Engine piston temperature field telemetry system calibration test bench

Abstract

The invention relates to an engine piston temperature field remote measurement system calibration testing stand comprising a simulation device, a driving mechanism, a remote measurement system, a heater and a temperature controller; the simulation device comprises a cylinder sleeve, a cylinder cap and a piston; the driving mechanism drives the piston to move up and down in the cylinder sleeve; theremote measurement system comprises a thermocouple sensor, an emitter, an induction stator, a remote measurement system cabinet and a temperature field signal analysis system; the heater comprises anon-contact annular heating tube and a high frequency heating unit; the temperature controller comprises a first infrared probe and a temperature control unit. The driving mechanism replaces an enginecrank link mechanism to drive the piston to make up-and-down motions, thus simulating real relative motion conditions, and providing a relative motion and installation environment for the piston temperature field remote measurement system; the high frequency induction heater and the infrared temperature controller can simulate a real engine temperature change scope, thus calibrating the measuringprecision of the remote measurement system, and verifying the sealing and anti-scurviness environment capability (such as high temperature) of the system.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to a calibration test bench for an engine piston temperature field remote measurement system. Background technique [0002] The temperature field test of the engine piston is one of the important test contents of the engine approval test. High volume power and high reliability are one of the main objectives of the engine development and design. The temperature field test of the main moving parts of the engine piston is an important part of the independent research and development of the engine. , CAE and CAM are important links, and it is also an important basis for verifying whether the engine meets the design index requirements and evaluating whether the component operates reliably under the design working conditions. At the same time, in the entire engine R&D and manufacturing, the resources required for testing can be reduced, and the R&D cycle and human resource investme...

AI Technical Summary

Problems solved by technology

[0003] Piston temperature field tests mainly include hardness plug method, fusible alloy method, linkage transmission mechanism method, thin film sensor method and wireless telemetry method, etc. Among them, the infinite telemetry method has the advantages of simple installation, convenient signal transmission and real-time online testing. The temperature field is an important test method. However, there are external environmental factors such as other electromagnetic signals, oil mist, and high temperature during the test. These factors may have a certain impact on the test accuracy of the telemetry system. It is necessary to analyze the external factors that affect the telemetry system. Simultaneously calibrate the accuracy of the telemetry system

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