US5359972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tumble control valve for intake port
Assignee: Yamaha Motor Co Ltd
•
Filing: 1992-02-12
•
Granted: 1994-11-01
•
Expires: 2012-02-12
Abstract
Abstract A number of embodiments of induction systems for internal combustion engines wherein a control valve arrangement is provided in the induction passage for selectively generating either or both of tumble and/or swirl to the intake charge in response to varying running conditions. Various types of control valve arrangements are disclosed as are systems for cooling the control valves and augmenting the flow pattern caused by the control valve.
Inventors
- 👤 Yoshiharu Isaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:08
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10006; F02M35/10078; F02M35/10085; F01; F01L; F01L3/00; F01L3/06; F02B; F02B31/00; F02B31/04; F02B31/06; F02B31/08; F02B31/085; F02D; F02D9/00; F02D9/08; F02D9/12; F02D9/16; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F1/4221; F02M35/10209; F02M35/10216; F02M35/104; F02M35/108; F02M35/1085; F02B1/00; F02B1/02; F02B1/04; F02B2275/00; F02B2275/18; F02B2275/48; F02F2001/244; F02F2001/245; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
79 words
A porting arrangement for an internal combustion engine having a cylinder, a piston reciprocating within said cylinder, a cylinder head fixed to said cylinder, inlet port means for admitting a charge into said cylinder, and means cooperating with said inlet port means for selectively generating a circular swirl to a charge entering said cylinder from said inlet port means and a tumble motion to said charge around said cylinder between said cylinder head and a head of said piston.
Claim 2
Dependent Claim
79 words
A porting arrangement for an internal combustion engine having a cylinder, a piston reciprocating within said cylinder, a cylinder head fixed to said cylinder, inlet port means for admitting a charge into said cylinder, and means cooperating with said inlet port means for selectively generating a circular swirl to a charge entering said cylinder from said inlet port means and a tumble motion to said charge around said cylinder between said cylinder head and a head of said piston.
Claim 3
Dependent Claim
20 words
A porting arrangement as set forth in claim 1 wherein the inlet port means is formed in the cylinder head.
Claim 4
Dependent Claim
28 words
A porting arrangement as set forth in claim 2 wherein the inlet port means comprises a pair of inlet ports opening into the cylinder from the cylinder head.
Claim 5
Dependent Claim
24 words
A porting arrangement as set forth in claim 3 further including inlet passage means formed in the cylinder head and serving the inlet ports.
Claim 6
Dependent Claim
23 words
A porting arrangement as set forth in claim 4 wherein the means for generating the swirl and tumble motion comprises a control valve.
Claim 7
Dependent Claim
21 words
A porting arrangement as set forth in claim 5 wherein the control valve controls the configuration of the inlet passage means.
Claim 8
Dependent Claim
29 words
A porting arrangement as set forth in claim 5 wherein the inlet passage means comprises a pair of passages each terminating at a respective one of the inlet ports.
Claim 9
Dependent Claim
21 words
A porting arrangement as set forth in claim 7 wherein the control valve controls the configuration of the inlet passage means.
Claim 10
Dependent Claim
42 words
A porting arrangement as set forth in claim 8 wherein the circular swirl is generated by changing the effective flow areas of the respective passages for generating a higher flow velocity through one of the passages than the other of the passages.
Claim 11
Dependent Claim
30 words
A porting arrangement as set forth in claim 8 wherein the tumble motion is generated by redirecting the flow through the passages in a direction generally across the cylinder bore.
Claim 12
Dependent Claim
42 words
A porting arrangement as set forth in claim 10 wherein the circular swirl is generated by changing the effective flow areas of the respective passages for generating a higher flow velocity through one of the passages than the other of the passages.
Claim 13
Dependent Claim
42 words
A porting arrangement as set forth in claim 5 wherein the control valve is moveable between a first position wherein the circular swirl and tumble motion are generated and a second position wherein a different flow pattern in the cylinder is generated.
Claim 14
Dependent Claim
22 words
A porting arrangement as set forth in claim 12 wherein the different flow pattern is generally along the axis of the cylinder.
Claim 15
Dependent Claim
29 words
A porting arrangement as set forth in claim 13 wherein the inlet passage means comprises a pair of passages each terminating at a respective one of the inlet ports.
Claim 16
Dependent Claim
21 words
A porting arrangement as set forth in claim 14 wherein the control valve controls the configuration of the inlet passage means.
Claim 17
Dependent Claim
42 words
A porting arrangement as set forth in claim 15 wherein the circular swirl is generated by changing the effective flow areas of the respective passages for generating a higher flow velocity through one of the passages than the other of the passages.
Claim 18
Dependent Claim
30 words
A porting arrangement as set forth in claim 15 wherein the tumble motion is generated by redirecting the flow through the passages in a direction generally across the cylinder bore.
Claim 19
Dependent Claim
42 words
A porting arrangement as set forth in claim 17 wherein the circular swirl is generated by changing the effective flow areas of the respective passages for generating a higher flow velocity through one of the passages than the other of the passages.
Claim 20
Dependent Claim
73 words
A porting arrangement as set forth in claim 5 wherein the inlet passage means comprise first and second portions meeting at a bight and wherein the control valve is positioned at the bight, the control valve being moveable between a first position wherein the tumble and swirl are generated and a second position wherein the control valve provides a smooth surface between the first and second portions and there is no flow redirection.
Claim 21
Dependent Claim
29 words
A porting arrangement as set forth in claim 19 wherein the inlet passage means comprises a pair of passages each terminating at a respective one of the inlet ports.
Claim 22
Dependent Claim
21 words
A porting arrangement as set forth in claim 20 wherein the control valve controls the configuration of the inlet passage means.
Claim 23
Dependent Claim
42 words
A porting arrangement as set forth in claim 21 wherein the circular swirl is generated by changing the effective flow areas of the respective passages for generating a higher flow velocity through one of the passages than the other of the passages.
Claim 24
Dependent Claim
30 words
A porting arrangement as set forth in claim 21 wherein the tumble motion is generated by redirecting the flow through the passages in a direction generally across the cylinder bore.
Claim 25
Dependent Claim
42 words
A porting arrangement as set forth in claim 23 wherein the circular swirl is generated by changing the effective flow areas of the respective passages for generating a higher flow velocity through one of the passages than the other of the passages.
Claim 26
Dependent Claim
17 words
A porting arrangement as set forth in claim 19 further including means for cooling the control valve.
Claim 27
Dependent Claim
32 words
A porting arrangement as set forth in claim 25 wherein the means for cooling the control valve comprises means for injecting fuel into the passage means to impinge upon the control valve.
Claim 28
Dependent Claim
28 words
A porting arrangement as set forth in claim 25 wherein the means for cooling the control valve comprises means for directing an air flow across the control valve.
Claim 29
Dependent Claim
19 words
A porting arrangement as set forth in claim 27 wherein the air flow is delivered through the control valve.
Claim 30
Dependent Claim
28 words
A porting arrangement as set forth in claim 28 wherein the air flow across the control valve is directed in a direction to add to the swirling motion.
Claim 31
Dependent Claim
25 words
A porting arrangement as set forth in claim 28 wherein the air flow occurs only when the control valve is in one of its positions.
Claim 32
Dependent Claim
25 words
A porting arrangement as set forth in claim 27 wherein the air flow is delivered through another port and is directed toward the control valve.
Claim 33
Dependent Claim
18 words
A porting arrangement as set forth in claim 31 wherein the other port is controlled by a valve.
Claim 34
Dependent Claim
23 words
A porting arrangement as set forth in claim 32 wherein the other valve is operative only in certain positions of the control valve.
Claim 35
Dependent Claim
20 words
A porting arrangement as set forth in claim 32 wherein the other valve comprises a portion of the control valve.
Claim 36
Dependent Claim
28 words
A porting arrangement as set forth in claim 34 wherein the other control valve portion is open only when the control valve is in one of its positions.
Claim 37
Dependent Claim
26 words
A porting arrangement as set forth in claim 25 wherein the means for cooling the control valve comprises a water jacket juxtaposed to the control valve.
Claim 38
Dependent Claim
26 words
A porting arrangement as set forth in claim 36 wherein the water jacket is formed around the cylinder and in a cylinder block forming the cylinder.
Claim 39
Dependent Claim
19 words
A porting arrangement as set forth in claim 36 wherein the water jacket is formed in the cylinder head.
Claim 40
Dependent Claim
27 words
A porting arrangement as set forth in claim 38 wherein a water jacket is also formed around the cylinder and in a cylinder block forming the cylinder.
Claim 41
Dependent Claim
75 words
A porting arrangement as set forth in claim 8 wherein the cylinder is formed by a cylinder block to which the cylinder head is affixed by first threaded fastening means on one side of the cylinder block and adjacent the control valve and second threaded fastening means formed on the other side of the cylinder, the first threaded fastening means being positioned further from the bore of the cylinder than the second threaded fastening means.
Claim 42
Dependent Claim
101 words
A porting arrangement as set forth in claim 40 further including exhaust port means formed in the cylinder head on the opposite side from the inlet port means, intake valve means for controlling the inlet port means and exhaust valve means for controlling the exhaust port means, an intake camshaft supported for rotation about a first axis for operating said intake valve means, an exhaust camshaft supported for rotation about a second axis by said cylinder head for operating said exhaust valve means, said inlet camshaft axis being disposed further from the axis of the cylinder than the exhaust camshaft axis.
Claim 43
Dependent Claim
102 words
A porting arrangement as set forth in claim 8 further including an exhaust port means formed in the cylinder head on the opposite side from the inlet port means, intake valve means for controlling the inlet port means and exhaust valve means for controlling the exhaust port means, an intake camshaft supported for rotation about a first axis for operating said intake valve means, an exhaust camshaft supported for rotation about a second axis by said cylinder head for operating said exhaust valve means, said intake camshaft axis being disposed further from the axis of the cylinder than the exhaust camshaft axis.
Claim 44
Dependent Claim
80 words
A porting arrangement for an internal combustion engine having a cylinder, a piston reciprocating within said cylinder, a cylinder head fixed to said cylinder, inlet port means for admitting a charge to said cylinder, and means cooperating with said inlet port means for selectively generating either a circular swirl to a charge entering said cylinder from said inlet port means or a tumble motion to said charge around said cylinder between said cylinder head and a head of said piston.
Claim 45
Dependent Claim
80 words
A porting arrangement for an internal combustion engine having a cylinder, a piston reciprocating within said cylinder, a cylinder head fixed to said cylinder, inlet port means for admitting a charge to said cylinder, and means cooperating with said inlet port means for selectively generating either a circular swirl to a charge entering said cylinder from said inlet port means or a tumble motion to said charge around said cylinder between said cylinder head and a head of said piston.
Claim 46
Dependent Claim
20 words
A porting arrangement as set forth in claim 43 wherein the inlet port means is formed in the cylinder head.
Claim 47
Dependent Claim
28 words
A porting arrangement as set forth in claim 44 wherein the inlet port means comprises a pair of inlet ports opening into the cylinder from the cylinder head.
Claim 48
Dependent Claim
24 words
A porting arrangement as set forth in claim 45 further including inlet passage means formed in the cylinder head and serving the inlet ports.
Claim 49
Dependent Claim
23 words
A porting arrangement as set forth in claim 46 wherein the means for generating the swirl and tumble motion comprises a control valve.
Claim 50
Dependent Claim
21 words
A porting arrangement as set forth in claim 47 wherein the control valve controls the configuration of the inlet passage means.
Claim 51
Dependent Claim
28 words
A porting arrangement as set forth in claim 47 wherein the passage means comprises a pair of passages each terminating at a respective one of the inlet ports.
Claim 52
Dependent Claim
21 words
A porting arrangement as set forth in claim 49 wherein the control valve controls the configuration of the inlet passage means.
Claim 53
Dependent Claim
30 words
A porting arrangement as set forth in claim 50 wherein the tumble motion is generated by redirecting the flow through the passages in a direction generally across the cylinder bore.
Claim 54
Dependent Claim
38 words
A porting arrangement as set forth in claim 50 wherein the swirl is generated by delivering an air charge into one of the intake passages for accelerating the velocity of the air flow through said one intake passage.
Claim 55
Dependent Claim
18 words
A porting arrangement as set forth in claim 52 wherein the air charge is controlled by a valve.
Claim 56
Dependent Claim
23 words
A porting arrangement as set forth in claim 53 wherein the valve controlling the air flow comprises another portion of the control valve.
Claim 57
Dependent Claim
22 words
A porting arrangement as set forth in claim 52 wherein the air charge is delivered from an induction system for the engine.
Claim 58
Dependent Claim
32 words
A porting arrangement as set forth in claim 55 wherein the engine includes at least one additional cylinder and the air charge is delivered from the induction system serving that other cylinder.
Claim 59
Dependent Claim
33 words
A porting arrangement as set forth in claim 55 wherein the induction system has an atmospheric air inlet and the air charge is delivered from the atmospheric air inlet of the induction system.
Claim 60
Dependent Claim
23 words
A porting arrangement as set forth in claim 57 further including a throttle valve for controlling the flow through the atmospheric air inlet.
Claim 61
Dependent Claim
20 words
A porting arrangement as set forth in claim 58 wherein the air charge is derived upstream of the throttle valve.
Claim 62
Dependent Claim
20 words
A porting arrangement as set forth in claim 58 wherein the air charge is derived downstream of the throttle valve.
Claim 63
Dependent Claim
22 words
A porting arrangement engine having a cylinder, as set forth in claim 55 wherein the air charge is controlled by a valve.
Claim 64
Dependent Claim
23 words
A porting arrangement as set forth in claim 61 wherein the valve controlling the air flow comprises another portion of the control valve.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |