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Friction type clutch transient temperature calculation method based on environment temperature coefficient

A technology of ambient temperature and transient temperature, applied in computing, computer-aided design, instruments, etc., can solve the problems of large computing memory, slow speed, temperature rise, etc., and achieve improved computing accuracy, improved applicability, and adaptability to working conditions Good results

Inactive Publication Date: 2019-08-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Friction type clutch transient temperature calculation method based on environment temperature coefficient
  • Friction type clutch transient temperature calculation method based on environment temperature coefficient
  • Friction type clutch transient temperature calculation method based on environment temperature coefficient

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Embodiment

[0023] This embodiment provides an improved two-parameter model for more accurately describing the temperature field of the friction clutch, which has higher precision, stronger ability to adapt to working conditions, and quick response. It can be used in the precise temperature calculation of the clutch and the related adjustment of the control strategy. The process includes:

[0024] 1) Identify the parameters of a fixed type of clutch at a specific ambient temperature, and obtain the model fixed parameter c 1 、c 2 , and then the definite iterative formula of the improved two-parameter temperature model is obtained.

[0025] 2) Add this model to the clutch temperature control strategy, and use the determined iterative formula obtained in 1) to calculate the temperature of the main body of the clutch according to the real-time ambient temperature, initial temperature, and speed difference measured by the sensor. The control strategy performs necessary operations such as co...

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Abstract

The invention relates to a friction type clutch transient temperature calculation method based on an environment temperature coefficient. The method is characterized in that an improved two-parametermodel is adopted; iterative calculation is carried out on the clutch transient temperature; in the improved two-parameter model, the temperature rise coefficient is replaced by the product of the environment temperature and the first proportionality coefficient, the heat dissipation coefficient is replaced by the product of the environment temperature and the second proportionality coefficient, the first proportionality coefficient represents the relation between the temperature rise coefficient and the environment temperature, and the second proportionality coefficient represents the relationbetween the heat dissipation coefficient and the environment temperature. Compared with the prior art, the method has the advantages of higher precision, stronger working condition adaptability, quick response and the like.

Description

technical field [0001] The invention relates to a method for calculating the transient temperature of a friction clutch, in particular to a method for calculating the transient temperature of a friction clutch based on an ambient temperature coefficient. 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 tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 陈俐邱之阳郑鹏飞
Owner SHANGHAI JIAO TONG UNIV
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