Dolmar Gmbh

Sascha Kolossow

Jan Rodenbeck

Johannes Lügger

Dirk Spohr

The present invention relates to a method for starting an internal combustion engine using a starting device, an ignition spark from a spark plug of an internal combustion engine being controllable by the starting device as a function of the speed of the crankshaft, a progressive rise of the advance of the ignition angle before top dead center already being performed as a function of the crankshaft speed at low speeds below the idle speed, which is followed at rising crankshaft speed by a sudden drop of the advance of the ignition angle to a plateau of the idle speed range.

Starting device for internal combustion engines and method therefor

A chainsaw includes an internal combustion engine with a fuel-air mixture inlet and a carburettor with a fuel-air mixture outlet disposed in the direction of flow of a fuel-air mixture in front of the fuel-air mixture inlet. A fuel-air mixture channel is provided between the fuel-air mixture outlet and the fuel-air mixture inlet. A lubricant guide is provided along components to be lubricated, such that the lubricant circuit is connected particularly effectively to the fuel supply of the internal combustion engine. A removal device for fuel with a recess which receives fuel and supplies the lubricant guide is provided between the fuel-air mixture outlet and the fuel-air mixture inlet.

Motor-operated tool

A drive system for a tool, particularly a chain saw, includes a fresh air inlet and an intake manifold arranged after the fresh air inlet in the flow direction of the fresh air that opens into a carburettor. A combustion engine is provided that is arranged after the carburettor in the flow direction of an air-fuel mixture produced in the carburettor, in which the carburettor is exposed to a lower level of thermal stress. At least one heat conducting cooling vane is connected to the carburettor and protrudes outwards into direct contact with the ambient fresh air.

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Hamburg, Germany

Sascha Kolossow