GB2121474A - Two-stage I.C. engine turbocharging - Google Patents

Two-stage I.C. engine turbocharging Download PDF

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Publication number
GB2121474A
GB2121474A GB08308287A GB8308287A GB2121474A GB 2121474 A GB2121474 A GB 2121474A GB 08308287 A GB08308287 A GB 08308287A GB 8308287 A GB8308287 A GB 8308287A GB 2121474 A GB2121474 A GB 2121474A
Authority
GB
United Kingdom
Prior art keywords
compressor
turbine
engine
output side
input side
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.)
Granted
Application number
GB08308287A
Other versions
GB2121474B (en
GB8308287D0 (en
Inventor
Tamotsu Kasuya
Hiroshi Sugito
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of GB8308287D0 publication Critical patent/GB8308287D0/en
Publication of GB2121474A publication Critical patent/GB2121474A/en
Application granted granted Critical
Publication of GB2121474B publication Critical patent/GB2121474B/en
Expired legal-status Critical Current

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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/14—Control of the alternation between or the operation of exhaust drive and other drive of a pump, e.g. dependent on speed
    • 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
    • F02B21/00—Engines characterised by air-storage chambers
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • 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

Abstract

Compressed air from a tank 17, charged by an engine driven compressor 15 or by the compressor 5 (Figure 7) is fed into the exhaust gas upstream of the turbine 4 in response to predetermined accelerator pedal depression. <IMAGE>

Description

SPECIFICATION Turbocharging This invention relates to the turbocharging of internal combustion engines.
It has previously been suggested to employ two-stage turbocharging for increasing the engine power of internal combustion engines. However, we have found that the response of turbochargers in two-stage turbocharging to the acceleration of the engine is not good. This is especially so during low engine speeds. Previous attempts to solve this probiem have not in our view been satisfactory.
In accordance with a first aspect of the present invention, there is provided a two-stage turbocharging system for an internal combustion engine, comprising: a first turbocharger having a first turbine and a first compressor, said first turbine being arranged for connection on its input side with said engine and said first compressor being arranged for connection on its output side with said engine; a second turbocharger having a second turbine and a second compressor, said second turbine being connected on its input side with the output side of said first turbine and said second compressor being connected on its output side with the input side of said first compressor; and an air tank containing compressed air therein connected on its output side with the input side of said first turbine.
In a second and alternative aspect of this invention, we provide a turbocharged internal combustin engine, provided with a first turbocharger having a first turbine and a first compressor, said first turbine being connected on its input side with said engine and said first compressor being connected on its output side with said engine; a second turbocharger having a second turbine and a second compressor, said second turbine being connected on its input side with the output side of said first turbine and said second compressor being connected on its output side with the input side of said first compressor; and an air tank containing compressed air therein connected on its output side with the input side of said first turbine.
In one arrangement described below, the air tank is connected with a third compressor driven directly by the engine. In another arrangement, also described below, instead of providing a third compressor, the air tank is connected with the output side of the first compressor.
In the accompanying drawings: Fig. 1 is a schematic illustration of a two-stage turbocharging system according to the present invention; Fig. 2 is a graph plotting gas expansion ratio at a turbine against time elapsed wherein solid line represents the turbocharging system of the present invention and dotted line denotes a typical prior art system; Fig. 3 is a graph plotting number of revolutions of a turbocharger against time elapsed; Fig. 4 is a graph plotting turbocharged pressure against time elapsed; Fig. 5 is a graph plotting number of revolutions of the engine against time elapsed; Fig. 6 is a graph plotting pressure in the air tank against time elapsed; and Fig. 7 is similar to Fig. 1 but showing another embodiment of the present invention.
The present invention will now be described in detail below with reference to the accompanying drawings.
Reference numeral 1 denotes an engine, 2 a first turbocharger, 3 a second turbocharger for turbocharging the engine. The first turbocharger 2 comprises a high pressure turbine 4 and a compressor 5 both mounted on a common shaft 6. The second turbocharger 3 comprises a low pressure turbine 7 and a compressor 8 both mounted on common shaft 9. Exhaust gas from the engine 1 is introduced through a first exhaust pipe 10 into the input side of the high pressure turbine 4 thereby rotating the latter. After driving the high pressure turbine 4, pressure reduced exhaust gas is expelled from the high pressure turbine 4 and is introduced into the input side of the low pressure turbine 7 through a second exhaust pipe 11 thereby rotating the low pressure turbine 7. The output side of the low pressure turbine is open to the atmosphere.
As the compressor 8 is driven by the low pressure turbine 7, fresh air introduced from the atmosphere is compressed thereby and the compressed air is introduced through a first induction pipe 12 into the compressor 5 where the air is further compressed and is supplied through a second induction pipe 13 to the induction side of the engine 1.
Mounted adjacent to the engine 1 is another compressor 1 5 which is connected to and driven by a crankshaft of the engine. The output side of the compressor 1 5 is connected through a conduit 16 with an air tank 1 7. The output side of the air tank 17 is connected through a conduit 18 with the input side of the high pressure turbine 4, such as the first exhaust pipe 10 as shown or a turbine casing of the turbine 4. Disposed in the conduit 1 8 is a solenoid-operated valve 1 9 which is normaily ciosed and is opened when its solenoid is energized. A switch 20 is disposed in an electric circuit 21 of the solenoid-operated valve 19. The switch 20 is adapted to be closed when an acceleration pedal is depressed to a predetermined extent.
In operation, compressed air supplied from the compressor 1 5 is stored in the air tank 17 and is introduced or injected into the input side of the high pressure turbine 4 only when the acceleration pedal is depressed to a predetermined extent. As a result, performance curves of the two-stage turbocharging system of the present invention are improved as shown in solid lines in Figs. 2 to 5 as compared with a typical two-stage turbocharging of a prior art system shown in dotted lines. It will be appreciated when observing Fig. 6 that air pressure assist is especially large at the beginning of the acceleration where response lag of the turbochargers is particularly large. Therefore, with air pressure assist from the air tank 17, acceleration performance of the engine is improved remarkably.
Referring to Fig. 7 showing another embodiment of the present invention, a branch conduit 22 is arranged for interconnecting the second induction pipe 13 and the air tank 1 7 and a check valve 23 is disposed in the conduit 22 for allowing air flow only from the compressor 5 to the air tank 1 7. Therefore in this embodiment, compressed air is supplied from the compressor 5 to the air tank 17 without additionally providing the compressor 15 of the embodiment of Fig. 1.
Other constructions of this embodiment are the same as those of Fig. 1

