US3592173A - Multicylinder internal combustion engine - Google Patents

Multicylinder internal combustion engine Download PDF

Info

Publication number
US3592173A
US3592173A US839433A US3592173DA US3592173A US 3592173 A US3592173 A US 3592173A US 839433 A US839433 A US 839433A US 3592173D A US3592173D A US 3592173DA US 3592173 A US3592173 A US 3592173A
Authority
US
United States
Prior art keywords
fuel
conduit
individual
cylinder
gravity
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
US839433A
Other languages
English (en)
Inventor
Dieter Frehe
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3592173A publication Critical patent/US3592173A/en
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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • 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
    • F02B25/26—Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24
    • 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

Definitions

  • This invention relates generally to a multicylinder fuel burning engine, and more particularly to a fuel burning engine having at least two superposed or vertically aligned cylinders, each of the cylinders being supplied with an air-fuel or airfuel-lubricating oil mixture through a common main induction pipe and successively through branched-off portions of a cylinder fuel induction conduit, the branchedoff portions being horizontally positioned, one relative to the other, relative to gravity.
  • an individual branch is provided for the individual cylinders and connected to the main induction pipe, the intake pipe having a vertical separating wall in the case of two cylinders, or having a plurality of separating walls in the case of more than two cylin ders to divide the fuel charge.
  • the adjacent and horizontally aligned individual cylinder induction conduits connected to the main induction pipe are curved in such a way that the cylinder end openings are situated in a common transverse plane through each ofthe cylinders.
  • an improved fuel induction system for an internal com bustion engine4 lt is another object of the present invention to provide an improved fuel induction system for use with an internal com bastion engine having generally vertically aligned cylinders.
  • lt is still a further object of the present invention to provide an improved input induction system for the individual cylinders of an internal combustion engine wherein the individual cylinder conduits equally divide up the fuel charge from the main induction pipe.
  • lt is still another object of the present invention to provide an improved system for eq ualizing the fuel charge to vertically disposed individual cylinders of an internal combustion en ⁇ gine.
  • FIG. l illustrates a partial side view of an air-cooled, twocylinder, fuelburning engine having two vertically, super posed cylinders:
  • FIG. 2 is a section of the engine of FlG. l, taken along thc line ll-ll thereof, and
  • FIGA 3 is a partial perspective view of the section of FIG. 2 illustrating the division and the course of the cylinder indue tion channels of the system ofthe present invention.
  • the invention has been rcpresentatively illustrated in con ⁇ nection with a two-cylinder internal combustion engine l0
  • the engine l0 includes a first cylinder l and a second cylinder 2, the second cylinder 2 being vertically superposed on the first cylinder l.
  • the engine l0 is illustrated as being of the aircooled type and includes a plurality of heat radiating fins integrally cast with the main body portion of the engine,
  • the cylinders l and 2 are provided with a fuel-air mixture from a carburetor device 8 through a main induction pipe 7 to the inlet portion of a common, individual cylinder neck portion 13 of an intake conduit assembly 3.
  • the carburetor 8 may be of a conventional type and is adapted to provide a mixture of fuel and air in the case of four'cycle engines and fuel, air and lubricating oil in the case of two-cycle enginesY
  • the main induction pipe 7 is provided with a flange portion I4 which is adapted to be bolted to thc inlet part 13 of the individual cylinder conduit assembly 3, For this purpose, a pair of threaded holes I6 (FIG. 3) are provided.
  • the individual cylinder induction system included a main induction pipe which was connected to a Y-section induction pipe, the fuel mixture being caused to divide for providing a fuel charge into the upper and lower cylinders. ln this situation, the divided fuel had a tendency to favor the lower cylinder and provide the lower cylinder with an extra charge of fuel, with the attenY dant difficulties noted above. ln accordance with the system of the present invention, the inlet section of the individual cylinder pipe 3 is provided with a divider element 6 which is generally vertically disposed to divide the inlet chamber of the pipe 3 into two equal sections 4a, 5u.
  • the two sections 4u, 5u are of generally equal cross section to preclude the possibility ofthe fuel charge favoring one sidi: or the other of partition 6.
  • the inlet openings 4u, 5a provide a fuel charge for the respective induction channels 4, 5 which are cast into the body portion ofthe engine l0.
  • the cylinder induction channels 4, 5 are provided to introduce fuel from the main induction pipe 7, through the individual induction channels 4 and 5, to the in terior portion ofthe cylinders l and 2.
  • the cylinder induction channels 4 and 5 are curved, as best illustrated in FIG. 3, in an area inter4v mediate the input and output sections ofthe individual induction channels.
  • the surfaces ofthe channels are curved in such a way that the output cylinder openings 4b and 5b are situated in a common plane which is generally vertical and transverse through the cylinders l and 2. ln this way the fuel enters the cylinder at approximately the same point for cach cylinder to further enhance the equal Characteristics of the fuel charge: and its combustion for each cylinder.
  • a fuel intake system for supplying a fuel charge mixture to at least one combustion chamber of an internal combustion engine, the intake system being under the influence of the force of gravity to affect the mixture of the charge duc to the force of gravity, the intake system comprising a common intake conduit, individual conduit means in tluid communica tion with said common conduit and downstream of said common conduit relative to the direction of flow of the fuel charge, said individual conduit means having portions arranged to direct the fuel charge upwardly and downwardly relative to the direction ofthe force of gravity, and apportioning means positioned between said individual conduit means portions and at least a portion of said common conduit for ap portioning, free of the effects of the force of gravity, the fuel charge to said individual conduit means.
  • said individual con duit means includes at least two individual conduit portions having outlet openings into at least one combustion chamber, the conduits being curved such that the outlet openings are superposed vertically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
US839433A 1968-07-22 1969-07-07 Multicylinder internal combustion engine Expired - Lifetime US3592173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681751746 DE1751746B1 (de) 1968-07-22 1968-07-22 Mehrzylinder-Brennkraftmaschine,insbesondere Zweitaktbrennkraftmaschine

Publications (1)

Publication Number Publication Date
US3592173A true US3592173A (en) 1971-07-13

Family

ID=5692446

Family Applications (1)

Application Number Title Priority Date Filing Date
US839433A Expired - Lifetime US3592173A (en) 1968-07-22 1969-07-07 Multicylinder internal combustion engine

Country Status (5)

Country Link
US (1) US3592173A (en, 2012)
BE (1) BE736021A (en, 2012)
DE (1) DE1751746B1 (en, 2012)
FR (1) FR2013427A1 (en, 2012)
GB (1) GB1206742A (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708980A (en) * 1971-07-26 1973-01-09 Gen Motors Corp Internal combustion engine and method of operation
US4244332A (en) * 1979-08-06 1981-01-13 Kusche David W Induction system for a V-type two-cycle engine
US4345551A (en) * 1981-10-19 1982-08-24 Brunswick Corporation Air and fuel induction system for a two cycle engine
DE3243702A1 (de) * 1981-12-04 1983-06-09 Kioritz Corp., Mitaka, Tokyo Vergaser-verbindungsrohr fuer brennkraftmaschinen
US5119769A (en) * 1991-05-30 1992-06-09 Brunswick Corporation Vertical three cylinder two cycle engine with single carburetor

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1418100A (en) * 1922-05-30 Cabbttbetob
US2227247A (en) * 1939-12-04 1940-12-31 Outboard Marine & Mfg Co Engine
US2264365A (en) * 1941-01-06 1941-12-02 Outboard Marine & Mfg Co Fuel and carburetion system
US2442217A (en) * 1945-08-13 1948-05-25 Chris Craft Corp Two-cycle crankcase compression engine, fuel distribution control
US2717584A (en) * 1953-04-27 1955-09-13 Harry G Upton Fuel system for two-cycle internal combustion engines
US3020707A (en) * 1960-12-07 1962-02-13 Kiekhaefer Corp Engine exhaust manifold construction
US3132635A (en) * 1962-07-30 1964-05-12 Outboard Marine Corp Internal combustion engine with crankcase compression
US3170449A (en) * 1962-10-03 1965-02-23 Goggi Corp Apparatus and method for introducing engine drainage into the fuel system
US3308797A (en) * 1964-04-06 1967-03-14 Civil De Estudio E Investigaci Internal combustion engine
US3395679A (en) * 1966-08-17 1968-08-06 Brunswick Corp Two-cycle engine and cylinder block therefor
US3472211A (en) * 1967-02-13 1969-10-14 Tillotson Mfg Co Fuel feed system and charge forming apparatus

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1418100A (en) * 1922-05-30 Cabbttbetob
US2227247A (en) * 1939-12-04 1940-12-31 Outboard Marine & Mfg Co Engine
US2264365A (en) * 1941-01-06 1941-12-02 Outboard Marine & Mfg Co Fuel and carburetion system
US2442217A (en) * 1945-08-13 1948-05-25 Chris Craft Corp Two-cycle crankcase compression engine, fuel distribution control
US2717584A (en) * 1953-04-27 1955-09-13 Harry G Upton Fuel system for two-cycle internal combustion engines
US3020707A (en) * 1960-12-07 1962-02-13 Kiekhaefer Corp Engine exhaust manifold construction
US3132635A (en) * 1962-07-30 1964-05-12 Outboard Marine Corp Internal combustion engine with crankcase compression
US3170449A (en) * 1962-10-03 1965-02-23 Goggi Corp Apparatus and method for introducing engine drainage into the fuel system
US3308797A (en) * 1964-04-06 1967-03-14 Civil De Estudio E Investigaci Internal combustion engine
US3395679A (en) * 1966-08-17 1968-08-06 Brunswick Corp Two-cycle engine and cylinder block therefor
US3472211A (en) * 1967-02-13 1969-10-14 Tillotson Mfg Co Fuel feed system and charge forming apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708980A (en) * 1971-07-26 1973-01-09 Gen Motors Corp Internal combustion engine and method of operation
US4244332A (en) * 1979-08-06 1981-01-13 Kusche David W Induction system for a V-type two-cycle engine
DE3025428A1 (de) * 1979-08-06 1981-02-26 Brunswick Corp Einlassanordnung fuer einen zweitakt- v-motor
US4345551A (en) * 1981-10-19 1982-08-24 Brunswick Corporation Air and fuel induction system for a two cycle engine
DE3243702A1 (de) * 1981-12-04 1983-06-09 Kioritz Corp., Mitaka, Tokyo Vergaser-verbindungsrohr fuer brennkraftmaschinen
US4475487A (en) * 1981-12-04 1984-10-09 Kioritz Corporation Joint-pipe for carburetor
US5119769A (en) * 1991-05-30 1992-06-09 Brunswick Corporation Vertical three cylinder two cycle engine with single carburetor
US5119771A (en) * 1991-05-30 1992-06-09 Brunswick Corporation Vertical three cylinder two cycle engine with single carburetor and manifold combination

Also Published As

Publication number Publication date
FR2013427A1 (en, 2012) 1970-04-03
BE736021A (en, 2012) 1969-12-16
DE1751746B1 (de) 1970-04-16
GB1206742A (en) 1970-09-30

Similar Documents

Publication Publication Date Title
US2382244A (en) Intake manifold arrangement
GB2055424A (en) Induction system for a two-stroke v-engine
US3444848A (en) Fuel-air mixture intake systems for internal combustion engines
US3303832A (en) High output engines
US3592173A (en) Multicylinder internal combustion engine
US2001669A (en) Manifold
US3924592A (en) Intake system for three-valve internal combustion engine
US1761958A (en) Dual intake manifold
DE3367652D1 (en) Covernor air inlet arrangement for internal-combustion engines, particularly multicylinder fuel injection internal-combustion engines
GB1519905A (en) Twostroke internal combustion engine
US3037493A (en) Intake manifold
US3363610A (en) Inlet manifold for internal-combustion engines
US1285129A (en) Multicylinder engine.
US3032022A (en) Internal combustion engine
US2808041A (en) Engine
US5056474A (en) Internal combustion engine having multiple carburetors and a starting mixture
US1916500A (en) Intake manifold
US3492978A (en) Internal combustion engine manifold
US2771864A (en) Intake manifold
US1683281A (en) Intake manifold
US2764140A (en) Intake manifold construction
US4470377A (en) Intake manifold for an internal-combustion engine with spark ignition
US2117983A (en) Internal combustion engine
US3014470A (en) Induction means
US2767699A (en) Induction system for internal combustion engine