Why doesn't Toyota put the Atkinson cycle engine in other Toyotas?
From what I understand, all the Atkinson cycle is is the late closing of valves in the compression stroke. Is that right? So what is to prevent Toyota from their other engines close valves late on compression cycles also? Especially at highway speeds when you're looking for efficiency and not power.
Also how much of the Prius gas mileage advantage at highway speeds over say, the Camry, is due to the Atkinson and how much to lower drag coefficients?
From what I understand, all the Atkinson cycle is is the late closing of valves in the compression stroke. Is that right? So what is to prevent Toyota from their other engines close valves late on compression cycles also? Especially at highway speeds when you're looking for efficiency and not power.
Also how much of the Prius gas mileage advantage at highway speeds over say, the Camry, is due to the Atkinson and how much to lower drag coefficients?