Power measuring and calculating method of small piston engine

Abstract

The invention discloses a power measuring and calculating method for a small piston engine. The power measuring and calculating method comprises the steps of: S1, selecting a plurality of rotating speeds to carry out an engine bench test, and acquiring a changing curve of engine power along with accelerator opening degrees at a set rotating speed; S2, converting engine bench test data into enginestandard state data; and S3, converting the standard state data into used non-standard state data. By utilizing the power measuring and calculating method, the engine power of an unmanned helicopter in use is calculated, so as to guarantee the flight performance of the unmanned helicopter.

Description

technical field [0001] The invention relates to the field of engines, in particular to a method for measuring and calculating the power of a small piston engine. Background technique [0002] The engine is the "heart" of the helicopter, which has a great influence on the various characteristics of the helicopter, especially the flight performance. On manned helicopters, most helicopters are equipped with turboshaft engines. Engine manufacturers provide characteristic curves of engine power and fuel consumption at different altitudes and temperatures, including characteristic curves in the case of "deflation", and are Minimum guaranteed performance, helicopter designers can use it with confidence, without worrying about how much power the engine produces. [0003] Now, most unmanned helicopters are equipped with small piston engines. The manufacturers of these small piston engines generally only give three curves, namely, the curves of engine power, torque, and fuel consumpt...

AI Technical Summary

Problems solved by technology

In addition, the engine is installed on the helicopter, and its working conditions are also different from those of the test bench. For example, the air intake and exhaust systems are not as smooth as the test bench. Therefore, the data given by the manufacturer is inaccurate, which affects the performance of the unmanned helicopter.

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