
JP5939052B2 (ja) * 2012-06-26 2016-06-22 株式会社Ihi 過給機
WO2014141783A1 (ja) 2013-03-12 2014-09-18 日本バイリーン株式会社 無機ナノ繊維及びその製造方法
US10344666B2 (en) 2014-09-01 2019-07-09 Garrett Transportation I Inc. Turbine wastegate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080741A1 (de) * 1981-11-30 1983-06-08 BBC Aktiengesellschaft Brown, Boveri & Cie. Gasdynamische Druckwellenmaschine mit Abgasbypass

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800120A (en) * 1953-11-30 1957-07-23 Jendrassik Developments Ltd Pressure exchangers
GB775271A (en) * 1953-12-11 1957-05-22 Jendrassik Dev Ltd Improvements relating to pressure exchangers
US2836346A (en) * 1955-06-17 1958-05-27 Jendrassik Developments Ltd Pressure exchangers
CH349448A (de) * 1955-06-17 1960-10-15 Jendrassik Developments Limite Druckaustauscher
CH351141A (de) * 1956-03-29 1960-12-31 Brian Spalding Dudley Druckaustauscher
GB923368A (en) * 1961-01-30 1963-04-10 Power Jets Res & Dev Ltd Improvements in or relating to pressure exchangers
US4120156A (en) * 1977-06-08 1978-10-17 The Garrett Corporation Turbocharger control
JPS608936Y2 (ja) * 1981-08-11 1985-03-30 三共理化学株式会社 重合研磨翼車輪
DE3461846D1 (en) * 1983-05-02 1987-02-05 Bbc Brown Boveri & Cie Control device for a pressure-wave charger

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080741A1 (de) * 1981-11-30 1983-06-08 BBC Aktiengesellschaft Brown, Boveri & Cie. Gasdynamische Druckwellenmaschine mit Abgasbypass

Also Published As

Publication number Publication date
DE3461499D1 (en) 1987-01-15
EP0130433A1 (de) 1985-01-09
JPH059618B2 (OSRAM) 1993-02-05
ATE23912T1 (de) 1986-12-15
US4592330A (en) 1986-06-03
JPS6013921A (ja) 1985-01-24

Similar Documents

Publication Publication Date Title
EP0075360B1 (de) Verfahren zur Aufladung von Verbrennungsmotoren durch Abgaslader mit variablem Abgasschluckvermögen und nach diesem Verfahren arbeitender Verbrennungsmotor
EP0014778B1 (de) Zweistüfiges Abgasturboladeraggregat
EP1274928A1 (de) Turbolader-einrichtung für eine brennkraftmaschine
DE102006019780A1 (de) Abgasturbolader in einer Brennkraftmaschine
EP3020934A1 (de) Kurbelgehäuseentlüftungseinrichtung
EP2059663A1 (de) Verfahren und vorrichtung zum betreiben einer brennkraftmaschine
DE2926373A1 (de) Auspuff-umgehungsventilanordnung
DE102014223291A1 (de) Flüssigkeitsabscheideeinrichtung
EP1639245A1 (de) Brennkraftmaschine mit einem verdichter im ansaugtrakt und verfahren hierzu
EP3020935A2 (de) Kurbelgehäuseentlüftungseinrichtung
CH666521A5 (de) Druckwellenlader fuer einen verbrennungsmotor mit einer einrichtung zur steuerung des hochdruckabgasstromes.
EP2305991B1 (de) Brennkraftmaschine mit einem Abgasturbolader und einem Abgasrückführsystem
EP0123990B1 (de) Regeleinrichtung eines Druckwellenladers
EP0130433A1 (de) Druckwellenlader mit einem Abgasabblasventil
DE102006054117A1 (de) Im Teil- und Volllastbetrieb gesteuerte Kurbelgehäuse-Belüftung einer Brennkraftmaschine
EP0095789B1 (de) Verfahren und Einrichtung zur Steuerung der Rezirkulation von Abgas in einem Druckwellenlader für einen Verbrennungsmotor
DE102007014319A1 (de) Turbogeladene Brennkraftmaschine mit luftseitiger Verschaltung
DE202005021914U1 (de) Turbinenstromregelventilsystem
CH673684A5 (en) Engine with progressive pressure-charging - has second turbo-charger cut out by air and exhaust stop valves
CH681738A5 (OSRAM)
DE29723421U1 (de) Aufladeeinrichtung eines Verbrennungsmotors
EP0306829B1 (de) Verbrennungsmotor mit Registeraufladung
DE102008051981A1 (de) Turboladeranordnung
DE102011120168A1 (de) Verdichter für einen Abgasturbolader
DE102015208475B4 (de) Einrichtung zum Abführen von Kondensat aus einer Turboladeranordnung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19841119

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI SE

REF Corresponds to:

Ref document number: 23912

Country of ref document: AT

Date of ref document: 19861215

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3461499

Country of ref document: DE

Date of ref document: 19870115

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890630

Ref country code: CH

Effective date: 19890630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900516

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900517

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19900528

Year of fee payment: 7

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910615

Ref country code: AT

Effective date: 19910615

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84106843.0

Effective date: 19900418

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960614

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980303