Three-level regulation type novel carburetor

Abstract

The invention relates to a three-level regulation type novel carburetor for cars and motorcycles and belongs to the technical field of machine manufacturing. A valve needle in linkage with a throttle valve is added to the main spraying pipe and the main metering jet of a retaining plate throttle valve type carburetor for a car, the diameters and conicity of the section, at the main spraying pipe, of the valve needle and the section, at the main metering jet, of the valve needle are different, so that the gap cross sections of a main spraying pipe orifice and the main metering jet can be increased along with the increasing of the openness of the throttle valve. Due to the two cross sections are increased, oil supply is increased to adapt to the situation that the increasing of the openness of the throttle valve requires more oil. By changing the diameters and conicity of the sections, at the main spraying pipe and the main metering jet, of the valve needle, the gap cross sections, corresponding to the openness of the throttle valve, at the main spraying pipe orifice and the main metering hole can be changed, two-level regulation of the oil supply at the main spraying pipe orifice and the main metering jet can be achieved, single-level regulation of old carburetors is changed into three-level regulation, oil supply amount of the cars and large-displacement motorcycles under various working conditions can be controlled precisely, and 'energy conservation and emission reduction' can be achieved. For plunger throttle valve type carburetors of medium-small-displacement motorcycles, the original valve needle is lengthened to reach the lower side of the main metering jet so as to form the three-level regulation type carburetor, and the working principles and energy conservation and emission reduction effect of the energy conservation and emission reduction are identical with the retaining plate throttle valve type carburetor.

Description

Technical field: [0001] The invention belongs to the technical field of machinery manufacturing, and relates to a three-stage control type novel carburetor for automobiles and motorcycles. Background technique: [0002] In today's era when people are pursuing convenience, speed, and developed transportation, automobiles and motorcycles have become important means of transportation commonly used at home and abroad. As far as China alone is concerned, there are more than 200 million automobiles in use, and motorcycles in use In addition, 20 million cars and 5 million motorcycles are newly produced every year. These vehicles that use fuel oil consume about 500 million tons of fuel oil each year, worth about 5 trillion yuan. However, the data show that the proven oil reserves in the world are only enough for about one hundred years. Now in the stage of global energy shortage, especially in my country, the situation is even more serious: that is, my country is a big importer of...

AI Technical Summary

Problems solved by technology

The old-style carburetor and the currently widely used electronic fuel injection fuel supply are all single-stage regulation fuel supply. Due to the limitation of the number of regulation stages, the control accuracy is not high, so the thermal efficiency of fuel oil is not high, exhaust emissions exceed the standard, and pollution Atmospheric environment and other issues

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