CA2770273A1 - M - vc/s cam variable cycle/variable stroke cam internal combustion engine - Google Patents
M - vc/s cam variable cycle/variable stroke cam internal combustion engine Download PDFInfo
- Publication number
- CA2770273A1 CA2770273A1 CA 2770273 CA2770273A CA2770273A1 CA 2770273 A1 CA2770273 A1 CA 2770273A1 CA 2770273 CA2770273 CA 2770273 CA 2770273 A CA2770273 A CA 2770273A CA 2770273 A1 CA2770273 A1 CA 2770273A1
- Authority
- CA
- Canada
- Prior art keywords
- cam
- variable
- engine
- profiled
- cycle
- 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.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0002—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/04—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis the piston motion being transmitted by curved surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
- F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
- F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
-
- 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
- F02B75/26—Engines with cylinder axes coaxial with, or parallel or inclined to, main-shaft axis; Engines with cylinder axes arranged substantially tangentially to a circle centred on main-shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
- F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
- F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
- F01B2009/061—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces by cams
- F01B2009/063—Mono-lobe cams
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)
Abstract
A variable cycle / variable stroke profiled circular cam attached to a drive shaft motivated by multiple pistons reciprocating within annularly displaced stationary cylinders . The engine is designed to require a minimum of engine components to operate thus achieving a reduction in manufacturing time, cost, and energy requirements. Due to the low engine parts, operating efficiencies will result in lower fuel consumption and lower exhaust temperatures compared to existing engines of equivalent horsepower. Of importance is the function of the variable cycle/stroke feature profiled on the operating cam attached to the main drive shaft. The profiled cam ensures that the intake and compression strokes operate at one half the piston travel distance as that of the power and exhaust strokes. The pistons operate independently thus allowing for the profiled cam to be configured for a variable four cycle/stroke operation.
This engine design can use many existing modified components in the manufacturing process thus reducing the need for re-tooling requirements. The engine can be a direct replacement for all existing engine applications including automotive, aviation, marine and power tools. The engine design is capable of expanding from 1 cylinder to a multiple of cylinders depending on operational requirements.
This engine design can use many existing modified components in the manufacturing process thus reducing the need for re-tooling requirements. The engine can be a direct replacement for all existing engine applications including automotive, aviation, marine and power tools. The engine design is capable of expanding from 1 cylinder to a multiple of cylinders depending on operational requirements.
Description
, t M - VC/S CAM
Variable Cycle / Variable Stroke Cam Internal Combustion Engine a Description.
The engine's main design feature is the variable cycle and variable stroke (1 )Figure 1 and the cycle profiled operating cam (2) Figure 2 attached to a drive shaft (7). The engine design is simpler in construction and operation than existing similar designs.
The variable cycle/stroke profiled cam is designed as a new approach to internal combustion engine technology so that the intake and compression strokes are at least half the length of the power and exhaust strokes and the cam's circular variable cycle feature is designed so that the intake cycle Figure 1 (3) is 60 degrees, compression cycle (4) is 80 degrees, the power cycle (5) is 130 degrees, the exhaust cycle (6) is 90 degrees. The cycle spacing ensures that in a 4 or more cylinder configuration, there will always be two or more pistons on the power cycle/stroke. The power cycle/stroke allows the pistons to utilize the combustion force for the full linear length of the power cycle/stroke.
A counter clockwise or clockwise rotating power drive shaft (7) Figure 4 with specially cycle/stroke profiled operating cam (2) with an intake/exhaust manifold (8) connected directly to the drive shaft (7) via connecting shaft (9) secured with an end plate (29) and with provision for strategically located thrust bearings (28) strategicaly installed along the drive shaft and the engine housing (25). Main variable cycle/variable stroke profiled cam (2) is attached to the drive shaft either directly or machined to allow position adjustments and attached with bolts.
The cam is circular with the top portion wider (10) than the cam structure to allow piston wrist pins (12) to roll on top of the cam profile and rollers (13) to roll on the bottom of the cam lip (11).
Intake/exhaust steel plate (15) is also adjustable and directly attached to the intake/exhaust manifold (8) via a connecting rod (9) to the drive shaft (7). The intake/exhaust manifold plate is set to rotate sealed and flush with the top of the cylinder head (31). The plate has compatible strategically positioned intake opening (16) Figure 7 and exhaust opening (17) to match those in the cylinders' intake (18) and exhaust (19) requirement for intake and exhaust functions and timed to perform their functions at the appropriate cycle.
e The manifold (8) is grooved and sealed so that air/fuel from the carburetor or fuel injector(22) opening is continually available to inject into each cylinder intake port as the plate opening (16) passes over the cylinder head cover (33) opening (18) thus completing the intake cycle. Fuel can be injected directly into the cylinders.
