- Honda Car Owner's Manual

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ENGINEFRICTIONREDUCTIONTECHNOLOGIES

To minimize energy losses, friction between moving parts is minimized by utilizing the following

features:

• Offsetcylinderconstruction

• Intheinterestoffrictionreduction,Hondaengineersspecifiedanewlightweightaluminum-

alloypistondesignfortheIMAengine.Thepistonshaveaminimalskirtareaandthesurface

oftheskirthasbeenshot-peened.Shot-peeningisaprocessinwhichametalpart,suchasa

piston or connecting rod, is blasted with shot-like particles, creating uniform, microscopic

dimples on the surface. This dimpled surface is better able to retain a lubricating oil film.

Shot-peeningtheIMAengine'spistonsaccountsforanother1.5-to2.0-percentreductionin

internalfriction.

• Rockerarmsarefittedwithrollersthatminimizefrictiononthecam'scontactsurfaces.

• OW20friction-reducingengineoil

Theoverallloadontheengineisreducedbyusingelectricpowersteering.Itisalsoreducedbythe

elimination ofa conventionalalternator, insteadusingthe IMAsystem'sDC-DC Converterto powerall

electricalaccessoriesfromIMAMotor/Generatorpower.

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Rockerarmsfittedwithrollers

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