Claims (7)

Claims
1. A two-stage turbocharging system for an internal combustion engine, comprising: a first turbocharger having a first turbine and a first compressor, said first turbine being arranged for connection on its input side with said engine and said first compressor being arranged for connection on its output side with said engine; a second turbocharger having a second turbine and a second compressor, said second turbine being connected on its input side with the output side of said first turbine and said second compressor being connected on its output side with the input side of said first compressor; and an air tank containing compressed air therein connected on its output side with the input side of said first turbine.
2. A two-stage turbocharging system according to Claim 1, further comprising a third compressor adapted to be driven directly by said engine and wherein said tank is connected on its input side with said third compressor.
3. A two-stage turbocharging system according to Claim 1 , further comprising first conduit means for connecting the output side of said first compressor with said air tank, and check valve means disposed in said first conduit means for allowing air flow only from said first compressor to said air tank.
4. A two-stage turbocharging system for an internal combustion engine according to Claims 2 or 3 further comprising conduit means for connecting the output side of said air tank with the input side of said first turbine, valve means disposed in said conduit means for opening and closing the same, and means adapted to be actuated by the depression of an acceleration pedal for opening said valve means.
5. For an internal combustion engine, a twostage turbocharging system substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
6. A turbocharged internal combustion engine, provided with a first turbocharger having a first turbine and a first compressor, said first turbine being connected on its input side with said engine and said first compressor being connected on its output side with said engine; a second turbocharger having a second turbine and a second compressor, said second turbine being connected on its input side with the output side of said first turbine and said second compressor being connected on its output side with the input side of said first compressor; and an air tank containing compressed air therein connected on its output side with the input side of said first turbine.
7. A turbocharged internal combustion engine substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB08308287A 1982-03-26 1983-03-25 Two-stage i.c. engine turbocharging Expired GB2121474B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982041917U JPS58146036U (en) 1982-03-26 1982-03-26 Two-stage engine supercharging device

Publications (3)

