US4381749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake device for engine
Assignee: Yamaha Motor Co Ltd
•
Filing: 1981-05-04
•
Granted: 1983-05-03
•
Expires: 2001-05-04
Abstract
Abstract An induction system for an internal combustion engine including an auxiliary induction system formed by a spacer and a plurality of pipes extending from the spacer into each of the engine cylinder head main intake passages. Each pipe is formed with a deflector portion at its end so that a charge will be delivered directly to the chambers of the engine from the pipes without impingement upon the cylinder head surfaces.
Inventors
- 👤 Keiichi Sugiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:18
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10209; F02M35/10222; F02B; F02B31/00; F02B31/08; F02M35/10006; F02M35/10078; F02M35/10085; F02M35/10242; F02M35/10262; F02M35/104; F02M35/108; F02M35/112; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
In an induction system for a variable volume chamber of an internal combustion engine comprising a main intake passage discharging into said chamber and an auxiliary induction passage formed at least in part by a pipe extending into the main intake passage and terminating contiguous to its point of discharge into the chamber and having an outlet communicating with said main intake passage contiguous to its point of discharge into said chamber, said auxiliary induction passage having a substantially smaller effective area than said main intake passage, the improvement comprising deflector means positioned at the outlet of said auxiliary induction passage for redirecting the flow issuing therefrom, said deflector means comprising an integral end portion of said pipe configured to direct the flow from the pipe in a direction other than along the axis of the pipe.
Claim 2
Dependent Claim
137 words
In an induction system for a variable volume chamber of an internal combustion engine comprising a main intake passage discharging into said chamber and an auxiliary induction passage formed at least in part by a pipe extending into the main intake passage and terminating contiguous to its point of discharge into the chamber and having an outlet communicating with said main intake passage contiguous to its point of discharge into said chamber, said auxiliary induction passage having a substantially smaller effective area than said main intake passage, the improvement comprising deflector means positioned at the outlet of said auxiliary induction passage for redirecting the flow issuing therefrom, said deflector means comprising an integral end portion of said pipe configured to direct the flow from the pipe in a direction other than along the axis of the pipe.
Claim 3
Dependent Claim
63 words
An induction system as set forth in claim 1 wherein the variable volume chamber is formed at least in part by a recess in a cylinder head, the main intake passage being formed in the cylinder head and terminating at a main intake port in said recess, and an intake valve for controlling the communication of said main intake passage with said recess.
Claim 4
Dependent Claim
32 words
An induction system as set forth in claim 2 wherein the auxiliary intake passage outlet is disposed in proximity to the intake valve when the intake valve is in its closed position.
Claim 5
Dependent Claim
32 words
An induction system as set forth in claims 1 or 3 further including valve means for controlling the proportion of charge delivered to the chambers through the main and auxiliary intake passages.
Claim 6
Dependent Claim
47 words
An induction system as set forth in claim 4 wherein the auxiliary induction passage has its inlet disposed in the main induction passage upstream of the valve and the valve is located upstream of the discharge of the main intake passage and of the auxiliary induction passage.
Claim 7
Dependent Claim
29 words
An induction system as set forth in claim 5 wherein the valve is supported in a spacer affixed to the engine, the pipe being press fit into said spacer.
Claim 8
Dependent Claim
27 words
An induction system as set forth in claim 5 wherein there are a plurality of cylinders each having main intake passages and auxiliary induction passages as defined.
Claim 9
Dependent Claim
126 words
An induction system for a variable volume chamber of an internal combustion engine comprising a cylinder head formed with a main intake passage communicating with said chamber at is outlet end and opening at its other end through a wall of said cylinder head, a spacer affixed to said wall of said cylinder head and having a main intake passage aligned with the opening of said cylinder head main intake passage, a pipe supported by said spacer and extending into said cylinder head main intake passage, said pipe terminating at one end contiguous to the outlet end of said main intake passage, and means for communicating the other end of the pipe with a charge source for providing a charge to the chamber through said pipe.
Claim 10
Dependent Claim
126 words
An induction system for a variable volume chamber of an internal combustion engine comprising a cylinder head formed with a main intake passage communicating with said chamber at is outlet end and opening at its other end through a wall of said cylinder head, a spacer affixed to said wall of said cylinder head and having a main intake passage aligned with the opening of said cylinder head main intake passage, a pipe supported by said spacer and extending into said cylinder head main intake passage, said pipe terminating at one end contiguous to the outlet end of said main intake passage, and means for communicating the other end of the pipe with a charge source for providing a charge to the chamber through said pipe.
Claim 11
Dependent Claim
130 words
An induction system for a variable volume chamber of an internal combustion engine comprising a cylinder head formed with a main intake passage communicating with said chamber at is outlet end and opening at its other end through a wall of said cylinder head, a spacer affixed to said wall of said cylinder head and having a main intake passage aligned with the opening of said cylinder head main intake passage, a pipe supported by said spacer and extending into said cylinder head main intake passage, said pipe terminating at one end contiguous to the outlet end of said main intake passage, and a valve in said main intake passage of said spacer, said pipe having its inlet in communication with the spacer main intake passage upstream of the valve.
Claim 12
Dependent Claim
130 words
An induction system for a variable volume chamber of an internal combustion engine comprising a cylinder head formed with a main intake passage communicating with said chamber at is outlet end and opening at its other end through a wall of said cylinder head, a spacer affixed to said wall of said cylinder head and having a main intake passage aligned with the opening of said cylinder head main intake passage, a pipe supported by said spacer and extending into said cylinder head main intake passage, said pipe terminating at one end contiguous to the outlet end of said main intake passage, and a valve in said main intake passage of said spacer, said pipe having its inlet in communication with the spacer main intake passage upstream of the valve.
Claim 13
Dependent Claim
74 words
An induction system as set forth in claim 9 wherein there are a plurality of chambers, there being one main cylinder head intake passage serving each of the chambers, the spacer being comprised of a common member affixed to the cylinder head and having main intake passages aligned with each of the cylinder head intake passages, there being a pipe supported by the spacer and extending into each of the cylinder main intake passages.
References Cited (Backward Citations)
US4292944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |