Patent US5333585A successfully refreshed from Google Patents.
US5333585A
Expired / Lapsed
US
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Control device for idle rotation of engine
Assignee: Mitsubishi Electric Corp
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Filing: 1993-03-17
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Granted: 1994-08-02
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Expires: 2013-03-17
Abstract
Abstract An apparatus for controlling idle revolutions of an engine which comprises a controlling member to control an idle revolution changing member so as to adjust the idle revolutions detected by the engine revolution detector to a predetermined number of idle revolutions, in which the controlling member fixes the idle revolution changing member to a predetermined condition during misfiring of the engine detected by a misfire detecting member. Therefore, hunting of the engine can be prevented, and a better riding is thus ensured.
Inventors
- 👤 Toshiki Kuroda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:35
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/14; F02D41/16; F02P; F02P5/00; F02P5/04; F02P5/145; F02P5/15; F02P5/1502; F02P5/1508; G; G01; G01M; G01M15/00; G01M15/04; G01M15/11; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
An apparatus for controlling idle revolutions of an engine, comprising: means for detecting a number of revolutions of said engine; means for adjusting idle revolutions of said engine; means for detecting a misfire of said engine; and means for controlling said adjusting means to adjust the idle revolutions detected by said engine revolution detecting means to a predetermined number of idle revolutions, wherein said controlling means fixes said adjusting means to a predetermined condition during a misfire condition of said engine detected by said misfire detecting means.
Claim 2
Independent Claim
87 words
An apparatus for controlling idle revolutions of an engine, comprising: means for detecting a number of revolutions of said engine; means for adjusting idle revolutions of said engine; means for detecting a misfire of said engine; and means for controlling said adjusting means to adjust the idle revolutions detected by said engine revolution detecting means to a predetermined number of idle revolutions, wherein said controlling means fixes said adjusting means to a predetermined condition during a misfire condition of said engine detected by said misfire detecting means.
Claim 3
Dependent Claim
40 words
An apparatus according to claim 1, wherein said misfire detecting means determines the misfire condition of said engine when a deviation of said number of the revolutions of said engine detected by said revolution detecting means exceeds a predetermined level.
Claim 4
Dependent Claim
16 words
An apparatus according to claim 1, wherein said revolution detecting means includes crank angle detecting means.
Claim 5
Dependent Claim
34 words
An apparatus according to claim 1, further comprising a bypass air passage bypassing a throttle valve of said engine, wherein said adjusting means changes an amount of air flowing through said bypass air passage.
Claim 6
Dependent Claim
17 words
An apparatus according to claim 1, wherein said adjusting means changes an ignition timing of said engine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |