The present invention provides apparatus for varying an engine's combustion spark timing for use of hybrid fuels, such as bio-fuel and gasoline. An operator selectable switch enables or disables an on-board computer selecting between gasoline and bio-fuel mixtures as the on-board fuel so that engine...http://www.google.es/patents/US8136486?utm_source=gb-gplus-sharePatente US8136486 - Motorized vehicles spark timing control for use with biofuel gasoline mixture
Motorized vehicles spark timing control for use with biofuel gasoline mixture
