Aerial piston engine preheating system

Abstract

The invention discloses an aerial piston engine preheating system. The aerial piston engine preheating system comprises a heater plug, a heater plug controller, an engine temperature sensor, an airplane wheel load sensor and an engine power supply detection module; the engine temperature sensor, the airplane wheel load sensor and the engine power supply detection module are correspondingly connected with an input end of the heater plug controller; an output end of the heater plug controller is connected with the heater plug; and the heater plug controller is used for controlling the work of the heater plug according to the received temperature, load and power supply state. The aerial piston engine preheating system disclosed by the invention has the advantages of realizing effective preheating, reducing influences caused by over-low temperature on start, increasing input conditions for starting the work of the system and the decision conditions for ending the work, realizing more rigorous and comprehensive logic of the system, also effectively reducing the mis-operation property and improving the safety and reliability of the system.

Description

technical field [0001] The invention relates to the field of aeroengines, in particular to an aero piston engine preheating system. Background technique [0002] Piston engines can be divided into compression ignition type and ignition type from the ignition mode. The compression ignition type is to perform work by compressing and igniting the mixture in the cylinder, and the ignition type is to ignite the mixture by means of an ignition device to perform work. 1. When starting the engine, due to the low temperature of the mixed gas, the work generated in the compression process overcomes the resistance process for a long time, and the heat loss is large, making it difficult to start. In addition, factors that affect the low-temperature starting of the compression engine include the increase in the viscosity of the lubricating oil, and the insufficient pre-lubrication of the friction surfaces, which increases the starting resistance of the engine. Common engine starting is ...

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Problems solved by technology

[0002] Piston engines can be divided into compression ignition type and ignition type from the ignition mode. The compression ignition type is to perform work by compressing and igniting the mixture in the cylinder, and the ignition type is to ignite the mixture by means of an ignition device to perform work. , When starting the engine, due to the low temperature of the mixed gas, the work generated in the compression process overcomes the resistance process for a long time, and the heat loss is large, making it difficult to start

In addition, the factors that affect the low-temperature starting of the compression engine are the increase of the viscosity of the lubricating oil, and the insufficient pre-lubrication of the friction surfaces, which increases the starting resistance of the engine.

Common engine starting is that the battery provides power to the starter, thereby driving the engine to rotate. When the ambient temperature is low, the performance of the battery will also decline, resulting in the inability to provide power to the starter for many times for a long time.

Affected by these three main factors, it is very difficult for a compression engine to start in a low temperature environment

[0003] At present, although the preheating system supporting the compression ignition piston engine can meet the low-temperature starting requirements of -30°C, the working logic of the preheating system is limited by the engine controller, and the work of the preheating system is not independent. The output control is an open-loop control, the conditions for triggering and ending the preheating system are relatively simple, the accuracy and stability are poor, and there is a problem of increasing the complexity of the engine controller when it is applied in the aviation field

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