WO2003060291A2 - Two-stroke internal combustion engine with circularly arranged pistons and cylinders - Google Patents

Two-stroke internal combustion engine with circularly arranged pistons and cylinders Download PDF

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Publication number
WO2003060291A2
WO2003060291A2 PCT/HR2002/000021 HR0200021W WO03060291A2 WO 2003060291 A2 WO2003060291 A2 WO 2003060291A2 HR 0200021 W HR0200021 W HR 0200021W WO 03060291 A2 WO03060291 A2 WO 03060291A2
Authority
WO
WIPO (PCT)
Prior art keywords
pistons
cylinder
piston
internal combustion
combustion engine
Prior art date
Application number
PCT/HR2002/000021
Other languages
French (fr)
Other versions
WO2003060291A3 (en
Inventor
Branko Grahovac
Original Assignee
Branko Grahovac
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 Branko Grahovac filed Critical Branko Grahovac
Priority to AU2002246269A priority Critical patent/AU2002246269A1/en
Publication of WO2003060291A2 publication Critical patent/WO2003060291A2/en
Publication of WO2003060291A3 publication Critical patent/WO2003060291A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C9/00—Oscillating-piston machines or engines
    • F01C9/002—Oscillating-piston machines or engines the piston oscillating around a fixed axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F01C1/063—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
    • F01C1/07—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them having crankshaft-and-connecting-rod type drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F01C1/063—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
    • F01C1/077—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them having toothed-gearing type drive
    • 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
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines

Definitions

  • the invention referred to falls under the field of piston engines with internal combustion. According to the International Patent Classification it is classified as per classification symbol F 02 B 1/04 that defines the engines with compression with fuel and air mixture supply into the cylinder. However, as this is the engine with gear drive, this invention may also be classified under the secondary classification symbol F 01 C 1/077 which defines the gear driven machines and engines with rotating piston.
  • the two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area represents the new. operation mode of the internal combustion engine. It consists of the housing shaped like an empty cylinder. Along its internal flange the housing has four identical cylinders positioned at equal distances from each other. All cylinders have one common axis. Two pistons go into each cylinder, one on each side. In pairs of two the pistons (piston of one and piston of the other cylinder) are connected to one arm of the radial piston rod in the already known manner of connecting. The pistons of the other two cylinders are connected to the other arm of the radial piston rod. Thus all pistons are interconnected from the two radial piston rods.
  • each radial piston rod is connected onto the axial diametrical engine bars which are circularly positioned into the shaft in the housing. Via bars each radial piston rod is connected to its own gear which engages the main gear situated on the shaft which is positioned in the axis of the housing i.e. engine.
  • Each cylinder has the suction and exhaust channel.
  • the mixture of fuel and air enters the cylinder via the suction channel.
  • the combustible mixture gasoline fumes and air
  • an electrical spark ignites the combustible mixture which due to the pressure pushes the pistons towards the other end position.
  • the pistons transform the radial motion into the circular motion via the piston rod and the bar and thus move the gears, and these in turn the shaft, which is the main advantage of the invention.
  • Another advantage of the invention is a higher coefficient of the effective engine operation, simpler engine structure with regard to the new operation mode, and smaller diameter of pistons of the same power as the recognised engines, it operates with less noise, and is smaller in size and weight.
  • the two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area consists of the housing 1 with four identical cylinders 1.1 positioned at equal distances from each other and having the same centre.
  • Each cylinder 1.1 has the suction channel 1.2 and the exhaust channel 1.3.
  • Each cylinder 1.1 has pistons 2 and 3 on each side and these are connected to the radial piston rod 4 in a known manner.
  • the piston rod 4 is connected to the bar 5 which is circularly positioned on the shaft 9.
  • Firmly positioned on the shaft 9 is the gear 8, which engages with the gears 7.
  • the gears 7 and the connecting rod 6 are connected with the bar 5 (figure 1)-
  • the two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area operates as follows: beginning of suction (figure 2) - the piston 3 opens the suction channel 1.2.
  • the combustible mixture of air and gasoline fumes has a certain suprapressure and follows the motion inertia of the burnt gases and fills the cylinder 1.1; beginning of compression (figure 3) - the pistons 3 and 2 move one toward the other closing the suction channel 1.2 and the exhaust channel 1.3 compressing the combustible mixture; explosion (figure 4) - shortly prior to the arrival of pistons 2 and 3 at the end position there comes to the ignition of the combustible mixture via electrical spark produced at the spark-plug electrodes 11.
  • the ignition takes place shortly before the arrival of pistons 2 and 3 at the end position because the speed of the flame is not infinitely high for the process to immediately include the whole mass.
  • the pressure in cylinder 1.1 rises and sets the cylinders 2 and 3 apart; beginning of exhaust (figure 5) - the piston 2 opens the exhaust channel 1.3.
  • the burnt gases assume the motion inertia through the exhaust channel 1.3 and leave the cylinder 1.1.
  • the pistons 2 and 3 in the cylinder 1.1 move symmetrically one toward the other while at the same time the remaining two pairs draw away from each other.
  • the pistons 2 and 3 conveys the radial motion onto the radial piston rod 4 and this one conveys it onto the bar 5.
  • the bar 5 via the connecting rod 6 onto the gear 7 turning the straight-line motion into the circular.
  • the gear 7 conveys the circular motion onto the gear 8 and this one onto the shaft 9.
  • a characteristic feature is the horizontal position of the engine. Due to small size, small weight, noiseless operation and horizontal engine position, the engine may be used as the driving engine of: scooters - installation under the feet; passenger vehicles - installation under the seat; vessels and helicopters - installation under the floor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area represents the new operation mode of the internal combustion engine. The pistons (2 and 3) are positioned at each side of cylinders (1.1) in the housing (1). The combustible mixture of gasoline fumes and air enters the cylinder (1.1) through the suction channel (1.2). Through the movement of pistons (2 and 3) one toward the other, the piston (3) closes the suction channel (1.2). The pistons (2 and 3) compress the combustible mixture that gets ignited by the electrical spark resulting in the explosion that sets the pistons (2 and 3) apart and these transform the radial motion into circular via the radial piston rod (4), the bar (5), the connecting rod (6), the gears (7 and 8) and convey it onto the shaft (9). By setting the pistons (2 and 3) apart, the piston (2) opens the exhaust channel (1.3) letting the burnt gases out while a little bit later the piston (3) opens the suction channel (1.2) letting the combustible mixture into the cylinder (1.1).

Description

TWO-STROKE INTERNAL COMBUSTION ENGINE WITH CIRCULARLY ARRANGED CYLINDERS AND PISTONS WITH CIRCULATING ONE-WAY CHARGE AND DISCHARGE
OF THE CYLINDER AREA
Technical field of the invention
The invention referred to falls under the field of piston engines with internal combustion. According to the International Patent Classification it is classified as per classification symbol F 02 B 1/04 that defines the engines with compression with fuel and air mixture supply into the cylinder. However, as this is the engine with gear drive, this invention may also be classified under the secondary classification symbol F 01 C 1/077 which defines the gear driven machines and engines with rotating piston.
Technical problem
The endeavours of the contemporary industry and the market demands are directed at making such internal combustion engine which would have a higher level of efficiency, simpler structure, smaller size and weight, with equal or higher power and smaller fuel consumption. In order to accomplish this it is necessary to find the new operating mode of the internal combustion engine, representing a technical problem that is solved with the proposed two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area.
Description of the conventional engines
The recognised patents of the internal combustion engines nos. GB 630 461 A, US 5 147 191 A, US 3 822 971 A, US 4 744 736 A, US 3 685 928 A and GB 2 074 652 A differ from the filed invention i.e. from the new operation mode of the internal combustion engine contained herewith. The disadvantages of other recognised internal combustion engines that are being used are: they have a small coefficient of the efficient engine operation, the engine structure is rather complex, the engine is heavy and takes up a lot of space. These would be the main disadvantages of the known solutions with regard to the internal combustion engines. The aim of the solution is to make such internal combustion engine with the new operation mode which would have a higher coefficient of the effective engine operation, simpler structure, smaller size and weight and consequently smaller fuel consumption. Description of the new design
The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area represents the new. operation mode of the internal combustion engine. It consists of the housing shaped like an empty cylinder. Along its internal flange the housing has four identical cylinders positioned at equal distances from each other. All cylinders have one common axis. Two pistons go into each cylinder, one on each side. In pairs of two the pistons (piston of one and piston of the other cylinder) are connected to one arm of the radial piston rod in the already known manner of connecting. The pistons of the other two cylinders are connected to the other arm of the radial piston rod. Thus all pistons are interconnected from the two radial piston rods. The radial piston rods are connected onto the axial diametrical engine bars which are circularly positioned into the shaft in the housing. Via bars each radial piston rod is connected to its own gear which engages the main gear situated on the shaft which is positioned in the axis of the housing i.e. engine. Each cylinder has the suction and exhaust channel.
The mixture of fuel and air enters the cylinder via the suction channel. Through the motion of pistons one toward the other the combustible mixture (gasoline fumes and air) is compressed until the arrival at end position. At this moment an electrical spark ignites the combustible mixture which due to the pressure pushes the pistons towards the other end position. The pistons transform the radial motion into the circular motion via the piston rod and the bar and thus move the gears, and these in turn the shaft, which is the main advantage of the invention. Another advantage of the invention is a higher coefficient of the effective engine operation, simpler engine structure with regard to the new operation mode, and smaller diameter of pistons of the same power as the recognised engines, it operates with less noise, and is smaller in size and weight.
Background art
The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area is shown as follows: Figure 1 Diagrammatic drawing of the engine
Figure 2 Position of pistons in the cylinder at the beginning of suction Figure 3 Beginning of compression
Figure 4 Position of pistons in the cylinder at the ignition of combustible mixture - explosion Figure 5 Position of pistons in the cylinder at the beginning of exhaust. Disclosure of the invention
The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area consists of the housing 1 with four identical cylinders 1.1 positioned at equal distances from each other and having the same centre. Each cylinder 1.1 has the suction channel 1.2 and the exhaust channel 1.3. Each cylinder 1.1 has pistons 2 and 3 on each side and these are connected to the radial piston rod 4 in a known manner. The piston rod 4 is connected to the bar 5 which is circularly positioned on the shaft 9. Firmly positioned on the shaft 9 is the gear 8, which engages with the gears 7. The gears 7 and the connecting rod 6 are connected with the bar 5 (figure 1)-
The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area operates as follows: beginning of suction (figure 2) - the piston 3 opens the suction channel 1.2. The combustible mixture of air and gasoline fumes has a certain suprapressure and follows the motion inertia of the burnt gases and fills the cylinder 1.1; beginning of compression (figure 3) - the pistons 3 and 2 move one toward the other closing the suction channel 1.2 and the exhaust channel 1.3 compressing the combustible mixture; explosion (figure 4) - shortly prior to the arrival of pistons 2 and 3 at the end position there comes to the ignition of the combustible mixture via electrical spark produced at the spark-plug electrodes 11. The ignition takes place shortly before the arrival of pistons 2 and 3 at the end position because the speed of the flame is not infinitely high for the process to immediately include the whole mass. The pressure in cylinder 1.1 rises and sets the cylinders 2 and 3 apart; beginning of exhaust (figure 5) - the piston 2 opens the exhaust channel 1.3. The burnt gases assume the motion inertia through the exhaust channel 1.3 and leave the cylinder 1.1.
The pistons 2 and 3 in the cylinder 1.1 move symmetrically one toward the other while at the same time the remaining two pairs draw away from each other.
The pistons 2 and 3 conveys the radial motion onto the radial piston rod 4 and this one conveys it onto the bar 5. The bar 5 via the connecting rod 6 onto the gear 7 turning the straight-line motion into the circular. The gear 7 conveys the circular motion onto the gear 8 and this one onto the shaft 9.
A characteristic feature is the horizontal position of the engine. Due to small size, small weight, noiseless operation and horizontal engine position, the engine may be used as the driving engine of: scooters - installation under the feet; passenger vehicles - installation under the seat; vessels and helicopters - installation under the floor.

Claims

C L A I M S
1. The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area is characterised by the following operation mode: the pistons (2) and (3) move within the cylinder (1.1) of the housing (1) toward the end position drawing away from each other, while the piston (3) opens the suction channel (1.2) through which the combustible mixture of air and gasoline fumes enters the cylinder (1.1) until the piston (3) closes the suction channel (1.2) moving toward the other end position together with the piston (2) drawing one toward the other compressing the combustible mixture which gets ignited by the electrical spark of the spark-plug electrode (11) and there comes to the ignition of the combustible mixture and explosion which pushes the pistons (2) and (3) toward the end positions setting them apart from each other where the piston (2) opens the exhaust channel (1.3) through which the burnt gases leave the cylinder (1.1) while the piston (3) slightly later opens the suction channel (1.2) through which the combustible mixture starts to enter the cylinder (1.1).
2. The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area according to the claim 1, is characterised by the fact that the pistons (2) and (3) convey the radial motion onto the radial piston rod (4) and the radial piston rod (4) via the bar (5) and the connecting rod (6) onto the gears (7) which move the gear (8) while the gear (8) moves the shaft (9).
3. The two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area according to the claim 1 is characterised by the fact that the engine must maintain the horizontal position.
PCT/HR2002/000021 2002-01-15 2002-03-28 Two-stroke internal combustion engine with circularly arranged pistons and cylinders WO2003060291A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002246269A AU2002246269A1 (en) 2002-01-15 2002-03-28 Two-stroke internal combustion engine with circularly arranged pistons and cylinders

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HRP20020041A 2002-01-15
HRP20020041 HRP20020041A2 (en) 2002-01-15 2002-01-15 Two-stroke internal combustion engine with circularly arranged cylinders and pistons with circulating one-way charge and discharge of the cylinder area

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WO2003060291A2 true WO2003060291A2 (en) 2003-07-24
WO2003060291A3 WO2003060291A3 (en) 2003-10-09

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HR (1) HRP20020041A2 (en)
WO (1) WO2003060291A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949052A (en) * 2017-03-31 2017-07-14 上乘精密科技（苏州）有限公司 A kind of circumference puts piston component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE292633C (en) * 1914-04-08 1916-06-20
US2349848A (en) * 1942-12-08 1944-05-30 Davids Robert Brewster Relative motion rotative mechanism
FR1026087A (en) * 1950-10-18 1953-04-23 Improvement in thermal engines and more particularly those known as: explosion or internal combustion
AU455824B2 (en) * 1971-02-16 1974-11-18 Cano, Sera Fin Oscillating internal combustion engine
EP0040549A1 (en) * 1980-05-21 1981-11-25 Arlo D. Palmer Engine
WO2001023712A1 (en) * 1999-09-28 2001-04-05 Branko Grahovac Internal combustion engine with circularly arranged cylinders and pistons

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE292633C (en) * 1914-04-08 1916-06-20
US2349848A (en) * 1942-12-08 1944-05-30 Davids Robert Brewster Relative motion rotative mechanism
FR1026087A (en) * 1950-10-18 1953-04-23 Improvement in thermal engines and more particularly those known as: explosion or internal combustion
AU455824B2 (en) * 1971-02-16 1974-11-18 Cano, Sera Fin Oscillating internal combustion engine
EP0040549A1 (en) * 1980-05-21 1981-11-25 Arlo D. Palmer Engine
WO2001023712A1 (en) * 1999-09-28 2001-04-05 Branko Grahovac Internal combustion engine with circularly arranged cylinders and pistons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949052A (en) * 2017-03-31 2017-07-14 上乘精密科技（苏州）有限公司 A kind of circumference puts piston component

Also Published As

Publication number Publication date
HRP20020041A2 (en) 2003-10-31
WO2003060291A3 (en) 2003-10-09
AU2002246269A1 (en) 2003-07-30
AU2002246269A8 (en) 2003-07-30

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