Fuel evaporation control method of car, fuel evaporation control system of car and car

A control method and technology of the control system, which are applied to the charging system, engine components, machines/engines, etc., can solve the problems of work capacity attenuation, impact on service life, and high frequency of use

Active Publication Date: 2013-06-19
BEIQI FOTON MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the gasoline vapor entering the engine must pass through the carbon tank, the activated carbon in the carbon tank is conti

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  • Fuel evaporation control method of car, fuel evaporation control system of car and car

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] Only the fuel evaporation pipeline between the fuel tank and the engine is shown in the accompanying drawings of the present invention, and other irrelevant pipelines and components are not shown.

[0035] The present invention is a kind of fuel evaporation control method of automobile, and this automobile comprises engine 1, carbon canister 2 and fuel tank 3, and wherein, this method comprises:

[0036] Detect the pressure of the gasoline vapor in the fuel tank 3, when the pressure value is greater than the upper limit, the fuel tank 3 is communicated with the carbon canister 2, at this time, the gasoline vapor can enter the carbon tank from the fuel tan...

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Abstract

The invention discloses a fuel evaporation control method of a car, and further discloses a fuel evaporation control system of the car and the car. The car comprises a motor (1), a carbon tank (2) and a fuel tank (3). The method comprises that the pressure of gasoline vapor in the fuel tank (3) is detected, and when the value of the pressure is larger than the upper limit value, the fuel tank (3) is communicated with the carbon tank (2), and the gasoline vapor can enter the carbon tank (2) from the fuel tank (3). The fuel evaporation control system can selectively control the communication between the fuel tank and the carbon tank according to working conditions of the motor, and therefore activated carbon in the carbon tank is prevented from reaching an absorption saturation condition, and the gasoline vapor is prevented from leaking from a ventilating hole of the carbon tank. Therefore, not only is fuel saved, but also environment pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of fuel evaporation of automobiles, in particular to a method and system for controlling fuel evaporation of automobiles and automobiles. Background technique [0002] Because the gasoline in the fuel tank is a volatile liquid, the fuel tank is usually full of vapor at normal temperature. If the gasoline vapor causes the pressure in the fuel tank to be too high, it will be dangerous. Therefore, in order to be able to control the air pressure in the fuel tank, introduce gasoline vapor into the engine for combustion, and prevent gasoline vapor from volatilizing into the atmosphere, a carbon canister is usually arranged between the engine and the fuel tank, and activated carbon is arranged in the carbon canister. The function is to absorb gasoline vapor, the fuel tank is connected to the carbon tank, gasoline vapor can enter the carbon tank through the pipeline, and the carbon tank also has a vent to communicat...

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Application Information

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IPC IPC(8): F02M25/08
Inventor 王溪芹周定芳
Owner BEIQI FOTON MOTOR CO LTD
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