WO1992002719A1 - Moteurs diesel combines a deux et quatre temps a transmission variable continue - Google Patents

Moteurs diesel combines a deux et quatre temps a transmission variable continue Download PDF

Info

Publication number
WO1992002719A1
WO1992002719A1 PCT/GB1991/001208 GB9101208W WO9202719A1 WO 1992002719 A1 WO1992002719 A1 WO 1992002719A1 GB 9101208 W GB9101208 W GB 9101208W WO 9202719 A1 WO9202719 A1 WO 9202719A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
cvt
unit
turbocharger
output shaft
Prior art date
Application number
PCT/GB1991/001208
Other languages
English (en)
Inventor
Frank Julius Wallace
Original Assignee
F.J. Wallace & Associates Ltd.
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 F.J. Wallace & Associates Ltd. filed Critical F.J. Wallace & Associates Ltd.
Priority to JP91512366A priority Critical patent/JPH05508695A/ja
Publication of WO1992002719A1 publication Critical patent/WO1992002719A1/fr

Links

Classifications

    • 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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/10—Engines with prolonged expansion in exhaust turbines
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/004—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This invention relates to compound power units of the type wherein a turbocharged internal combustion engine has its turbocharger or lowest pressure turbocharger coupled to the output shaft of the engine via a continuously variable transmission (CVT) to supply excess power from the turbocharger to the output shaft.
  • CVT continuously variable transmission
  • the invention consists in a compound power unit including a reciprocating internal combustion engine, having an output shaft, and at least one turbocharger connected to the engine output shaft through a continuously variable transmission means and means for controlling the continuously variable transmission means to transfer power between the turbocharger and the engine output shaft, in either sense, in dependence on the operating conditions of the unit.
  • the control means may be responsive to the engine boost pressure, the engine speed or the output shaft speed or any combination of these.
  • the control means may also control a variable valve timing mechanism in order to prevent excessive cylinder pressure.
  • the use of the CVT connecting the LP turbocharger to the engine output shaft enables the unit to maintain a high rotational speed, thus ensuring that boost pressure is maintained at a high level over the full engine speed range, and enabling the unit to deliver a high and continuously increasing torque as engine speed is reduced.
  • the CVT performs the twofold function of either transmitting excess power from the LP turbocharger to the engine output shaft, or alternatively when there is a power deficit in the LP turbocharger, to transmit power in the reverse direction.
  • the scheme offers much greater operational flexibility than either turbocharged or conventional compound schemes with a separate power turbine as a result of the higher and continuously increasing torque level with reducing engine speed. This will result in simplification of the transmission system with fewer gear ratios being required.
  • the invention consists in a compound power unit, an internal combustion engine and at least one turbocharger connected to the engine output shaft through a continously variable transmission (CVT) , so that power can be transferred between the engine and the turbocharger in either sense.
  • CVT continously variable transmission
  • Figure 2 is a torque-speed curve illustrating the performance of such a power plant.
  • FIG 3 is a notional control schedule for the LP turbocharger CVT.
  • a power plant is generally indicated at 10 in Figure 1 and comprises a reciprocating engine 11, which may be two stroke or four stroke, having an output shaft 12; a gearbox 12a; a turbocharging unit generally indicated at 13; a continuously variable transmission 14 coupled between the turbocharging unit 13 and the shaft 12; and a control unit 15.
  • the turbocharging unit 13 receives exhaust from the engine 11 via pipe 16 and this drives a high pressure turbine 17 and then a series connected low pressure turbine 18.
  • Each turbine has an associated compressor 19,20 which it drives via a respective shaft 21,22 such that air is drawn through an inlet 23, into the low pressure compressor 19, and then passed through an intercooler 24 to the high pressure compressor 20. This in turn feeds the pressurised air through an after cooler 25 into the engine 11.
  • the pressure of the air entering the engine is monitored by a pressure transducer 26.
  • the intercooler 24 and after cooler 25 are provided to give greater thermodynamic efficiency and reduced thermal loading.
  • a speed transducer 27 is provided to monitor the speed of the output shaft 12 and the output of both this transducer and the pressure transducer 26 are fed to the control unit 15.
  • the control unit 15 controls the CVT 14 to transfer power between the low pressure turbine 18 and the output shaft 12 in either sense in ⁇ ependence on the operational conditions indicated by the transducers 26,27 and in accordance, for example, with a control schedule -uch as described below in connection with Figure 3.
  • curve A is typical of a 2 stage turbocharged engine giving approximately 25% torque back-up at 60% rated speed.
  • TUTESHEET similar fraction of rated speed.
  • the compound engine with CVT drive to the low pressure turbocharger and which is the subject of this Application has a greatly improved torque curve, C, with approximately 50% torque back-up achieved at minimum governed engine speed rather than at some intermediate speed level between minimum and rated speed.
  • Figure 3 shows a notional control schedule for the CVT and valve mechanism, the former showing the progressive decease in CVT speed ratio defined as output speed to engine crankshaft sprocket input speed from turbocharger sprocket with reduction in engine speed, and also as a function of load.
  • the control schedule for the valve mechanism in this case for a four stroke engine, shows the progressive advance in inlet valve closing as a function of reducing engine speed only.
  • variable valve timing mechanism 29 may be provided under the control of the control unit 15. This variable inlet closing prevents the build up of excessive cylinder pressure at high boost pressures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

Cette invention se rapporte à des moteurs combinés. Un groupe ou équipement générateur (10) comprend un moteur alternatif (11) comportant un arbre de sortie (12); un ensemble turbocompresseur généralement indiqué par (13); une transmission variable continue (CVT) (14) accouplée entre la turbine à basse pression (18) de l'ensemble (13) et l'arbre (12); un ensemble de commande (15) servant à commander la transmission de puissance du CVT (14) entre la turbine (18) et l'arbre (12) en fonction des conditions de fonctionnement de l'équipement (10).
PCT/GB1991/001208 1990-07-27 1991-07-18 Moteurs diesel combines a deux et quatre temps a transmission variable continue WO1992002719A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP91512366A JPH05508695A (ja) 1990-07-27 1991-07-18 Ｃｖｔ駆動機構を備えた２および４サイクル複合ディーゼル機関

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9016480.7 1990-07-27
GB909016480A GB9016480D0 (en) 1990-07-27 1990-07-27 Two and four stroke compound diesel engine with cvt drive

Publications (1)

Publication Number Publication Date
WO1992002719A1 true WO1992002719A1 (fr) 1992-02-20

Family

ID=10679734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001208 WO1992002719A1 (fr) 1990-07-27 1991-07-18 Moteurs diesel combines a deux et quatre temps a transmission variable continue

Country Status (4)

Country Link
EP (1) EP0541613A1 (fr)
JP (1) JPH05508695A (fr)
GB (1) GB9016480D0 (fr)
WO (1) WO1992002719A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806315A (en) * 1992-11-16 1998-09-15 Mui; Richard Chin Pang Internal combustion engine
WO2007107301A1 (fr) * 2006-03-20 2007-09-27 Daimler Ag Machine a combustion interne et procede d'utilisation d'une machine a combustion interne
WO2008075127A1 (fr) * 2006-12-19 2008-06-26 Renault Trucks Groupe moto-propulseur pour véhicule automobile et véhicule comprenant un tel groupe moto-propulseur
EP2042705A1 (fr) * 2007-09-28 2009-04-01 Iveco Motorenforschung AG Moteur suralimenté du type turbo-compound
EP2341225A1 (fr) * 2009-12-23 2011-07-06 Iveco Motorenforschung AG Procédé de contrôle d'un moteur suralimenté du type turbo-compound
WO2012163956A1 (fr) * 2011-05-30 2012-12-06 Fpt Motorenforschung Ag Appareil à moteur suralimenté du type turbo-compound
DE102013000495B3 (de) * 2013-01-15 2014-03-13 Voith Patent Gmbh Antriebsstrang, insbesondere für ein Kraftfahrzeug
US9932884B2 (en) 2011-04-21 2018-04-03 Volvo Lastvagnar Ab Power system with turbine bypass and method of operating a power system
US10941712B2 (en) 2015-06-30 2021-03-09 Innio Jenbacher Gmbh & Co Og Internal combustion engine with a regulating device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257797A (en) * 1963-11-14 1966-06-28 Nordberg Manufacturing Co Tandem supercharging system
GB2080432A (en) * 1980-07-22 1982-02-03 South Western Ind Res Differential compound engine
WO1988001343A1 (fr) * 1986-08-21 1988-02-25 Wang Lin Shu Moteurs a combustion interne et procedes de fonctionnement
DE3807372A1 (de) * 1988-03-07 1989-09-21 Asea Brown Boveri Verbrennungsmotor mit zweistufigem abgasturbolader und nutzturbine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257797A (en) * 1963-11-14 1966-06-28 Nordberg Manufacturing Co Tandem supercharging system
GB2080432A (en) * 1980-07-22 1982-02-03 South Western Ind Res Differential compound engine
WO1988001343A1 (fr) * 1986-08-21 1988-02-25 Wang Lin Shu Moteurs a combustion interne et procedes de fonctionnement
DE3807372A1 (de) * 1988-03-07 1989-09-21 Asea Brown Boveri Verbrennungsmotor mit zweistufigem abgasturbolader und nutzturbine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806315A (en) * 1992-11-16 1998-09-15 Mui; Richard Chin Pang Internal combustion engine
WO2007107301A1 (fr) * 2006-03-20 2007-09-27 Daimler Ag Machine a combustion interne et procede d'utilisation d'une machine a combustion interne
WO2008075127A1 (fr) * 2006-12-19 2008-06-26 Renault Trucks Groupe moto-propulseur pour véhicule automobile et véhicule comprenant un tel groupe moto-propulseur
US8261550B2 (en) 2006-12-19 2012-09-11 Renault Trucks Power unit for an automotive vehicle and vehicle including such a power unit
EP2042705A1 (fr) * 2007-09-28 2009-04-01 Iveco Motorenforschung AG Moteur suralimenté du type turbo-compound
EP2341225A1 (fr) * 2009-12-23 2011-07-06 Iveco Motorenforschung AG Procédé de contrôle d'un moteur suralimenté du type turbo-compound
US9932884B2 (en) 2011-04-21 2018-04-03 Volvo Lastvagnar Ab Power system with turbine bypass and method of operating a power system
WO2012163956A1 (fr) * 2011-05-30 2012-12-06 Fpt Motorenforschung Ag Appareil à moteur suralimenté du type turbo-compound
US9140216B2 (en) 2011-05-30 2015-09-22 Fpt Motorenforschung Ag Supercharged turbocompound hybrid engine apparatus
AU2012264789B2 (en) * 2011-05-30 2017-03-30 Fpt Motorenforschung Ag Supercharged turbocompound engine apparatus
CN103582747A (zh) * 2011-05-30 2014-02-12 Fpt发动机研究公司 增压涡轮复合发动机装置
DE102013000495B3 (de) * 2013-01-15 2014-03-13 Voith Patent Gmbh Antriebsstrang, insbesondere für ein Kraftfahrzeug
US10941712B2 (en) 2015-06-30 2021-03-09 Innio Jenbacher Gmbh & Co Og Internal combustion engine with a regulating device

Also Published As

Publication number Publication date
JPH05508695A (ja) 1993-12-02
GB9016480D0 (en) 1990-09-12
EP0541613A1 (fr) 1993-05-19

Similar Documents

Publication Publication Date Title
US2585968A (en) Turbosupercharged internal-combustion engine having hydraulic means to connect turbine to engine output shaft at high load
US7398650B2 (en) Internal combustion engine comprising a mechanical charger and a turbo-compound
US6050094A (en) Supercharged internal combustion engine
JPS6212373B2 (fr)
KR940001921B1 (ko) 과급형 박용 디젤기관
EP2042705B1 (fr) Moteur suralimenté du type turbo-compound
JPH10238354A (ja) ハイブリッド過給エンジン
JPS62205896A (ja) 舶用過給式デイ−ゼル機関
US6966183B2 (en) Supercharged internal combustion engine
US20020096156A1 (en) Multi-speed gear arrangement for a centrifugal engine charger
US4638637A (en) Vehicle propulsion plant
WO1992002719A1 (fr) Moteurs diesel combines a deux et quatre temps a transmission variable continue
EP2341225A1 (fr) Procédé de contrôle d'un moteur suralimenté du type turbo-compound
US4566279A (en) Vehicle propulsion plant
JPS6349053B2 (fr)
GB2143580A (en) Supercharging arrangement for multi-cylinder internal combustion engine
US4120155A (en) Propulsion arrangement
JP2534338B2 (ja) タ―ボコンパウンドエンジン
SU1686202A1 (ru) Двигатель внутреннего сгорани
WO1980000169A1 (fr) Moteur a combustion du type compound pour un vehicule
JPH0517382B2 (fr)
US20200200074A1 (en) Multiple stage turbo-charged engine system
US11480098B1 (en) Continuously variable transmission (CVT) driven supercharger through transmission output
GB2125892A (en) Turbo-supercharging and resonance charging an I.C. engine
JPH04287833A (ja) 過給内燃機関

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): GB JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1991913588

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1991913588

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1991913588

Country of ref document: EP