US4660513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing adjusted engine and conversion kit therefor
Assignee: VINDOF Inc
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Filing: 1985-11-26
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Granted: 1987-04-28
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Expires: 2005-11-26
Abstract
Abstract A two cycle internal combustion piston engine is provided with cam controlled inlet valves, as well as exhaust valves, disposed in the head of the engine cylinder. The two cycle engine can perform with an expansion ratio greater than the compression ratio. A standard two cycle internal combustion piston engine can be converted to the inventive two cycle engine construction by replacing the conventional engine cylinder head, replacing the conventional engine valve cam shaft, and directing air flow in the intake manifold to one side of the replacement cylinder head.
Inventors
- 👤 Vincent D. Figliuzzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:08
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/26; F02; F02B; F02B25/00; F02B25/02; F02B25/04; F02B25/14; F02B25/145; F02B33/00; F02B33/32; F02B33/34; F02B33/36; F02B33/38; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2275/00; F02B2275/20; F02B3/00; F02B3/06; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
162 words
A conversion package for modifying a two cycle internal combustion piston engine construction having a piston reciprocable in a cylinder, said cylinder having a cylinder head opposed from said piston to define a chamber therebetween and sidewalls formed with open ports controlled by said piston, a plurality of exhaust valve means for said chamber supported in said cylinder head controlled by cams on a rotating cam shaft, a fuel injection means in said cylinder head, and an air intake manifold in fluid communication with said open ports, comprising: a replacement cylinder head for supporting said exhaust valve means having a partition isolating at least one of said exhaust valve means in a first space and the remainder of said exhaust valve means in a separate second space, a replacement cam for controlling said at least one exhaust valve means in said first space, and an extension duct for fluidly connecting said intake manifold to said first space of said replacement cylinder head.
Claim 2
Dependent Claim
162 words
A conversion package for modifying a two cycle internal combustion piston engine construction having a piston reciprocable in a cylinder, said cylinder having a cylinder head opposed from said piston to define a chamber therebetween and sidewalls formed with open ports controlled by said piston, a plurality of exhaust valve means for said chamber supported in said cylinder head controlled by cams on a rotating cam shaft, a fuel injection means in said cylinder head, and an air intake manifold in fluid communication with said open ports, comprising: a replacement cylinder head for supporting said exhaust valve means having a partition isolating at least one of said exhaust valve means in a first space and the remainder of said exhaust valve means in a separate second space, a replacement cam for controlling said at least one exhaust valve means in said first space, and an extension duct for fluidly connecting said intake manifold to said first space of said replacement cylinder head.
Claim 3
Dependent Claim
16 words
The conversion package of claim 1, further comprising means preventing open ports in said cylinder sidewalls.
Claim 4
Independent Claim
187 words
A method of converting a two cycle internal combustion engine having a piston reciprocable in a cylinder, said cylinder having a cylinder head opposed from said piston to define a chamber therebetween and sidewalls formed with open ports controlled by said piston, a plurality of exhaust valve means for said chamber supported in said cylinder head controlled by cams on a rotating cam shaft, a fuel injection means in said cylinder head, and an air intake manifold in fluid communication with said open ports, comprising: replacing said cylinder head with a new cylinder head for supporting said exhaust valve means having a partition isolating at least one of said exhaust valve means in a first space and the remainder of said exhaust valve means in a separate second space, replacing said respective cam controlling said at least one exhaust valve means in said first space with a new cam having a profile for operating said at least one exhaust valve means for air intake into said chamber, and providing a further flow passage for connecting said intake manifold to said first space in said new cylinder head.
Claim 5
Independent Claim
187 words
A method of converting a two cycle internal combustion engine having a piston reciprocable in a cylinder, said cylinder having a cylinder head opposed from said piston to define a chamber therebetween and sidewalls formed with open ports controlled by said piston, a plurality of exhaust valve means for said chamber supported in said cylinder head controlled by cams on a rotating cam shaft, a fuel injection means in said cylinder head, and an air intake manifold in fluid communication with said open ports, comprising: replacing said cylinder head with a new cylinder head for supporting said exhaust valve means having a partition isolating at least one of said exhaust valve means in a first space and the remainder of said exhaust valve means in a separate second space, replacing said respective cam controlling said at least one exhaust valve means in said first space with a new cam having a profile for operating said at least one exhaust valve means for air intake into said chamber, and providing a further flow passage for connecting said intake manifold to said first space in said new cylinder head.
Claim 6
Dependent Claim
16 words
The method of claim 3, further comprising: providing means preventing open ports in said cylinder sidewalls.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |