US3884201A - Marine engine - Google Patents

Marine engine Download PDF

Info

Publication number
US3884201A
US3884201A US345275A US34527573A US3884201A US 3884201 A US3884201 A US 3884201A US 345275 A US345275 A US 345275A US 34527573 A US34527573 A US 34527573A US 3884201 A US3884201 A US 3884201A
Authority
US
United States
Prior art keywords
manifold
carburetor
crank case
cylinder
cylinder block
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
US345275A
Inventor
James D Cregan
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.)
AMERICAN CHALLENGER Corp Inc
AMERICAN CHALLENGER CORP
Original Assignee
AMERICAN CHALLENGER CORP
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 AMERICAN CHALLENGER CORP filed Critical AMERICAN CHALLENGER CORP
Priority to US345275A priority Critical patent/US3884201A/en
Priority to NL7404129A priority patent/NL7404129A/xx
Priority to AU67231/74A priority patent/AU6723174A/en
Priority to DE2414863A priority patent/DE2414863A1/en
Priority to FR7410504A priority patent/FR2223562B3/fr
Priority to JP49033596A priority patent/JPS5025922A/ja
Application granted granted Critical
Publication of US3884201A publication Critical patent/US3884201A/en
Assigned to AMERICAN CHALLENGER CORPORATION, INC. reassignment AMERICAN CHALLENGER CORPORATION, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: Internal Marine Combustion, Inc.
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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0002—Cylinder arrangements
    • F02F7/0012—Crankcases of V-engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • 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
    • F02B2075/1824—Number of cylinders six
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/34—Lateral camshaft position
    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • 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
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement

Definitions

  • That patent describes a marine engine in which a cover forms a generally closed compartment between the V-type cylinder banks.
  • An air horn in the compartment delivers air to the side entrance of a carburetor also mounted in the compartment. Air entering the air horn produces an eductive action which ventilates the crank case through passages between the compartment and the crank case.
  • a downdraft carburetor increases the volumetric efficiency of an internalcombustion engine while providing positive crank case ventilation through a generally closed compartment connected by passages to the crank case.
  • the cover which forms the generally closed compartment has an annular extension surrounding an opening in the cover.
  • a flame arrester is mounted over this opening.
  • An annular passageway is formed between the annular extension and a cover for the flame arrester. Carburetor air passing through this passageway produces an eductive effect which provides the positive crank case ventilation.
  • the centrally feeding manifold is clamped to the cylinder block solely by the cylinder heads which are secured in place over the edges of the manifold.
  • FIG. I is a cross sectional view taken in section of the engine.
  • FIG. 2 is a side elevational view in cross section of the engine.
  • the engine includes a cylinder block 12, cylinder heads 13 and 14 and a crank case 15.
  • Cylinder block 12 has six cylinders 16 arranged in pairs on opposite sides thereof, the cylinders extending upwardly and outwardly to form a V-type engine.
  • the invention is also applicable to 2, 4 and 8 cylinder V-type engines'
  • a crank case pan 17 extends below the crank case.
  • Crank shaft 18 has piston rods 19 and 20 connected to the throws thereof.
  • Cam shaft 21 is rotatably mounted above the crank shaft.
  • Inlet valves 22 and exhaust valves 23 are connected by links and rocker arms to the cam shaft 21.
  • Exhaust manifolds 24 are integrally formed within cylinder heads 13 and 14.
  • a cover 25 is bolted'and secured by the seal 27 to the cylinder heads 13 and 14. The cover forms a central compartment 28 between the cylinder heads.
  • a downdraft carburetor 29 is mounted in the compartment.
  • a centrally feeding manifold 30 has branches leading to the inlet valves 22.
  • An entrance in the top of the intake manifold is connected to the downdraft carburetor 29.
  • the cover 25 has an annular extension 31 which surrounds an opening in the top of the cover 25.
  • a flame arrester 32 is positioned in this opening and a domelike cover 33 is placed over the flame arrester.
  • the downdraft carburetor feeds fuel and air directly into the manifold 30 which is beneath it. This increases the volumetric efficiency of the engine and results in an increase in the horsepower. A greater volume of air and fuel can be fed into the manifold in this manner.
  • a plurality of apertures 34 are part of passages between the compartment 28 and the crank case I5. Air which enters the compartment under cover 33 and over extension 31 to the carburetor 29 has an eductive ef feet. This effect applies a pressure to the crank case to ventilate it through the passages and through the compartment 28. Unburned gases in the crank case are pulled into the carburetor in this manner. This effect is generally referred to as positive crank case ventilation. Note however, that it is accomplished without the need for tubes extending from the crank case as is common in automotive-type engines.
  • the manifold 30 is clamped to the cylinder block solely by the cylinder heads 13 and 14.
  • the head 14 is clamped by the cylinder head by bolts 36.
  • the edge portions 37 of the cylinder heads extend over the manifold 30 to hold it in place. Openings in the head align with open ings in the manifold.
  • a gasket 38 provides a seal around these openings.
  • first and second banks of cylinders is said block, said banks being upwardly and outwardly inclined
  • crank case at the lower portion of said .cylinder block
  • a centrally feeding manifold mounted in said compartment centrally of said cylinders and having an entrance in the top thereof
  • a downdraft carburetor mounted on top of said manifold and connected to the entrance of said intake manifold, said downdraft carburetor having a vertical passageway for flow of air through a top opening downwardly into said entrance of said intake manifold, said separately feeding manifold being separate from said cylinder block, said cylinder heads being secured to said cylinder block over annular extension and said cover for flow of air inwardly to and downwardly through said carburetor, said flow of air applying by eductive effect a negative pressure to said annular passageway which acts through said passage means to provide positive crank case ventilation.
  • a flame arrester positioned in said opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

In an internal-combustion marine engine positive crank case ventilation is provided by the eductive action of air entering a downdraft carburetor mounted in an enclosed compartment between the cylinders. The eductive effect acts through passages between the compartment and the crank case to ventilate the crank case through the passages, through the enclosed compartment and thence into the carburetor without requiring ventilating tubes extending from the crank case. A centrally feeding manifold is clamped to the cylinder block solely by the cylinder heads which are secured to the block over the edges of the manifold.

Description

United States Patent Cregan May 20, 1975 MARINE ENGINE Primary Examiner-Charles J. Myhre [75] Inventor. games I). Cregan, Baldwinsville, Assistant Examiner Tony Argenbright Attorney, Agent, or FirmWoodcock, Washburn, [73] Assignee: American Challenger Corporation, Kurtz & Mackiewicz Fulton, NY.
[22] Filed: Mar. 27, 1973 57 ABSTRACT 21 Appl. No.: 345,275
[52] U.S. C1..... 123/119 B; 123/52 MV; 123/55 VE [51] Int. Cl. F02m 25/06 [58] Field of Search 123/119 B, 52 MV, 55 R, 123/52 V, 55 VE, 55 VS, 55 VF [56] References Cited UNITED STATES PATENTS 2,966,146 12/1960 Schweitzer 123/55 R 3,233,598 2/1966 Van Ranst 123/41.74
FOREIGN PATENTS OR APPLICATIONS 654,312 6/1951 United Kingdom 123/55 R In an internal-combustion marine engine positive crank case ventilation is provided by the eductive action of air entering a downdraft carburetor mounted in an enclosed compartment between the cylinders. The eductive effect acts through passages between the compartment and the crank case to ventilate the crank case through the passages, through the enclosed compartment and thence into the carburetor without requiring ventilating tubes extending from the crank case. A centrally feeding manifold is clamped to the cylinder block solely by the cylinder heads which are secured to the block over the edges of the manifold.
2 Claims, 2 Drawing Figures 1 MARINE ENG INE BACKGROUND OF THE INVENTION This invention relates to an improved marine engine and more particularly to an improvement in engines of the type shown in U.S. Pat. No. 3,233,598 Van Ranst.
That patent describes a marine engine in which a cover forms a generally closed compartment between the V-type cylinder banks. An air horn in the compartment delivers air to the side entrance of a carburetor also mounted in the compartment. Air entering the air horn produces an eductive action which ventilates the crank case through passages between the compartment and the crank case.
SUMMARY OF THE INVENTION In accordance with this invention a downdraft carburetor increases the volumetric efficiency of an internalcombustion engine while providing positive crank case ventilation through a generally closed compartment connected by passages to the crank case. The cover which forms the generally closed compartment has an annular extension surrounding an opening in the cover. A flame arrester is mounted over this opening. An annular passageway is formed between the annular extension and a cover for the flame arrester. Carburetor air passing through this passageway produces an eductive effect which provides the positive crank case ventilation.
In accordance with another aspect of this invention the centrally feeding manifold is clamped to the cylinder block solely by the cylinder heads which are secured in place over the edges of the manifold.
Other objects, features and advantages of the invention will be better understood from the following more detailed description and accompanying claims.
DESCRIPTION OF THE DRAWINGS FIG. I is a cross sectional view taken in section of the engine; and
FIG. 2 is a side elevational view in cross section of the engine.
DESCRIPTION OF THE PREFERRED EMBODIMENT The engine includes a cylinder block 12, cylinder heads 13 and 14 and a crank case 15. Cylinder block 12 has six cylinders 16 arranged in pairs on opposite sides thereof, the cylinders extending upwardly and outwardly to form a V-type engine. The invention is also applicable to 2, 4 and 8 cylinder V-type engines' A crank case pan 17 extends below the crank case. Crank shaft 18 has piston rods 19 and 20 connected to the throws thereof. Cam shaft 21 is rotatably mounted above the crank shaft. Inlet valves 22 and exhaust valves 23 are connected by links and rocker arms to the cam shaft 21. Exhaust manifolds 24 are integrally formed within cylinder heads 13 and 14. A cover 25 is bolted'and secured by the seal 27 to the cylinder heads 13 and 14. The cover forms a central compartment 28 between the cylinder heads.
What has been described thus far is an engine of the type shown in the aforementioned Van Ranst patent and the description of that patent is incorporated herein by reference.
In accordance with this invention a downdraft carburetor 29 is mounted in the compartment. A centrally feeding manifold 30 has branches leading to the inlet valves 22. An entrance in the top of the intake manifold is connected to the downdraft carburetor 29.
The cover 25 has an annular extension 31 which surrounds an opening in the top of the cover 25. A flame arrester 32 is positioned in this opening and a domelike cover 33 is placed over the flame arrester. The downdraft carburetor feeds fuel and air directly into the manifold 30 which is beneath it. This increases the volumetric efficiency of the engine and results in an increase in the horsepower. A greater volume of air and fuel can be fed into the manifold in this manner.
A plurality of apertures 34 are part of passages between the compartment 28 and the crank case I5. Air which enters the compartment under cover 33 and over extension 31 to the carburetor 29 has an eductive ef feet. This effect applies a pressure to the crank case to ventilate it through the passages and through the compartment 28. Unburned gases in the crank case are pulled into the carburetor in this manner. This effect is generally referred to as positive crank case ventilation. Note however, that it is accomplished without the need for tubes extending from the crank case as is common in automotive-type engines.
As another important feature of this invention, the manifold 30 is clamped to the cylinder block solely by the cylinder heads 13 and 14. The head 14 is clamped by the cylinder head by bolts 36. The edge portions 37 of the cylinder heads extend over the manifold 30 to hold it in place. Openings in the head align with open ings in the manifold. A gasket 38 provides a seal around these openings. We have found that the manifold can be firmly secured in place in this manner and this obviates the need for separately securing the manifold to the engine block thereby facilitating production of the engine.
While a particular embodiment of the invention has been shown and described various modifications are within the true spirit and scope of the invention. The appended claims. are intended to cover all such modifications.
What is claimed is:
1. In an internal-combustion engine of the type in cluding:
a cylinder block,
first and second banks of cylinders is said block, said banks being upwardly and outwardly inclined,
a pair of cylinder heads secured to said block,
a cover extending across and sealed to said cylinder heads and cylinder block, whereby a compartment is formed between said cylinder heads by the cylinder heads, cylinder block, and cover,
a crank case at the lower portion of said .cylinder block, and
passage means between said compartment and said crank case, the improvement comprising:
a centrally feeding manifold mounted in said compartment centrally of said cylinders and having an entrance in the top thereof,
a downdraft carburetor mounted on top of said manifold and connected to the entrance of said intake manifold, said downdraft carburetor having a vertical passageway for flow of air through a top opening downwardly into said entrance of said intake manifold, said separately feeding manifold being separate from said cylinder block, said cylinder heads being secured to said cylinder block over annular extension and said cover for flow of air inwardly to and downwardly through said carburetor, said flow of air applying by eductive effect a negative pressure to said annular passageway which acts through said passage means to provide positive crank case ventilation.
2. The engine recited in claim 1 further comprising:
a flame arrester positioned in said opening.

Claims (2)

1. In an internal-combustion engine of the type including: a cylinder block, first and second banks of cylinders is said block, said banks being upwardly and outwardly inclined, a pair of cylinder heads secured to said block, a cover extending across and sealed to said cylinder heads and cylinder block, whereby a compartment is formed between said cylinder heads by the cylinder heads, cylinder block, and cover, a crank case at the lower portion of said cylinder block, and passage means between said compartment and said crank case, the improvement comprising: a centrally feeding manifold mounted in said compartment centrally of said cylinders and having an entrance in the top thereof, a downdraft carburetor mounted on top of said manifold and connected to the entrance of said intake manifold, said downdraft carburetor having a vertical passageway for flow of air through a top opening downwardly into said entrance of said intake manifold, said separately feeding manifold being separate from said cylinder block, said cylinder heads being secured to said cylinder block over said manifold to hold said separate manifold on said cylinder block solely by the clamping of said heads to said block, an annular extension surrounding an opening on said cover above said carburetor, said annular extension and said carburetor forming an annular passageway, and a cover for said carburetor positioned above said annular extension to provide an opening between said annular extension and said cover for flow of air inwardly to and downwardly through said carburetor, said flow of air applying by eductive effect a negative pressure to said annular passageway which acts through said passAge means to provide positive crank case ventilation.
2. The engine recited in claim 1 further comprising: a flame arrester positioned in said opening.
US345275A 1973-03-27 1973-03-27 Marine engine Expired - Lifetime US3884201A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US345275A US3884201A (en) 1973-03-27 1973-03-27 Marine engine
NL7404129A NL7404129A (en) 1973-03-27 1974-03-27
AU67231/74A AU6723174A (en) 1973-03-27 1974-03-27 Marine engine
DE2414863A DE2414863A1 (en) 1973-03-27 1974-03-27 MARINE ENGINE
FR7410504A FR2223562B3 (en) 1973-03-27 1974-03-27
JP49033596A JPS5025922A (en) 1973-03-27 1974-03-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US345275A US3884201A (en) 1973-03-27 1973-03-27 Marine engine

Publications (1)

Publication Number Publication Date
US3884201A true US3884201A (en) 1975-05-20

Family

ID=23354333

Family Applications (1)

Application Number Title Priority Date Filing Date
US345275A Expired - Lifetime US3884201A (en) 1973-03-27 1973-03-27 Marine engine

Country Status (6)

Country Link
US (1) US3884201A (en)
JP (1) JPS5025922A (en)
AU (1) AU6723174A (en)
DE (1) DE2414863A1 (en)
FR (1) FR2223562B3 (en)
NL (1) NL7404129A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080945A (en) * 1975-08-08 1978-03-28 Isuzu Motors Limited Structure of V type internal combustion engine
US4197899A (en) * 1976-12-22 1980-04-15 Ford Motor Company Method of casting a low weight reciprocating engine
US4329968A (en) * 1979-04-16 1982-05-18 Nissan Motor Co., Ltd. Oil separating system for blowby gas
US4840152A (en) * 1986-05-16 1989-06-20 Honda Giken Gokyo Kabushiki Kaisha V-type vertical engine
US5203296A (en) * 1992-04-09 1993-04-20 Barbron Corporation Flame arrester having helical flame arresting member
US5357913A (en) * 1992-04-10 1994-10-25 Sanshin Kogyo Kabushiki Kaisha Flame arrester arrangement for marine propulsion engine
US5375565A (en) * 1993-12-16 1994-12-27 Caterpillar Inc. Flame arrestor and method of manufacture
US5400750A (en) * 1993-08-09 1995-03-28 Brunswick Corporation Manifold and plenum construction for an electronic fuel injected engine
US5479903A (en) * 1993-08-04 1996-01-02 Mercedes-Benz Ag V-shaped internal combustion engine
US5709187A (en) * 1996-04-30 1998-01-20 Brunswick Corporation Flame arrestor
US6647944B2 (en) * 2001-04-17 2003-11-18 Suzuki Motor Corporation Cylinder block structure
US6708679B1 (en) 2002-12-06 2004-03-23 Mike Pinsker Polution control kit
US20070105465A1 (en) * 2000-02-29 2007-05-10 Brp-Rotax Gmbh & Co. Kg Watercraft Having a Four Stroke Engine with a Supercharger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8600191L (en) * 1985-01-18 1986-07-19 Honda Motor Co Ltd FORBRENNINGSMOTOR
FR2664654B1 (en) * 1990-07-11 1992-11-06 Peugeot ENGINE CYLINDER CRANKCASE WITH CRANKCASE GAS AND OIL RECYCLING CIRCUIT.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966146A (en) * 1957-10-29 1960-12-27 Schweitzer And Hussmann Air-cooled, port-scavenged engine
US3233598A (en) * 1964-10-28 1966-02-08 Cornelius W Van Ranst Marine engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966146A (en) * 1957-10-29 1960-12-27 Schweitzer And Hussmann Air-cooled, port-scavenged engine
US3233598A (en) * 1964-10-28 1966-02-08 Cornelius W Van Ranst Marine engine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080945A (en) * 1975-08-08 1978-03-28 Isuzu Motors Limited Structure of V type internal combustion engine
US4197899A (en) * 1976-12-22 1980-04-15 Ford Motor Company Method of casting a low weight reciprocating engine
US4329968A (en) * 1979-04-16 1982-05-18 Nissan Motor Co., Ltd. Oil separating system for blowby gas
US4840152A (en) * 1986-05-16 1989-06-20 Honda Giken Gokyo Kabushiki Kaisha V-type vertical engine
US5203296A (en) * 1992-04-09 1993-04-20 Barbron Corporation Flame arrester having helical flame arresting member
US5357913A (en) * 1992-04-10 1994-10-25 Sanshin Kogyo Kabushiki Kaisha Flame arrester arrangement for marine propulsion engine
US5479903A (en) * 1993-08-04 1996-01-02 Mercedes-Benz Ag V-shaped internal combustion engine
US5400750A (en) * 1993-08-09 1995-03-28 Brunswick Corporation Manifold and plenum construction for an electronic fuel injected engine
US5375565A (en) * 1993-12-16 1994-12-27 Caterpillar Inc. Flame arrestor and method of manufacture
US5709187A (en) * 1996-04-30 1998-01-20 Brunswick Corporation Flame arrestor
US20070105465A1 (en) * 2000-02-29 2007-05-10 Brp-Rotax Gmbh & Co. Kg Watercraft Having a Four Stroke Engine with a Supercharger
US6647944B2 (en) * 2001-04-17 2003-11-18 Suzuki Motor Corporation Cylinder block structure
US6708679B1 (en) 2002-12-06 2004-03-23 Mike Pinsker Polution control kit

Also Published As

Publication number Publication date
DE2414863A1 (en) 1974-10-10
JPS5025922A (en) 1975-03-18
FR2223562B3 (en) 1976-04-16
FR2223562A1 (en) 1974-10-25
NL7404129A (en) 1974-10-01
AU6723174A (en) 1975-10-02

Similar Documents

Publication Publication Date Title
US3884201A (en) Marine engine
US3810454A (en) Pollution free fuel inlet system for internal combustion engines
US4867109A (en) Intake passage arrangement for internal combustion engines
US3107659A (en) Two-cycle internal combustion engine
JPH03179152A (en) Intake system for two-cycle multicylinder engine
JP3271502B2 (en) V-type 4-cycle engine for outboard motor
US4519363A (en) Intake system for an internal combustion engine provided with several intake valves
CA1069400A (en) Engine manifold with air gap insulator carburetor mounting
JPS62197623A (en) Cooling device for air-cooled multi-cylinder type internal combustion engine
EP0154144A3 (en) Air-cooled internal-combustion piston engine
JPS58119923A (en) Suction device for two-cycle-engine
US5361731A (en) Scavenging port delivery for two stroke engine
JP2515979B2 (en) V-type vertical engine
JP3680965B2 (en) Intake pipe of internal combustion engine with carburetor
JPS6321686Y2 (en)
JP3747803B2 (en) Outboard motor with 4-cycle V-type engine
US2667151A (en) Exhaust manifold for internalcombustion engines
FR2441064A1 (en) TURBOCHARGER INTERNAL COMBUSTION ENGINE
JP2593057B2 (en) Outboard motor
US1883781A (en) Multicylinder two-stroke internal-combustion engine
JP2535339Y2 (en) Secondary air introduction device for engine
DE3010285A1 (en) Economical multicylinder IC engine - has magnetic relief valve for operating on reduced number of cylinders
JPH0281919A (en) Head cooling system for multicylinder air-cooled engine
US3015324A (en) Conversion internal combustion engine for use as a marine engine
JPS6187914A (en) <=ylinder head cooling device for internal-combustion engine

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMERICAN CHALLENGER CORPORATION, INC., AUBURN, N.Y

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNAL MARINE COMBUSTION, INC.;REEL/FRAME:003827/0706

Effective date: 19810202