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Brand: C.OEFT
OE numbers: F4J15-1006070BA
Product Name: Camshaft Adjuster Timing Gear
Compatible model:
Product status: New
Number of teeth on the product: 54
Product weight: 1.1 kg
Packaging size: 17*17*8.5 cm
Product packaging: Neutral Packaging
Car Series: Chinese
Car Type: for Chery
The engine timing gear (or timing chain/belt) is a core component of the engine valve train. Its primary function is to precisely coordinate the rotational motion of the crankshaft and camshaft, ensuring that the engine's intake and exhaust valves open and close at the correct time.Here are its specific functions:
1. Synchronize the crankshaft and camshaft
·The crankshaft controls the up-and-down movement of the pistons, and the camshaft controls the opening and closing of the valves.
·The timing gear ensures a strictly matched speed ratio between the two via mechanical connections (gear meshing, chain or belt drive) – typically, the crankshaft rotates twice for every rotation of the camshaft.
2. Control valve timing
· It ensures that the intake valve opens when the piston moves downward (to draw in the air-fuel mixture) and the exhaust valve opens when the piston moves upward (to expel exhaust gases).
·If the timing is misaligned (e.g., tooth skipping), it may cause the valves to collide with the pistons (engine interference), leading to reduced power or even severe damage.
3. Maintain engine efficiency
· Precise timing optimizes combustion efficiency, which in turn affects power output, fuel economy, and emission levels.
· Modern Variable Valve Timing (VVT) systems build on this to dynamically adjust valve opening and closing timing further.
4. Drive auxiliary components
·The timing gear/chain in some engines also drives components such as high-pressure oil pumps and balance shafts to operate synchronously.
1.Ultra-High Durability
·The timing gear is manufactured from high-strength alloy steel. Its wear resistance and tensile strength are far superior to those of rubber timing belts. The service life can reach over 200,000 kilometers, and it may even match the service life of the engine.
·Metal gears experience slow wear and are not prone to breakage. In contrast, belts need to be replaced every 60,000 - 100,000 kilometers and have a higher risk of breakage.
2.Precise Synchronization
·The meshing transmission error of gears is extremely small, enabling the phase difference between the crankshaft and the camshaft to be controlled within 0.5 degrees, thus preventing valves from colliding with pistons.
·Belts are prone to aging and deformation after long-term use, leading to tooth skipping or timing deviation and affecting combustion efficiency.
3.Adaptability to Extreme Environments
·Metal gears are resistant to high temperatures (engine compartments can reach over 150℃) and oil contamination and corrosion. In contrast, belts are prone to deterioration when exposed to high temperatures and in contact with engine oil.
· Chains require oil lubrication, but gears themselves have lower lubrication requirements and are easier to maintain.
4.Power Transmission Efficiency
·Gear transmission has high rigidity and low power loss, making it suitable for high - speed engines. Belts have elastic deformation, which may affect synchronization accuracy under high - speed operating conditions.
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