The K20A used in the new Honda STREAM is the first of the new generation i-VTEC engines. Eventhough the engine does not produce a humongous amount of power in absolute terms, the importance of the engine is that it tells us of the new technologies that Honda is working on, and directly indicates the technologies that will be used on the new generation i-VTEC super high-performance engines that is to come.
Fuel Economy, Ample Torque, Clean Emissions- The i-VTEC provides it all depending on engine load -
The DOHC i-VTEC utilizes smart valve control technology.
The i-VTEC system utilizes Honda's proprietary VTEC system and adds VTC (Variable Timing Control), which allows for dynamic/continuous intake valve timing and overlap control.
The demanding aspects of fuel economy, ample torque, and clean emissions can all be controlled and provided at a higher level with VTEC (intake valve timing and lift control) and VTC (valve overlap control) combined.
Additionally, the intake manifold length can be adjusted.
Combined with the DOHC i-VTEC, in order to obtain both ample low/mid-end torque and high-end output, a rotary valve is used inside the dual-passage intake manifold.
During low/mid rpm,, the rotary valve is closed, while it opens during high rpm's. By varying the intake path length according to engine rpm, ample torque is gained at all rpm levels. Additionally, the rotary valve design is superior over past butterfly valve (flap) in that it reduces intake resistance.
No comments:
Post a Comment