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Ecky · 06-05-2016, 12:56 AM

I'm aware of how low it is, and I'm still inclined to believe the chart is for stoichiometric combustion, because you can't get that kind of torque with lean burn in the Insight. Peak torque (WoT) in LB is somewhere closer to 50Nm, making that impossible. Any higher and it's necessarily stoich.

Edit: FWIW Honda has since built several engines that exceed the thermal efficiency of the ECA1. The 2.0L Atkinson cycle engine in the 2014 Accord hybrid is claimed to be the most efficient engine ever put into a production car.

06-05-2016, 12:56 AM	#10 (permalink)
Ecky Master EcoModder Join Date: Dec 2011 Location: New Zealand Posts: 5,014 ND Miata - '15 Mazda MX-5 Special Package 90 day: 40.51 mpg (US) Thanks: 2,869 Thanked 2,513 Times in 1,553 Posts	I'm aware of how low it is, and I'm still inclined to believe the chart is for stoichiometric combustion, because you can't get that kind of torque with lean burn in the Insight. Peak torque (WoT) in LB is somewhere closer to 50Nm, making that impossible. Any higher and it's necessarily stoich. Edit: FWIW Honda has since built several engines that exceed the thermal efficiency of the ECA1. The 2.0L Atkinson cycle engine in the 2014 Accord hybrid is claimed to be the most efficient engine ever put into a production car. __________________ Ecomodding 2015 MX-5 Miata Honda Insight w/Acura TSX engine 2000 Insight TLC & Build Thread Last edited by Ecky; 06-05-2016 at 01:01 AM..