US4979487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition controlling apparatus for multi-cylinder internal combustion engine
Assignee: Mitsubishi Electric Corp
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Filing: 1990-03-07
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Granted: 1990-12-25
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Expires: 2010-03-07
Abstract
Abstract An ignition controlling apparatus of a multi-cylinder internal combustion engine which distinguishes successively at least one cylinder to be ignited among plural cylinders of the internal combustion engine, distributes an ignition controlling signal switching on/off an ignition coil on the basis of successively distinguishing information, and stores and learns the distinguishing information, thereby being capable of distinguishing cylinders normally according to the stored and learned distinguishing information even when it is impossible to distinguish cylinders.
Inventors
- 👤 Wataru Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:13
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/145; F02P5/15; F02P15/00; F02P15/008; F02P7/00; F02P7/06; F02P7/077; F02P7/0775
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
An ignition controlling apparatus for a multicylinder internal combustion engine comprising: cylinder distinguishing means for distinguishing at least one cylinder related to a cylinder necessary to be ignited next among plural cylinders and for outputting successively distinguishing information indicating the distinguished cylinders; storing and learning means for storing successively the distinguishing information outputted from said cylinder distinguishing means, for estimating cylinders corresponding to said distinguishing information on the basis of the stored distinguishing information, and for outputting estimating information indicating the estimated cylinders; comparing means for comparing the estimating information with the distinguishing information; selecting means for selecting either the estimating information or the distinguishing information on the basis of the compared result; and distributing means for distributing an ignition controlling signal to the cylinder to be ignited next on the basis of the selected information.
Claim 2
Dependent Claim
136 words
An ignition controlling apparatus for a multicylinder internal combustion engine comprising: cylinder distinguishing means for distinguishing at least one cylinder related to a cylinder necessary to be ignited next among plural cylinders and for outputting successively distinguishing information indicating the distinguished cylinders; storing and learning means for storing successively the distinguishing information outputted from said cylinder distinguishing means, for estimating cylinders corresponding to said distinguishing information on the basis of the stored distinguishing information, and for outputting estimating information indicating the estimated cylinders; comparing means for comparing the estimating information with the distinguishing information; selecting means for selecting either the estimating information or the distinguishing information on the basis of the compared result; and distributing means for distributing an ignition controlling signal to the cylinder to be ignited next on the basis of the selected information.
Claim 3
Dependent Claim
50 words
An ignition controlling apparatus as set forth in claim 1, wherein said cylinder distinguishing means distinguishes the cylinders on the basis of the detected result of a rotation sensor which detects a rotational angle of said internal combustion engine according to a pulse signal generated by a predetermined rotational angle.
Claim 4
Dependent Claim
102 words
An ignition controlling apparatus as set forth in claim 2, wherein said cylinder distinguishing means has a first rotation sensor and a second rotation sensor which detect the rotational angle of said internal combustion engine according to first and second pulse signals, and distinguishes each cylinder by detecting the state of the second pulse signal outputted from said second rotation sensor whose phase is different from that of the first pulse signal outputted from said first rotation sensor at the timing of change of the first pulse signal which changes the state thereof according to the predetermined rotational angle of each cylinder.
Claim 5
Dependent Claim
35 words
An ignition controlling apparatus as set forth in claim 1, wherein said storing and learning means learns storing order of the stored distinguishing information, and outputs said estimating information according to the learned storing order.
Claim 6
Dependent Claim
31 words
An ignition controlling apparatus as set forth in claim 1, wherein said internal combustion engine is a four-cycle N-cylinder (N≧2: integer) engine, and has one ignition coil in every two cylinders.
Claim 7
Dependent Claim
44 words
An ignition controlling apparatus as set forth in claim 5, wherein, when said compared results do not coincide N/2 times successively, said selecting means selects the distinguishing information outputted from said cylinder distinguishing means and said storing and learning means clears the stored contents.
Claim 8
Dependent Claim
37 words
An ignition controlling apparatus as set forth in claim 6, wherein, when said compared results do not coincide 2/N-1 or fewer times successively, said selecting means selects the estimating information outputted from said storing and learning means.
Claim 9
Dependent Claim
29 words
An ignition controlling apparatus as set forth in claim 1, wherein said internal combustion engine is a four-cycle six-cylinder engine, and has one ignition coil in every two cylinders.
Claim 10
Dependent Claim
44 words
An ignition controlling apparatus as set forth in claim 8, wherein, when said compared results do not coincide three times successively, said selecting means selects the distinguishing information outputted from said cylinder distinguishing means and said storing and learning means clears the stored contents.
Claim 11
Dependent Claim
37 words
An ignition controlling apparatus as set forth in claim 9, wherein, when said compared results do not coincide two or fewer times successively, said selecting means selects the estimating information outputted from said storing and learning means.
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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) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |