Chapter 14 Clutch 日儕大学 TONGII UNIVERSTTY The work characteristics of clutch under various working conditions Run in X position Clutch in combination c.Emergency braking If there is no clutch Emergency braking The function of clutch:3.To prevent Have the transmission system from inerti overloading Excessive load,effect Prevent the transmission the life of the system from overloading transmission components or damage the drive element
Chapter 14 Clutch c. Emergency braking Clutch in combination Clutch trackslip Run in X position Emergency braking The force between the driving disc and the driven disc reachs the limit Prevent the transmission system from overloading Engine speed decreases sharply Have a great moment of inertia Excessive load,effect the life of the transmission components or damage the drive element If there is no clutch The function of clutch：3.To prevent the transmission system from overloading The work characteristics of clutch under various working conditions
Chapter 14 Clutch 圆日海大学 TONGII UNIVERSTTY Composition and classification of clutchs >According to the basic function of the clutch,The clutch includes at least the driving parts and the driven parts; >The driving parts and the driven parts can be temporarily disengaged,and can be gradually engaged. >The driving parts and the driven parts must have non rigid connection,so they can move relatively. The classification of clutchs >Friction clutch:rely on mechanical friction to drive.According to different pressure force:spring pressure hydraulic pressure magnetic pressure. Hydraulic coupler:rely onetween liquids to drive. Electromagnetics clut on the coupling effect between magnets to drive
Chapter 14 Clutch Composition and classification of clutchs According to the basic function of the clutch,The clutch includes at least the driving parts and the driven parts; The driving parts and the driven parts can be temporarily disengaged, and can be gradually engaged. The driving parts and the driven parts must have non rigid connection,so they can move relatively. The classification of clutchs Friction clutch：rely on mechanical friction to drive. According to different pressure force：spring pressure、hydraulic pressure、magnetic pressure. Hydraulic coupler：rely on the coupling effect between liquids to drive. Electromagnetics clutch： rely on the coupling effect between magnets to drive. The content of this chapter
Chapter 14 Clutch 月傍大学 TONGII UNIVERSITY The operational principle of friction clutch Basic knowledges: Friction force: F=uP where u-friction coefficient; Pnormal pressure. Friction force is proportional to pressure; The friction coefficient depends on the characteristic of material itself,the size of material,and surface roughness,etc. Static Friction coefficient Slipping Friction coefficient
Chapter 14 Clutch The operational principle of friction clutch Basic knowledges： Friction force： where — friction coefficient; ——normal pressure. Friction force is proportional to pressure; The friction coefficient depends on the characteristic of material itself, the size of material, and surface roughness, etc. Static Friction coefficient > Slipping Friction coefficient F P P
Chapter 14 Clutch 日儕大学 TONGII UNIVERSTTY The operational principle of friction clutch .nnla4n The composition of clutch: >Driving part,driven part,pressure mechanism operation mechanism; >The function of the driving part,driven part and pressure mechanism is to ensure the clutch in the engaged state and transfer power/torque; >The operation mechanism (release mechanism) can ensure the clutch be disengaged correctly. Pedal stop pin Spline 图i5-l唯擦离合器的工作原理和Shaft 1-飞轮；2-从动盘；3-踏板：4-压紧弹簧：5-从动轴：6从动盘镘
Chapter 14 Clutch The operational principle of friction clutch Flywheel Driven plate Pedal spring Driven shaft Hub of driven plate Engine shaft Spline Shaft Pedal stop pin The composition of clutch： Driving part、driven part、pressure mechanism、 operation mechanism; The function of the driving part, driven part and pressure mechanism is to ensure the clutch in the engaged state and transfer power/torque; The operation mechanism (release mechanism) can ensure the clutch be disengaged correctly
Chapter 14 Clutch 同©大学 TONGII UNIVERSTTY The operational principle of friction clutch Clutch pedal Clutch Flywheel cover Pressure Plate Diaphragm Driven spring plate Engage and disengage state of friction clutch
Chapter 14 Clutch Flywheel Driven plate Diaphragm spring Clutch cover Pressure Plate Clutch pedal Engage and disengage state of friction clutch The operational principle of friction clutch