US3943892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector
Assignee: TUBANTOR BV
•
Filing: 1974-03-19
•
Granted: 1976-03-16
•
Expires: 1994-03-19
Abstract
Abstract An injector for delivering fuel to at least one atomizer of a combustion engine comprises at least one pump communicating with the atomizer and control-means depending upon the pressure in the inlet manifold of the combustion engine for regulating the quantity of fuel to be atomized by the atomizer. The invention has for its object to avoid, in the decelerating state of the combustion engine, environmentally polluting constituents in the exhaust gases of the combustion engine and to prevent spoiling of fuel. This is achieved by providing the control-means with a switch for stopping the pump when the pressure in the inlet manifold drops below a given value. Soon after the decelerating state of the combustion engine is realized, this injector does no longer supply any fuel.
Inventors
- 👤 Willem Brinkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:11
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/28; F02D; F02D1/00; F02D1/02; F02D1/06; F02D1/065; F02M51/00; F02M51/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
146 words
In combination with an internal combustion engine provided with a fuel atomizer having a pressure-responsive outlet valve; electrically actuated pump means for discharging fuel at intermittent intervals and at increasing volumetric rate during each such interval; control means for varying the quantity of fuel discharged by said pump means during said intervals in accord with operating conditions of the engine; conduit means connecting said pump means to said atomizer for directing fuel discharged by said pump means to said atomizer, said conduit means having finite volumetric capacity whereby at some minimum value of the quantity of fuel discharged by said pump means as controlled by said control means said atomizer can no longer adequately atomize the discharged fuel; and switch means actuated in consonance with said control means for deenergizing said pump means when said pump means would otherwise discharge said minimum value quantity of fuel.
Claim 2
Dependent Claim
146 words
In combination with an internal combustion engine provided with a fuel atomizer having a pressure-responsive outlet valve; electrically actuated pump means for discharging fuel at intermittent intervals and at increasing volumetric rate during each such interval; control means for varying the quantity of fuel discharged by said pump means during said intervals in accord with operating conditions of the engine; conduit means connecting said pump means to said atomizer for directing fuel discharged by said pump means to said atomizer, said conduit means having finite volumetric capacity whereby at some minimum value of the quantity of fuel discharged by said pump means as controlled by said control means said atomizer can no longer adequately atomize the discharged fuel; and switch means actuated in consonance with said control means for deenergizing said pump means when said pump means would otherwise discharge said minimum value quantity of fuel.
Claim 3
Dependent Claim
47 words
In the combination defined in claim 1 wherein said control means includes an adjustable stop and a vacuum-controlled member connected to said stop, said engine having an air intake manifold and said vacuum-controlled member is connected to said manifold for actuation in response to pressure fluctuations therein.
Claim 4
Dependent Claim
17 words
In the combination defined in claim 2 wherein said switch means is actuated by said vacuum-controlled member.
Claim 5
Dependent Claim
25 words
In the combination defined in claim 3 wherein said vacuum-controlled member is in the form of a piston/cylinder assembly, the piston of which is barrel-shaped.
Claim 6
Dependent Claim
17 words
In the combination defined in claim 4 wherein said stop is in the form of a wedge.
Claim 7
Dependent Claim
25 words
In the combination defined in claim 2 wherein said vacuum-controlled member is in the form of a piston/cylinder assembly, the piston of which is barrel-shaped.
Claim 8
Dependent Claim
17 words
In the combination defined in claim 6 wherein said stop is in the form of a wedge.
Claim 9
Dependent Claim
54 words
In the combination defined in claim 1 wherein said pump means includes a variable volume fluid chamber and a movable member for varying the volume of said chamber, an armature connected to said movable member, and a pair of electromagnets disposed on opposite sides of said armature, and means for alternately energizing said electromagnets.
Claim 10
Dependent Claim
47 words
In the combination defined in claim 8 wherein said control means includes an adjustable stop and a vacuum-controlled member connected to said stop, said engine having an air intake manifold and said vacuum-controlled member is connected to said manifold for actuation in response to pressure fluctuations therein.
Claim 11
Dependent Claim
17 words
In the combination defined in claim 9 wherein said switch means is actuated by said vacuum-controlled member.
Claim 12
Dependent Claim
25 words
In the combination defined in claim 10 wherein said vacuum-controlled member is in the form of a piston/cylinder assembly, the piston of which is barrel-shaped.
Claim 13
Dependent Claim
17 words
In the combination defined in claim 11 wherein said stop is in the form of a wedge.
Claim 14
Dependent Claim
25 words
In the combination defined in claim 9 wherein said vacuum-controlled member is in the form of a piston/cylinder assembly, the piston of which is barrel-shaped.
Claim 15
Dependent Claim
17 words
In the combination defined in claim 13 wherein said stop is in the form of a wedge.
Claim 16
Dependent Claim
77 words
In the combination defined in claim 8 wherein said control means comprises a pair of stops disposed on opposite sides of said armature, one of said stops being in the form of a wedge and being axially movable, said engine having an air intake manifold and said control means being in the form of a piston/cylinder assembly connected to said intake manifold for actuation thereby and said piston being connected to said wedge axially to move same.
Claim 17
Dependent Claim
17 words
In the combination as defined in claim 15 wherein said switch means is actuated by said piston.
Claim 18
Dependent Claim
12 words
In the combination defined in claim 16 wherein said piston is barrel-shaped.
References Cited (Backward Citations)
US1662040A
Cited
US1956923A
Cited
US1897044A
Cited
US2893366A
Cited
US2852011A
Cited
US3822678A
Cited
US3463130A
Cited
US3612013A
Cited
US3797235A
Cited
US3809028A
Cited
US3794003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |