US4768487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine intake passage
Assignee: Nissan Motor Co Ltd
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Filing: 1986-11-13
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Granted: 1988-09-06
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Expires: 2006-11-13
Abstract
Abstract A spacer, which is interposed between a cylinder head and an intake manifold in order to facilitate installation of a swirl control valve or valves, is made of thermosetting phenol or epoxy resin so as to prevent the transfer of heat from the cylinder head to the intake manifold. The spacer installs thereon a fuel injector or injectors and may be provided with a fuel supply passage, pressure regulator, fuel damper, etc. as an integral unit.
Inventors
- 👤 Yasuji Yamamoto
- 👤 Haruo Yuzawa
- 👤 Teruyoshi Nishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10314; F02M35/10321; F02B; F02B31/00; F02B31/08; F02B31/085; F02B77/00; F02M35/10006; F02M35/10078; F02M35/10085; F02M35/10209; F02M35/10216; F02M69/00; F02M69/46; F02M69/462; F02M69/465; F02M35/104; F02M35/112; F05; F05C; F05C2225/00; F05C2225/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
An air intake device for an internal combustion engine comprising: a cylinder head having an intake port; an intake manifold having an intake passage; and a spacer formed with an intake bore and interposed between said cylinder head and said intake manifold in such a manner that said intake port and said intake passage are communicated with each other through said intake bore, said spacer being formed with a thermosetting resinous material.
Claim 2
Dependent Claim
72 words
An air intake device for an internal combustion engine comprising: a cylinder head having an intake port; an intake manifold having an intake passage; and a spacer formed with an intake bore and interposed between said cylinder head and said intake manifold in such a manner that said intake port and said intake passage are communicated with each other through said intake bore, said spacer being formed with a thermosetting resinous material.
Claim 3
Dependent Claim
90 words
An air intake device for an internal combustion engine, comprising: a cylinder head having two intake ports for each engine cylinder; an intake manifold having two independent branch passages for each engine cylinder; a spacer formed with two intake bores and interposed between said cylinder head and said intake manifold in such a manner that said intake ports are communicated with said branch passages through said intake bores, respectively, said spacer being formed with a thermosetting resinous material; and a swirl control valve disposed in one of said intake bores.
Claim 4
Dependent Claim
90 words
An air intake device for an internal combustion engine, comprising: a cylinder head having two intake ports for each engine cylinder; an intake manifold having two independent branch passages for each engine cylinder; a spacer formed with two intake bores and interposed between said cylinder head and said intake manifold in such a manner that said intake ports are communicated with said branch passages through said intake bores, respectively, said spacer being formed with a thermosetting resinous material; and a swirl control valve disposed in one of said intake bores.
Claim 5
Dependent Claim
41 words
An air intake device as set forth in claim 2, further comprising a fuel injector for each engine cylinder and installed on said spacer in such a manner that its injection port is directed toward the other of said intake bores.
Claim 6
Dependent Claim
96 words
An air intake device as set forth in claim 3, further comprising fuel supply passage means formed in said spacer for supply of fuel to said fuel injector, fuel regulator means installed on said spacer for controlling the pressure of fuel to be supplied to said fuel supply passage means in such a manner that the difference in pressure between said fuel supply passage means and said other intake bore is held substantially constant, and fuel damper means installed on said spacer for preventing pulsation of fuel to be supplied to said fuel supply passage means.
Claim 7
Dependent Claim
30 words
An air intake device as set forth in claim 4 wherein said fuel regulator means and said fuel damper means are installed on the same longitudinal end of said spacer.
Claim 8
Dependent Claim
19 words
An air intake device as set forth in claim 1 wherein said thermosetting resinous material comprises thermosetting phenol resin.
Claim 9
Dependent Claim
19 words
An air intake device as set forth in claim 1 wherein said thermosetting resinous material comprises thermosetting epoxy resin.
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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) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |