ASBG-G4FD/G4FJ1.6-5

1. Core Function: Ensuring Precise Timing Synchronization

As the "transmission core" of G4FD/G4FJ 1.6L engine timing systems, the kit’s components work together to maintain stable four-stroke cycle operation:

·Timing Chain: Connects the crankshaft and camshaft, strictly maintaining a 1:2 rotation ratio to precisely control the opening and closing timing of intake and exhaust valves. This ensures no interference between valves and pistons during the "intake → compression → power → exhaust" strokes, avoiding costly "valve-piston collision" faults (repair costs exceed 10,000 yuan).

·Hydraulic Tensioner: Real-time compensates for chain slack caused by long-term use, pushing the guide via engine oil pressure to keep the chain at optimal tension. It prevents timing confusion due to "chain skipping" (which triggers the engine fault light and causes power loss) and uses a one-way locking structure to maintain tension after engine shutdown—avoiding slack during restart.

·Precision Sprocket & Guide: The sprocket ensures no slip in chain transmission, improving timing accuracy; the guide fixes the chain’s movement path, preventing CVVT phase deviation caused by lateral chain offset.

2. Optimizing Engine Performance & Fuel Economy

·Reducing Mechanical Loss: The low-friction chain and guide reduce the timing system’s mechanical resistance by 30%, increasing G4FD/G4FJ engine power transmission efficiency by 5%-7%.

·Enhancing Fuel Efficiency: Precise timing control optimizes intake and exhaust efficiency, promoting fuller fuel combustion. Tests show it reduces urban fuel consumption by 0.3-0.5 L/100km (e.g., Hyundai Elantra 1.6L’s urban fuel consumption drops from 7.5 L/100km to 7.0 L/100km), saving fuel costs for long-term use.

·Stabilizing Low-Speed Torque: For G4FD/G4FJ engines’ common low-speed working conditions (1500-2500 rpm in urban driving), optimized timing improves intake charge coefficient—enhancing low-speed torque output for more responsive start-ups and low-speed following.