Acceleration method and acceleration system for propeller engine

A propeller and engine technology, applied in the field of propeller engine acceleration and acceleration system, can solve the problems of long acceleration time and inability to meet the requirements of engine acceleration, and achieve the effect of good control, shortening acceleration time and speeding up.

Active Publication Date: 2013-02-13
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the existing control method and control system, when the engine accelerates from a small state to a large state, the acceleration time is long, which cannot meet the acceleration requirements of the aircraft for the engine

Method used

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  • Acceleration method and acceleration system for propeller engine
  • Acceleration method and acceleration system for propeller engine
  • Acceleration method and acceleration system for propeller engine

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Embodiment Construction

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0023] see figure 1 , The preferred embodiment of the present invention also provides a method for accelerating the propeller engine, which is used to increase the acceleration speed of the propeller engine. It includes the following steps, the collection step: collecting the atmospheric pressure P H , Atmospheric temperature t H * , flight Mach number M, throttle angle α 油门 and the actual speed of the engine n; calculation steps: according to the collected atmospheric pressure P H , Atmospheric temperature t H * , flight Mach number M, throttle angle α 油门 Get the given fuel flow G 燃油 ;According to the actual engine speed n and the rated engine speed n at the previous moment for a given propeller blade angle βn 额定 The difference, the thrott...

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Abstract

The invention provides an acceleration method for a propeller engine. The acceleration method comprises the following steps: an acquiring step: acquiring the atmospheric pressure PH, the atmospheric temperature tH*, a flight Mach number M, an accelerator angle alpha and an actual rotating speed n of the engine; calculating step: obtaining a given fuel flow G of fuel and a given propeller blade angle beta n of the propeller according to the acquired data; converting step: converting the given fuel flow G of the fuel into a fuel flow electric signal and converting the fuel flow electric signal into a corresponding fuel flow hydraulic signal; converting the given propeller blade angle beta n of the propeller into a propeller blade angle electric signal and converting the propeller blade angle electric signal into the corresponding propeller blade angle hydraulic signal; a control step: controlling the power of the engine according to the fuel flow hydraulic signal; and controlling the rotating speed of the engine according to the propeller blade angle hydraulic signal. The invention also provides an acceleration system for the propeller engine. The acceleration system comprises an acquisition device, a control device, a fuel metering unit and a propeller blade angle control unit.

Description

technical field [0001] The invention relates to the field of propeller engines, in particular, to an acceleration method for a propeller engine. In addition, the present invention also relates to an acceleration system using the above propeller engine acceleration method. Background technique [0002] At present, the control system of the existing single-rotor turboprop engine adopts a hydraulic-mechanical control system, and the control system is mainly composed of a mechanical-hydraulic fuel regulator and a governor. The engine adopts the law of constant speed control. There is no cross-link between the fuel regulator and the governor in the control mode. When the engine accelerates from a small state to a large state, first push the throttle lever, and the fuel regulator will feel the change of the throttle angle. The change controls the increase of fuel, and then the engine speed rises. The governor feels the speed rise and then controls the propeller to increase the pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C9/58
Inventor 李琼盛柏林刘献平周娇君方春娇
Owner CHINA HANGFA SOUTH IND CO LTD
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