Fuel tank cap and fuel tank port structure
A fuel tank cover and fuel tank port technology is applied in the field of fuel tank cover and fuel tank port ventilation structure, which can solve the problems of strict requirements for fuel tank sealing, complex structure, failure of oil and gas processors, etc. Effect
Inactive Publication Date: 2011-06-22
CHINA JIALING IND GROUP
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Problems solved by technology
The foreign control and purification device has a complex structure and strict requirements on the sealing of the fuel tank; the domestic control and purification device adopts a two-way control valve that uses diaphragm slits to complete negative pressure closing and positive pressure opening, but its implementation and feasibility have not been seen.
At present, in order to meet the emission regulations and standards, most of the fuel vapor in the fuel tank of motor vehicles uses an external carbon tank or other oil and gas processors to treat the oil and gas, but the oil and gas processor will fail when the oil is soaked for a long time
Method used
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Embodiment Construction
[0021] see Figure 4 , the structure of the fuel tank cap and the fuel tank port in the present invention, including the fuel tank body and the fuel tank cap, is characterized in that: an oil-gas separation gasket, an oil-gas separation chamber 5 surrounded by the oil-gas separation gasket and the fuel tank cap, and a The oil and gas collection cavity 7 formed by the oil tank cover 8, the oil and gas separation gasket 6 and the oil tank port.
[0022] In this embodiment, the present invention adopts the following structure to achieve the purpose.
[0023] 1. In addition to the sealing effect of the oil-gas separation gasket 6, its special streamlined shape acts as a buffer for the fuel in the fuel tank, preventing the fuel in the fuel tank from oscillating greatly during the operation of the motor vehicle and causing the fuel to oscillate into the oil-gas separation chamber 5 , even if the oil is vibrated into the oil-air separation chamber 5 in this streamlined shape, it wil...
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The invention provides a fuel tank cap and fuel tank port structure used for fuel tanks of all motors, which ensures that both the requirements of leak tightness and emission state standards and the application requirements for protecting an activated carbon canister and other oil processor are met, comprises a fuel tank body and a fuel tank cap, and is characterized in that an oil-gas seperatinggasket, an oil-gas seperating chamber formed by an oil-gas separating gasket and the fuel tank cap and an oil-gas collecting chamber formed by the fuel tank cap, an oil-gas separating gasket and fueltank port are adopted. Compared with the prior art, the invnetion has the advanategs that the absolute seal between the oil tank and fuel tank cover is achieved, the oil can not enter an oil-gas separator during motor running process, and t standard emission is realized.
Description
technical field [0001] The present invention relates to a fuel tank, in particular to a fuel tank cover and a fuel tank opening ventilation structure for all motor vehicle fuel tanks. Background technique [0002] When the motor vehicle fuel tank is at ambient temperature, the evaporating gas emitted by the motor vehicle pollutes the environment very seriously, and the pollution of the motor vehicle exhaust to the environment is very serious, and the former is often ignored by people because of its invisibility. With the acceleration of the industrialization process, the number of motor vehicles in the world has increased sharply. In some countries, the control of evaporative gas in motor vehicle fuel tanks has been solved through legislation. recycle and re-use. In some foreign countries, a device composed of a purifier, a one-way control valve, and a condenser is used to control and purify the oil and gas discharge of the fuel tank. In China, there are patent applications...
Claims
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IPC IPC(8): B60K15/04B60K15/05
Inventor 朱军孙玉臻
Owner CHINA JIALING IND GROUP