Honda has announced it’s next generation VTEC engine, the Advanced VTEC engine (AVTEC) which will make it’s debut in a production car within the next three years. Honda’s new Advanced VTEC (AVTEC) engine combines continuously variable valve lift and timing control with the continuously variable phase control of valve timing to achieve a good combination of better performance, fuel economy, and lower emissions. This is an improvement over the i-VTEC system which has preset changeover settings in valve lift – the new AVTEC system can adjust the valve lift continuously. There is also a variable-length intake manifold to improve intake airflow.
The Advanced VTEC (AVTEC) system allows optimum control over intake valve lift and phase in response to driving conditions for a significant increase in torque across the engine rev range. Under low and medium loads, the valves are set to have low lift and early closure – this reduces pumping losses and subsequently improves fuel economy.
The new AVTEC system will allow for a 13% improvement in fuel economy over the current i-VTEC range of engines. The 13% figure was obtained comparing the current K24A 2.4 litre i-VTEC engine with a new 2.4 litre AVTEC equivalent. Emissions are compliant with US LEV2-ULEV standards and Japanese Low-Emission Vehicles standards with levels 75% lower than 2005 standards.