US4543918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake manifold for an internal combustion engine
Assignee: Ford Motor Co
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Filing: 1983-10-24
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Granted: 1985-10-01
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Expires: 2003-10-24
Abstract
Abstract The invention relates to an induction manifold for a fuel injected internal combustion engine which comprises a rigid plenum chamber, intake pipes extending from the plenum chamber to the individual engine cylinders, and extensions of the individual intake pipes disposed within the plenum chamber. This construction enables the manifold to be tuned without occupying excessive space in the engine compartment.
Inventors
- 👤 Thomas T. Ma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10314; F02M35/10321; F02B; F02B27/00; F02B27/02; F02B27/0205; F02B27/0215; F02B27/0226; F02B27/0231; F02M35/10006; F02M35/10026; F02M35/10039; F02M35/10091; F02M35/10137; B; B29; B29K; B29K2995/00; B29K2995/0001; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1816; F02B75/20; F02M35/10111; F05; F05C; F05C2225/00; F05C2225/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
101 words
An induction manifold for a fuel injected multiple cylinder internal combustion engine which comprises a rigid air plenum chamber receiving a supply of air therein, a separate individual air intake pipe extending from the plenum chamber directly to each of individual engine cylinders, and an extension connected directly to each individual intake pipe and disposed within the plenum chamber for uniform uninterrupted supply of air to each individual intake pipe via its extension, each extension comprising a plurality of axially aligned and uniformly spaced pipe sections completely contained within said plenum chamber together providing an effective tuned length of intake pipe.
Claim 2
Dependent Claim
101 words
An induction manifold for a fuel injected multiple cylinder internal combustion engine which comprises a rigid air plenum chamber receiving a supply of air therein, a separate individual air intake pipe extending from the plenum chamber directly to each of individual engine cylinders, and an extension connected directly to each individual intake pipe and disposed within the plenum chamber for uniform uninterrupted supply of air to each individual intake pipe via its extension, each extension comprising a plurality of axially aligned and uniformly spaced pipe sections completely contained within said plenum chamber together providing an effective tuned length of intake pipe.
Claim 3
Dependent Claim
50 words
An induction manifold as in Claim 1, wherein the plenum and intake pipes are of a rigid material, and the pipe sections of each extension are formed of a semi rigid flexible material, the latter usage being permitted by the air pressures inside and outside the pipe section being equal.
References Cited (Backward Citations)
US2001669A
Cited
US4300488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |