Patent US3850154A successfully refreshed from Google Patents.
US3850154A
Expired / Lapsed
US
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Fuel control for externally ignited internal combustion engines
Assignee: Deutsche Vergaser GmbH and Co KG
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Filing: 1973-06-14
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Granted: 1974-11-26
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Expires: 1993-06-14
Abstract
Abstract A fuel control for externally ignited internal combustion engines, including a movable spatial ballistic cam dependent, in a first instance, on engine rotational speed, movements of which being adapted to be transmitted to a fuel calibrating installation, and with the spatial ballistic cam being displaceable along its longitudinal axis. The spatial ballistic cam is displaceable, in second dependence, pursuant to the difference of the operative pressure of the engine combustion air present in the zones upstream and downstream of the throttle valve, so as to rotate the spatial ballistic cam about its longitudinal axis.
Inventors
- 👤 A Chattopadhayay
- 👤 H Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:07
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/30; F02M69/36; F02M69/40; F02M69/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
Fuel control for externally ignited internal combustion engines, comprising; a movable spatial ballistic cam responsive, in a first instance, to engine rotational speed; fuel dosage means adapted to have movements of said cam communicated thereto, said cam being displaceable along its longitudinal axis; a throttle valve; means for rotating said cam about its longitudinal axis, in a second instance, dependent upon a differential pressure of the combustion air for said engines upstream and downstream of said throttle valve; a bypass passageway circumventing said throttle valve; and valve means in said passageway for directly regulating the pressure differential in dependence upon the temperature of said engine.
Claim 2
Dependent Claim
105 words
Fuel control for externally ignited internal combustion engines, comprising; a movable spatial ballistic cam responsive, in a first instance, to engine rotational speed; fuel dosage means adapted to have movements of said cam communicated thereto, said cam being displaceable along its longitudinal axis; a throttle valve; means for rotating said cam about its longitudinal axis, in a second instance, dependent upon a differential pressure of the combustion air for said engines upstream and downstream of said throttle valve; a bypass passageway circumventing said throttle valve; and valve means in said passageway for directly regulating the pressure differential in dependence upon the temperature of said engine.
Claim 3
Dependent Claim
45 words
Fuel control as claimed in claim 1, comprising a pneumatic servomotor; and conduit means communicating said pressure differential to said servomotor, said servomotor having movable portions operatively connected to said spatial ballistic cam so as to actuate the latter in response to said pressure differential.
Claim 4
Dependent Claim
18 words
Fuel control as claimed in claim 2, comprising an adjustable valve element being positioned in said conduit means.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |