Using the same intelligent VTEC system that switches the valve timing
for maximum efficiency during startup and acceleration, the new 1.8-liter i-VTEC engine
achieves powerful performance, and delays intake valve closure timing during cruising
and other low-load conditions for more improved fuel economy.
With the new i-VTEC engine, intake valve closure timing is delayed to
control the intake volume of the air-fuel mixture, allowing the throttle valve to remain
wide open even under low-load conditions. This translates to a major reduction in
pumping losses. Combined with comprehensive friction-reducing measures, this results in
a significant increase in fuel efficiency for the engine. Even better, this new engine
genius is lighter, shorter and quieter.