Publication Number Publication Date
GB8308287D0 GB8308287D0 (en) 1983-05-05
GB2121474A true GB2121474A (en) 1983-12-21
GB2121474B GB2121474B (en) 1985-07-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08308287A Expired GB2121474B (en) 1982-03-26 1983-03-25 Two-stage i.c. engine turbocharging

Country Status (2)

Country Link
JP (1) JPS58146036U (en)
GB (1) GB2121474B (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754843A2 (en) * 1995-07-19 1997-01-22 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Internal combustion engine having an exhaust turbocharger and method for accelerating the exhaust turbocharger of an internal combustion engine
EP1028233A2 (en) 1999-02-12 2000-08-16 Wärtsilä NSD Oy Ab Combi power plant
EP1233162A1 (en) * 2001-01-04 2002-08-21 Superdrive Inc. Supplemental air system for engine exhaust manifolds
FR2831606A1 (en) * 2001-10-31 2003-05-02 Peugeot Citroen Automobiles Sa MOTORIZATION SYSTEM FOR VEHICLE
FR2833650A1 (en) * 2001-12-14 2003-06-20 Peugeot Citroen Automobiles Sa Motor vehicle i.c. engine operating system uses gas stored in one mode to enhance performance in others
DE10315148A1 (en) * 2003-04-03 2004-11-04 Mtu Friedrichshafen Gmbh Operating supercharger for IC engine, has a compressor for compressing air and an exhaust gas turbocharger with a blower and a turbine
US6862885B1 (en) 2003-11-20 2005-03-08 Super Drive, Inc. Air injection apparatus for a turbocharged diesel engine
FR2895454A1 (en) 2005-12-23 2007-06-29 Renault Sas Internal combustion engine multi-stage supercharging system has by-pass duct connecting inlet circuit downstream of smallest compressor to exhaust circuit
CN100575679C (en) * 2005-02-24 2009-12-30 克诺尔商用车制动系统有限公司 Internal-combustion engine dilution air plant and the method for improving the internal-combustion engine acceleration and discharging
WO2012055514A1 (en) 2010-10-27 2012-05-03 Mtu Friedrichshafen Gmbh Internal combustion engine
DE102011079036A1 (en) * 2011-07-12 2013-01-17 Mtu Friedrichshafen Gmbh Internal combustion engine, watercraft and method for operating a ship supply network with an internal combustion engine
US20130305714A1 (en) * 2012-05-17 2013-11-21 Ford Global Technologies, Llc Boost air management for improved engine performance
DE102012021339A1 (en) * 2012-10-31 2014-04-30 Eads Deutschland Gmbh Unmanned aerial vehicle and operating procedures therefor
NL2009986C2 (en) * 2012-12-14 2014-06-17 Arie Jan Hekman Method for operating a turbocharged internal combustion engine with turbolag compensation.
US20140182286A1 (en) * 2012-12-28 2014-07-03 Volvo Car Corporation Turbocharger
WO2015049469A1 (en) * 2013-10-04 2015-04-09 Societe De Motorisations Aeronautiques Aeronautical combustion machine comprising a reserve of pressurized fluid for starting a closed-cycle engine
EP2873828A1 (en) * 2013-11-15 2015-05-20 Volvo Car Corporation Improved turbocharger system
GB2523855A (en) * 2014-03-07 2015-09-09 Cummins Ltd Turbomachine arrangement
EP2960458A1 (en) * 2014-06-27 2015-12-30 Volvo Car Corporation Turbocharged engine with compressed air tank for supplying additional air to the exhaust gas turbine when the requested engine load is high enough
EP3051098A1 (en) * 2015-02-02 2016-08-03 Volvo Car Corporation Twin scroll turbocharger device with improved turbo response
US20160237882A1 (en) * 2016-04-29 2016-08-18 Caterpillar Inc. Turbocharger system for an engine
US20190093548A1 (en) * 2017-09-25 2019-03-28 Hyundai Motor Company Apparatus for improving efficiency of turbocharger engine
WO2021205139A1 (en) * 2020-04-09 2021-10-14 Bowman Power Group Limited A turbocharged engine system and a method of controlling boost pressure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB537483A (en) * 1939-03-18 1941-06-24 Walter Schenker Improvements in or relating to internal combustion engines operating with supercharging
GB575502A (en) * 1943-05-07 1946-02-20 Goetaverken Ab Improvements in internal combustion engine plants including scavenging-air blowers driven by exhaust actuated turbines
GB620376A (en) * 1946-01-16 1949-03-23 British Thomson Houston Co Ltd Improvements in and relating to exhaust driven turbo-superchargers of internal combustion engines
GB804124A (en) * 1955-08-22 1958-11-05 Bbc Brown Boveri & Cie Improvements in or relating to internal combustion engines
GB1140877A (en) * 1965-05-13 1969-01-22 Maschf Augsburg Nuernberg Ag Improvements in or relating to internal combustion engines
GB1504544A (en) * 1974-12-18 1978-03-22 Bbc Brown Boveri & Cie Two-stage exhaust-gas turbocharger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB537483A (en) * 1939-03-18 1941-06-24 Walter Schenker Improvements in or relating to internal combustion engines operating with supercharging
GB575502A (en) * 1943-05-07 1946-02-20 Goetaverken Ab Improvements in internal combustion engine plants including scavenging-air blowers driven by exhaust actuated turbines
GB620376A (en) * 1946-01-16 1949-03-23 British Thomson Houston Co Ltd Improvements in and relating to exhaust driven turbo-superchargers of internal combustion engines
GB804124A (en) * 1955-08-22 1958-11-05 Bbc Brown Boveri & Cie Improvements in or relating to internal combustion engines
GB1140877A (en) * 1965-05-13 1969-01-22 Maschf Augsburg Nuernberg Ag Improvements in or relating to internal combustion engines
GB1504544A (en) * 1974-12-18 1978-03-22 Bbc Brown Boveri & Cie Two-stage exhaust-gas turbocharger

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0754843A2 (en) * 1995-07-19 1997-01-22 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Internal combustion engine having an exhaust turbocharger and method for accelerating the exhaust turbocharger of an internal combustion engine
EP0754843A3 (en) * 1995-07-19 2000-05-31 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Internal combustion engine having an exhaust turbocharger and method for accelerating the exhaust turbocharger of an internal combustion engine
EP1028233A2 (en) 1999-02-12 2000-08-16 Wärtsilä NSD Oy Ab Combi power plant
EP1233162A1 (en) * 2001-01-04 2002-08-21 Superdrive Inc. Supplemental air system for engine exhaust manifolds
FR2831606A1 (en) * 2001-10-31 2003-05-02 Peugeot Citroen Automobiles Sa MOTORIZATION SYSTEM FOR VEHICLE
EP1308614A1 (en) * 2001-10-31 2003-05-07 Peugeot Citroen Automobiles SA Drive system for motor vehicles
FR2833650A1 (en) * 2001-12-14 2003-06-20 Peugeot Citroen Automobiles Sa Motor vehicle i.c. engine operating system uses gas stored in one mode to enhance performance in others
DE10315148A1 (en) * 2003-04-03 2004-11-04 Mtu Friedrichshafen Gmbh Operating supercharger for IC engine, has a compressor for compressing air and an exhaust gas turbocharger with a blower and a turbine
US6862885B1 (en) 2003-11-20 2005-03-08 Super Drive, Inc. Air injection apparatus for a turbocharged diesel engine
CN100575679C (en) * 2005-02-24 2009-12-30 克诺尔商用车制动系统有限公司 Internal-combustion engine dilution air plant and the method for improving the internal-combustion engine acceleration and discharging
FR2895454A1 (en) 2005-12-23 2007-06-29 Renault Sas Internal combustion engine multi-stage supercharging system has by-pass duct connecting inlet circuit downstream of smallest compressor to exhaust circuit
DE102010043027A1 (en) 2010-10-27 2012-05-03 Mtu Friedrichshafen Gmbh Internal combustion engine
DE102010043027B4 (en) 2010-10-27 2019-08-14 Mtu Friedrichshafen Gmbh Internal combustion engine
WO2012055514A1 (en) 2010-10-27 2012-05-03 Mtu Friedrichshafen Gmbh Internal combustion engine
DE102011079036A1 (en) * 2011-07-12 2013-01-17 Mtu Friedrichshafen Gmbh Internal combustion engine, watercraft and method for operating a ship supply network with an internal combustion engine
WO2013007378A2 (en) 2011-07-12 2013-01-17 Mtu Friedrichshafen Gmbh Internal combustion machine, water craft, and method for operating the power supply system of a ship using an internal combustion machine
DE102011079036B4 (en) 2011-07-12 2018-12-20 Mtu Friedrichshafen Gmbh Internal combustion engine system, watercraft and method for operating a marine supply network with an internal combustion engine
US20130305714A1 (en) * 2012-05-17 2013-11-21 Ford Global Technologies, Llc Boost air management for improved engine performance
US9279396B2 (en) * 2012-05-17 2016-03-08 Ford Global Technologies, Llc Boost air management for improved engine performance
DE102012021339A1 (en) * 2012-10-31 2014-04-30 Eads Deutschland Gmbh Unmanned aerial vehicle and operating procedures therefor
WO2014092578A1 (en) 2012-12-14 2014-06-19 Hekman Arie Jan Method for operating a turbocharged internal combustion engine with turbolag compensation
NL2009986C2 (en) * 2012-12-14 2014-06-17 Arie Jan Hekman Method for operating a turbocharged internal combustion engine with turbolag compensation.
US20140182286A1 (en) * 2012-12-28 2014-07-03 Volvo Car Corporation Turbocharger
US9322322B2 (en) * 2012-12-28 2016-04-26 Volvo Car Corporation Turbocharger
WO2015049469A1 (en) * 2013-10-04 2015-04-09 Societe De Motorisations Aeronautiques Aeronautical combustion machine comprising a reserve of pressurized fluid for starting a closed-cycle engine
CN104653279A (en) * 2013-11-15 2015-05-27 沃尔沃汽车公司 Improved turbocharger system
EP2873828A1 (en) * 2013-11-15 2015-05-20 Volvo Car Corporation Improved turbocharger system
US9890696B2 (en) 2013-11-15 2018-02-13 Volvo Car Corporation High and low pressure turbocharger system with compressed gas tank
GB2523855B (en) * 2014-03-07 2020-04-01 Cummins Ltd Turbomachine arrangement
GB2523855A (en) * 2014-03-07 2015-09-09 Cummins Ltd Turbomachine arrangement
CN105221246A (en) * 2014-06-27 2016-01-06 沃尔沃汽车公司 The turbosupercharger improved
EP2960458A1 (en) * 2014-06-27 2015-12-30 Volvo Car Corporation Turbocharged engine with compressed air tank for supplying additional air to the exhaust gas turbine when the requested engine load is high enough
CN105221246B (en) * 2014-06-27 2019-07-02 沃尔沃汽车公司 Method for the turbo charge system of vehicle and for controlling the system
US9719438B2 (en) 2014-06-27 2017-08-01 Volvo Car Corporation Turbocharger
US10060340B2 (en) 2015-02-02 2018-08-28 Volvo Car Corporation Twin scroll turbocharger device with improved turbo response
CN105840296A (en) * 2015-02-02 2016-08-10 沃尔沃汽车公司 Twin scroll turbocharger device with improved turbo response
CN105840296B (en) * 2015-02-02 2020-03-03 沃尔沃汽车公司 Twin scroll turbocharger arrangement with improved turbine response
EP3051098A1 (en) * 2015-02-02 2016-08-03 Volvo Car Corporation Twin scroll turbocharger device with improved turbo response
US10054039B2 (en) * 2016-04-29 2018-08-21 Caterpillar Inc. Turbocharger system for an engine
US20160237882A1 (en) * 2016-04-29 2016-08-18 Caterpillar Inc. Turbocharger system for an engine
US20190093548A1 (en) * 2017-09-25 2019-03-28 Hyundai Motor Company Apparatus for improving efficiency of turbocharger engine
WO2021205139A1 (en) * 2020-04-09 2021-10-14 Bowman Power Group Limited A turbocharged engine system and a method of controlling boost pressure
GB2594058A (en) * 2020-04-09 2021-10-20 Bowman Power Group Ltd A Turbocharged engine system and a method of controlling boost pressure
GB2594058B (en) * 2020-04-09 2023-10-25 Bowman Power Group Ltd Turbocharged engine systems and a method of increasing boost pressure

Also Published As

Publication number Publication date
GB2121474B (en) 1985-07-24
GB8308287D0 (en) 1983-05-05
JPS58146036U (en) 1983-10-01

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