A line of small internal combustion engines (50, 300, 400, 500, 600, 700), including twin cylinder engines (50, 300,400) and single cylinder engines (500, 600, 700). The engines each include a crankcase (52, 302, 402, 502, 602, 702), and one or more cylind...

The present invention relates to an engine and a method for producing the engine. The engine is constructed as follows. The engine interlockingly operates a pump (39, 139) for feeding fuel under pressure, by power of a crank shaft (1). A pair of gears (32a...

A plasma ignition process for a gas-air mixture in a combustion engine forms a plasma in a fore chamber by adiabatically compressing a small portion of the mixture to 100 bar and 800degrees C and injecting the plasma directly into the combustion chamber vi...

An air cleaner system for small internal combustion engines (20), including a removable or replaceable air cleaner element (72) detachably mounted within an air cleaner cavity (70) which is defined at least in part by the shroud (26) of the engine. The air...

A small internal combustion engine (20) having user interfaces which are located proximate to one another and within a centralized portion of the engine which is easily accessible by a user, such that the user may readily identify and manipulate the user i...

A twin cylinder engine (50, 300), includes a pair of cylinder members (74a, 74b) mounted to mounting surfaces (72a and 72b) of a crankcase (52), and cylinder heads (96, 324) mounted to the cylinder members. The cylinder members are modular components, whic...