Shandong Shengyue Technology Development Co.,Ltd is one of the most professional weichai wd615 engine flywheel ring gear 612600020208 for sinotruk howo trucks manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
WEICHAI WD615 Engine Flywheel Ring Gear 612600020208 FOR SINOTRUK HOWO TRUCKS
FUNCTION
1. Instantaneous Transmission of Massive Starting Torque: The moment the truck is started, the starter motor's pinion gear thrusts forward to forcibly engage with the ring gear. By leveraging the mechanical advantage generated by its large diameter, the ring gear amplifies the electrical energy-converted into mechanical force-produced by the starter motor. This action forcibly rotates the heavy crankshaft, connecting rods, and pistons, thereby helping the diesel engine attain the initial rotational speed required for compression ignition.
2. Energy Storage and Engine Smoothness: The ring gear is thermally shrunk onto the outer rim of the flywheel, rotating in unison with it at high speeds. As the heaviest component on the flywheel's periphery, it utilizes powerful rotational inertia to store kinetic energy. Throughout the diesel engine's four-stroke cycle, the ring gear and flywheel release this stored inertial energy to maintain rotational momentum, ensuring that the vehicle chassis remains smooth and free of vibration during continuous engine operation.
3. Physical Target Ring for Engine Speed Signals: In modern high-pressure common rail diesel engines, the high-speed rotation of the flywheel ring gear is monitored in real-time by a dedicated magneto-electric crankshaft speed sensor. By calculating the precise time intervals as the ring gear's teeth pass the sensor, the Electronic Control Unit (ECU) accurately determines the engine's current rotational speed and the Top Dead Center (TDC) position of the first cylinder, thereby enabling precise control over fuel injection timing.
DETAILS
| DESCRIPTION | Flywheel Ring Gear | PART NUMBER | 612600020208 |
| WEIGHT | 3.8 kg | VOLUME |
OD 484 mm ID 432 mm Width 19 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Typical Driving Symptoms of Component Failure
1. Abnormal Noises or Free-Spinning During Starting: If the teeth on the ring gear have been worn smooth at a specific angle, and the engine happens to come to rest at that exact position, the starter pinion will extend but strike the worn teeth. This results in the starter motor spinning rapidly without engaging (free-spinning), accompanied by a harsh, grating metallic sound, preventing the truck from starting.
2. Violent Jolting During Starting: If the ring gear suffers from localized deformation or loss of concentricity-whether due to manufacturing defects or damage caused by improper "cold-fitting" (forceful installation)-the starter pinion will engage with the ring gear inconsistently (alternating between deep and shallow engagement). This causes the entire front end of the vehicle to experience a violent jolt or impact sensation the moment the engine is cranked.
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