| 摘要 |
#CMT# #/CMT# The line (10) has an exhaust duct (11) with a front end (14) for admission of exhaust gas, and a rear end (15) for exit of the exhaust gas in atmosphere. A boot flexible type axial compression decoupler (16) is disposed between the ends. Two rear shroud lines (32, 34) and a front shroud line (36) fix the duct on a structure of a motor vehicle. The decoupler presents an axial dynamic stiffness lower than 60 Newton per millimeter, on a frequency range of 20 to 300 hertz. The shroud lines present transversal, vertical and static stiffness between 50 and 150 Newton per millimeter. #CMT#USE : #/CMT# Exhaust line for a heat engine of a motor vehicle. #CMT#ADVANTAGE : #/CMT# The utilization of the axial compression decoupler and the shroud lines efficiently filters the vibrations of the heat engine while limiting the clearance of the exhaust line with respect to a body shell of the motor vehicle, thus improving the external visual appearance of the vehicle, and reducing the volume freely left around the exhaust line, and hence allocating the liberated spaces to other equipments. The exhaust line provides a very good filtration of the mechanical solicitation coming from the engine while presenting a reduced range of movement. The utilization of the rear shroud lines authorizes the limited axial clearance of the exhaust duct located in downstream of the front shroud line, thus compensating the axial dilatation and tightness of the exhaust duct. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an exhaust line fixed under a motor vehicle. 10 : Exhaust line 11 : Exhaust duct 14 : Front end 15 : Rear end 16 : Boot flexible type axial compression decoupler 32, 34 : Rear shroud lines 36 : Front shroud line. |
