WO2012013463A1 - Moteur à piston pouvant être entraîné par le biais d'un procédé de force motrice à vapeur - Google Patents

Moteur à piston pouvant être entraîné par le biais d'un procédé de force motrice à vapeur Download PDF

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Publication number
WO2012013463A1
WO2012013463A1 PCT/EP2011/061416 EP2011061416W WO2012013463A1 WO 2012013463 A1 WO2012013463 A1 WO 2012013463A1 EP 2011061416 W EP2011061416 W EP 2011061416W WO 2012013463 A1 WO2012013463 A1 WO 2012013463A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
piston
rod
bore
cylinder piston
Prior art date
Application number
PCT/EP2011/061416
Other languages
German (de)
English (en)
Inventor
Nadja Eisenmenger
Hans-Christoph Magel
Andreas Wengert
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to US13/812,699 priority Critical patent/US20130118174A1/en
Priority to EP11729990.9A priority patent/EP2598719A1/fr
Priority to CN2011800366794A priority patent/CN103026002A/zh
Publication of WO2012013463A1 publication Critical patent/WO2012013463A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F01B9/023—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft of Bourke-type or Scotch yoke

Definitions

  • the invention relates to a drivable via a steam power piston engine. Specifically, the invention relates to a piston engine which can be driven by a steam power process and serves to utilize the waste heat of an internal combustion engine.
  • the piston engine according to the invention with the features of claim 1 has the advantage that an advantageous operation of the piston engine is also possible when using water or other, poorly lubricating working fluids. This affects among other things in a reduced wear on the cylinder piston and in a longer
  • piston engine which can be driven via the steam power process
  • an internal combustion engine in order to convert the waste heat of the internal combustion engine via the steam power process into additional drive energy.
  • Such a combination for waste heat utilization is particularly efficient in a commercial vehicle, since here the internal combustion engine gives off a large power and thus a large amount of heat for steam generation is available. As a result, the fuel consumption can be reduced.
  • Piston machine can be achieved as well as for the internal combustion engine and thus the mechanical energy emitted by the piston engine can be delivered directly to the crankshaft of the diesel engine or gas engine.
  • a piston engine can be conveniently mounted in a limited space on an internal combustion engine.
  • the steam process can be configured as an ORC process (Organic Rankine Cycle Process).
  • ORC process Organic Rankine Cycle Process
  • the thermal energy of the waste heat is converted into mechanical energy via the ORC process.
  • the waste heat from an exhaust gas of the internal combustion engine or an exhaust gas recirculation can advantageously be transmitted via a heat exchanger to the working fluid of the ORC process.
  • the working fluid may in this case be based at least essentially on water.
  • the working fluid can be evaporated. This steam can then be expanded in the piston machine serving as an expansion machine, whereby the mechanical energy is recovered. The working fluid is then in a
  • Cooled condenser and fed to a pump.
  • the working fluid can thereby be compressed in the liquid phase by the pump to the pressure level for re-evaporation at the heat exchanger. As a result, the cycle is closed.
  • an outer diameter of an outer side of the cylinder piston is smaller than an inner diameter of the cylinder bore.
  • Cylinder piston and the cylinder bore (cylinder wall) no force is transmitted.
  • Cylinder piston in this case has a sufficient circumferential gap to the
  • a stable and well-guided bearing for the cylinder piston can be realized.
  • the occurrence of wear is critical because it works with a poorly lubricating working fluid (working fluid).
  • working fluid working fluid
  • the working piston can work with water vapor, which has no lubricity.
  • water vapor which has no lubricity.
  • at least one sealing element is arranged on the outside of the cylinder piston.
  • Recess is configured that the sealing element is designed as an annular sealing element and that the annular sealing element is inserted into the circumferential recess on the outside of the cylinder piston. Specifically, the circumferential
  • Recess may be formed on the outside of the cylinder piston by a circumferential annular groove.
  • the tightness on the cylinder piston can be increased in an advantageous manner in order to prevent or at least reduce an undesired escape of the gaseous working fluid, in particular of the water vapor, via the gap between the cylinder piston and the cylinder bore.
  • additional sealing elements in the form of piston rings or the like can be used.
  • Cylinder piston is connected, that the bearing point is formed by a bearing bore in which the rod is guided and that the cylinder piston is aligned by the leadership of the rod in the bearing bore at least approximately centered on a longitudinal axis of the cylinder bore.
  • the bearing bore may for example be designed on a housing part which is arranged between the cylinder bore and a crankshaft space.
  • a lubricating oil may be provided in the crankshaft space to lubricate a crankshaft and other components disposed in the crankshaft space.
