Method for operating a two-stroke engine

A method for operating a two-stroke engine including a drive motor in a portable, handheld work apparatus including a chain saw, a brushcutter and a cutoff machine, the engine including:

• a cylinder having a cylinder wall;
• a piston mounted in said cylinder to undergo a reciprocating movement along a stroke path between top dead center and bottom dead center during operation of said engine;
• said cylinder and said piston conjointly delimiting a combustion chamber;
• a crankcase connected to said cylinder;
• a crankshaft rotatably mounted in said crankcase;
• a connecting rod connecting said piston to said crankshaft to permit said piston to drive said crankshaft as said piston reciprocates in said cylinder;
• an exhaust outlet for conducting exhaust gases away from said combustion chamber;
• a storage channel having a first end in the form of an inlet into said combustion chamber and said inlet lying approximately opposite to said exhaust outlet;
• said storage channel having a second end communicating via a controlled opening with said crankcase;
• a first fuel metering device connected to said storage channel between said first and second ends thereof;
• said first fuel metering device and said storage channel conjointly defining a first fuel path;
• said crankcase having a crankcase inlet;
• a second fuel metering device connected to said crankcase inlet and defining a second fuel path therewith;
• a transfer channel connected between said crankcase and said combustion chamber;
• the method comprising the steps of:
• providing an acceleration unit operatively connected to said first and second fuel paths;
• and,
• causing said acceleration unit to pump additional fuel into each of said first and second fuel paths during an acceleration of said engine.