Patent US4387696A successfully refreshed from Google Patents.
US4387696A
Expired / Lapsed
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Electromagnetically controlled fuel injection system
Assignee: Aisin Corp
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Filing: 1982-03-09
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Granted: 1983-06-14
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Expires: 2002-03-09
Abstract
Abstract An electromagnetically controlled fuel injection system which includes a mechanism for sensing a plurality of operating conditions of a combustion engine and for generating a plurality of electric signals corresponding to the conditions, an electrical control unit receiving the first electric signals to thereby generate a second electric signal in response thereto, an electromagnetically controlled fuel injection valve mechanism controlled by the second signal from the electrical control unit and having a fuel injection port formed therein and an electromechanically controlled air supply valve mechanism provided with an air supply port around the fuel injection port of the fuel injection valve and controlled by the second signal from the electric control unit.
Inventors
- 👤 Kenji Yogo
- 👤 Isshi Nomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:25
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0664; F02M51/02; F02M51/0667; F02M51/08; F02M69/00; F02M69/04; F02M69/047; F02M69/30; F02M69/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
An electromagnetically controlled fuel injection system, comprising: means for sensing a plurality of operating conditions of a combustion engine and for generating a plurality of electric signals corresponding to said conditions; an electrical control unit receiving said first electric signals to thereby generate a second electric signal in response thereto; electromagnetically controlled fuel injection valve means controlled by said second signal from said electrical control unit and having a fuel injection port; and electromagnetically controlled air supply valve means provided with an air supply port around said fuel injection port of said fuel injection valve means and controlled by said second signal from said electric control unit.
Claim 2
Dependent Claim
107 words
An electromagnetically controlled fuel injection system, comprising: means for sensing a plurality of operating conditions of a combustion engine and for generating a plurality of electric signals corresponding to said conditions; an electrical control unit receiving said first electric signals to thereby generate a second electric signal in response thereto; electromagnetically controlled fuel injection valve means controlled by said second signal from said electrical control unit and having a fuel injection port; and electromagnetically controlled air supply valve means provided with an air supply port around said fuel injection port of said fuel injection valve means and controlled by said second signal from said electric control unit.
Claim 3
Dependent Claim
75 words
An electromagnetically controlled fuel injection system as set forth in claim 1, further comprising an electromagnetic coil connected to said electrical control unit, a bobbin, and a fixed core member disposed within said coil and said bobbin wherein said fuel injection valve means and said air supply valve means each further comprises a movable core member and corresponding valve seat such that each of said movable core members are operatively associated with said fixed core.
Claim 4
Dependent Claim
53 words
An electromagnetically controlled fuel injection system as set forth in claim 2, further comprising biasing means interposed between said fixed core and each of said movable cores for biasing each of said movable cores in a direction so as to contact said corresponding valve seats upon discontinuation of generation of said second signal.
Claim 5
Dependent Claim
43 words
An electromagnetically controlled fuel injection system as set forth in claim 3, further comprising a non-magnetic material member interposed between each of said movable cores and said fixed core for insulating said movable cores from said fixed core, said bobbin and said coil.
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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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |