US4957241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection device with air chamber
Assignee: Solex SA
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Filing: 1989-08-30
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Granted: 1990-09-18
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Expires: 2009-08-30
Abstract
Abstract A fuel injection device for an internal combustion engine comprises an electrically controlled injector having a body removably connected in a passage opening into an engine induction passage. The body has a nose of reduced diameter. A cap is fitted on the nose of the injector and formed with a fuel jet outlet opening. The cap and nose of the injector define an air chamber. Lateral openings of the cap communicate the air chamber with a space formed between the cap and the wall of the passage, connected to an air source. A spacer plate is retained between the cap and the nose and formed with a central calibrated hole surrounding an outlet of the injector for constituting a calibrated fuel and air jet outlet passage. The spacer plate is retained between the nose and the cap in a predetermined position.
Inventors
- 👤 Laboueffe Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:33
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M61/18; F02M61/1853; F02M61/14; F02M61/145; F02M69/00; F02M69/04; F02M69/042; F02M69/044; F02M69/047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
170 words
Injection device for an internal combustion engine, comprising an electrically controlled injector having a body provided with means for removably connecting said body in a passage opening into an engine induction passage and formed with a nose of reduced diameter and a cap fitted on the nose of the injector, formed with a fuel jet outlet opening, said cap being connected on the nose of the injector in such a position that it defines an air chamber with said nose and is formed with lateral openings communicating the air chamber with a space formed between the cap and the wall of said passage, said space being for connection to an air source, wherein said injection device further comprises a spacer plate retained between the cap and the nose, formed with a central calibrated hole surrounding an outlet of the injector for constituting a calibrated fuel-air jet outlet passage and wherein said spacer plate is provided with means for retaining it between the nose and the cap in a predetermined position.
Claim 2
Dependent Claim
170 words
Injection device for an internal combustion engine, comprising an electrically controlled injector having a body provided with means for removably connecting said body in a passage opening into an engine induction passage and formed with a nose of reduced diameter and a cap fitted on the nose of the injector, formed with a fuel jet outlet opening, said cap being connected on the nose of the injector in such a position that it defines an air chamber with said nose and is formed with lateral openings communicating the air chamber with a space formed between the cap and the wall of said passage, said space being for connection to an air source, wherein said injection device further comprises a spacer plate retained between the cap and the nose, formed with a central calibrated hole surrounding an outlet of the injector for constituting a calibrated fuel-air jet outlet passage and wherein said spacer plate is provided with means for retaining it between the nose and the cap in a predetermined position.
Claim 3
Dependent Claim
55 words
Device according to claim 1, wherein said spacer plate has a peripheral portion arranged for bearing on a bottom wall of the cap through an O-ring seal and a plurality of bosses arranged for bearing on the nose of the injector, which determines the distance between the bottom wall of the cap and the nose.
Claim 4
Dependent Claim
39 words
Device according to claim 1, wherein said space is annular in shape and is defined by the cap, the wall of the passage and O-ring seals bearing on the wall and respectively carried by the nose and the cap.
Claim 5
Dependent Claim
25 words
Device according to claim 1, wherein said cap has a radially inwardly directed circumferential rib arranged to snap into a peripheral groove of the nose.
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) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |