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Brand: C.OEFT
OE numbers:7701478505
Product Name: Camshaft Adjuster
Compatible model: 7701474362 7701478079
Product status: New
Number of teeth on the product:38
Product weight:0.9942kg
Packaging size: 17*17*8.5 cm
Product packaging: Neutral Packaging
Car Series: France
Car Type: for Renault
1.Valve Timing Adjustment
The VVT (Variable Valve Timing) camshaft adjuster can adjust the phase of the camshaft according to changes in engine operating conditions such as engine speed. This adjusts the intake and exhaust volumes, controls the timing and angle of valve opening and closing, improves the engine's intake efficiency and combustion efficiency, and increases engine power.
2.Precise Valve Distribution Assurance
The timing chain in the timing chain kit is responsible for connecting the engine's crankshaft and camshaft, ensuring that the opening and closing of the valves are precisely synchronized with the movement of the pistons. This is crucial for engine performance, fuel efficiency, and reducing emissions.
3.Automatic Chain Tensioning
The tensioner in the kit can automatically adjust the tension force according to the tightness of the timing chain, preventing the chain from being too loose or too tight. This reduces noise during chain operation, avoids chain slippage, and ensures stable and reliable operation of the transmission system.
4.Chain Drive Guidance
The idler pulley in the kit assists the tensioner and chain in functioning better, changes the transmission direction of the chain, increases the wrap angle between the chain and the sprocket, ensures the chain operates along the correct path, and reduces chain wear.
1.High-Durability Materials & Craftsmanship for Extended Service Life
The timing chain is made of carburized alloy steel (with tensile strength increased by 25%); the VVT adjuster incorporates aerospace-grade aluminum alloy and ceramic friction plates (doubling its service life); the tensioner bearings feature double-row sealing. Supplemented by shot peening reinforcement and honing polishing processes, it can withstand high temperatures of 120-150°C and high-speed impacts above 6000rpm. The failure rate is less than 0.5% within 100,000 kilometers, and some products come with a 5-year/100,000-kilometer warranty.
2.Intelligent VVT Adjustment for Optimized Power & Fuel Economy
Controlled in real time by the ECU (Engine Control Unit) with a response time of ≤0.3 seconds, it advances the intake valve opening at low speeds to increase torque (for smoother starting) and delays the intake valve closing at high speeds to optimize combustion efficiency. Test data shows it reduces high-speed fuel consumption by 8%-10% and nitrogen oxide emissions by 15%. With a transmission error of ≤0.05mm and timing synchronization accuracy within ±1° crankshaft angle, the engine maintains over 98% of its rated power, with a long-term power degradation rate of less than 5%.
3.Error-Proof & Sealing Design for Driving Safety
The VVT adjuster is equipped with a foolproof buckle to prevent reverse assembly, and the timing chain has color-coded marks to reduce timing alignment errors, avoiding the risk of valve-piston interference. The sealing ring is made of fluororubber (with temperature resistance from -40°C to 200°C), which prevents VVT failure and insufficient lubrication caused by oil leakage, lowering the probability of breakdowns during driving.
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