Patent ID: 8851054

Claim:
Apparatus for providing fugitive gases diluted with air as a supplementary fuel to an engine, said apparatus comprising means to supply a principal fuel to said engine, at least one source of said fugitive gases diluted with air during operation of said engine at ambient pressure to supplement said principal fuel and to reduce the quantity of said principal fuel required for operation of said engine, piping to convey said air diluted fugitive gases to said engine, a control valve within said piping to measure the flow of said air diluted fugitive gases through said piping, a restriction in an air inlet to said engine, said restriction being an air filter in said air inlet to said engine which air filter provides a vacuum enabling said air diluted fugitive gases to enter said engine and an atmospheric vent to allow the exit of said air diluted fugitive gases to the atmosphere prior to said air diluted fugitive gases passing through said control valve, said piping conveying said air diluted fugitive gases at a predetermined flow to said air inlet of said engine downstream of said air filter, said at least one source of said fugitive gases being a source other than a fuel tank supplying said principal fuel to said engine.