Andreas Stihl Ag Co. Kg

Silke Kaminski

Werner Geyer

Johannes Menzel

Axel Klimmek

Tommy Roitsch

Andreas Bähner

Christian Barth

Cornelius Gindele

Olaf Schmidt

Roland Schmidt

Ulrich Siller

Georg Kröger

Simon Klingler

Thilo Stuerzel

Ralf Blechsmidt

Markus Zauner

Georg Kroeger

Thilo STÜRZEL

A blower unit for a portable handheld blower apparatus has a housing section and a tubular receiving space, formed in the housing section, with a first axial end and a second axial end and with a longitudinal center axis. Arranged in the receiving space of the housing section is an axial blower for generating a blower air flow, the axial blower being driven by a drive motor. The receiving space has an intake opening at its first axial end and a discharge opening at its second axial end. In order to reduce operating noise, an air guide plate is arranged at an axial distance in front of the intake opening, the air guide plate having external dimensions that are greater than the external dimensions of the intake opening. An annular gap that supplies intake air is formed between the air guide plate and an outer periphery of the housing section.

Blower unit for a handheld blower apparatus

A two-stroke engine has a cylinder and a piston reciprocating in the cylinder and delimiting a combustion chamber. The piston has at least one piston recess. A crankshaft is rotatably arranged in a crankcase connected to the cylinder. A connecting rod connects piston and crankshaft. Transfer channels connect the crankcase to the combustion chamber in pre-defined piston positions. The transfer channels each have a transfer port opening into the combustion chamber. A device for supplying fuel and an air channel supplying combustion air are provided. In predetermined piston positions, the air channel is connected by the piston recess to the transfer ports. The air channel opens into the cylinder bore opposite the exhaust for the exhaust gases. The air channel, the piston recess, and the transfer channels define an air passage that provides approximately uniform distribution of air from the air channel into the transfer channels.

Two-stroke engine

Growing community of inventors

Waiblingen, Germany

Silke Kaminski