| Engine Mode | MAN D0824 LE201 |
|---|---|
| Application | Marine Propulsion & Marine Generator Set |
| Arrangement | In-line 4-Cylinder, 4-Stroke Turbocharged Diesel Engine |
| Bore × Stroke | 108 Mm × 125 Mm |
| Displacement | 4.58 L |
| Part Number | 12420395 (OEM Original Part, Standard Size) |
|---|---|
| Type | Complete Piston Ring Set |
| Applicable Models | MWM TBG620 V12/V16/V20, TBD620, TCG2020 Series Gas And Diesel Engines |
| Matching Part | Compatible With Piston Assembly 12420394 |
| Composition | One Set Per Cylinder, Including Compression Rings And Oil Control Ring |
| Diameter | φ172 Mm |
|---|---|
| Height | 232 Mm |
| Weight | ~9.1 Kg |
| Packaging Details | Original packaging |
| Delivery Time | 15days |
| Material | High-temperature Cobalt-based Alloy (Stellite 6) / High-chromium Heat-resistant Steel, Temperature Resistance: 750–950℃. |
|---|---|
| Process | Powder Metallurgy / Precision Casting Plus Heat Treatment. Hardness: HRC 45–55. Features Excellent Wear Resistance, Impact Resistance And High-temperature Creep Resistance. |
| Seat Taper Angle | 45° (standard), Compatible With Valve Taper Surfaces Of The Same Series. |
| Outer Diameter | Approx. 48–52 Mm |
| Inner Diameter | Approx. 38–42 Mm |
| Free Length | 68.8 Mm |
|---|---|
| Outer Diameter | φ30.5 Mm |
| Wire Diameter | φ4.2 Mm |
| Installed Height | 46.8 Mm |
| Load | 360–400 N |
| Main Material | FKM/Viton Fluoroelastomer, High Temperature Resistant And Gas Corrosion Resistant. |
|---|---|
| Reinforcement Frame | Cold-rolled Steel Plate With Galvanized Anti-rust Treatment. Spring: Stainless Steel Coil Spring, Radial Tension: 1.0–2.0 N. |
| Hardness | Lip Hardness: Shore A 75±5°. |
| Operating Temperature | -40℃ ~ +350℃, Applicable To Both Intake And Exhaust Sides Of Gas Engines. |
| Inner Diameter (Lip) | φ8.0 Mm, For Dynamic Sealing Of Valve Stem. |
| Outer Diameter | φ15.0 Mm (interference Fit For Cylinder Head Press-in) |
|---|---|
| Inner Diameter | φ8.0 Mm (fits Valve Stem) |
| Length | 58 Mm |
| Installation Interference | 0.05–0.08 Mm |
| Valve Stem Clearance | 0.03–0.06 Mm (standard For Intake Valves) |
| Overall Length × Width | Approx. 220 × 220 Mm |
|---|---|
| Thickness (Free State) | 2.0 Mm |
| Cylinder Bore Inner Diameter | φ128 Mm (matching 128 Mm Cylinder Bore) |
| Bolt Holes | 8 Pcs Of M12 Bolt Holes, Pitch Circle Diameter φ190 Mm |
| Water Holes | 4 Pcs Of φ20 Mm Through Holes, Symmetrically Arranged |
| Ocker Ratio | 1.75:1, Amplifying Cam Lift To Increase Valve Opening Stroke |
|---|---|
| Shaft Diameter (Bushing Inner Diameter) | φ16 Mm |
| Fitting Clearance Between Rocker Arm And Shaft | 0.015–0.040 Mm |
| Contact Surface Width At Valve End | 12 Mm |
| Adjusting Screw Specification | M9×1 |
| Input Voltage | DC 24V (dedicated For Gas Engines) |
|---|---|
| Primary Resistance | 0.5~0.8 Ω (at 20℃) |
| Secondary Resistance | 12~15 KΩ (at 20℃) |
| No-load Output Voltage | ≥ 35 KV |
| Spark Energy | ≥ 80 MJ |