Low-emission gasoline grass trimmer

Abstract

The invention provides a low-emission gasoline grass trimmer. According to the improved low-emission gasoline grass trimmer, two narrowed auxiliary vent holes which are used for a left box seat and a right box seat respectively, an air scavenging channel opening wedge turbulence returning piece and two auxiliary skirts of a piston are used in cooperation with one another. A spraying nozzle (70a) with four branches is arranged on a carburetor of the low-emission gasoline grass trimmer so that atomization can be facilitated and the unexpected emission reduction and standard reaching effect can be achieved. A grass trimming head (54) with a grass cutting and trimming steel wire rope (54b) is arranged on a cutter, a nylon wire is replaced by the steel wire rope, and therefore the long-lasting cutting is facilitated. An outer protective cover (73) which is arranged on an inner protective cover (60) is arranged on the cutter, a long grass pressing wheel (74) with the roller length equal to the grass trimming diameter is arranged on the outer protective cover of the cutter, and therefore grass pressing, soil moisture conservation and grass pattern forming are facilitated. A cutter disc (64) with internal saw teeth (642) is arranged in the cutter, outer cutting edges (641) of the peripheries of four extending knives are respectively provided with a plurality of outer sawing teeth (64a), and the number of the internal saw teeth (642) is also four, the internal saw teeth (642) are respectively provided with a plurality of teeth, and therefore the condition that the grass is too hard to cut is avoided. The quality and the usability of the low-emission gasoline grass trimmer are improved.

Description

technical field [0001] The invention provides a lawn trimmer and a grass trimmer used for cutting shrubs in places such as flower beds, courtyards, parks and roads, and in the shape of flowers and trees, and belongs to the field of garden machines. Using the innovative method of indirect discharge after passing through the 1.5-meter catalase muffler pipe, in order to expand the use, a mowing head with cutting stacks and mowing steel wires, a cutting disc with internal and external serrations and carburetor are installed on the brush cutter The four-pronged nozzle of the device, and the long grass pressing wheel for easy grass pressing and moisture retention and grass pattern, to form a low-emission gasoline brush cutter. Combustion chamber with function wave and matching with ignition device for internal combustion engine with movable receiving electrode and micro-moving discharging electrode, double auxiliary skirt on piston skirt to reduce hydrocarbon emission, and logarithm...

AI Technical Summary

Problems solved by technology

In particular, the fuel economy of the two-stroke gasoline engine is worse than that of the four-stroke gasoline engine, and the hydrocarbon emissions in the tail gas often exceed the standard

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