GB1375146A - - Google Patents
Info
- Publication number
- GB1375146A GB1375146A GB1135373A GB1135373A GB1375146A GB 1375146 A GB1375146 A GB 1375146A GB 1135373 A GB1135373 A GB 1135373A GB 1135373 A GB1135373 A GB 1135373A GB 1375146 A GB1375146 A GB 1375146A
- Authority
- GB
- United Kingdom
- Prior art keywords
- duration
- starter
- pulse train
- pulse
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007858 starting material Substances 0.000 abstract 8
- 230000007423 decrease Effects 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D41/00—Power installations for auxiliary purposes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Motor And Converter Starters (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
1375146 Engine turning gear. BENDIX CORP 8 March 1973 [9 March 1972] 11353/73 Heading F1K [Also in Division H2] A system for controlling the starter of an aircraft engine so as to de-energize the starter when the rotor thereof reaches a predetermined rotational speed comprises a permanent magnet generator 1 mechanically coupled to the starter rotor shaft to produce a pulse signal D 3 which is supplied to a bi-stable circuit 2 wherein is developed a pulse train each pulse of which has a duration Di which is a function of the starter rotor speed and which duration decreases as the speed of the rotor increases, the output pulse train from the bi-stable circuit 2 being fed both to a comparator 5 and a second pulse generating device 3, which device 3 generates a second pulse train each pulse of which has a constant duration D 2 corresponding to the starter rotor speed of which it is desired to de-energize the starter and the output from which device 3 is also supplied to the comparator 5, the comparator 5 producing an output signal when the duration D 1 of the first pulse train is greater than the duration D 2 of the second pulse train and no output signal when the duration D 1 is less than the duration D 2 , the output signal from the comparator 5 being supplied to an AND gate 9 together with a signal D 3 from the generator 1 such that the AND gate 9 produces an output signal when the duration D 1 of the first pulse train is greater than the duration D 2 of the second pulse train and the generator 1 is producing the signal D 3 to cause a switching device 6 to pass current from a panel source 7 to a starter energizing solenoid 8 but when the duration Di is less than the duration D 2 there is no output signal from the AND gate 9 whereupon the starter solenoid is de-energized. In a second embodiment the AND gate 9 is replaced by a second comparator. The circuit elements comprise a plurality of transistors, Zener diodes, a thyristor and various intergrated circuit units Fig. 4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00233196A US3812378A (en) | 1972-03-09 | 1972-03-09 | Aircraft starter control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1375146A true GB1375146A (en) | 1974-11-27 |
Family
ID=22876289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1135373A Expired GB1375146A (en) | 1972-03-09 | 1973-03-08 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3812378A (en) |
| DE (1) | DE2311274C3 (en) |
| FR (1) | FR2175479A5 (en) |
| GB (1) | GB1375146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142790A (en) * | 1983-06-01 | 1985-01-23 | Dresden Elektromotoren | Internal combustion engine starter motor control circuit |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490620A (en) * | 1983-09-12 | 1984-12-25 | Eaton Corporation | Engine starter protective and control module and system |
| DE4015885A1 (en) * | 1990-05-17 | 1991-11-21 | Bmw Rolls Royce Gmbh | STARTING DEVICE FOR STARTERS ON TURBINE ENGINES |
| US5237815A (en) * | 1991-02-19 | 1993-08-24 | Sundstrand Corporation | Control of a hydraulic start system |
| US6836086B1 (en) | 2002-03-08 | 2004-12-28 | Hamilton Sundstrand Corporation | Controlled starting system for a gas turbine engine |
| US7253535B2 (en) * | 2005-09-15 | 2007-08-07 | Hamilton Sundstrand Corporation | Electrical starter generator system for a gas turbine engine |
| US9845734B2 (en) * | 2011-04-20 | 2017-12-19 | Honeywell International Inc. | Air turbine start system with monopole starter air valve position |
| US10384791B2 (en) | 2016-07-21 | 2019-08-20 | United Technologies Corporation | Cross engine coordination during gas turbine engine motoring |
| US20180023479A1 (en) * | 2016-07-21 | 2018-01-25 | United Technologies Corporation | Air supply control during motoring of a gas turbine engine |
| US10618666B2 (en) | 2016-07-21 | 2020-04-14 | United Technologies Corporation | Pre-start motoring synchronization for multiple engines |
| US10221774B2 (en) | 2016-07-21 | 2019-03-05 | United Technologies Corporation | Speed control during motoring of a gas turbine engine |
| EP3273006B1 (en) | 2016-07-21 | 2019-07-03 | United Technologies Corporation | Alternating starter use during multi-engine motoring |
| EP3273016B1 (en) | 2016-07-21 | 2020-04-01 | United Technologies Corporation | Multi-engine coordination during gas turbine engine motoring |
| US10787968B2 (en) | 2016-09-30 | 2020-09-29 | Raytheon Technologies Corporation | Gas turbine engine motoring with starter air valve manual override |
| US10443543B2 (en) | 2016-11-04 | 2019-10-15 | United Technologies Corporation | High compressor build clearance reduction |
| US10823079B2 (en) | 2016-11-29 | 2020-11-03 | Raytheon Technologies Corporation | Metered orifice for motoring of a gas turbine engine |
-
1972
- 1972-03-09 US US00233196A patent/US3812378A/en not_active Expired - Lifetime
-
1973
- 1973-03-07 DE DE2311274A patent/DE2311274C3/en not_active Expired
- 1973-03-07 FR FR7308072A patent/FR2175479A5/fr not_active Expired
- 1973-03-08 GB GB1135373A patent/GB1375146A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142790A (en) * | 1983-06-01 | 1985-01-23 | Dresden Elektromotoren | Internal combustion engine starter motor control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| US3812378A (en) | 1974-05-21 |
| DE2311274A1 (en) | 1973-09-13 |
| FR2175479A5 (en) | 1973-10-19 |
| DE2311274B2 (en) | 1979-07-19 |
| DE2311274C3 (en) | 1980-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |