Friction-type clutch transient temperature measuring method and device based on six-parameter model

Abstract

The invention relates to a friction-type clutch transient temperature measuring method and a device based on a six-parameter model. By using the six-parameter model to replace a two-parameter model, iteration calculation of clutch transient temperature is carried out based on acquired real-time environmental temperature, starting temperature, and speed difference. In the six-parameter model, a temperature rising coefficient and a heat dissipation coefficient are replaced by a linear function adopting the environmental temperature and slipping friction power as variables. Compared with the prior art, the fact that the heat generated by the friction is related to the radius of the clutch is considered, and the acquired model is more accurate than the original model when being compared in theactual condition, and the linear relation between the model parameter of the used model (the temperature rising coefficient and the heat dissipation coefficient) and the environmental temperature andthe slipping friction power is found out, and is brought into the two-parameter model, and then the working condition of the improved model is better; compared with a four-parameter model, because ofadditional providing of constant terms, the completion of the model is compensated, and the accuracy is relatively high.

Description

technical field [0001] The invention relates to a method for measuring the transient temperature of a friction clutch, in particular to a method and device for measuring the transient temperature of a friction clutch based on a six-parameter model. Background technique [0002] The friction clutch is one of the important parts of the ship's propulsion shaft system. It uses the mechanical friction between the friction surfaces to transmit the torque from the driving shaft to the driven shaft, and can engage or disengage the main engine and the driven shaft according to the work needs. Take the DCT gearbox with the most friction clutches as an example. It is called a dual-clutch automatic transmission. It is composed of a gearbox and two sets of clutches. Its components are not much different from manual gearboxes. It has the advantages of high power transmission efficiency and good fuel economy of manual transmission and the advantages of smooth shifting of automatic transmis...

AI Technical Summary

Problems solved by technology

However, DCT gearboxes, especially dry DCTs, have the disadvantage of high temperature rise, so real-time temperature control of dry DCTs is an urgent problem to be solved

[0003] The existing transient temperature of the clutch can be calculated by the two-parameter model of the temperature field. The values ​​of the two parameters (temperature rise coefficient and heat dissipation coefficient) in the existing model change with the change of working conditions. Therefore, the finite element temperature calculation method is usually used, and there is Disadvantages such as large computing memory and slow speed

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