Carbon tank three-way connecting device and connecting structure thereof in supercharged gasoline motor car

Abstract

The invention provides a carbon tank three-way connecting device and a connecting structure thereof in a supercharged gasoline motor car. The invention belongs to the technical fields of engineering components and mechanical engineering and solves the problems that desorption measures adopted by the existing supercharged engine carbon tank cannot meet the desorption requirements of the carbon tank and easily lead to the leakage faults. The carbon tank three-way connecting device comprises a connecting body provided with three connectors, wherein a first connector and a second connector are connected through a one-way valve I; the second connector and a third connector are communicated through a Venturi channel; and the first connector is connected with the small port of the exit divergent part of the Venturi channel through a one-way valve II. The connecting structure is characterized in that the first connector of the carbon tank three-way connecting device is connected with the carbon tank through a carbon tank control valve; the second connector of the carbon tank three-way connecting device is communicated with an intake manifold; and the third connector of the carbon tank three-way connecting device is communicated with an air inlet of a supercharger. The carbon tank three-way connecting device has the advantages of simple structure, scientific and reasonable design and stable performance.

Description

technical field [0001] The invention belongs to the technical field of engineering components, and relates to a connection device, in particular to a carbon tank tee connection device. [0002] The invention also belongs to the technical field of mechanical engineering, and relates to a connection structure, in particular to a connection structure of a carbon tank tee connection device in a supercharged gasoline vehicle. Background technique [0003] With the rapid development of the automobile industry, the number of automobiles is increasing. The fuel of most small cars is gasoline; gasoline is volatile, and the fuel in the fuel tank will quickly volatilize and increase the pressure inside the fuel tank. When the pressure reaches a certain value, there will be certain dangers, so people try to balance the pressure. At first, the fuel tank cap was made into a pressure limiting valve. When the pressure was higher than a certain value, the pressure limiting valve opened to s...

AI Technical Summary

Problems solved by technology

[0008] Although the above-mentioned supercharged engine canister desorption measures have certain effects, there are still certain defects: 1. When the vehicle is running at high speed, it mainly relies on the negative pressure at the air inlet of the supercharger to desorb the canister, while The negative pressure value here is related to the design resistance of the intake system, and the design value of the intake resistance of the intake system is generally about 3kPa, and the large displacement model is generally 7kPa, so the negative pressure at the intake port of the supercharger is generally -3kPa, up to -7kPa, usually cannot meet the desorption requirements of the carbon tank

2. When the vehicle is running at low speed (such as urban working conditions), the negative pressure in the engine intake manifold disappears because the supercharger is already working. The negative pressure generated at the air inlet is very small, which cannot overcome the desorption resistance of the carbon canister, causing the canister to be desorbed for a long time and lose its efficacy

3. There is a three-way joint and two one-way stop valves in the pipeline, and the number of joints is large, which is prone to leakage faults

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