The exhaust manifold (20) is a circular groove in the cylinder head cover(33) and the manifold (8) allowing continuous exhaust flow access to the exhaust manifold and also sealed from the air/fuel groove and is designed to accept the exhaust from the cylinders when the ports overlap and direct to the exhaust manifold exit (21). The intake groove (22) Figure 7 is set on the inner portion of the manifold (8) and the exhaust groove (20) on the outer portion of the manifold.
The pistons (23) Figure 5 operating inside cylinders (24) figures 6 and 7 are equally spaced in a circle (4 cylinders shown) with the cycle/stroke cam rotating through the middle of the cylinders. The cam's rotation is motivated by the powered pistons via wrist pins (12) Figure 5 rolling on top of the profiled cam and rollers (13) also attached to the pistons and roll on the underside of the cam lip attached to the wrist pin with a movable plate to allow the bottom roller flexibility to remain attached to the cam lip. This eliminates the requirement for connecting rods between the pistons and the cam. The stationary cylinder walls (24) Figure 6 have preset openings (30) to allow unobstructed cam rotation. An aluminum cylinder head (31) Figure 4 provides an interface between the cylinders and the intake 22 and exhaust groove (20) and steel plate (15) on the manifold (8) and the cylinder manifold cover (33).
ignition is provided utilizing electronic or standard spark plugs for each cylinder.
The engine casing (25) is indicated for simplicity and can be air or liquid cooled and contains provisions for engine oil lubrication and ancillary engine accessory equipment. Long mounting bolts (26) Figure 7 secure top and bottom sections of engine and short mounting bolts (27) secure the top and the same bolts secure the bottom sections. This alternating bolt spacing, ie;
26, 27, 26 etc; around the engine provide for the necessary engine security.
Exhaust gases exiting (21) Figure 4 will be at a reduced temperature due to the length of the power cycle/
stroke (5) Figure 1. The engine is mounted to the end product at 4 engine mounting locations (32) Figure 7.
Variable Cycle / Variable Stroke Cam Internal Combustion Engine a Description.
The engine's main design feature is the variable cycle and variable stroke (1 )Figure 1 and the cycle profiled operating cam (2) Figure 2 attached to a drive shaft (7). The engine design is simpler in construction and operation than existing similar designs.
The variable cycle/stroke profiled cam is designed as a new approach to internal combustion engine technology so that the intake and compression strokes are at least half the length of the power and exhaust strokes and the cam's circular variable cycle feature is designed so that the intake cycle Figure 1 (3) is 60 degrees, compression cycle (4) is 80 degrees, the power cycle (5) is 130 degrees, the exhaust cycle (6) is 90 degrees. The cycle spacing ensures that in a 4 or more cylinder configuration, there will always be two or more pistons on the power cycle/stroke. The power cycle/stroke allows the pistons to utilize the combustion force for the full linear length of the power cycle/stroke.
A counter clockwise or clockwise rotating power drive shaft (7) Figure 4 with specially cycle/stroke profiled operating cam (2) with an intake/exhaust manifold (8) connected directly to the drive shaft (7) via connecting shaft (9) secured with an end plate (29) and with provision for strategically located thrust bearings (28) strategicaly installed along the drive shaft and the engine housing (25). Main variable cycle/variable stroke profiled cam (2) is attached to the drive shaft either directly or machined to allow position adjustments and attached with bolts.
The cam is circular with the top portion wider (10) than the cam structure to allow piston wrist pins (12) to roll on top of the cam profile and rollers (13) to roll on the bottom of the cam lip (11).
Intake/exhaust steel plate (15) is also adjustable and directly attached to the intake/exhaust manifold (8) via a connecting rod (9) to the drive shaft (7). The intake/exhaust manifold plate is set to rotate sealed and flush with the top of the cylinder head (31). The plate has compatible strategically positioned intake opening (16) Figure 7 and exhaust opening (17) to match those in the cylinders' intake (18) and exhaust (19) requirement for intake and exhaust functions and timed to perform their functions at the appropriate cycle.
e The manifold (8) is grooved and sealed so that air/fuel from the carburetor or fuel injector(22) opening is continually available to inject into each cylinder intake port as the plate opening (16) passes over the cylinder head cover (33) opening (18) thus completing the intake cycle. Fuel can be injected directly into the cylinders.
The exhaust manifold (20) is a circular groove in the cylinder head cover(33) and the manifold (8) allowing continuous exhaust flow access to the exhaust manifold and also sealed from the air/fuel groove and is designed to accept the exhaust from the cylinders when the ports overlap and direct to the exhaust manifold exit (21). The intake groove (22) Figure 7 is set on the inner portion of the manifold (8) and the exhaust groove (20) on the outer portion of the manifold.
The pistons (23) Figure 5 operating inside cylinders (24) figures 6 and 7 are equally spaced in a circle (4 cylinders shown) with the cycle/stroke cam rotating through the middle of the cylinders. The cam's rotation is motivated by the powered pistons via wrist pins (12) Figure 5 rolling on top of the profiled cam and rollers (13) also attached to the pistons and roll on the underside of the cam lip attached to the wrist pin with a movable plate to allow the bottom roller flexibility to remain attached to the cam lip. This eliminates the requirement for connecting rods between the pistons and the cam. The stationary cylinder walls (24) Figure 6 have preset openings (30) to allow unobstructed cam rotation. An aluminum cylinder head (31) Figure 4 provides an interface between the cylinders and the intake 22 and exhaust groove (20) and steel plate (15) on the manifold (8) and the cylinder manifold cover (33).
ignition is provided utilizing electronic or standard spark plugs for each cylinder.
The engine casing (25) is indicated for simplicity and can be air or liquid cooled and contains provisions for engine oil lubrication and ancillary engine accessory equipment. Long mounting bolts (26) Figure 7 secure top and bottom sections of engine and short mounting bolts (27) secure the top and the same bolts secure the bottom sections. This alternating bolt spacing, ie;
26, 27, 26 etc; around the engine provide for the necessary engine security.
Exhaust gases exiting (21) Figure 4 will be at a reduced temperature due to the length of the power cycle/
stroke (5) Figure 1. The engine is mounted to the end product at 4 engine mounting locations (32) Figure 7.
Drawings Sheet 1: Figure 1 - cycle/stroke profile Figure 2 - cam/power shaft diagram Figure 3 - top view of cam Sheet 2: Figure 4 - side view of engine with selected components outlined Sheet 3: Figure 5 - piston cam interface Sheet 4: Figure 6- cylinder liner location and relationship to cam Sheet 5: Figure 7 - top view of cam/piston/wristpin interface Sheet 6: Figure 8 - top view of manifold with intake/exhaust ports and openings Sheet 7: Figure 9 - exploded view of cylinder head/plate/manifold/cylinder manifold cover Sheet 8: Figure 10- cylinder head Sheet 9: Figure 11 - manifold steel plate with intake/exhaust openings Sheet 10: Figure 12 - manifold Sheet 11: Figure 13 - cylinder manifold cover
Claims (7)
1. An internal combustion engine designed to operate consisting of a variable cycle and a variable stroke profiled cam to power an output drive shaft, it's rotation motivated by multiple pistons operating in stationary annularly distributed cylinders.
2. A circular variable cycle/variable stroke profiled operating cam
3. Pistons with wristpins powering and rolling on a variable cycle/variable stroke profiled operating cam attached to a power output drive shaft.
4. Secondary rollers and operating mechanism attached to piston wrist pin and in contact with the underside of the operating cam lip .
5. A circular rotating manifold inside a cylinder manifold cover containing both intake and exhaust passages to provide the necessary intake and exhaust functions and attached to the power output drive shaft.
6. Integrated power output shaft, manifold connecting rod and manifold rotating structure.
7. Grooved cylinder liners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2770273 CA2770273A1 (en) | 2012-02-28 | 2012-02-28 | M - vc/s cam variable cycle/variable stroke cam internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2770273 CA2770273A1 (en) | 2012-02-28 | 2012-02-28 | M - vc/s cam variable cycle/variable stroke cam internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2770273A1 true CA2770273A1 (en) | 2013-08-28 |
Family
ID=49080451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2770273 Abandoned CA2770273A1 (en) | 2012-02-28 | 2012-02-28 | M - vc/s cam variable cycle/variable stroke cam internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2770273A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015028789A1 (en) * | 2013-08-30 | 2015-03-05 | Newlenoir Limited | Piston arrangement and internal combustion engine |
| GB2522204A (en) * | 2014-01-15 | 2015-07-22 | Newlenoir Ltd | Piston arrangement |
-
2012
- 2012-02-28 CA CA 2770273 patent/CA2770273A1/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015028789A1 (en) * | 2013-08-30 | 2015-03-05 | Newlenoir Limited | Piston arrangement and internal combustion engine |
| AU2014313923B2 (en) * | 2013-08-30 | 2018-02-22 | Newlenoir Limited | Piston arrangement and internal combustion engine |
| US10260411B2 (en) | 2013-08-30 | 2019-04-16 | Newlenoir Limited | Piston arrangement and internal combustion engine |
| GB2522204A (en) * | 2014-01-15 | 2015-07-22 | Newlenoir Ltd | Piston arrangement |
| GB2522204B (en) * | 2014-01-15 | 2016-06-22 | Newlenoir Ltd | Piston arrangement |
| US10472964B2 (en) | 2014-01-15 | 2019-11-12 | Newlenoir Limited | Piston arrangement |
| US10858938B2 (en) | 2014-01-15 | 2020-12-08 | Newlenoir Limited | Piston arrangement |
| US11008863B2 (en) | 2014-01-15 | 2021-05-18 | Newlenoir Limited | Piston arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20160302 |