Torque measuring device of small engine

Abstract

The invention discloses a torque measuring device of a small engine and belongs to the technical field of engine performance testing. The device comprises a propeller, an engine to be measured, connecting screw rods, a double-arm steel plate, support bearings, a support polish rod, a pressure sensor, a general support plate, a rack with a slide rail, a pressure plate, a steering engine and a tension meter, wherein the propeller, the engine to be measured, the connecting screw rods, the double-arm steel plate and the support polish rod form a cantilever system, the support bearings, the general support plate and the rack with the slide rail form a support system, and the cantilever system can rotate freely around the support polish rod. The device can relatively accurately measure a torque characteristic of a small power model airplane engine (power between 0.5kW and 15kW), which cannot be measured accurately by the common torquemeter, and can measure engine thrust at the same time.

Description

technical field [0001] The invention belongs to the technical field of engine performance testing. The invention relates to a device for measuring the torque-speed characteristic curve of a small model airplane engine, and tests the torque-speed for the small-power model airplane engine which cannot be accurately measured by a commonly used torque power tester. Background technique [0002] The basic measurement methods for engine torque or torque include energy conversion method, transfer method and balance force method. The energy conversion method measures the torque according to the law of energy conservation, and determines the magnitude of the measured torque by measuring other energy coefficients related to the torque; the transfer method is based on the change of the physical parameters (deformation, stress or Strain) to measure the torque; the balance force method is based on the fact that when the transmission shaft of the engine running at a constant speed output...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing torque measuring instruments are designed to measure the torque of engines with high power, and it is difficult to measure accurately for model aircraft engines with low power.

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