US4966110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake air flow control apparatus of internal-combustion engine
Assignee: Honda Motor Co Ltd
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Filing: 1989-10-31
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Granted: 1990-10-30
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Expires: 2009-10-31
Abstract
Abstract An intake air flow control apparatus for an internal-combustion engine, which includes a valve lift characteristic control means for variable control of the lift characteristics of intake and exhaust valves for the internal-combustion engine and a deceleration intake control means for controlling the quantity of intake air to be supplied to the downstream side of the intake throttle valve during the deceleration operation of the engine, comprises an intake control characteristic change means for changing the control characteristics of the deceleration intake control means in response to the valve lift characteristic control.
Inventors
- 👤 Yasunari Seki
- 👤 Yuzuru Koike
- 👤 Yosuke Tachibana
- 👤 Kiyoshi Tsukimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/26; F01L1/267; F02; F02D; F02D13/00; F02D13/02; F02D13/0203; F02D13/0207; F02D41/00; F02D41/0002; F02D41/0005; F02B; F02B2275/00; F02B2275/18; F02D2041/001; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
An intake air flow control apparatus for an internal-combustion engine including a valve lift characteristic control means for variable control of lift characteristics of an intake valve or an exhaust valve of an internal-combustion engine, and a deceleration intake control means for controlling the quantity of intake air to be supplied at the downstream side of an intake throttle valve during the decelerating operation of said internal-combustion engine, said intake air flow control apparatus comprising: an intake control characteristic change means for changing control characteristics of said deceleration intake control means in response to said value lift characteristic control.
Claim 2
Dependent Claim
99 words
An intake air flow control apparatus for an internal-combustion engine including a valve lift characteristic control means for variable control of lift characteristics of an intake valve or an exhaust valve of an internal-combustion engine, and a deceleration intake control means for controlling the quantity of intake air to be supplied at the downstream side of an intake throttle valve during the decelerating operation of said internal-combustion engine, said intake air flow control apparatus comprising: an intake control characteristic change means for changing control characteristics of said deceleration intake control means in response to said value lift characteristic control.
Claim 3
Dependent Claim
36 words
An intake air flow control apparatus for an internal-combustion engine as claimed in claim 1, wherein the quantity of intake air to be controlled is set by said deceleration intake control means according to engine speeds.
Claim 4
Dependent Claim
39 words
An intake air flow control apparatus for an internal-combustion engine as claimed in claim 2, wherein, on the high-speed side, said intake control characteristic change means sets a less valve lift characteristics for low speed than for high speed.
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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) | 1993-10-29 | 1994-04-30 | 1994-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-29 | 1998-04-30 | 1998-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-29 | 2002-04-30 | 2002-10-30 | $7700.00 | Window Closed / Lapsed |