Patent US4194469A successfully refreshed from Google Patents.
US4194469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact V-type internal combustion engine
Assignee: Volkswagen AG
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Filing: 1978-08-04
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Granted: 1980-03-25
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Expires: 1998-08-04
Abstract
Abstract A V-type internal combustion engine including a plurality of pistons and cylinders acting on a crankshaft and having a common cylinder head. The pistons and cylinders are arranged in two banks, the cylinders of the first bank arranged interstitially with the cylinders of the second bank in a longitudinal direction. Each of the cylinders and/or pistons is provided with recesses facing the adjacent cylinder or cylinders which extends partially along the cylinder and/or piston from the crankshaft-side thereof.
Inventors
- 👤 Hermann Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:58
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B75/221; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/14; F02F2001/106
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
In a V-type internal combustion engine including a plurality of pistons and cylinders having a common cylinder head and a plurality of valves associated with the pistons and cylinders, said pistons acting on a crankshaft and said pistons and cylinders arranged in two banks, the cylinders of the first bank arranged interstitially with the cylinders of the second bank in a longitudinal direction, the improvement wherein each cylinder has at least one recess therein, one said recess for each adjacent cylinder, each said recess facing an adjacent cylinder and extending partially along said cylinder from the crankshaft-side thereof, and wherein said valves are arranged along a straight line.
Claim 2
Dependent Claim
108 words
In a V-type internal combustion engine including a plurality of pistons and cylinders having a common cylinder head and a plurality of valves associated with the pistons and cylinders, said pistons acting on a crankshaft and said pistons and cylinders arranged in two banks, the cylinders of the first bank arranged interstitially with the cylinders of the second bank in a longitudinal direction, the improvement wherein each cylinder has at least one recess therein, one said recess for each adjacent cylinder, each said recess facing an adjacent cylinder and extending partially along said cylinder from the crankshaft-side thereof, and wherein said valves are arranged along a straight line.
Claim 3
Dependent Claim
108 words
In a V-type internal combustion engine including a plurality of pistons and cylinders having a common cylinder head and a plurality of valves associated with the pistons and cylinders, said pistons acting on a crankshaft and said pistons and cylinders arranged in two banks, the cylinders of the first bank arranged interstitially with the cylinders of the second bank in a longitudinal direction, the improvement wherein each piston has at least one recess therein, one said recess for each adjacent cylinder, each said recess facing an adjacent cylinder and extending partially along said piston from the crankshaft-side thereof, and wherein said valves are arranged along a straight line.
Claim 4
Dependent Claim
108 words
In a V-type internal combustion engine including a plurality of pistons and cylinders having a common cylinder head and a plurality of valves associated with the pistons and cylinders, said pistons acting on a crankshaft and said pistons and cylinders arranged in two banks, the cylinders of the first bank arranged interstitially with the cylinders of the second bank in a longitudinal direction, the improvement wherein each piston has at least one recess therein, one said recess for each adjacent cylinder, each said recess facing an adjacent cylinder and extending partially along said piston from the crankshaft-side thereof, and wherein said valves are arranged along a straight line.
Claim 5
Dependent Claim
42 words
A V-type internal combustion engine according to claim 1, wherein each piston has at least one recess therein, one said recess for each adjacent cylinder, each said recess facing an adjacent cylinder and extending partially along said piston from the crankshaft-side thereof.
Claim 6
Dependent Claim
50 words
A V-type internal combustion engine including a plurality of inlet and outlet ports in the cylinder head associated with said valves, according to claim 1, 2, or 3, wherein said inlet and outlet ports are disposed relative to the longitudinal axis of rotation of the crankshaft at other than 90°.
Claim 7
Dependent Claim
50 words
A V-type internal combustion engine according to claim 1, 2, or 3, wherein the longitudinal axes of the cylinders associated with each said bank of cylinders lie in a common plane, and wherein at least one of said planes does not intersect the longitudinal axis of rotation of the crankshaft.
References Cited (Backward Citations)
FR387939A
Cited
US1531430A
Cited
US1429877A
Cited
US2944536A
Cited
US2941521A
Cited
US3034491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |