|
Hey arghx7 if you see this, I was wondering about the thing you said about direct injection being very reliant on charge motion.
The 2GR-FSE paper has a chart that went something like "tumble ratio" vs. "flow coefficient", and they explained that they used a high flow port on the 2GR. From context, it seems like they're telling us the 2GR has high flow, low tumble ports. It has a little blurb about "consequently the tumble ratio of the high flow test engine was reduced by one third at the valve-lift divided by valve-diameter of 0.3".
Is this to say that the ports are still a compromise between tumble and flow? Is this why you were questioning the viability of increasing revs (intake port flow)?
Last edited by serialk11r; 03-27-2012 at 09:28 PM.
|