Numerical simulation of 2-stroke diesel engine for light aircraft

Pan, Zhongjian; He, Qinghua; Zhang, Xiangjian; Zhang, Daqing

doi:10.1109/maes.2014.140095

Cited by 11 publications

(5 citation statements)

References 10 publications

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“…Piston aero-engines are widely used as the core power unit of low-speed light aircraft because of their small size, light mass, low fuel consumption and high power-to-weight ratio, and their performance directly affects the operational safety and economic efficiency 1 . Ignition advance angle, as one of the main operating parameters of the engine, and refers to the angle at which the crankshaft turns from the ignition of the spark plug to the point at which the piston reaches the upper stop of compression, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission-based intelligent identification of piston aero-engine ignition advance angle anomalies

Yang,

Bi,

Lee

et al. 2023

Sci Rep

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Ignition advance angle is one of the important factors affecting the performance of the engine, when it occurs abnormally will make the engine power and economy worse, and even cause serious damage to the engine. Therefore, it is very necessary to recognize the abnormal ignition advance angle of the engine. However, the engine system is closed and has a complex structure, which makes traditional diagnostic methods difficult. This paper proposes an intelligent identification method based on acoustic emission (AE) signals, which collects the AE signals from the engine surface and divides their spectra into equal parts, and selects the frequency bands with high contribution to the classification based on the minimum distance method to construct feature maps, which is used as the input to the convolutional neural network (CNN). The extracted frequency band features of this method can better characterize the AE signals, and the constructed feature maps make the fault information more obvious. Experiments show that the accuracy of this method for abnormal ignition advance angle under normal operating conditions of piston aero-engine is 100%, which is better than the traditional methods. In addition, the recognition accuracies under the other two operating conditions are 99.75% and 98.5%, respectively, indicating that the method has a certain universality.

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Section: Introductionmentioning

confidence: 99%

Acoustic emission-based intelligent identification of piston aero-engine ignition advance angle anomalies

Yang,

Bi,

Lee

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The data show that the weight of the aircraft can be reduced by 1%, and the flight performance can be improved by 3%–5%. Therefore, reducing the weight of the engine block is the core problem of the R&D process (Pan et al , 2015; Carlucci et al , 2015). Some researchers began to study the development of aviation piston engines and engine life (Glowacki, 2018; Stojiljković et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Structural efficiency of block for aviation piston heavy fuel engine

Pan

Yang

2022

AEAT

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Purpose High reliability and high power-to-weight ratio are the technical difficulties in the development of aviation piston heavy fuel engines. This paper aims to provide a design evaluation method of the aero piston engine block, which can help R&D personnel quickly evaluate the performance of engine block, including effective bearing capacity and fatigue deformation, save a lot of experimental time and shorten the R&D cycle. Design/methodology/approach In this paper, structural efficiency is used to evaluate the reliability and durability of the engine block. Structural efficiency is a new evaluation method that lists its corresponding connotation according to different objects. In this paper, the function of the engine block in the engine is explained in detail, and three quantifiable connotations of the structural efficiency of the engine block are put forward. In the subsequent calculation, the calculation is carried out according to the three indexes, and the calculation results are used as the indexes to evaluate the performance of the engine block. Findings The structural efficiency evaluation method proposed in this paper can quickly and effectively evaluate the performance of the block from many aspects. Under the same boundary conditions, the two design schemes are simulated and analyzed, and the durability test is carried out. The analysis and experimental results show that Scheme 2 has good performance, which verifies the feasibility of the evaluation method. Originality/value This paper provides a method for rapid evaluation of engine block performance.

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“…Civil piston propeller aircraft are used for pilot training, rescue, private flight, etc. Pilots want to use an economical and available fuel [4,5]; all these have promoted the development of the aviation diesel engine. At present, a general aircraft mainly uses aviation gasoline engines, compression ignition aviation heavy fuel engines are used less, and there are very few reports on their research [6,7].…”

Section: Introductionmentioning

confidence: 99%

Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

Pan

Guo

2019

International Journal of Aerospace Engineering

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The combined piston can be used in an aero piston heavy fuel engine because of its light weight, so as to reduce the reciprocating inertia force and improve the engine power-weight ratio. However, the pin bore of the combined piston is prone to deform leading to the failure of the piston. Based on the structure of the piston, the stress of the piston under thermomechanical coupling is analyzed, the temperature field of the piston is determined by experiments, and the deformation rule of the piston pin bore under the thermomechanical coupling is summarized. A design scheme is proposed to change the position of the thread connection between the piston crown and the piston head. Under the same conditions, the deformation of the piston pin bore of the original scheme and the new scheme is analyzed. The results show that together with the changing of the connection thread between the piston crown and the piston head, the deformation of the piston pin bore decreases by 60 μm and the deformation of the piston pin bore is controlled. The test results show that the deformation of the pin bore is within the acceptable range, which proves the effectiveness of the improved scheme.

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Numerical simulation of 2-stroke diesel engine for light aircraft

Cited by 11 publications

References 10 publications

Acoustic emission-based intelligent identification of piston aero-engine ignition advance angle anomalies

Acoustic emission-based intelligent identification of piston aero-engine ignition advance angle anomalies

Structural efficiency of block for aviation piston heavy fuel engine

Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

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