Induction icing also can block the air intake to a carburetor. Starting a fuel-injected engine may involve an additional step or two, usually involving the priming process and correct position of the throttle and mixture controls. LAA/BMAA/BGA/BPA The sheer pleasure of flight. You have entered an incorrect email address! Residual heat can build up under the cowling, vaporizing fuel in the injector lines and preventing it from reaching the cylinders in sufficient quantity to start. Professional Pilot Training (includes ground studies), The Pacific: General Aviation & Questions, Safety, CRM, QA & Emergency Response Planning, Computer/Internet Issues & Troubleshooting, http://www.lycoming.textron.com/supp...pdfs/SB581.pdf. 0000002457 00000 n induction icing is a more comprehensive term which includes all types of fuel metering (fuel injection as well as carburation), ... aircraft that have fuel-injection systems. Write CSS OR LESS and hit save. The required induction systems also exist on a carbureted engine. Hi Get your engineers to also check the fuel return lines, and the tank vents, sounds like a fuel flow/blockage or air in system problem. However, carb/throttle body icing is more likely in warm, humid conditions than cold dry ones. 0000011618 00000 n 0000012540 00000 n Just like the icing that can build up on your wings, you can have ice Before I do go back, I'll certainly be reading up on how injection systems work - my old text books just show carburettors. If you are talking about icing in the tank, true. A manufacturer may specify a hot-start procedure. Fuel injection systems are more complicated than carburetors, and they can be expensive to maintain, replace or overhaul. Another major difference between carburetors and fuel injection systems is their susceptibility to icing. Sudden, unwanted quiet has greeted pilots who forgot about or misused the carb heat control. 0000047088 00000 n The message about the injector was passed on to me today, I haven't been back to the airfield to talk to the engineer in person. Priming And Hot Starts 0000004506 00000 n Induction icing consists of any ice accumulation that blocks the venturi, air filter, ducting, and/or fuel metering device. Ђ��!��v�j�ZT��a�c����ы� ��nN`�ŝ�m�쵅�α&���F�]^OT{��~�;V|i3�&��A��VM\b��R��rՊ�ag����k�T�Hl+O&������x%�x��&�==�;���7��I��` f9-| endstream endobj 138 0 obj 893 endobj 139 0 obj << /Filter /FlateDecode /Length 138 0 R >> stream 0000003711 00000 n 0000011389 00000 n At the end of the day, carburetors and fuel-injection systems perform the same tasks, just differently. H��V�n7���=��%�$=��5���C�g��|A�F�����f���`��!W$/�OKM7i��Y�ZH�(#Y��KK/���4��w˟�~����҇����'D������������Դ�[.~��駇�|~�-�h�i�~���Z snE�p�Z��>F;8x��i�+�J.1v�����iy}����������C��~��s������rvs��������8l��@mf�C�v�2��18�(��)�����t�.����:�}\~��0d�:\9L���j�}�֗��#�40����Iz�^�)�YS΍�0xC�wP��FMC%+k�]̀�4-�Ʈ95�]�.G�Dz�"�����e��eO�v ���FC�Y-ú�Р/4B(��U��=�(P�h�@��5sD���,�6 ��(o5@$+�UQ܈%W���_�_A� H���e��v�fB*�i8l)=�֭晟�]�NO�(M�G�{�\y:��5n;ќ�����Q�nd�p�Hj [��l-Z�����f5w^�+{(�Yג��hPV�B{ ��t���O4.�e��kp����Wic3�ի�`HȢy���S3��@M��*գ�]Gr*�&I������g��x�bX�����������1��'���@�i��2&�x��p���"wّ�O����)Re��(�I�9�%� 7 ����g)%X�G�< Park an airplane after a flight and the engine cowling no longer has cooling air flowing through it. 0000013614 00000 n When it doesn’t, pilots may be forced to experiment to find the right fuel/air mixture. A backup electrical pump often is required, which means additional weight, current draw and associated wiring. It now produces 260 hp, as used in the Comanche 260. By logging into your account, you agree to our. trailer << /Size 164 /Info 125 0 R /Root 128 0 R /Prev 559299 /ID[<66ae98698d3400c378a555ccd73b7c5f>] >> startxref 0 %%EOF 128 0 obj << /Type /Catalog /Pages 123 0 R /Outlines 121 0 R /Metadata 126 0 R >> endobj 162 0 obj << /S 882 /O 1065 /Filter /FlateDecode /Length 163 0 R >> stream 0000002209 00000 n I remember reading a report in GASIL many years ago about a partial engine failure in a fuel injected helicopter. Meanwhile, take the same basic engine and replace the carb with a fuel injection system. 0000002187 00000 n Carbureted engines usually don’t suffer from hot-start problems. A carb is relatively simple, light and easy to maintain, and it’s inexpensive. 0000046931 00000 n What’s going on between the fuel selector valve and the engine? But there’s no free lunch. A fuel-injection system uses an engine-driven pump to push fuel through a metering system, which then flows through an injector line to each cylinder. 0000009352 00000 n Excercise Alternate Air - SUDDEN LOSS OF ALL POWER! Do Not Sell My Personal Information -. 0000001091 00000 n Advertising - However, you can get induction icing, or a clogged filter. air Intake Icing, induction Icinganti-ice deice equipment information for use in aviation navigation and for learning and teaching instrument flying to obtain the instrument and certified flight instructor instrument ratings. I remember reading a report in GASIL many years ago about a partial engine failure in a fuel injected helicopter. Induction icing affecting a fuel-injected engine usually only forms when the airplane is operated in conditions conducive to airframe icing, a completely different situation. Terms of Service - Privacy Statement - Had someone put Mogas in [with 5% Ethanol] previously? Fuel injected engines, meanwhile, are largely immune to carb icing since there’s no carburetor (or a venturi to help atomize fuel, which is a source of the carb icing problem).

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