Mono Tube Damper Mono Tube Twin Tube Purpose Feature

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Presentation transcript:

Monotube Damper (www.mandoparts.com)

Mono Tube Damper Mono Tube Twin Tube Purpose Feature Improvement of comfort and handling under various conditions Better ride & road-holding performance Feature Gas Chamber (Low pressure) Separate oil and gas chamber by free piston - Good fade performance Light weight with less components High gas-pressure charge (app. 15~30bar) Stable damping force at any install conditions (Upright, sideways, upside-down) Base shell Inner Tube Oil Application (Domestic) Free-floating Piston Base Shell Hyundai Ssangyong Genesis Coupe YF SONATA Chairman-H (10MY) Gas Chamber (High Pressure) Oil Applicable for rear damper only

Shock absorber trend Twin Tube Mono Tube Mechanism Comparison Consists of an inner and outer tube : Gas charged in outer tube (Gas filling pressure: 3 Bar) Rebound damping force produced by piston valve Compression damping force produced by body valve Rebound / Compression Rebound / Compression Consists of a single tube : Oil and High pressure gas chamber (30bar ) separated by free-floating piston Free-floating piston : Moves during rebound and compression stroke Rebound and compression damping force controlled by piston valve Gas Chamber (Low Pressure) Piston Valve Piston Valve Single Tube Inner Tube Oil Tube Outer Free-Floating Piston Oil Gas Chamber (High Pressure) Body Valve

Benefits Twin Tube Mono Tube Performance Comparison Feature Description Damping lag occurrence possible by oil cavitation due to pressure change ( Unbalanced R & H ) Damping Force No damping lag by oil cavitation due to separate oil/gas chamber 100 Weight ratio 80 ( 10 ~ 20% ↓) Variable ( Damping force cannot be retained in highly inclined conditions ) Packaging ( Damping force retained even on highly inclined conditions ) Disadvantage of heat emission due to twin tube Durability Swift heat dissipation due to single tube design Normal response (OE-Spec) Ride & Handling Better response and road holding due to high pressure chamber Low pressure oil seal Major Component High pressure oil seal Free floating piston added Increased thickness for strength and controlled roughness of piston sliding part on outer tube → Higher cost compared to twin tube Damping force Damping force Damping lag Stroke Stroke

Application Examples of Non-Korean Automobile Applications Benz GM Toyota Ford Jaguar Opel Infiniti E350 - Front / Rear CADILLAC DTS - Magnetic Ride Control CADILLAC SRX - Rear LEXUS LS430 FIVE HUNDRED X-TYPE VECTRA G37 Coupe ML350 , 500 CADILLAC STS CADILLAC ESCALADE MARK X CROWN VICTORIA - Front / Rear + most motorsport applications and sports cars Domestic Vehicle Application Trend Hyundai/KIA automobiles introduced towards the end of 2010 will apply mono tube damper technology to their medium and compact range (rear suspension)