US2493974A - Two-cycle internal-combustion engine - Google Patents

Two-cycle internal-combustion engine Download PDF

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Publication number
US2493974A
US2493974A US697104A US69710446A US2493974A US 2493974 A US2493974 A US 2493974A US 697104 A US697104 A US 697104A US 69710446 A US69710446 A US 69710446A US 2493974 A US2493974 A US 2493974A
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cover
combustion engine
cycle internal
cylinder
carburettor
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Expired - Lifetime
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US697104A
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Jozif Josef
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    • 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
    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles

Definitions

  • the present invention relates to a two cycle engine wherein the suction port is opened and closed by the engine piston and wherein the division plane between the cylinder and crankshaft casing is provided above the opening of the suction port into the cylinder, the suction port being provided in the crankshaft casing and the carburettor being equally fixed to the crankshaft casing and not the cylinder as is the case in other hitherto familiar arrangements of two cycle engines of this kind.
  • a suitable depression is provided in the crankshaft casing casting, said depression forming, together with a particular cover, a housing wherein the carburettor is totally enclosed save the inlet tube respectively the frontal suction wall or the air filter forming one of the walls of said carburettor housing.
  • the main feature of the above described a1- rangement consists in that for the purpose of dismantling the cylinder it will not be necessary to remove the carburettor and the gasoline inlet tube.
  • a further feature consists in that the carburettor is totally enclosed and thus protected against the intrusion of rainwater, dust, etc.
  • Fig. 1 shows a longitudinal section through the engine
  • Fig. 2 shows a cross section of the engine on the line a-a in Fig. 1.
  • l is the engine cylinder, 2 the cylinder opening for the suction port 3 being alternately closed and opened by the control edge of the piston 4.
  • the engine cylinder l is assembled with the crankshaft respectively block casing 5 in such manner that the division plane 6 between the engine cylinder l and the casing 5 is positioned above the suction opening 2. Therefore, the suction port is provided within the crankshaft casing and preferably curved in such manner as to extend downwards from its opening into the cylinder. Due to this arrangement it is possible to locate the carburettor 1 fixed by its flange 8 to the crankshaft casing 5 in a comparatively very low position so as to enable its lower portion to be accommodated in the chamber 9 cast out in the crankshaft casing 5.
  • the housing cover It comprises either a plate cover l2 with rubber lining or a rubber cover held in position within the cover ill by resilience.
  • the float control spindle is adjusted by the button shown in the drawing as protruding out of the cover so that the float can be controlled without it being necessary to remove the cover.
  • the cover it is connected to the crankshaft casing 5 by several latches provided at the end of flat springs ll so that the cover ll] may be removed without the use of any tool whatsoever.
  • a two cycle internal combustion engine including a crankshaft casing integrally formed with a cylindrical portion constituting a part of the working cylinder and provided in its wall with an opening which is in communication with one end of a suction port formed in said cylindrical portion of said crankshaft casin of the engine, a cylinder attached to said cylindrical portion in axial alignment therewith and constituting the remaining part of the working cylinder, a chamber formed adjacent said suction port by a depression in the crankshaft casing, a cover for said chamber, means for removably attaching said cover to said crankshaft casing, a curburetor with an air filter mounted in said chamber, and means connecting the outlet of said carburetor directly with the other end of said suction port, said air filter having its inlet arranged in a wall of said chamber.

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

Description

Jan. 10, 1950 J. JoziF TWO-CYCLE INTERNAL-COMBUSTION ENGINE Filed Sept. 14, 1946 FIG/f Patented Jan, 10, 1950 CFFICE TWO CYCLE INTERNAL- COMBUSTION ENGINE Josef Jozif, Prague, Czechoslovakia Application September 14,
In Germany December 24, 1943 3 Claims.
The present invention relates to a two cycle engine wherein the suction port is opened and closed by the engine piston and wherein the division plane between the cylinder and crankshaft casing is provided above the opening of the suction port into the cylinder, the suction port being provided in the crankshaft casing and the carburettor being equally fixed to the crankshaft casing and not the cylinder as is the case in other hitherto familiar arrangements of two cycle engines of this kind.
For the carburettor a suitable depression is provided in the crankshaft casing casting, said depression forming, together with a particular cover, a housing wherein the carburettor is totally enclosed save the inlet tube respectively the frontal suction wall or the air filter forming one of the walls of said carburettor housing.
The main feature of the above described a1- rangement consists in that for the purpose of dismantling the cylinder it will not be necessary to remove the carburettor and the gasoline inlet tube. A further feature consists in that the carburettor is totally enclosed and thus protected against the intrusion of rainwater, dust, etc.
An embodiment of the object of the present invention will be described hereinafter, by way of example merely, with reference to the accompanying drawing, wherein Fig. 1 shows a longitudinal section through the engine,
Fig. 2 shows a cross section of the engine on the line a-a in Fig. 1.
Referring now to the drawings, l is the engine cylinder, 2 the cylinder opening for the suction port 3 being alternately closed and opened by the control edge of the piston 4. The engine cylinder l is assembled with the crankshaft respectively block casing 5 in such manner that the division plane 6 between the engine cylinder l and the casing 5 is positioned above the suction opening 2. Therefore, the suction port is provided within the crankshaft casing and preferably curved in such manner as to extend downwards from its opening into the cylinder. Due to this arrangement it is possible to locate the carburettor 1 fixed by its flange 8 to the crankshaft casing 5 in a comparatively very low position so as to enable its lower portion to be accommodated in the chamber 9 cast out in the crankshaft casing 5. By the cover In held in position by means of flat springs H or by another spring latch, the entire carburettor is enclosed up to the front suction wall of the air filter l3 the latter forming thus one wall of the carburettor casing. To enable the Bowden wire for controlling the carburettor to be adjusted without thenecessity of removing the cover In 1946, Serial No. 697,104
therefor, the housing cover It comprises either a plate cover l2 with rubber lining or a rubber cover held in position within the cover ill by resilience. The float control spindle is adjusted by the button shown in the drawing as protruding out of the cover so that the float can be controlled without it being necessary to remove the cover.
As already mentioned, the cover it is connected to the crankshaft casing 5 by several latches provided at the end of flat springs ll so that the cover ll] may be removed without the use of any tool whatsoever.
I claim:
1. A two cycle internal combustion engine including a crankshaft casing integrally formed with a cylindrical portion constituting a part of the working cylinder and provided in its wall with an opening which is in communication with one end of a suction port formed in said cylindrical portion of said crankshaft casin of the engine, a cylinder attached to said cylindrical portion in axial alignment therewith and constituting the remaining part of the working cylinder, a chamber formed adjacent said suction port by a depression in the crankshaft casing, a cover for said chamber, means for removably attaching said cover to said crankshaft casing, a curburetor with an air filter mounted in said chamber, and means connecting the outlet of said carburetor directly with the other end of said suction port, said air filter having its inlet arranged in a wall of said chamber.
2. A two cycle internal combustion engine as claimed in claim 1, including a plurality of fiat springs provided with latches for attachin the cover for said chamber quickly removably to the crankshaft casing.
3. A two cycle internal combustion engine as claimed in claim 1, including Bowden wire means for controlling the operation of said carburetor, and a removable second cover for normally closing an aperture in said first named cover, said aperture when uncovered permitting access and adjustment of said Bowden wire means without removal of said first named cover.
JOSEF JOZIF.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,443,517 Acre Jan. 30, 1923 2,069,315 Irgens Feb. 2, 1937 2,179,683 Brebeck Nov. 14, 1939 2,397,457 Krenzke Mar. 26, 1946
US697104A 1943-12-24 1946-09-14 Two-cycle internal-combustion engine Expired - Lifetime US2493974A (en)

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DE2493974X 1943-12-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109416A (en) * 1960-05-09 1963-11-05 Chrysler Corp Multicylinder inline overhead valve engine
US3252452A (en) * 1962-11-08 1966-05-24 Mcculloch Corp Balanced piston engine
US4354461A (en) * 1980-08-04 1982-10-19 Outboard Marine Corporation Two-cycle internal combustion engine including horizontal crankshaft
US4811705A (en) * 1987-01-22 1989-03-14 Kawasaki Jukogyo Kabushiki Kaisha Horizontal-shaft OHV engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1443517A (en) * 1920-03-04 1923-01-30 Universal Engineering Company Internal-combustion engine
US2069315A (en) * 1935-04-05 1937-02-02 Outboard Motors Corp Internal combustion engine
US2179683A (en) * 1938-04-18 1939-11-14 Brebeck Charles Internal combustion engine
US2397457A (en) * 1943-01-04 1946-03-26 Jacobsen Mfg Co Motor fuel power induction device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1443517A (en) * 1920-03-04 1923-01-30 Universal Engineering Company Internal-combustion engine
US2069315A (en) * 1935-04-05 1937-02-02 Outboard Motors Corp Internal combustion engine
US2179683A (en) * 1938-04-18 1939-11-14 Brebeck Charles Internal combustion engine
US2397457A (en) * 1943-01-04 1946-03-26 Jacobsen Mfg Co Motor fuel power induction device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109416A (en) * 1960-05-09 1963-11-05 Chrysler Corp Multicylinder inline overhead valve engine
US3252452A (en) * 1962-11-08 1966-05-24 Mcculloch Corp Balanced piston engine
US4354461A (en) * 1980-08-04 1982-10-19 Outboard Marine Corporation Two-cycle internal combustion engine including horizontal crankshaft
US4811705A (en) * 1987-01-22 1989-03-14 Kawasaki Jukogyo Kabushiki Kaisha Horizontal-shaft OHV engine

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