to increase efficiency of i.c. engines

[remo_bonde]

to increase of efficiency ic engine make the engine to work in lean regime (less fuel per cycle). or by controlling vortices of fluid inside the combustion chamber or you can increase efficiency of ic engine by modifying the insulation system arount the engine

see related page link here
http://faqspatents/app/20090223481
http://freepatentsonline7581526.html

[computertits2008]

i want to do project related to increase of efficiency ic engine()s.. so i need details on this ..
how to do and how to prepare..