GB709211A - Improvements in and relating to supercharged two-stroke internal combustion engines - Google Patents

Improvements in and relating to supercharged two-stroke internal combustion engines

Info

Publication number
GB709211A
GB709211A GB10234/51A GB1023451A GB709211A GB 709211 A GB709211 A GB 709211A GB 10234/51 A GB10234/51 A GB 10234/51A GB 1023451 A GB1023451 A GB 1023451A GB 709211 A GB709211 A GB 709211A
Authority
GB
United Kingdom
Prior art keywords
turbine
area
exhaust
turbines
inlet
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
GB10234/51A
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.)
Burmeister and Wains Motorog Maskinfabrik AS
Original Assignee
Burmeister and Wains Motorog Maskinfabrik AS
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 Burmeister and Wains Motorog Maskinfabrik AS filed Critical Burmeister and Wains Motorog Maskinfabrik AS
Publication of GB709211A publication Critical patent/GB709211A/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
    • F02B37/007—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in parallel, e.g. at least one pump supplying alternatively
    • 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
    • F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107—More than one exhaust manifold or exhaust collector
    • 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
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/184—Number of cylinders ten
    • 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

709,211. Gas turbine plant. AKTIESELSKABET BURMEISTER & WAIN'S MASKIN-OG SKIBSBYGGERI. May 1, 1951 [March 10, 1951], No. 10234/51. Class 110(3) [Also in Group XXVII] The exhaust gases from engine cylinders a-c, Fig. 3, are led to a turbine 13 which drives a charging and scavenging pump 21 whilst the gases from cylinders d-f are led to another similar turbine compressor unit 20, (see also Group XXVII). The turbines, which may be arranged as shown or with their inlets in line with the exhaust pipe portions leading from the exhaust valves, may comprise more than one stage and each nozzle ring may be divided into two or more sectors. In one embodiment each turbine has two inlet channels 90, 91, Fig. 7, of circular cross-section which remain constant in area though differing in shape throughout their length until they become semi-circular at the nozzle ring 93. Immediately down-stream of the guide vanes 94 and turbine vanes 96 is a vaned grid 97 for straightening the gas flow, followed by a diffuser formed beween the walls 100 and 101 in the turbine casing and a ring 102 connected to wall 101 and which, by further walls 103 is divided into a number of sectors. The vanes 94, 96 and 97 are made with rounded inlet edges. The turbines are designed to conform with the formula where E is the smallest passage area of the first guide vane ring, N is the number of stages, G is the degree of reaction and Fm is the mean value of the passage area of the engine exhaust valves during the period between the opening of the exhaust and scavenging ports. The engine exhaust pipes, which decrease in section as the turbine is approached, have as small a volume as possible whilst any unavoidable bends therein are such that the radius of curvature for the mean flow curve is at least seven times the ratio between the cross-sectional area and the length of the pipe circumference. The turbines are arranged so that the ratio between the nozzle area E measured at risht angles to the flow direction and the corresponding inlet area at or before the turbine inlet is between 0.5 and 0.8 in order to avoid reflection of the pressure wave. The exhaust pipes and turbine inlet channels are insulated to reduce the heat loss.
GB10234/51A 1951-03-10 1951-05-01 Improvements in and relating to supercharged two-stroke internal combustion engines Expired GB709211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK709211X 1951-03-10

Publications (1)

Publication Number Publication Date
GB709211A true GB709211A (en) 1954-05-19

Family

ID=8152387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10234/51A Expired GB709211A (en) 1951-03-10 1951-05-01 Improvements in and relating to supercharged two-stroke internal combustion engines

Country Status (2)

Country Link
FR (1) FR1082616A (en)
GB (1) GB709211A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968342C (en) * 1955-02-10 1958-02-06 Daimler Benz Ag Exhaust gas turbine
GB2568733A (en) * 2017-11-24 2019-05-29 Cummins Ltd Method of designing a turbine
CN111033012A (en) * 2017-08-28 2020-04-17 株式会社丰田自动织机 Turbocharger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2415200A2 (en) * 1977-01-24 1979-08-17 Semt Volute for IC engine turbocharger - has progressively decreasing connecting cross section providing constant gas velocity

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968342C (en) * 1955-02-10 1958-02-06 Daimler Benz Ag Exhaust gas turbine
CN111033012A (en) * 2017-08-28 2020-04-17 株式会社丰田自动织机 Turbocharger
CN111033012B (en) * 2017-08-28 2021-12-28 株式会社丰田自动织机 Turbocharger
GB2568733A (en) * 2017-11-24 2019-05-29 Cummins Ltd Method of designing a turbine
GB2568733B (en) * 2017-11-24 2022-06-15 Cummins Ltd Method of designing a turbine
US11542862B2 (en) 2017-11-24 2023-01-03 Cummins Ltd Effect of the nozzle width to harness on engine pulse energy

Also Published As

Publication number Publication date
FR1082616A (en) 1954-12-30

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