GB597952A - Improvements in the governing of free piston internal combustion operated compressors or gas generators - Google Patents
Improvements in the governing of free piston internal combustion operated compressors or gas generatorsInfo
- Publication number
- GB597952A GB597952A GB1243345A GB1243345A GB597952A GB 597952 A GB597952 A GB 597952A GB 1243345 A GB1243345 A GB 1243345A GB 1243345 A GB1243345 A GB 1243345A GB 597952 A GB597952 A GB 597952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stroke
- fuel supply
- pressure
- air
- air inlet
- 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
- 238000002485 combustion reaction Methods 0.000 title 1
- 239000000446 fuel Substances 0.000 abstract 15
- 239000007789 gas Substances 0.000 abstract 4
- 230000001419 dependent Effects 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000006011 modification reaction Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000000750 progressive Effects 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C5/00—Gas-turbine plants characterised by the working fluid being generated by intermittent combustion
- F02C5/06—Gas-turbine plants characterised by the working fluid being generated by intermittent combustion the working fluid being generated in an internal-combustion gas generated of the positive-displacement type having essentially no mechanical power output
- F02C5/08—Gas-turbine plants characterised by the working fluid being generated by intermittent combustion the working fluid being generated in an internal-combustion gas generated of the positive-displacement type having essentially no mechanical power output the gas generator being of the free-piston type
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
597,952. Elastic-fluid turbines. ENGLISH ELECTRIC CO., Ltd., and WELSH, R. J. May 17, 1945, No. 12433. [Class 110 (iii)] [Also in Group XXVII] In the free piston gas generator shown (Fig. 1), a centrifugal governor 16 connected to an exhaust gas turbine 15 driven by exhaust gases from the exhaust pipe 12 of the generator controls an air inlet throttle 10 controlling the supply of air to the compressor cylinders. The reduction of the air pressure in the air inlet manifold caused by operation of the throttle valve is transmitted by a pipe 18 to a pressureresponsive device 19 which reduces the fuel supply by operating a control rack 28 of an engine fuel pump 29. The pressure-responsive device continues to reduce the fuel supply in step with a reduction in the pressure in the inlet manifold until a piston 34 of the pressureresponsive device comes up against a stop 26b. After the piston has reached the stop, further reduction in pressure in the air inlet has substantially no effect on the fuel supply. Further regulation is carried out by closing the throttle, the stroke being kept substantially constant by a device 22 responsive to the length of stroke. An increase of stroke reduces the fuel supply by operating the control rack 28. The device comprises a spring-pressed piston 23 supplied with air through a non-return valve 24 from the compressed air cushion 7a. A leak 22a is provided to enable air to escape from the working side of the piston. If the stroke increases, the pressure on the piston rises and moves the rod 26a so that it reduces the fuel supply and tends to return the stroke to normal. A modified stop is described which is spring pressed so that it can yield slightly under reduction of pressure in the inlet manifold and cause a slight reduction of the, fuel supply, but at a much lower rate than is the case prior to engagement with the stop. This is to reduce the tendency for the stroke of the pistons to increase during the second stage of regulation. In a modification, the centrifugal governor directly controls the fuel supply by operating the control rack 28 of the fuel pump. The air inlet throttle is operated by a device dependent on the stroke of the pistons similar to that previously described. In this arrangement during the first stage of operation, an inlet throttle valve is fully open and remains fully open until the governor has reduced the fuel supply to that value at which minimum length of stroke is obtained. After this, the device dependent on the stroke comes into action and closes the throttle valve, thus relieving the load on the compressor pistons and keeping the stroke substantially constant. A number of gas generators can be arranged to supply a single turbine and the throttle valve can be located in a single air supply pipe to a manifold common to the three generators or separate throttles for each generator can be operated by a single control. The operation of the throttle valve and the fuel supply need not be by means of a governor, but can be manual. A first member responsive to the pressure at the inlet to a compressor cylinder and a second member responsive to the maximum pressure in a cushion cylinder are coupled to a fuel supply control member, an air inlet throttle is operated by a governor of a prime mover in supply connection with the compressor or gas generator or by a manual member and the output is controlled in two stages by progressive closure of the air inlet throttle in the first stage, the length of stroke being progressively reduced to minimum stroke and the fuel supply being reduced by the first member and in the second stage the length of the stroke being kept substantially constant by throttling the air inlet and by the second member reducing the fuel supply. In a modification, the member responsive to maximum pressure in a cushion cylinder is coupled to the air inlet throttle, the manual member or governor is connected to the fuel supply member and the member responsive to the pressure at the inlet to a compressor cylinder is deleted. Specification 594,764, [Group XXVII], is referred to. Reference has been directed by the Comptroller to Specification 452,225.
Publications (1)
Publication Number | Publication Date |
---|---|
GB597952A true GB597952A (en) | 1948-02-06 |
Family
ID=1718391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1243345A Expired GB597952A (en) | 1945-05-17 | Improvements in the governing of free piston internal combustion operated compressors or gas generators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB597952A (en) |
-
1945
- 1945-05-17 GB GB1243345A patent/GB597952A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2780912A (en) | Method and apparatus for varying the final compression temperature in a four cycle internal combustion engine | |
GB1092113A (en) | Improvements in or relating to supercharging systems for internal-combustion engines | |
GB982047A (en) | Apparatus for controlling an exhaust driven super-charger for internal combustion engine | |
US2281987A (en) | Internal combustion engine and control apparatus | |
GB519806A (en) | Improvements in or relating to power units including apparatus for producing power gas and an expansion engine driven by such gas | |
US3324651A (en) | Turbocharged internal combustion engine | |
US2435970A (en) | Free piston engine pressure control means | |
US3143849A (en) | Internal combustion engines | |
US2705865A (en) | Method of operating gas turbines | |
US2036989A (en) | Internal combustion engine | |
US2567486A (en) | Power plant having means for automatically charging the engine with scavenging air | |
GB597952A (en) | Improvements in the governing of free piston internal combustion operated compressors or gas generators | |
US2415110A (en) | Power plant | |
US1428925A (en) | Supercharger for internal-combustion engines | |
US2884919A (en) | Fuel injection pumps for internal combustion engines | |
GB502758A (en) | Internal combustion free piston compressors | |
US2438134A (en) | Free piston engine | |
US2454073A (en) | Air compressing system | |
US2502127A (en) | Prime mover supplied by gas generators | |
US2636341A (en) | Air-bypass or surge control for supercharged internal-combustion engines | |
GB595627A (en) | Improvements in power plant comprising a prime mover and an internal combustion compressor supplying motive fluid thereto | |
GB737082A (en) | Improvements in free-piston compressors or gas generators | |
US2325032A (en) | Control device for scavenged, ignition-type engines | |
US2414166A (en) | Compressed air installation | |
US2434777A (en) | Power plant comprising a gas turbine and an internal-combustion engine compressor serving as a gas generator thereto |