US5072701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically starting engines
Assignee: Individual
•
Filing: 1988-08-30
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Granted: 1991-12-17
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Expires: 2008-08-30
Abstract
Abstract Apparatus for automatically controlling the ready-to-drive condition while maintaining ready-to-start temperature of a single or multiple gas, gas-diesel or diesel engine in automobile uses a electronic circuit linked to various sensors including a temperature sensor, a vibration sensor, and a motion sensor. Signals generated by the temperature sensor are used for auto-reset and to turn the engine on and off based on predetermined maximum and minimum temperature. For multiple engines, sensor can be used to actuate a secondary engine if the primary engine reaches a predetermined maximum temperature and switch back to the primary engine when the engine temperature drops to a predetermined low temperature. For multiple engines, the vibration sensor output determines when control is switched from the primary engine to the secondary engine or vice versa, and also determines the engine cranking time for both multiple and single engines. Signal generated by the motion sensor are used to disable engine activity when accidental motion is detected of the automobile. Control means are provided for regulating several attempts at automatically starting the engine of an automobile with the engine parameters being changed each time. The starting mechanism is reset when the engine starts, and is disabled temporarily if a predetermined number of failed attempts to start have been made. Provision is also made for restarting the engine if stops running and if predefined motor conditions exist.
Inventors
- 👤 Rakib Khan
- 👤 Arif Khan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:49
CPC Classifications
F; F02; F02N; F02N11/00; F02N11/08; F02N11/0803; F02B; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06; F02N11/0848; F02N2200/00; F02N2200/02; F02N2200/023
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
250 words
Apparatus for maintaining at least one gas or diesel engine at a ready-to-start temperature under ready-to-drive conditions corresponding to a set of predefined engine parameters, the engine including starter means and fuel supply means, said apparatus comprising, means for sensing engine temperature and generating a corresponding first electrical signal indicative of the instantaneous temperature of said engine, means for sensing engine vibration or sound and generating a corresponding second electrical signal indicative of whether or not said engine is running, means for sensing engine motion and generating a corresponding third electrical signal indicative of movement of said engine from a stationary position, and control means for regulating the starting and stopping of said engine, said control means including means responsive to said first electrical signal for starting said engine, by activating said starter and fuel supply means, when the engine temperature drops below a predetermined temperature value, and for deactivating said fuel supply means to thereby stop said engine when the engine temperature moves above a predetermined temperature value, means for controlling said means for starting for providing a predetermined maximum number of successive attempts to start said engine if prior attempts to start said engine have failed, means responsive to said second electrical signal for changing predefined engine parameters including the activation time of said starter means, for each attempt to start said engine, means responsive to said third electrical signal for disabling said fuel supply means to stop said engine if a predetermined amount of motion is detected.
Claim 2
Dependent Claim
250 words
Apparatus for maintaining at least one gas or diesel engine at a ready-to-start temperature under ready-to-drive conditions corresponding to a set of predefined engine parameters, the engine including starter means and fuel supply means, said apparatus comprising, means for sensing engine temperature and generating a corresponding first electrical signal indicative of the instantaneous temperature of said engine, means for sensing engine vibration or sound and generating a corresponding second electrical signal indicative of whether or not said engine is running, means for sensing engine motion and generating a corresponding third electrical signal indicative of movement of said engine from a stationary position, and control means for regulating the starting and stopping of said engine, said control means including means responsive to said first electrical signal for starting said engine, by activating said starter and fuel supply means, when the engine temperature drops below a predetermined temperature value, and for deactivating said fuel supply means to thereby stop said engine when the engine temperature moves above a predetermined temperature value, means for controlling said means for starting for providing a predetermined maximum number of successive attempts to start said engine if prior attempts to start said engine have failed, means responsive to said second electrical signal for changing predefined engine parameters including the activation time of said starter means, for each attempt to start said engine, means responsive to said third electrical signal for disabling said fuel supply means to stop said engine if a predetermined amount of motion is detected.
Claim 3
Dependent Claim
36 words
The apparatus of claim 1 wherein said control means includes memory means for storing predefined engine parameters, including the maximum and minimum temperature values, and the maximum and current number of attempts at starting said engine.
Claim 4
Dependent Claim
23 words
The device according to claim 1 a clock is by passing the temperature logic to maintain the ready-to-drive condition while maintaining ready-to-start condition.
Claim 5
Dependent Claim
27 words
The device according to claim 1 includes a microphone that sense the engine sound and send the information to the circuit to determine the engine starting condition.
Claim 6
Dependent Claim
39 words
Device according to claim 1 also includes a built-in-motion sensor which does not require any mechanical or electrical signal going into the device, but it can stop the engine immediately when it senses any accidental motion of the vehicle.
Claim 7
Dependent Claim
37 words
Device according to claim 1 has a system to keep record of the number of trials has been made to start the engine and other internal records, based on those records, circuit decides the required cranking time.
Claim 8
Dependent Claim
29 words
According to claim 1 this system will be disabled by itself if all those trials fail to start the engine, and it enables itself when the engine runs again.
Claim 9
Dependent Claim
15 words
The apparatus of claim 1 wherein said temperature sensing means is a diode-based temperature sensor.
Claim 10
Dependent Claim
124 words
The apparatus according to claim 1 wherein said control means is adapted to control, in combination, the starting and stopping of a primary engine and a secondary engine in such a way as to ensure that at least one of said engines is kept running, said apparatus including means for sensing temperature, vibration or sound, and motion for each engine, wherein said control means includes means for starting said secondary engine if said primary engine fails to start after the predetermined maximum number of start attempts or if the predefined maximum temperature value has been reached for said primary engine, and means responsive to the primary engine temperature dropping below said minimum temperature value for stopping said secondary engine and restarting said primary engine.
Claim 11
Dependent Claim
41 words
The apparatus of claim 9 wherein said means for starting said secondary engine is also responsive to said means for providing a predetermined maximum number of start attempts and to said means for changing predefined engine parameters for each start attempt.
Claim 12
Dependent Claim
23 words
Device according to claim 1 uses feedback from primary and secondary engines where engine sound is being analyzed to determine engine starting condition.
References Cited (Backward Citations)
US1287266A
Cited
US1293569A
Cited
US2691110A
Cited
US3154689A
Cited
US3172400A
Cited
US4200080A
Cited
US4188931A
Cited
US4345554A
Cited
US4392059A
Cited
US4453506A
Cited
US4421075A
Cited
US4413595A
Cited
US4606307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-16 | 1995-06-17 | 1995-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-16 | 1999-06-17 | 1999-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-16 | 2003-06-17 | 2003-12-17 | $7700.00 | Window Closed / Lapsed |