US5005536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine induction system
Assignee: Yamaha Motor Co Ltd
•
Filing: 1990-08-03
•
Granted: 1991-04-09
•
Expires: 2010-08-03
Abstract
Abstract Two embodiments of compact high performance induction systems for V type engines that include pairs of plenum chambers that extend over the respective cylinder banks. First pairs of runners extend from an inlet opening in each plenum chamber to an outlet opening that communicates with the cylinder of the opposite bank. Second pairs of intake passages are provided which extend from inlet openings in the respective plenum chambers to outlet openings in the cylinders of the adjacent cylinder head. The first intake passages have portions that extend through the other plenum chambers and the second intake passages communicate with the cylinders through these intermediate portions. The intermediate portions are curved and in one embodiment the second intake passages are tangential to these curved portions and in the other embodiment they are radial to it.
Inventors
- 👤 Takamitsu Suzuki
- 👤 Takeshi Iwanami
- 👤 Minoru Yonezawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:04
CPC Classifications
F; F02; F02B; F02B27/00; F02B27/02; F02B27/0226; F02B27/0247; F02B27/0252; F02B27/0205; F02B27/0215; F02B27/0221; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02F; F02F2200/00; F02F2200/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
151 words
An induction system for a V type engine comprised of a pair of angularly disposed cylinder banks, each formed with at least one cylinder, first and second plenum chambers each lying above a respective one of said cylinder banks, means for admitting an atmospheric air charge to said plenum chambers, a pair of first intake passages each having an inlet opening in one of said plenum chambers and an outlet communicating with the cylinder of the opposite cylinder bank and an intermediate portion passing at least in part through the other plenum chamber, a pair of second intake passages, each extending from one of said plenum chambers to the cylinder of the adjacent cylinder bank, each of said plenum chambers having an upper surface formed at least in part by a removable cover plate for affording access to the interior of the respective plenum chamber when said cover plate is removed.
Claim 2
Dependent Claim
151 words
An induction system for a V type engine comprised of a pair of angularly disposed cylinder banks, each formed with at least one cylinder, first and second plenum chambers each lying above a respective one of said cylinder banks, means for admitting an atmospheric air charge to said plenum chambers, a pair of first intake passages each having an inlet opening in one of said plenum chambers and an outlet communicating with the cylinder of the opposite cylinder bank and an intermediate portion passing at least in part through the other plenum chamber, a pair of second intake passages, each extending from one of said plenum chambers to the cylinder of the adjacent cylinder bank, each of said plenum chambers having an upper surface formed at least in part by a removable cover plate for affording access to the interior of the respective plenum chamber when said cover plate is removed.
Claim 3
Dependent Claim
25 words
An induction system as set forth in claim 1 wherein the intermediate portion of the first intake passages lies completely within the other plenum chamber.
Claim 4
Dependent Claim
43 words
An induction system as set forth in claim 1 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 5
Dependent Claim
19 words
An induction system as set forth in claim 3 wherein the intake device has a generally Y shaped configuration.
Claim 6
Dependent Claim
15 words
An induction system as set forth in claim 1 wherein the intermediate portion is curved.
Claim 7
Dependent Claim
24 words
An induction system as set forth in claim 5 wherein the second intake passage communicates with the first intake passage at its curved portion.
Claim 8
Dependent Claim
32 words
An induction system as set forth in claim 6 wherein the second intake passage extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 9
Dependent Claim
30 words
An induction system as set forth in claim 7 further including throttle valve means for controlling the flow through the second intake passages in response to an engine running condition.
Claim 10
Dependent Claim
43 words
An induction system as set forth in claim 6 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 11
Dependent Claim
19 words
An induction system as set forth in claim 9 wherein the intake device has a generally Y shaped configuration.
Claim 12
Dependent Claim
32 words
An induction system as set forth in claim 10 wherein the second intake passage extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 13
Dependent Claim
30 words
An induction system as set forth in claim 11 further including throttle valve means for controlling the flow through the second intake passages in response to an engine running condition.
Claim 14
Dependent Claim
27 words
An induction system as set forth in claim 1 wherein the first and second intake passages each communicate with a common intake port for the cylinder head.
Claim 15
Dependent Claim
25 words
An induction system as set forth in claim 13 wherein the intermediate portion of the first intake passages lies completely within the other plenum chamber.
Claim 16
Dependent Claim
43 words
An induction system as set forth in claim 13 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 17
Dependent Claim
19 words
An induction system as set forth in claim 15 wherein the intake device has a generally Y shaped configuration.
Claim 18
Dependent Claim
15 words
An induction system as set forth in claim 13 wherein the intermediate portion is curved.
Claim 19
Dependent Claim
24 words
An induction system as set forth in claim 17 wherein the second intake passage communicates with the first intake passage at its curved portion.
Claim 20
Dependent Claim
32 words
An induction system as set forth in claim 18 wherein the second intake passage extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 21
Dependent Claim
30 words
An induction system as set forth in claim 19 further including throttle valve means for controlling the flow through the second intake passage in response to an engine running condition.
Claim 22
Dependent Claim
43 words
An induction system as set forth in claim 18 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 23
Dependent Claim
19 words
An induction system as set forth in claim 21 wherein the intake device has a generally Y shaped configuration.
Claim 24
Dependent Claim
32 words
An induction system as set forth in claim 22 wherein the second intake passage extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 25
Dependent Claim
30 words
An induction system as set forth in claim 23 further including throttle valve means for controlling the flow through the second intake passages in response to an engine running condition.
Claim 26
Dependent Claim
137 words
An induction system for a V type engine comprised of a pair of angularly disposed cylinder banks, each formed with at least one cylinder, first and second plenum chambers each lying above a respective one of said cylinder banks, a pair of first intake passages each having an inlet opening in one of said plenum chambers and an outlet communicating with the cylinder of the opposite cylinder bank and an intermediate portion passing at least in part through the other plenum chamber, a pair of second intake passages, each extending from one of said plenum chambers to the cylinder of the adjacent cylinder bank, and means for admitting an atmospheric charge to said plenum chambers comprising an induction device having inlet openings into the lower walls of said plenum chambers and extending beneath the first intake passages.
Claim 27
Dependent Claim
137 words
An induction system for a V type engine comprised of a pair of angularly disposed cylinder banks, each formed with at least one cylinder, first and second plenum chambers each lying above a respective one of said cylinder banks, a pair of first intake passages each having an inlet opening in one of said plenum chambers and an outlet communicating with the cylinder of the opposite cylinder bank and an intermediate portion passing at least in part through the other plenum chamber, a pair of second intake passages, each extending from one of said plenum chambers to the cylinder of the adjacent cylinder bank, and means for admitting an atmospheric charge to said plenum chambers comprising an induction device having inlet openings into the lower walls of said plenum chambers and extending beneath the first intake passages.
Claim 28
Dependent Claim
25 words
An induction system as set forth in claim 25 wherein the intermediate portion of the first intake passages lies completely within the other plenum chamber.
Claim 29
Dependent Claim
19 words
An induction system as set forth in claim 25 wherein the intake device has a generally Y shaped configuration.
Claim 30
Dependent Claim
15 words
An induction system as set forth in claim 25 wherein the intermediate portion is curved.
Claim 31
Dependent Claim
24 words
An induction system as set forth in claim 28 wherein the second intake passage communicates with the first intake passage and its curved portion.
Claim 32
Dependent Claim
32 words
An induction system as set forth in claim 29 wherein the second intake passage extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 33
Dependent Claim
30 words
An induction system as set forth in claim 30 further including throttle valve means for controlling the flow through the second intake passages in response to an engine running condition.
Claim 34
Dependent Claim
30 words
An induction system as set forth in claim 25 further including throttle valve means for controlling the flow through the second intake passages in response to an engine running condition.
Claim 35
Dependent Claim
27 words
An induction system as set forth in claim 25 wherein the first and second intake passages each communicate with a common intake port for the cylinder head.
Claim 36
Dependent Claim
25 words
An induction system as set forth in claim 33 wherein the intermediate portion of the first intake passages lies completely within the other plenum chamber.
Claim 37
Dependent Claim
15 words
An induction system as set forth in claim 33 wherein the intermediate portion is curved.
Claim 38
Dependent Claim
24 words
An induction system as set forth in claim 35 wherein the second intake passage communicates with the first intake passage at its curved portion.
Claim 39
Dependent Claim
32 words
An induction system as set forth in claim 36 wherein the second intake passage extend tangentially to the curved portion of the first intake passage and in a direction toward it outlet.
Claim 40
Dependent Claim
30 words
An induction system as set forth in claim 37 further including throttle valve means for controlling the flow through the second intake passages in response to an engine running condition.
Claim 41
Dependent Claim
124 words
An induction system for a V type engine comprised of a pair of angularly disposed cylinder banks, each formed with at least one cylinder, first and second plenum chambers each lying above a respective one of said cylinder banks, means for admitting an atmospheric air charge to said plenum chambers, a pair of first intake passages each having an inlet opening in one of said plenum chambers and an outlet communicating with the cylinder of the opposite cylinder bank and an intermediate portion passing at least in part through the other plenum chamber, and a pair of second intake passages, each defined in part by a tuning neck extending from within one of said plenum chambers to the cylinder of the adjacent cylinder bank.
Claim 42
Dependent Claim
124 words
An induction system for a V type engine comprised of a pair of angularly disposed cylinder banks, each formed with at least one cylinder, first and second plenum chambers each lying above a respective one of said cylinder banks, means for admitting an atmospheric air charge to said plenum chambers, a pair of first intake passages each having an inlet opening in one of said plenum chambers and an outlet communicating with the cylinder of the opposite cylinder bank and an intermediate portion passing at least in part through the other plenum chamber, and a pair of second intake passages, each defined in part by a tuning neck extending from within one of said plenum chambers to the cylinder of the adjacent cylinder bank.
Claim 43
Dependent Claim
25 words
An induction system as set forth in claim 39 wherein the intermediate portion of the first intake passages lies completely within the other plenum chamber.
Claim 44
Dependent Claim
43 words
An induction system as set forth in claim 39 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 45
Dependent Claim
19 words
An induction system as set forth in claim 39 wherein the intake device has a generally Y shaped configuration.
Claim 46
Dependent Claim
15 words
An induction system as set forth in claim 39 wherein the intermediate portion is curved.
Claim 47
Dependent Claim
29 words
An induction system as set forth in claim 43 wherein each of tuning necks of the second intake passage communicates with the first intake passage at its curved portion.
Claim 48
Dependent Claim
31 words
An induction system as set forth in claim 44 wherein the tuning neck extends tangentially to the curved portion of the first intake passage and in a direct toward its outlet.
Claim 49
Dependent Claim
27 words
An induction system as set forth in claim 45 further including throttle valve means in the tuning necks for controlling the flow through the second intake passages.
Claim 50
Dependent Claim
43 words
An induction system as set forth in claim 44 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 51
Dependent Claim
31 words
An induction system as set forth in claim 47 wherein the tuning neck extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 52
Dependent Claim
34 words
An induction system as set forth in claim 48 further including throttle valve means in the tuning necks for controlling the flow through the second intake passages in response to an engine running condition.
Claim 53
Dependent Claim
27 words
An induction system as set forth in claim 46 wherein the first and second intake passages each communicate with a common intake port for the cylinder head.
Claim 54
Dependent Claim
25 words
An induction system as set forth in claim 49 wherein the intermediate portion of the first intake passages lies completely within the other plenum chamber.
Claim 55
Dependent Claim
43 words
An induction system as set forth in claim 50 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 56
Dependent Claim
19 words
An induction system as set forth in claim 52 wherein the intake device has a generally Y shaped configuration.
Claim 57
Dependent Claim
15 words
An induction system as set forth in claim 50 wherein the intermediate portion is curved.
Claim 58
Dependent Claim
23 words
An induction system as set forth in claim 54 wherein the tuning neck communicates with the first intake passage at its curved portion.
Claim 59
Dependent Claim
31 words
An induction system as set forth in claim 55 wherein the tuning neck extends longitudinally to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 60
Dependent Claim
34 words
An induction system as set forth in claim 55 further including throttle valve means in the tuning necks for controlling the flow through the second intake passages in response to an engine running condition.
Claim 61
Dependent Claim
43 words
An induction system as set forth in claim 55 wherein the means for admitting an atmospheric charge to the plenum chambers comprises an induction device having inlet openings into the lower walls of the plenum chambers and extending beneath the first intake passages.
Claim 62
Dependent Claim
19 words
In induction system as set forth in claim 58 wherein the intake device has a generally Y shaped configuration.
Claim 63
Dependent Claim
31 words
An induction system as set forth in claim 59 wherein the tuning neck extends tangentially to the curved portion of the first intake passage and in a direction toward its outlet.
Claim 64
Dependent Claim
34 words
An induction system as set forth in claim 60 further including throttle valve means in the tuning necks for controlling the flow through the second intake passages in response to an engine running condition.
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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) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |