US4096843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting system
Assignee: Ethyl Corp
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Filing: 1975-09-19
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Granted: 1978-06-27
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Expires: 1995-09-19
Abstract
Abstract A system for improving the starting characteristics of an internal combustion engine is described. The system effects reduced exhaust emissions, especially for engines having thermal reactor and/or exhaust catalyst components. The system comprises a carburetor having throttle means operatively connected to first control means for simultaneously (1) opening said throttle means to obtain engine speed substantially higher than normal starting speed and (ii) retarding spark advance, on starting said engine, said means acting to maintain said engine speed and spark retard for a predetermined time after starting.
Inventors
- 👤 Frederick J. Marsee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:57
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/145; F02P5/155; F02P5/1558; F02D; F02D11/00; F02D11/06; F02D11/08; F02D37/00; F02D37/02; F02M; F02M3/00; F02M3/06; F02M3/07; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
207 words
A system for improving the warm-up characteristics on cold starting of a spark ignition internal combustion engine which comprises in combination (a) a distributor having at least a vacuum actuated spark advance means and a carburetor having throttle means operatively connected to first control means for simultaneously (i) opening said throttle means to obtain increased engine speed and (ii) retarding spark advance, on starting said engine, said first control means acting to maintain said engine speed and spark retard for a predetermined time after starting, said first control means comprising in combination (1) engine vacuum actuated throttle means position control means, (2) conduit means in communication at one end thereof with said throttle means position control means and said vacuum actuated spark advance means, and in communication at the other end with the atmosphere and with engine vacuum means, (3) valve means positioned in said other end of said conduit, said valve means operable to alternatively connect said conduit means to the atmosphere or to said engine vacuum means, (b) second control means, said second control means acting to lock out said first control means when a predetermined engine condition exists, whereby a substantial reduction in exhaust emissions is obtained for the cold start engine operating mode.
Claim 2
Independent Claim
207 words
A system for improving the warm-up characteristics on cold starting of a spark ignition internal combustion engine which comprises in combination (a) a distributor having at least a vacuum actuated spark advance means and a carburetor having throttle means operatively connected to first control means for simultaneously (i) opening said throttle means to obtain increased engine speed and (ii) retarding spark advance, on starting said engine, said first control means acting to maintain said engine speed and spark retard for a predetermined time after starting, said first control means comprising in combination (1) engine vacuum actuated throttle means position control means, (2) conduit means in communication at one end thereof with said throttle means position control means and said vacuum actuated spark advance means, and in communication at the other end with the atmosphere and with engine vacuum means, (3) valve means positioned in said other end of said conduit, said valve means operable to alternatively connect said conduit means to the atmosphere or to said engine vacuum means, (b) second control means, said second control means acting to lock out said first control means when a predetermined engine condition exists, whereby a substantial reduction in exhaust emissions is obtained for the cold start engine operating mode.
Claim 3
Dependent Claim
63 words
The system of claim 1 wherein said engine vacuum actuated throttle means position control means comprise a housing having a diaphragm therein, said diaphragm defining a chamber which is in communication with said one end of said conduit means and receives a vacuum signal from said engine vacuum means through said conduit, whereby said diaphragm is displaced in response to said vacuum signal.
Claim 4
Dependent Claim
58 words
The system of claim 2 wherein said diaphragm has an arm connected thereto and extending therefrom in a direction opposite from said chamber, said arm being operatively engageable with said throttle means to move said throttle means to a predetermined position upon movement of said diaphragm in response to the provision of a vacuum signal to said chamber.
Claim 5
Dependent Claim
14 words
The system of claim 3 wherein said first control means include choke modulation means.
Claim 6
Dependent Claim
81 words
The system of claim 4 wherein said choke modulation means comprise (i) choke vacuum control means operably connected to choke means for opening said choke means; and (ii) third vacuum actuated control means operably connected to said choke vacuum control means for providing a vacuum signal to said choke vacuum control means simultaneously with the provision of a vacuum signal to said first chamber, whereby said choke vacuum control means are thereby opened simultaneously with the opening of said throttle means.
Claim 7
Dependent Claim
12 words
The system of claim 1 wherein said engine condition is engine temperature.
Claim 8
Dependent Claim
74 words
The system of claim 3 wherein said first control means include a collar positioned on said arm exteriorly of said housing and biasing means operable between said collar and said housing for biasing said arm in a direction away from said housing, whereby said arm is displaced towards said throttle means and away from said housing to force said throttle means to a predetermined position when no vacuum signal is provided to said chamber.
Claim 9
Dependent Claim
27 words
The system of claim 1 wherein said first control means includes timer means for maintaining said engine speed and spark retard for a predetermined time after starting.
Claim 10
Dependent Claim
68 words
The system of claim 5 wherein said first control means includes (a) a distributor mechanical advance means, and (b) distributor mechanical advance means control means comprising switch means disposed on said housing and actuated by contact with said collar when said arm is displaced in a direction away from said throttle means and towards said housing in response to the provision of a vacuum signal to said chamber.
Claim 11
Independent Claim
194 words
A system for improving the warm-up characteristics on cold starting of a spark ignition internal combustion engine which comprises in combination (a) a distributor having at least a vacuum actuated spark advance means and a carburetor having throttle means operatively connected to first vacuum responsive actuating control means said first control means further chracterized as including (i) a distributor mechanical advance means, and (ii) distributor mechanical advance means control means comprising switch means disposed on housing means and actuated by contact with collar means when arm means are displaced in a direction away from said throttle means and towards said housing means in response to the provision of a vacuum signal to chamber means within said housing means for simultaneously opening said throttle means to obtain increased engine speed and retarding spark advance, on starting said engine, said first control means acting to maintain said engine speed and spark retard for a predetermined time after starting, (b) second control means, said second control means acting to lock out said first control means when a predetermined engine condition exists, whereby a substantial reduction in exhaust emissions is obtained for the cold start engine operating mode.
Claim 12
Independent Claim
194 words
A system for improving the warm-up characteristics on cold starting of a spark ignition internal combustion engine which comprises in combination (a) a distributor having at least a vacuum actuated spark advance means and a carburetor having throttle means operatively connected to first vacuum responsive actuating control means said first control means further chracterized as including (i) a distributor mechanical advance means, and (ii) distributor mechanical advance means control means comprising switch means disposed on housing means and actuated by contact with collar means when arm means are displaced in a direction away from said throttle means and towards said housing means in response to the provision of a vacuum signal to chamber means within said housing means for simultaneously opening said throttle means to obtain increased engine speed and retarding spark advance, on starting said engine, said first control means acting to maintain said engine speed and spark retard for a predetermined time after starting, (b) second control means, said second control means acting to lock out said first control means when a predetermined engine condition exists, whereby a substantial reduction in exhaust emissions is obtained for the cold start engine operating mode.
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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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |