WO2003021095A1 - Twin piston engine - Google Patents
Twin piston engine Download PDFInfo
- Publication number
- WO2003021095A1 WO2003021095A1 PCT/IB2001/001611 IB0101611W WO03021095A1 WO 2003021095 A1 WO2003021095 A1 WO 2003021095A1 IB 0101611 W IB0101611 W IB 0101611W WO 03021095 A1 WO03021095 A1 WO 03021095A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- twin
- engine
- crankshaft
- pistons
- Prior art date
Links
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
- F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
Definitions
- the invention relates to internal combustion engines and more particularly it presents a twin piston engine with two opposite pistons in the same cylinder.
- a cylinder 10 opened at both ends.
- the pistons 21 and 22 move in opposite directions between a first position where they are spaced apart and a second position where they are proximate to each other.
- the connecting rod 31 of the bottom piston 21 is in line; the connecting rods 32 of the top piston 22 are set off to the side and the three of them are connected to their respective places in the crankshaft 40.
- the two connecting rods 32 of the top piston are permanently connected with each other through the connecting branch 33 and this branch is pivotally attached to the piston through the modified rod 34.
- the modified rod 34 is connected to the piston through the pin 35, which is 90 degree rotated in respect to the bottom pin 36. This is done in order to force the modified rod 34 to move only in vertical direction by embodying it with the top piston.
- Fig 1 is a schematic perspective view of the mechanism presented by this invention.
- Fig 2 shows how this mechanism can be implemented in a two-stroke engine.
- Fig 3 shows how this mechanism can be implemented in a four-stroke engine.
- Fig 4 is an upper view of the engine where are used two twin-piston cylinders.
Landscapes
- 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)
Abstract
This invention presents a twin piston engine comprising a cylinder opened at both ends and two pistons that move in opposite directions. The bottom piston is connected to a three-throw crankshaft through an inline rod.The top piston is connected through a modified rod to the connecting branch of the two side rods and through these rods to the crankshaft.
Description
TITLE OF INVENTION
TWIN PISTON ENGINE
Technical Field The invention relates to internal combustion engines and more particularly it presents a twin piston engine with two opposite pistons in the same cylinder.
Background of invention
Many changes are made to the engine since it was created. There have been created many types with different abilities. This invention relates to twin piston engines. In prior art we see for example in the patent GB 208,670 published in March 1923 a twin piston engine where one's piston rod passes through the other piston creating extra friction among the moving parts. There are also some other patents related to twin piston engines such as WO 99/878 or US 6,182,619 Bl published respectively in April 1999 and February 2001. These patents describe twin piston engines but the rods of different pistons pass their rotating movement to two crankshaft. In respect to these or other earlier patents this invention presents a twin piston engine where are eliminated the extra friction forces present in the 1923' s patent and passes the rotating movement of both piston rods on one crankshaft.
Disclosure of invention
This invention presents a new design for the twin piston engines with internal combustion. The invention generally comprises a cylinder opened at ends, two pistons, three piston rods with their connecting rods and a three-throw crankshaft. The pistons move in opposite directions between a first position where they are spaced apart and a second position where they are proximate to each other.
This engine comprises:
1. A cylinder 10 opened at both ends.
2. Two opposite moving pistons 21 and 22.
3. Three piston rods with their connecting rods. 4. A three-throw crankshaft 40
The pistons 21 and 22 move in opposite directions between a first position where they are spaced apart and a second position where they are proximate to each other. The connecting rod 31 of the bottom piston 21 is in line; the connecting rods 32 of the top piston 22 are set off to the side and the three of them are connected to their respective places in the crankshaft 40. The two connecting rods 32 of the top piston are permanently connected with each other through the connecting branch 33 and this branch is pivotally attached to the piston through the modified rod 34. The modified rod 34 is connected to the piston through the pin 35, which is 90 degree rotated in respect to the bottom pin 36. This is done in order to force the modified rod 34 to move only in vertical direction by embodying it with the top piston.
In fig 3 are shown among the others the inlet 51 and exhaust outlet 52 with their respective valves. In fig 4 is shown also the sparking plug 60.
Brief description of the drawings
Fig 1 is a schematic perspective view of the mechanism presented by this invention.
Fig 2 shows how this mechanism can be implemented in a two-stroke engine. Fig 3 shows how this mechanism can be implemented in a four-stroke engine. Fig 4 is an upper view of the engine where are used two twin-piston cylinders.
Claims
1. A twin piston engine comprising a cylinder and two pistons, which move in opposite directions.
2. Two long rods that connect the top piston with the crankshaft.
3. The two long rods as in claim 2 where the two of them are fixed with the connecting branch.
4. The connecting branch that is pivotally attached in its mid point to the modified rod that connects the connecting branch to the piston's pin.
5. The top piston's pin is 90 degree rotated in respect to the bottom piston's pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2001/001611 WO2003021095A1 (en) | 2001-09-04 | 2001-09-04 | Twin piston engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2001/001611 WO2003021095A1 (en) | 2001-09-04 | 2001-09-04 | Twin piston engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003021095A1 true WO2003021095A1 (en) | 2003-03-13 |
Family
ID=11004164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2001/001611 WO2003021095A1 (en) | 2001-09-04 | 2001-09-04 | Twin piston engine |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2003021095A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2491155A (en) * | 2011-05-24 | 2012-11-28 | Cox Powertrain Ltd | Opposed piston combustion engine having fuel injector disposed at least partly within an engine cylinder |
| CN102797562A (en) * | 2011-07-11 | 2012-11-28 | 摩尔动力(北京)技术股份有限公司 | Air cylinder piston mechanism with multiple pistons sharing one axis |
| CN102979617A (en) * | 2011-11-16 | 2013-03-20 | 摩尔动力(北京)技术股份有限公司 | Double top opposed piston engine |
| CN109736947A (en) * | 2019-03-18 | 2019-05-10 | 张家港川梭车业有限公司 | A kind of Dual-piston IC engine |
| CN110374742A (en) * | 2019-08-01 | 2019-10-25 | 安徽天沃重工机械有限公司 | A kind of engineering machinery limiting body height and the multi-cylinder diesel engine for increasing stroke |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112405C (en) * | 1899-01-07 | |||
| GB208670A (en) | 1923-03-09 | 1923-12-27 | Peter Hill | Twin piston engine |
| DE602660C (en) * | 1931-01-29 | 1934-09-13 | William Doxford & Sons Ltd | Machine with counter-rotating pistons acting on a crankshaft, in which the crosshead is connected to the upper piston by a pivot pin |
| US2120666A (en) * | 1937-02-03 | 1938-06-14 | Sun Shipbuilding & Dry Dock Co | Internal-combustion engine |
| WO1999000878A1 (en) | 1997-06-30 | 1999-01-07 | Mikael Burvall | Lamp socket |
| US6182619B1 (en) | 1998-12-24 | 2001-02-06 | General Atomics Aeronautical Systems, Inc. | Two-stroke diesel engine |
-
2001
- 2001-09-04 WO PCT/IB2001/001611 patent/WO2003021095A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112405C (en) * | 1899-01-07 | |||
| GB208670A (en) | 1923-03-09 | 1923-12-27 | Peter Hill | Twin piston engine |
| DE602660C (en) * | 1931-01-29 | 1934-09-13 | William Doxford & Sons Ltd | Machine with counter-rotating pistons acting on a crankshaft, in which the crosshead is connected to the upper piston by a pivot pin |
| US2120666A (en) * | 1937-02-03 | 1938-06-14 | Sun Shipbuilding & Dry Dock Co | Internal-combustion engine |
| WO1999000878A1 (en) | 1997-06-30 | 1999-01-07 | Mikael Burvall | Lamp socket |
| US6182619B1 (en) | 1998-12-24 | 2001-02-06 | General Atomics Aeronautical Systems, Inc. | Two-stroke diesel engine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2491155A (en) * | 2011-05-24 | 2012-11-28 | Cox Powertrain Ltd | Opposed piston combustion engine having fuel injector disposed at least partly within an engine cylinder |
| GB2491155B (en) * | 2011-05-24 | 2013-04-10 | Cox Powertrain Ltd | Opposed piston engine having injector located within cylinder |
| US9512777B2 (en) | 2011-05-24 | 2016-12-06 | Cox Powertrain Ltd. | Internal combustion engines |
| CN102797562A (en) * | 2011-07-11 | 2012-11-28 | 摩尔动力(北京)技术股份有限公司 | Air cylinder piston mechanism with multiple pistons sharing one axis |
| CN102979617A (en) * | 2011-11-16 | 2013-03-20 | 摩尔动力(北京)技术股份有限公司 | Double top opposed piston engine |
| CN109736947A (en) * | 2019-03-18 | 2019-05-10 | 张家港川梭车业有限公司 | A kind of Dual-piston IC engine |
| CN110374742A (en) * | 2019-08-01 | 2019-10-25 | 安徽天沃重工机械有限公司 | A kind of engineering machinery limiting body height and the multi-cylinder diesel engine for increasing stroke |
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