  • Bearing point is guided in the crankshaft space that in the crankshaft space the Crankshaft is arranged and that the rod cooperates by means of a crank loop with the crankshaft.
  • At least one further cylinder bore, a further cylinder piston arranged in the further cylinder bore, which delimits a further working space in the further cylinder bore, a further rod which is at least indirectly connected to the further cylinder piston and at least one further bearing point are provided wherein the further rod is mounted on the further bearing point and wherein between the further cylinder piston and the further cylinder bore, a circumferential gap is predetermined.
  • the further rod is substantially rigidly connected to the other cylinder piston, that the further bearing point is formed by a further bearing bore, in which the further rod is guided, and that the further cylinder piston by the leadership of the further rod in the further bearing bore is aligned at least approximately centered on a longitudinal axis of the further cylinder bore.
  • the further rod is in this case preferably connected to a crank arranged in the piston chamber.
  • Crank grinding drive can be realized.
  • the two bearing points such as the entire remaining crank drive
  • In the oil sector can be realized by a stable and well-managed storage. This may optionally be provided an additional media separation, which connects directly to the bearings. Thereby, an improved separation of the oil from the working fluid can be achieved.
  • a particularly low-wear piston machine with lubricated oil crank loop and without direct contact between the cylinder piston and the cylinder wall of the cylinder bore can be realized.
  • the storage of the working piston on each of a transmission rod without respective contact with the cylinder bore can be used in an advantageous manner in designed as a reciprocating steam engines piston engines.
  • this embodiment is particularly advantageous in a designed as a reciprocating steam engine piston engine with crank grinding (Scotch Yoke).
  • Cylinder piston specified smaller than an inner diameter of the other
  • Cylinder piston at least one sealing element is arranged. This can be a
  • FIG. 1 shows a piston machine in a schematic sectional illustration according to an exemplary embodiment of the invention.
  • FIG. 1 shows a piston engine 1 in a schematic illustration according to an exemplary embodiment of the invention.
  • the piston engine 1 is connected via a
  • the piston engine 1 can be used, for example, in an internal combustion engine of a motor vehicle to use the waste heat of the internal combustion engine.
  • the piston engine 1 then converts the waste heat into mechanical energy, which can serve, for example, as additional drive energy or for driving an auxiliary aggregate, in particular an electric generator.
  • the piston engine 1 according to the invention is also suitable for others
  • the piston engine 1 of the exemplary embodiment has a housing part 2 and cylinders 3, 4 connected to the housing part 2. On the cylinder 3, a cylinder bore 5 is formed, in which a cylinder piston 6 is arranged.
  • Cylinder bore 5 has a longitudinal axis 7, along which the cylinder piston 6 is displaceable.
  • the cylinder piston 6 bounded in the cylinder bore 5 on the one hand a working space 8 and on the other hand a pressure-relieved space 9.
  • a valve-controlled inlet 10 and a valve-controlled outlet 1 1 are provided for the working space 8.
  • gaseous working fluid in particular water vapor, can be guided into the working space 8.
  • Cylinder piston 6 in a direction 12 along the longitudinal axis 7 leads.
  • the volume of the working space 8 increases while the volume of the pressure-relieved space 9 decreases.
  • the pressure-relieved space 9 is connected via an outlet 13 with a
  • crankshaft space 15 is provided within the housing part 2.
  • Crankshaft 15 is a crankshaft 16 with a crankshaft journal 17 is arranged.
  • An axis of rotation of the crankshaft 16 is in this case oriented perpendicular to the longitudinal axis 7.
  • a crank loop 18 is arranged in the crankshaft space 15.
  • Crank loop 18 has a slot-shaped recess 19 into which a sliding block 20 is inserted.
  • the sliding block 20 is in this case on the crankshaft journal 17th
  • the cylinder piston 6 is connected via a rod 21 with the crank loop 18. As a result, an operative connection between the cylinder piston 6 and the crankshaft 16 is formed, so that the lifting movement of the cylinder piston 6 in a
  • the cylinder 4 of the piston engine 1 a further cylinder bore 5 ', in which a further cylinder piston 6' is arranged.
  • the further cylinder piston 6 ' is guided along the longitudinal axis 7 of the cylinder bore 5'.
  • the longitudinal axis 7 serves as a common longitudinal axis 7 for the two cylinder bores 5, 5 'of the cylinder 3, 4th
  • Working space 8 ' Provided. Further, an outlet 13 'for the pressure-relieved space 9' is provided to return from the working space 8 'in the pressure-relieved space 9' reaching working fluid in the steam circuit.
  • gaseous working fluid can also be passed through the working space 8 '.
  • the cylinder piston 6' is actuated counter to the direction 12.
  • the lifting movement of the cylinder piston 6 ' is in this case transmitted via a further rod 21' on the crank loop 18.
  • the further rod 21 ' in this case connects the cylinder piston 6' with the crank loop 18th
