A flat-suction plunger carburetor for large-displacement competitive cross-country motorcycles

Abstract

The invention discloses a horizontal draught type plunger piston type carburetor for a large-emission competitive scrambling motorcycle. The carburetor comprises a carburetor body assembly (1), and a floater chamber assembly (2) which is mounted on the lower surface of the carburetor body assembly (1); an oil feeding system, a starting system, an idling system, a main oil system and an acceleration system are arranged in the carburetor body assembly (1). The carburetor has the beneficial effects that the structure is compact, the scrambling motorcycle can be started and run at a constant speed in an environment under a low temperature less than -40 DEG C; an accelerator can be timely responded, the acceleration for overtaking can be timely responded, the oil returning during acceleration can be effectively avoided, and the safety and reliability can be ensured.

Description

technical field [0001] The invention relates to the technical field of carburetors for competitive off-road motorcycles, in particular to a flat-suction plunger type carburetor for large-displacement competitive off-road motorcycles. Background technique [0002] A carburetor for a motorcycle is a mechanical device that mixes a certain proportion of gasoline with air under the action of the vacuum generated by the piston movement of the engine cylinder. According to the way of suction, it is divided into two types: flat suction type and diaphragm type. As a precise mechanical device, the carburetor can be called the "heart" of the engine for its important role in the engine. Its complete device should include starting system, idle speed system, oil supply system, main oil system and acceleration system. The carburetor will automatically mix the corresponding concentration according to the requirements of different working conditions of the engine, and output the correspond...

AI Technical Summary

Problems solved by technology

At present, in the domestic development and application of competitive off-road motorcycle carburetors, most of them are partially adjusted on the basis of household and road vehicles, lacking systematic consideration, and may have some performance in a certain performance, but It is impossible to realize the performance of all working conditions. The main problems that often occur are: insufficient response to rapid acceleration at low speeds, insufficient stability in overtaking acceleration, unable to achieve continuous overtaking for a long time, and the carburetor cannot continue to be stable under bumps and impacts Performance, difficult to start in extremely cold environment, difficult to start after harsh working conditions, etc.

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