Double-VANOS in a nutshell...How it benefits a Motorer. CLICK HERE
The VANOS system is based on a mechanism that can modify the position of the intake camshaft relative to the crankshaft. Double-VANOS adjusts both the intake and exhaust camshafts. VANOS operates on the intake camshaft in accordance with engine speed and accelerator pedal position.
The BX8 engines use infinitely variable Double-VANOS, which significantly enhances emission management, increases output and torque, and offers better idling quality and fuel economy.
• At the lower end of the engine-speed scale, the intake valves are opened later,
which improves idling quality and smoothness.
• At moderate engine speeds, the intake valves open much earlier, which boosts
torque and permits exhaust gas re-circulation inside the combustion chambers,
reducing fuel consumption and exhaust emissions.
• At high engine speeds, intake valve opening is once again delayed, so that full
power can be developed.
An advantage of Double-VANOS is that the system controls the flow of hot exhaust
gases into the intake manifold (EGR valve function). This is referred to as "internal"
exhaust gas re-circulation, allowing a small amount of exhaust gas to be recycled.
VANOS is a combined hydraulic and mechanical camshaft control device managed by the vehicle's engine management system. This has made it possible to achieve functional improvements in full load, partial load and idling mode and to reduce pollutant emissions.