  • crank loop 18 is connected on the one hand via the rod 21 with the cylinder piston 6 and on the other hand via the rod 21 'with the cylinder piston 6'.
  • an alternating actuation of the crank loop 18 in and against the direction 12 is possible.
  • a Scotch-Yoke drive can be realized in an advantageous manner.
  • the cylinder piston 6 has an outer side 25. On the outer side 25, the cylinder piston 6 has an outer diameter 26. In addition, an inner diameter 27 of the cylinder bore 5 is predetermined. The outer diameter 26 of the cylinder piston 6 and the inner diameter 27 of the cylinder bore 5 are coordinated. Here, the outer diameter 26 of the outer side 25 of the cylinder piston 6 is smaller than the inner diameter 27 of the cylinder bore 5. As a result, a gap 28 between the outer side 25 of the cylinder piston 6 and the cylinder bore 5 is predetermined. Of the predetermined gap 28 ensures a certain distance of the cylinder piston 6 of the cylinder bore 5 during operation. A contact between the cylinder piston 6 and the cylinder bore 5 is in this case avoided over the entire stroke range of the cylinder piston 6.
  • Cylinder piston 6 in the cylinder bore 5 to avoid Reibverschl foundedes can not be guaranteed.
  • the predetermined gap 28 By the predetermined gap 28, however, frictional wear is prevented.
  • vaporous working fluid can pass from the working space 8 into the pressure-relieved space 9 via the gap 28.
  • this working fluid is returned via the outlet 13 in the steam circuit.
  • the cylinder piston 6 in this embodiment annular recesses 29, 30 on.
  • the circumferential recesses 29, 30 are configured here as annular grooves.
  • annular sealing elements 31, 32 are used in the annular grooves 29, 30.
  • the annular sealing elements 31, 32 form a seal between the working space 8 and the pressure-relieved space 9 with respect to the predetermined gap 28.
  • a housing part 35 is provided, which is connected to the cylinder 3.
  • the housing part 35 is arranged between the cylinder bore 5 of the cylinder 3 and the crankshaft space 15.
  • On the housing part 35 is a bearing bore
  • Cylinder bore 5 prevents.
  • the cylinder piston 6 is in this case additionally guided by the sealing elements 31, 32 in the cylinder bore 5.
  • a guide through the sealing elements 31, 32 is not required.
  • Inner diameter 27 'on In this embodiment, the outer diameter 26, 26 'of the cylinder piston 6, 6' given the same size. In addition, also the
  • Cylinder bore 5 'and the crankshaft space 15 is arranged.
  • a bearing bore 36' is configured, in which the rod 21 'is mounted.
  • the bearing bore 36 'thus forms a bearing 37' for the rod 21 '.
  • the two rods 21, 21 ' are rigidly connected to the crank loop 18. This is a two-sided storage of the crank loop 18 to the
  • the cylinder piston 6, 6 'serving cylinder piston 6, 6' of the designed as a reciprocating steam engine piston engine 1 is possible.
  • the cylinder piston 6, 6 'with respect to the crankshaft 16 are arranged opposite to each other.
  • the cylinder pistons 6, 6 'in this case transmit their power via the crank-wheel drive to the crankshaft 16.
  • the inlet 10 and the outlet 1 1 for the cylinder 3 and the inlet 10 'and the outlet 1 1' for the cylinder 4 are preferably valve-controlled.
  • the bearing is in this case designed so that the cylinder pistons 6, 6 'are not present at their respective cylinder liners, which are predetermined in the cylinder bores 5, 5', and there transmit no forces. This avoids critical wear on these non-oil lubricated areas.
  • the piston engine 1 can thereby the necessary
  • the bearing bores 36, 36 ' are oil lubricated.
  • one or more sealing elements 38, 39, 38', 39 ' can connect to the bearing points 37, 37'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne un moteur à piston (1) pouvant être entraîné par le biais d'un processus de force motrice à vapeur et servant notamment à récupérer la chaleur perdue d'un moteur à combustion interne. Ledit moteur à piston comprend un alésage de cylindre (5), un piston de cylindre (6) monté dans l'alésage de cylindre (5) et délimitant un espace de travail (8) dans l'alésage de cylindre (5), une tige (21) reliée au piston de cylindre (6) et un point de support (37) sur lequel sont montés la tige (21) et le piston de cylindre (6) relié à la tige (21). A cet effet, une fente (28) périphérique est ménagée entre le piston de cylindre (6) et l'alésage de cylindre (5), ce qui permet d'éviter l'émergence de phénomènes d'usure par abrasion entre le piston de cylindre (6) et l'alésage de cylindre (5) et qui est particulièrement avantageux pour un fluide de travail à base d'eau, qui est guidé à travers l'espace de travail (8), la vapeur d'eau ne présentant pas de pouvoir lubrifiant.
PCT/EP2011/061416 2010-07-28 2011-07-06 Moteur à piston pouvant être entraîné par le biais d'un procédé de force motrice à vapeur WO2012013463A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/812,699 US20130118174A1 (en) 2010-07-28 2011-07-06 Piston engine drivable using a steam power process
EP11729990.9A EP2598719A1 (fr) 2010-07-28 2011-07-06 Moteur à piston pouvant être entraîné par le biais d'un procédé de force motrice à vapeur
CN2011800366794A CN103026002A (zh) 2010-07-28 2011-07-06 可通过蒸汽力过程驱动的活塞机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010038543.3 2010-07-28
DE102010038543A DE102010038543A1 (de) 2010-07-28 2010-07-28 Über einen Dampfkraftprozess antreibbare Kolbenmaschine

Publications (1)

Publication Number Publication Date
WO2012013463A1 true WO2012013463A1 (fr) 2012-02-02

Family

ID=44278588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/061416 WO2012013463A1 (fr) 2010-07-28 2011-07-06 Moteur à piston pouvant être entraîné par le biais d'un procédé de force motrice à vapeur

Country Status (5)

Country Link
US (1) US20130118174A1 (fr)
EP (1) EP2598719A1 (fr)
CN (1) CN103026002A (fr)
DE (1) DE102010038543A1 (fr)
WO (1) WO2012013463A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014128266A1 (fr) 2013-02-21 2014-08-28 Exoes Système de conversion d'énergie thermique des gaz d'échappement d'un moteur à combustion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017123119A1 (de) 2017-10-05 2019-04-11 Ficht Fahrzeug + Marinetechnik Gmbh & Co. Kg Hubkolben-Expansionsmaschine, insbesondere Dampfmotor und Arbeitszylinder hierfür

Citations (4)

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Publication number Priority date Publication date Assignee Title
GB218308A (en) * 1923-06-26 1924-10-02 Gottfried Hillekum Improvements in internal-combustion engines
DE920758C (de) * 1951-12-21 1954-11-29 Heinz Boerner Zweitaktbrennkraftmaschine
US4889039A (en) * 1988-10-17 1989-12-26 Miller Bernard F Gas compressor with labyrinth sealing and active magnetic bearings
US20020029571A1 (en) * 1999-07-19 2002-03-14 Gray Charles L. High efficiency, air bottoming engine

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US4013048A (en) * 1975-12-12 1977-03-22 Reitz Daniel M Bourke type engine
US4036027A (en) * 1976-04-30 1977-07-19 Cryogenic Technology, Inc. Lost-motion refrigeration drive system
CN2667177Y (zh) * 2004-01-15 2004-12-29 闻福义 一种双曲轴对称双连杆带曲轴同步齿轮的活塞机构
CN2731117Y (zh) * 2004-08-25 2005-10-05 董志和 对塞式内燃机
DE102006028868B4 (de) * 2006-06-23 2017-07-13 Man Truck & Bus Ag Aufgeladene Brennkraftmaschine mit einer Expandereinheit in einem Wärmerückgewinnungskreislauf
GB0710852D0 (en) * 2007-06-06 2007-07-18 Cox Powertrain Ltd Internal combustion engines
AT507159B1 (de) * 2008-08-04 2011-03-15 Man Nutzfahrzeuge Oesterreich Hubkolbenexpansionsmaschine sowie kolben einer hubkolbenexpansionsmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB218308A (en) * 1923-06-26 1924-10-02 Gottfried Hillekum Improvements in internal-combustion engines
DE920758C (de) * 1951-12-21 1954-11-29 Heinz Boerner Zweitaktbrennkraftmaschine
US4889039A (en) * 1988-10-17 1989-12-26 Miller Bernard F Gas compressor with labyrinth sealing and active magnetic bearings
US20020029571A1 (en) * 1999-07-19 2002-03-14 Gray Charles L. High efficiency, air bottoming engine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JIM MEAD: "What's in your Firebox....", 9 July 2010 (2010-07-09), XP002658524, Retrieved from the Internet <URL:http://www.smokstak.com/forum/showthread.php?t=80190> [retrieved on 20110902] *
ROBERT H THURSTON: "A History of the Growth of the Steam Engine - Chapter VI - The Steam Engine of Today", 16 December 1996 (1996-12-16), XP002658117, Retrieved from the Internet <URL:http://www.history.rochester.edu/steam/thurston/1878/Chapter6.html> [retrieved on 20110902] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014128266A1 (fr) 2013-02-21 2014-08-28 Exoes Système de conversion d'énergie thermique des gaz d'échappement d'un moteur à combustion

Also Published As

Publication number Publication date
EP2598719A1 (fr) 2013-06-05
CN103026002A (zh) 2013-04-03
US20130118174A1 (en) 2013-05-16
DE102010038543A1 (de) 2012-02-02

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