Patent ID: 8224537
Filing Date: 2012-07-17
Classification: F16D,F16H,Y10T

Abstract:
1. A clutch temperature prediction module for a dual clutch transmission (DCT), the clutch temperature prediction module comprising: at least one clutch slip power module that determines a first clutch slip power of a first clutch and a second clutch slip power of a second clutch; and a temperature calculation module that receives the first clutch slip power, the second clutch slip power, an ambient air temperature, an engine oil temperature, and a transmission oil temperature, and that calculates at least one clutch plate temperature and a clutch housing temperature based on the first clutch slip power, the second clutch slip power, the ambient air temperature, the engine oil temperature, and the transmission oil temperature using a linear time-invariant (LTI) model, wherein the LTI model is a three state model based on a first clutch plate, a second clutch plate, and a clutch housing, and wherein the LTI model is based on at least one heat balance equation associated with the DCT.