US4886020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine induction system
Assignee: Motors Liquidation Co
•
Filing: 1988-11-21
•
Granted: 1989-12-12
•
Expires: 2008-11-21
Abstract
Abstract An internal combustion engine has a tuned induction system with an air cleaner connected by a conduit with a separate plenum mounted on a manifold with individual runners connecting with the engine cylinders. A throttle body having a throttle to control induction air flow is located between the plenum and the manifold with its runner such that the plenum is not subject to reduced manifold pressures resulting from throttling the air flow.
Inventors
- 👤 Rudolf Bitter
- 👤 Gunter Senff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10242; F02M35/10255; F02B; F02B27/00; F02B27/005; F02B75/00; F02B75/16; F02B75/18; F02M35/10006; F02M35/10026; F02M35/10052; F02M35/10072; F02M35/10091; F02M35/10131; F02M35/10373; F02M35/10386; F02B2275/00; F02B2275/18; F02B75/20; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
70 words
An internal combustion engine having an induction system with a plenum disposed upstream of intake runners, said plenum being connected in series with an upstream air filter and having a throttle body with a throttle valve to control intake air flow, characterized in that the throttle body (9)is located directly at the outlet of the plenum (10) between the plenum (10) and a manifold including the intake runners (7, 8).
Claim 2
Dependent Claim
70 words
An internal combustion engine having an induction system with a plenum disposed upstream of intake runners, said plenum being connected in series with an upstream air filter and having a throttle body with a throttle valve to control intake air flow, characterized in that the throttle body (9)is located directly at the outlet of the plenum (10) between the plenum (10) and a manifold including the intake runners (7, 8).
Claim 3
Dependent Claim
44 words
An internal combustion engine according to claim 1, characterized in that the throttle body (9), along with the manifold and intake runners (7, 8) is mounted on the cylinder head (2), and that the plenum (10) is set directly on the throttle body (9).
Claim 4
Dependent Claim
32 words
An internal combustion engine according to claim 2, characterized in that the throttle body (9) opens into the plenum (10) at a location spaced from the side walls of the plenum (10).
Claim 5
Dependent Claim
75 words
An internal combustion engine having an induction system with a plenum disposed upstream of and defining a sole flow path to intake runners, said plenum being connected in series with an upstream air filter and having a throttle body with a throttle valve to control intake air flow, wherein the throttle body (9) is located at the outlet of the plenum (10) between the plenum (10) and a manifold including the intake runners (7, 8).
Claim 6
Dependent Claim
75 words
An internal combustion engine having an induction system with a plenum disposed upstream of and defining a sole flow path to intake runners, said plenum being connected in series with an upstream air filter and having a throttle body with a throttle valve to control intake air flow, wherein the throttle body (9) is located at the outlet of the plenum (10) between the plenum (10) and a manifold including the intake runners (7, 8).
References Cited (Backward Citations)
US3677240A
Cited
US4541399A
Cited
US4538556A
Cited
US4565166A
Cited
US4574748A
Cited
US4628873A
Cited
US4765285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |