Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

renault_megane_dci · 02-18-2013, 04:22 PM

I searched the web today trying to find out % of power loss and MPG increase for Atkinson engine but have not been lucky.

Since most cars using the Atkinson cycle have cam phasers, the switch from Otto'ish to Atkinson'ish depending on power requirement.
So their overall performance and MPG is not gonna be properly reflective of a fixed Atkinson as I intend to build.

Also, I have been looking at SV's (I like Suzukis) since they are far more sexy than GPZ's but had to rule them out since they would need two cam regrind instead of the cam swap I intend to do and they have a 150 cm3 penalty in the FE race ...
Honda CB 500 are out of the question too with no lower power derivatives.

Ho well, I'd better get used to drive a Kawi ...

02-18-2013, 04:22 PM	#48 (permalink)
renault_megane_dci Master EcoModder Join Date: Feb 2009 Location: France - Paris Posts: 762 la_voiture_de_courses - '03 Renault Megane Estate OldContinents 90 day: 44.34 mpg (US) xiao lan - '01 Audi A2 90 day: 38.88 mpg (US) Brit iron - '92 Mini Mini 90 day: 45.5 mpg (US) Prius - '09 Toyota PRIUS Lounge 90 day: 47.37 mpg (US) Beemer - '06 BMW F800 ST 90 day: 53.06 mpg (US) Thanks: 188 Thanked 33 Times in 30 Posts	I searched the web today trying to find out % of power loss and MPG increase for Atkinson engine but have not been lucky. Since most cars using the Atkinson cycle have cam phasers, the switch from Otto'ish to Atkinson'ish depending on power requirement. So their overall performance and MPG is not gonna be properly reflective of a fixed Atkinson as I intend to build. Also, I have been looking at SV's (I like Suzukis) since they are far more sexy than GPZ's but had to rule them out since they would need two cam regrind instead of the cam swap I intend to do and they have a 150 cm3 penalty in the FE race ... Honda CB 500 are out of the question too with no lower power derivatives. Ho well, I'd better get used to drive a Kawi ... Last edited by renault_megane_dci; 02-18-2013 at 04:24 PM.. Reason: posted before I finished it ...