US3756213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine of the fuel injection type
Assignee: Honda Motor Co Ltd
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Filing: 1971-08-18
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Granted: 1973-09-04
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Expires: 1991-08-18
Abstract
Abstract An internal combustion engine of the fuel injection type having a main fuel injection nozzle for normal running of the engine, a starting fuel injection nozzle for starting or warming up of the engine, means for adjusting the amount of fuel injected with said main nozzle respondingly to negative pressure in the interior of an intake pipe downstream of a throttle valve, means for increasing fastly the amount of fuel injected with said main nozzle independently of said means for adjusting the amount of fuel and allowing to inject supplementary fuel with said starting fuel injection nozzle in low temperature condition of the engine, means for adjusting continuously the amount of the supplementary fuel manually or automatically with the operation of a temperature sensitive member settled on a proper portion of the engine.
Inventors
- 👤 K Miyaki
- 👤 T Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0261; F02D2700/0266
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
In an internal combustion engine of the fuel injection type, fuel injection means comprising: an air intake pipe; a main fuel injection nozzle communicating with said pipe and injecting fuel for normal running of said engine; a starting fuel injection nozzle communicating with said pipe and injecting fuel for starting and warming up of said engine; a fuel tank for supplying fuel to said injection nozzles; conduit means interconnecting said fuel tank and said main fuel injection nozzle; an electromotive fuel feed pump being positioned in said conduit proximate to said fuel tank; a fuel injection pump being positioned in said conduit proximate to said main injection nozzle; an excess-fuel branch conduit connected to said conduit means intermediate said fuel feed pump and said fuel injection pump, said branch conduit leading to said fuel tank; engine starting fuel supply conduit means being connected to said branch conduit and said starting fuel injection nozzle; fuel-flow control valve means being positioned in said branch conduit for controlling the flow rate of fuel therethrough; and normallyclosed valve means interposed in said starting fuel supply conduit means adapted to be biased into an open fuel-flow position in response to starting of said Engine.
Claim 2
Dependent Claim
199 words
In an internal combustion engine of the fuel injection type, fuel injection means comprising: an air intake pipe; a main fuel injection nozzle communicating with said pipe and injecting fuel for normal running of said engine; a starting fuel injection nozzle communicating with said pipe and injecting fuel for starting and warming up of said engine; a fuel tank for supplying fuel to said injection nozzles; conduit means interconnecting said fuel tank and said main fuel injection nozzle; an electromotive fuel feed pump being positioned in said conduit proximate to said fuel tank; a fuel injection pump being positioned in said conduit proximate to said main injection nozzle; an excess-fuel branch conduit connected to said conduit means intermediate said fuel feed pump and said fuel injection pump, said branch conduit leading to said fuel tank; engine starting fuel supply conduit means being connected to said branch conduit and said starting fuel injection nozzle; fuel-flow control valve means being positioned in said branch conduit for controlling the flow rate of fuel therethrough; and normallyclosed valve means interposed in said starting fuel supply conduit means adapted to be biased into an open fuel-flow position in response to starting of said Engine.
Claim 3
Dependent Claim
15 words
Fuel injection means as claimed in claim 1, said fuel-flow control valve being manually adjustable.
Claim 4
Dependent Claim
54 words
Fuel injection means as claimed in claim 1, comprising temperature sensing means on said engine; and means for adjusting said fuel-flow control valve for varying the flow sets of fuel to said starting fuel injection nozzle in response to sensed low temperature conditions of said engine upon starting and during warming-up of said engine.
References Cited (Backward Citations)
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |