Electrical starting system of turboprop engine
A turbo propeller and engine starting technology, which is applied in the direction of engine starting, turbine/propulsion device starting, engine ignition, etc., can solve problems such as engine failure shutdown, excessive current difference, and low control signal accuracy, so as to ensure normal operation , Reduce operational complexity and avoid parking
Pending Publication Date: 2021-04-02
中航通飞华南飞机工业有限公司
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Problems solved by technology
[0006] The invention provides an electric starting system for a turboprop engine, which can solve the problems of serious electromagnetic interference of the automatic timer and low precision of the control signal, and solve the difficulty of oil cutting operation during the starting process of the crew and the instantaneous left, The problem of engine failure and shutdown caused by excessive right current difference
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Embodiment Construction
[0053] The technical solution provided by the present invention will be explained in detail below in conjunction with the accompanying drawings.
[0054] figure 1 It is a structural schematic diagram of an embodiment of the turboprop engine starting system provided by the present invention, such as figure 1 As shown, the embodiment of the present invention provides a turboprop engine starting system, including: starting bus bar 101, starting inspection relay 102, starting box 103, left starter 104, right starter 105, starting relay box 106, engine accessories 107 , automatic oil cut and over-temperature protector 108, automatic timer 109;
[0055] The starting bus bar 101 is used to receive the starting power provided by the ground power supply vehicle 1, and transmit the starting power to the starting inspection relay 102 in two ways;
[0056] The starting check relay 102 is used to detect the current difference between the two starting power sources transmitted by the star...
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The invention provides an electric starting system of a turboprop engine. The electric starting system comprises a starting relay box (106), an engine accessory (107) and an automatic oil cutting andover-temperature protector (108); the starting relay box (106) is used for delaying disconnection of a starting control circuit and stopping of the engine when receiving a starting fault signal sent by a starting check relay (102); the automatic oil cutting and over-temperature protector (108) is used for sending an oil cutting instruction to a starting oil cutting electromagnetic valve in the engine accessory (107) according to the rotating speed of the engine, the exhaust temperature and the atmospheric temperature, limiting the oil supply amount in the starting process of the engine and achieving the automatic oil cutting function in the starting process of the engine, so that the exhaust temperature is not over-temperature; and when the rotating speed of the engine does not reach the preset rotating speed within the specified time or the exhaust temperature exceeds the temperature, the engine is controlled to stop. Automatic oil cutting can be achieved, manual oil cutting operationcan be compatible, and unnecessary stopping in the starting process of the engine can be avoided.
Description
technical field [0001] The invention belongs to the field of engine starting systems, and in particular relates to an electric starting system of a turboprop engine. Background technique [0002] As a key subsystem in the engine system, the engine starting system controls the engine ignition and fuel in a timely manner and provides sufficient starting power for the engine so that the engine can get a sufficient starting speed. The control of the ignition and fuel supply system is to ensure that the engine is ignited and supplied with fuel at the appropriate time and speed, so that the engine can start independently; speed and shorten the starting time. [0003] Currently common engine starting methods include air turbine starting, electric starting and other starting methods. Among them, the electric starting system is widely used in starting various types of turbojet engines and turboprop engines, because the starting work of the system is easy to automate, reliable in us...
Claims
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Login to View More IPC IPC(8): F02C7/26F02C7/275F02C7/00
CPCF02C7/00F02C7/26F02C7/275
Inventor 史飞邹勇孙瑶李蓉张奕
Owner 中航通飞华南飞机工业有限公司