SsangYong Rexton. Manual - part 38
DI02-43
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
ENGINE HOUSING
DI ENG SM - 2004.4
Y220_02112
<Example of DMF operation>
Y220_02113
System Characteristics
Function
• Filters irregularities of engine: The secondary flywheel
operates almost evenly so does not cause gear noises
• The mass of the primary flywheel is less than
conventional flywheel so the engine irregularity
increases more (less pulsation absorbing effect)
• Transmission protection function: Reduces the load to
powertrain (transmission) by blocking the irregularity
of engine
Characteristics of DMF
• Reduced vibration noise from the powertrain by blocking
the torsional vibrations
• Enhanced vehicle silence and riding comforts: reduced
engine torque changes
• Reduced shifting shocks
• Smooth acceleration and deceleration
Structure
Function and characteristics
• When the output changes from the engine is high during
power stroke (
): The damper absorbs the shocks to
reduce the changes to transmission.
• When the output changes from the engine is low during
compression stroke (
): The damper increases the torque
changes to clutch.
Advantages of DMF
• Improved torque response by using 3-stage type spring:
Strengthens the torque response in all ranges (low,
medium, and high speed) by applying respective spring
constant at each range.
• Stable revolution of the primary and secondary wheel
by using planetary gear: Works as auxiliary damper
against spring changes
• Less heat generation due to no direct friction against
spring surface: Plastic material is covered on the spring
outer surface
• Increased durability by using plastic bushing (extends
the lifetime of grease)
<Torque change curve of engine and drive shaft>
Angular acceleration amplitude [1/s
2
]
Speed [rpm]
Conventional system
Speed [rpm]
DMFW
Transmission
Engine
Transmission
Engine