WO2007087963A1 - Moteur a combustion interne - Google Patents

Moteur a combustion interne Download PDF

Info

Publication number
WO2007087963A1
WO2007087963A1 PCT/EP2007/000143 EP2007000143W WO2007087963A1 WO 2007087963 A1 WO2007087963 A1 WO 2007087963A1 EP 2007000143 W EP2007000143 W EP 2007000143W WO 2007087963 A1 WO2007087963 A1 WO 2007087963A1
Authority
WO
WIPO (PCT)
Prior art keywords
internal combustion
combustion engine
engine according
exhaust gas
accumulator
Prior art date
Application number
PCT/EP2007/000143
Other languages
German (de)
English (en)
Inventor
Alfred Feuser
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
Publication of WO2007087963A1 publication Critical patent/WO2007087963A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines

Definitions

  • the invention relates to an internal combustion engine, in particular for a motor vehicle or a mobile working device according to the preamble of patent claim 1.
  • the heat energy contained in the hot exhaust gases of an internal combustion engine such as a diesel or gasoline engine is supplied to a Stirling engine (hot air engine) and converted via this into usable mechanical rotational energy, which can be used, for example, to drive a hydraulic pump of a hydraulic system.
  • a Stirling engine hot air engine
  • usable mechanical rotational energy which can be used, for example, to drive a hydraulic pump of a hydraulic system.
  • an internal combustion engine with an exhaust gas conducting exhaust system and a Stirling engine as an auxiliary unit is known in which the amount of heat contained in the exhaust gas of the engine supplied to the Stirling engine via a heat pipe and converted into mechanical useful energy, for example, to drive a hydraulic pump becomes.
  • a disadvantage of such internal combustion engines is that the hydraulic power of the driven by the Stirling engine hydraulic pump due to the design-limited performance of the Stirling engine is not sufficient to the hydraulic system, such as an agricultural Commercial vehicle or mobile implement, to provide adequate.
  • the present invention seeks to provide an internal combustion engine, which allows an improved hydraulic supply of a hydraulic system with minimal device complexity.
  • the internal combustion engine according to the invention has a drive train and an exhaust gas exhaust system, wherein the amount of heat contained in the exhaust gas is supplied to a Stirling engine for driving a first hydraulic pump.
  • at least one further hydraulic pump is provided, which is in operative connection with the drive train of the internal combustion engine. That is, in this solution, the supply of the hydraulic system takes place in contrast to the prior art according to DE 197 32 307 Al additionally via at least one directly via the internal combustion engine driven hydraulic pump.
  • the driven via the internal combustion engine hydraulic pump ensures a sufficient pressure medium supply of the hydraulic system even at high power requirements.
  • the hydraulic pumps are provided for charging at least one pressure fluid accumulator of a central hydraulic system of a vehicle or a working device.
  • the use of accumulators reduces the pump performance to the average power requirement of the consumer be because the volume flow pumped by the pump loads the memory when the volume flow required for the consumer is temporarily smaller than the pump volume flow.
  • One of the accumulator is preferably designed as a high-pressure accumulator and another accumulator as a low-pressure accumulator.
  • the suction sides of the hydraulic pumps are connected to the low pressure accumulator and the pressure sides to the high pressure accumulator.
  • the pressure medium lines of the high-pressure accumulator is preferably arranged in each case one blocking in the direction of the hydraulic pump check valve.
  • the non-return valves are used to shut off working groups under pressure and prevent pressure loss of the accumulator via the pumps.
  • the pressure fluid storage are designed as a membrane or bladder accumulator, so that they have a comparatively simple structure and low space requirement.
  • the Stirling engine is connected in an embodiment of the invention via a drive shaft with the first hydraulic pump.
  • the hydraulic pump can be arranged spatially spaced from the Stirling engine.
  • the second hydraulic pump is driven by an external gear arrangement of the drive train.
  • the amount of heat contained in the exhaust gas is supplied in a preferred embodiment, a heater of the Stirling engine.
  • the heater of the Stirling engine is arranged in the exhaust gas flow of the internal combustion engine, so that a direct heat transfer from the exhaust gas flow to the heater takes place and a high efficiency of the Stirling engine is ensured.
  • the heater is arranged on an exhaust pipe of the exhaust system such that the heater surrounds the exhaust pipe at least in sections annularly.
  • the excess air in the exhaust gas is utilized for afterburning in order to improve the efficiency of the Stirling engine in partial load operation and with decreasing exhaust gas temperature.
  • at least one burner in the exhaust system is provided in front of the heater of the Stirling engine, is added to the fuel in accordance with the respective residual air content and burned, so that the Stirling engine is operated in the optimal temperature range for the efficiency.
  • FIGURE shows a schematic representation of a circuit diagram of an internal combustion engine according to the invention.
  • the figure shows a schematic representation of an internal combustion engine 1 according to the invention, as used for example in a motor vehicle or a mobile implement (not shown).
  • the internal combustion engine 1 has a drive train 2 and an exhaust gas 4 conducting exhaust system 6, wherein the amount of heat contained in the exhaust gas stream is fed to a Stirling engine 8 for driving a first hydraulic pump 10 of a hydraulic system 12.
  • the Stirling engine 8 is connected via a drive shaft 14 to the hydraulic pump 10 so that it is spatially spaced from the Stirling engine 8.
  • the amount of heat contained in the exhaust gas 4 is at least partially supplied to the Stirling engine 8 via a heater, not shown, so that sets a temperature gradient .DELTA.T in the exhaust gas flow via the Stirling engine 8.
  • the heater is arranged on an exhaust pipe 16 of the exhaust system 6, that it surrounds this at least partially approximately annular. Thereby, a large heat transfer area between the exhaust pipe 16 and heater is achieved without affecting the exhaust gas flow in the exhaust pipe 16.
  • the heater is arranged in the exhaust stream of the internal combustion engine 1, so that a direct heat transfer from the exhaust gas 4 to the heater takes place and an improved efficiency of the Stirling engine 8 is achieved.
  • a second hydraulic pump 18 is provided, which is connected to the drive train 2 of the internal combustion engine 1 in FIG Active connection is to ensure a sufficient pressure medium supply of the hydraulic system 12 even at high. This additional hydraulic pump 18 is driven by the drive train 2 of the internal combustion engine 1 via an external gear arrangement 20.
  • the hydraulic pumps 10, 18 are used to charge a high-pressure accumulator 22 of a central hydraulic system of the vehicle or mobile implement.
  • the pressure sides of the pumps 10, 18 via a respective pressure medium line 24, 26 connected to the high-pressure accumulator 22.
  • the working lines for supplying the consumers and the return lines of the hydraulic system 12 are not shown.
  • In the pressure medium lines 24, 26 are provided in the direction of the hydraulic pumps 10, 18 blocking check valves 28, 30, which prevent discharge of the high-pressure accumulator 22 via the pumps 10, 18.
  • the suction side of the internal combustion engine 1 associated hydraulic pump 18 is connected via a supply line 32 to a low pressure accumulator 34.
  • a supply line 36 branches off to the suction side of the hydraulic pump 10 connected to the Stirling engine 8 via the drive shaft 14.
  • the two formed as a membrane or bladder accumulator accumulator 22, 34 have a comparatively simple structure with low space requirement.
  • the internal combustion engine 1 is not limited to the described hydraulic system 12 with two hydraulic pumps 10, 18, but can be assigned to the drive train 2 more than one hydraulic pump be, as well as several Stirling engines 8 for driving each of a pump in operative connection with the exhaust system 6 are.
  • an internal combustion engine 1 in particular for a motor vehicle or a mobile working device, with a drive train 2 and an exhaust gas 4 conductive exhaust system 6, 'wherein the amount of heat contained in the exhaust gas 4 is fed to a Stirling engine 8 for driving a first hydraulic pump 10.
  • at least one further hydraulic pump 18 is provided, which is driven by the drive train 2 of the internal combustion engine 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne un moteur à combustion interne (1), en particulier pour véhicule automobile ou engin mobile de chantier, qui présente une chaîne cinématique (2) et une installation (10) de gaz d'échappement qui conduit les gaz d'échappement (4). La chaleur contenue dans les gaz d'échappement est apportée à un moteur Stirling (8) qui entraîne une première pompe hydraulique (10). Selon l'invention, on prévoit au moins une deuxième pompe hydraulique (18) entraînée par la chaîne cinématique du moteur à combustion interne.
PCT/EP2007/000143 2006-01-31 2007-01-10 Moteur a combustion interne WO2007087963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006004422.3 2006-01-31
DE200610004422 DE102006004422A1 (de) 2006-01-31 2006-01-31 Brennkraftmaschine

Publications (1)

Publication Number Publication Date
WO2007087963A1 true WO2007087963A1 (fr) 2007-08-09

Family

ID=38268219

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/000143 WO2007087963A1 (fr) 2006-01-31 2007-01-10 Moteur a combustion interne

Country Status (2)

Country Link
DE (1) DE102006004422A1 (fr)
WO (1) WO2007087963A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109311385A (zh) * 2016-06-15 2019-02-05 沃尔沃卡车集团 气箱装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015693A1 (de) 2009-03-31 2010-10-07 Walter Hamberger Fahrzeug mit einer Verbrennungskraftmaschine und einer deren Abwärme nutzenden Wärmekraftmaschine als Antriebe
DE102009054613A1 (de) * 2009-12-14 2011-06-16 Robert Bosch Gmbh Hybridantrieb für ein Kraftfahrzeug
CN103122806B (zh) * 2012-12-18 2014-10-15 成都宇能通能源开发有限公司 一种基于斯特林发动机的高温尾气废热液压能回收系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083188A (en) * 1977-02-10 1978-04-11 The Garrett Corporation Engine turbocharger system
US4312183A (en) * 1978-09-16 1982-01-26 Man Maschinenfabrik Augsburg-Nurnberg Ag Exhaust gas turbocharger for diesel engines
US4644752A (en) * 1981-11-05 1987-02-24 Nam Chul W Engine system for ships
US4729225A (en) * 1985-09-14 1988-03-08 M.A.N. - B&W Diesel Gmbh Turbo-charged internal combustion engine with exhaust gas energy recuperation
EP0554544A1 (fr) * 1992-02-07 1993-08-11 Man Nutzfahrzeuge Ag Véhicules avec machine à combustion interne suralimentable à l'aide d'une turbosoufflante à gaz d'échappement et commande hydrostatique-mécanique des agrégats auxiliaires
US5713204A (en) * 1992-04-25 1998-02-03 814405 Ontario Limited Turbo compounder
DE19732307A1 (de) * 1996-08-22 1998-02-26 Volkswagen Ag Brennkraftmaschine mit einem Stirlingmotor als Hilfsaggregat
US20020124566A1 (en) * 2001-01-16 2002-09-12 Kapich Davorin D. Exhaust power recovery system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083188A (en) * 1977-02-10 1978-04-11 The Garrett Corporation Engine turbocharger system
US4312183A (en) * 1978-09-16 1982-01-26 Man Maschinenfabrik Augsburg-Nurnberg Ag Exhaust gas turbocharger for diesel engines
US4644752A (en) * 1981-11-05 1987-02-24 Nam Chul W Engine system for ships
US4729225A (en) * 1985-09-14 1988-03-08 M.A.N. - B&W Diesel Gmbh Turbo-charged internal combustion engine with exhaust gas energy recuperation
EP0554544A1 (fr) * 1992-02-07 1993-08-11 Man Nutzfahrzeuge Ag Véhicules avec machine à combustion interne suralimentable à l'aide d'une turbosoufflante à gaz d'échappement et commande hydrostatique-mécanique des agrégats auxiliaires
US5713204A (en) * 1992-04-25 1998-02-03 814405 Ontario Limited Turbo compounder
DE19732307A1 (de) * 1996-08-22 1998-02-26 Volkswagen Ag Brennkraftmaschine mit einem Stirlingmotor als Hilfsaggregat
US20020124566A1 (en) * 2001-01-16 2002-09-12 Kapich Davorin D. Exhaust power recovery system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109311385A (zh) * 2016-06-15 2019-02-05 沃尔沃卡车集团 气箱装置
CN109311385B (zh) * 2016-06-15 2022-04-08 沃尔沃卡车集团 气箱装置
US11850936B2 (en) 2016-06-15 2023-12-26 Volvo Truck Corporation Gas tank arrangement

Also Published As

Publication number Publication date
DE102006004422A1 (de) 2007-08-02

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