US3734074A - Opposed piston two-stroke cycle internal combustion engines - Google Patents

Opposed piston two-stroke cycle internal combustion engines Download PDF

Info

Publication number
US3734074A
US3734074A US00154503A US3734074DA US3734074A US 3734074 A US3734074 A US 3734074A US 00154503 A US00154503 A US 00154503A US 3734074D A US3734074D A US 3734074DA US 3734074 A US3734074 A US 3734074A
Authority
US
United States
Prior art keywords
exhaust
engine
cylinder
ports
turbocharger
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 - Lifetime
Application number
US00154503A
Other languages
English (en)
Inventor
J Butler
J Jordan
F Orbeck
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.)
MARINE DESIGN CONSULTANTS Ltd
Doxford and Sunderland Ltd
Original Assignee
Doxford and Sunderland 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 Doxford and Sunderland Ltd filed Critical Doxford and Sunderland Ltd
Application granted granted Critical
Publication of US3734074A publication Critical patent/US3734074A/en
Assigned to MARINE DESIGN CONSULTANTS LIMITED reassignment MARINE DESIGN CONSULTANTS LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). 6-8-56 EFFECTIVE DATE Assignors: BRITISH SHIPBUILDERS (ENGINEERING & TECHNICAL SERVICES LIMITED)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02B75/00—Other engines
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • 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
    • F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
    • F02B2700/03—Two stroke engines
    • F02B2700/037—Scavenging or charging channels or openings

Definitions

  • ABSTRACT A multi-cy1inder, opposed piston, two-stroke cycle internal combustion engine, of the kind in which air is admitted to the cylinders under pressure through ports in the cylinder walls at or near the lower ends thereof (i.e. the ends nearest the crankshaft), and exhausted through ports in the cylinder walls at the other ends of the cylinders, has two exhaust driven turbochargers. The gases are exhausted from each cylinder through two sets of ports, the one set of ports for each cylinder being linked to one turbocharger and the other sets to the other turbocharger, so that each turbocharger is driven by approximately half the exhaust gases leaving the engine. 1
  • the invention relates to opposed piston two-stroke cycle internal combustion engines of the kind in which the pistons are operatively connected to separate cranks on a single crank-shaft and in which air for scavenging and combustion is admitted under pressure to the engine cylinder through ports in the cylinder wall at or near one end thereof (usually the lower end, i.e. the end nearer to the crank-shaft) and the exhaust taking place through ports in the cylinder wall at or adjacent the other end thereof.
  • Such engines will hereinafter be referred to as engines of the kind described.
  • the invention provides a multi-cylinder in line engine of the kind described having a first exhaust driven turbocharger at one end of the engine, and a second exhaust driven turbocharger at the other end of the engine, the first turbocharger being driven by exhaust gases leaving the cylinders from one side of the engine, and the second turbocharger being driven by exhaust gases leaving the cylinders from the other side of the engine.
  • each cylinder is surrounded by an exhaust manifold arranged to direct exhaust gases issuing from the exhaust ports at the said one side of the engine to wards the said one end of the engine, and arranged to direct exhaust gases issuing from the exhaust ports at the said other side of the engine towards the said other end of the engine.
  • FIG. 1 shows a plan view of an engine according to the invention
  • FIG. 2 shows a horizontal section through a cylinder and exhaust manifold, looking from below the engine
  • FIG. 3 shows a vertical section along line BCD of FIG. 2.
  • FIG. 1 shows a six-cylinder in line two-stroke cycle opposed piston engine (for example of the kind described in British Patent specification No. 580704) having three compressor 20, 21 and 22 driven from the three end cylinders.
  • the engine is provided with two turbo-blowers 26 and 27 which are driven by the exhaust gases.
  • Turbo-blower 26 is driven by exhaust gases leaving the cylinders from side of the engine
  • turbo-blower 27 is driven by exhaust gases leaving the cylinders from side 11 of the engine.
  • Each cylinder is provided with an exhaust manifold or belt which directs the exhaust gas leaving the cylinder at side 10 of the engine into pipe 28, and directs the exhaust gas leaving the cylinder at side 11 of the engine into pipe 29.
  • the arrangement makes it possible to utilize large area exhaust ports and obtain a relatively free flow of gas to the exhaust pipes 28, 29 and turbochargers 26, 27.
  • Each cylinder as it exhausts at high velocity tends to produce an extractor effect on other cylinders which may be just starting, or building up, their exhaust phase.
  • Air from the turbo-blowers is delivered via pipes 30, 32 to manifold 31 which acts as an air reservoir and supplies the compressors 20, 21 and 22.
  • FIG. 2 One example of exhaust belt is shown in FIG. 2.
  • the associated cylinder 1 houses a piston 7 and has exhaust ports 2. Surrounding the cylinder in the region of the exhaust ports is an exhaust belt 3.
  • the belt defined gas passageways 5, 6.
  • the passageways 5 at one side of the cylinder are arranged to direct exhaust gases towards pipe 28 in the direction of turbo-blower 26, and passageways 6 at the other side of the cylinder are arranged to direct exhaust gases towards pipe 29 in the direction of turbo-blower 27.
  • the belt 3 takes advantage of the direction of swirl of gases leaving the cylinder (clockwise as viewed from above the engine). Since the swirl is tending to direct the exhaust gases in the directions defined by passageways, the flow of gases down the passageways is facilitated.
  • FIG. 3 shows how the height of one of the passageways 6 varies.
  • the passageways are substantially rectangular in section, the height of "the passageways increasing in the radial direction.
  • each cylinder is surrounded by an exhaust manifold arranged to direct exhaust gases issuing from the exhaust ports at the said one side of the engine towards the said one end of the engine, and arranged to direct exhaust gases issuing from the exhaust ports at the said other side of the engine towards the said other end of the engine.
  • An engine as claimed in claim 2 in which there are provided six cylinders and twelve pistons in said cylinders, air being admitted to each cylinder in the region of the end nearer the crankshaft, in which the turbochargers supply air to compressors which in turn supply air to the cylinders, and in which each cylinder is provided with four exhaust ports, two such ports being linked to each turbocharger by rectangular passageways and by exhaust manifolds, the said ports, passageways and exhaust manifolds being arranged to direct the flow of exhaust gas in the same sense as the direction of swirl of the gas in the cylinder, and the passageways increasing in height in the radial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
US00154503A 1970-06-19 1971-06-18 Opposed piston two-stroke cycle internal combustion engines Expired - Lifetime US3734074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29951/70A GB1291914A (en) 1970-06-19 1970-06-19 Improvements in or relating to opposed piston two-stroke cycle internal combustion engines

Publications (1)

Publication Number Publication Date
US3734074A true US3734074A (en) 1973-05-22

Family

ID=10299858

Family Applications (1)

Application Number Title Priority Date Filing Date
US00154503A Expired - Lifetime US3734074A (en) 1970-06-19 1971-06-18 Opposed piston two-stroke cycle internal combustion engines

Country Status (10)

Country Link
US (1) US3734074A (es)
BE (1) BE768715A (es)
CH (1) CH552748A (es)
DE (1) DE2130353A1 (es)
ES (1) ES198006Y (es)
FR (1) FR2097974A5 (es)
GB (1) GB1291914A (es)
LU (1) LU63366A1 (es)
NL (1) NL7108293A (es)
SE (1) SE362115B (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760704A (en) * 1985-06-04 1988-08-02 Sanshin Kogyo Kabushiki Kaisha Multi-cylinder engine with turbocharger
US4993228A (en) * 1988-05-27 1991-02-19 Mazda Motor Corporation Internal combustion engine with turbo supercharger
US5884478A (en) * 1998-04-21 1999-03-23 Edmonds, Jr.; Dean S. System for cross turbocharging

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760704A (en) * 1985-06-04 1988-08-02 Sanshin Kogyo Kabushiki Kaisha Multi-cylinder engine with turbocharger
US4993228A (en) * 1988-05-27 1991-02-19 Mazda Motor Corporation Internal combustion engine with turbo supercharger
US5884478A (en) * 1998-04-21 1999-03-23 Edmonds, Jr.; Dean S. System for cross turbocharging
WO1999054606A1 (en) * 1998-04-21 1999-10-28 Edmonds Dean S Jr System for cross turbocharging

Also Published As

Publication number Publication date
SE362115B (es) 1973-11-26
ES198006Y (es) 1975-10-01
FR2097974A5 (es) 1972-03-03
ES198006U (es) 1975-05-01
NL7108293A (es) 1971-12-21
GB1291914A (en) 1972-10-04
LU63366A1 (es) 1971-09-20
DE2130353A1 (de) 1971-12-23
BE768715A (fr) 1971-12-20
CH552748A (de) 1974-08-15

Similar Documents

Publication Publication Date Title
US2522649A (en) Two-stroke cycle engine cylinder and pump
US2858666A (en) Turbocharging of two-cycle engines
US9551220B2 (en) Open intake and exhaust chamber constructions for an air handling system of an opposed-piston engine
GB1465413A (en) Internal combustion engine
GB1263979A (en) Air-cooled internal combustion engine with soundproofing casing
US4033302A (en) Four-stroke, multicylinder, spark ignition, fuel injection internal combustion engine
US3994129A (en) Exhaust gas cleaning device for internal combustion engines
US4548039A (en) Turbocharged internal combustion engine
CS198145B2 (en) Four-stroke combustion engine
US4599863A (en) Compound internal combustion and external combustion engine
US4311009A (en) Internal combustion engine
US3734074A (en) Opposed piston two-stroke cycle internal combustion engines
US2249997A (en) Internal combustion method
KR920701621A (ko) 디젤-압축 점화방식의 2행정 내연기관
US2889682A (en) Two-cycle internal combustion engine
US3786630A (en) Device for connecting exhaust manifold sets to the turbo-blowers of a supercharged internal-combustion engine
GB1326503A (en) Supercharged internal combustion engines
US1921906A (en) Exhaust turbo-charged, double-act-ing internal combustion engine
US1982146A (en) Internal combustion engine of the diesel, semidiesel, compression ignition, or injection type
US3970057A (en) Internal combustion engine
US2295619A (en) Internal combustion engine
US1656581A (en) Two-cycle multicylinder internal-combustion engine
SU1390400A1 (ru) Двухтактный двигатель внутреннего сгорани
US3492978A (en) Internal combustion engine manifold
US2392464A (en) Internal-combustion engine

Legal Events

Date Code Title Description
AS Assignment

Owner name: MARINE DESIGN CONSULTANTS LIMITED

Free format text: CHANGE OF NAME;ASSIGNOR:BRITISH SHIPBUILDERS (ENGINEERING & TECHNICAL SERVICES LIMITED);REEL/FRAME:004647/0496

Effective date: 19861121