Bài giảng hệ thống treo

2 Parallel leaf spring type 3 Leading arm type with lateral rod, trailing arm type with lateral rod 4 4-link type... 2 Parallel leaf spring type Rear axle Leaf spring... 3 Leading arm ty

Stabilizer

Shock absorber

Torsion beamSpring

Suspension arm

Lower armShock absorber

(2) Tramping

(3) Wind-up

(1) Rigid axle suspension (2) Independent suspension

(1/3)(1) Rigid axle suspension (2) Independent suspension

(1) Rigid axle suspension (2) Independent suspension

(2) Parallel leaf spring type

(3) Leading arm type with lateral rod, trailing arm type with lateral rod

(4) 4-link type

(1) Trailing arm type with torsion beam

Trailing arm Torsion beam

Stabilizer bar

No lift-up

(2) Parallel leaf spring type

Rear axle

Leaf spring

(3) Leading arm type with lateral rod, trailing arm type with lateral rod

Lateral control rod

(4) 4-link type

Upper control arm

Lateral control rod

Lower control armUpper control arm

Stabilizer

(1) Macpherson strut type

(2) Double wishbone type

•Semi-trailing arm type

Suspension arm

Upper armCoil spring

Tire-to-groundcamber

Tread

Tread

Lower arm

k = spring constant, in N/mm

= k (constant)

W1a1

W2a2

W3a3

3.Spring oscillation

Oscillation pattern

Leaf spring Coil spring Torsion bar spring

Fixed end of torsion bar

Torsion applied to end of bar by lever

Rubber spring Air spring

2.Leaf springs

Center boltEye Clip

Shackle

Span

Nip

Camber

Progressivespring

5 Rubber springs

TorsionOpposing torsion Fixed end of torsion bar

Torsion applied to end of bar by lever

Rubber cushionSprings bumper

Air chamber

Rolling diaphragm

6.Air springs

SpringTire

Shock absorberSuspension linkage & axle

without Shock absorber

with Shock absorber

Low (soft)Medium (sports)High (firm)

Piston rodRod guideOil sealRebound stopper

Piston valve

Free pistonProtector

Lower chamberUpper chamber

Nitrogen gas (High pressure)

1.Mono-tube type

<2> During rebounding (expansion)

Ring nut Bumper stopperOil seal

Rod guide

Piston rodCylinder

Rebound stopperPiston valve

GasketAirAbsorber shell

ReservoirPistonBase valve

Piston rod

Gas (Low pressure)Piston valveFluid

Base valve

Low-pressure gas-filled type

2.Twin-tube type

Chamber BOrificeReservoir chamberPiston & piston valve

Chamber ANon-return valveLeaf valveBase valve

Non-return valve

Leaf valve

Piston rod’s speed of motion high

Piston rod’s speed of motion low

Piston valve Base valve

Piston valve Base valve

Leaf valve

Non-return valveLeaf valveOrifice

Chamber B

<2> During bounding (expansion)

OrificeLeaf valve

Non-return valveLeaf valveBase valve

Non-return valve

Leaf valve

Piston rod’s speed of motion high

Piston rod’s speed of motion low

Piston valve Base valve

Piston valve Base valve

Piston rod

Chamber A

Non-return valvePiston & piston valveReservoir chamber Orifice

(1/3)

(1) Ducarbon type

Hole

Vinyl bagDrill (2∼3φmm)10mm

Gas Freepiston Rubber band

(2) Non-disassemblable MacPherson strut type

(3) Disassemblable MacPherson strut type

Drill area

SST

3.Evacuation of gas

shock absorbers

Cartridge

Piston rod with cylinder

Ring nut

Rod guideA

a

b

B

PistonInner shell

Bending force

Spindle

LoadReactive force

by spring off-setting