Fuel tank venting system for a vehicle with an internal combustion engine
First Claim
1. A fuel tank venting system for a vehicle with an internal combustion engine having an air intake duct, said system including a tank, an adsorption filter in communication with said tank by a connecting line, a venting line extending between said adsorption filter and said air intake duct and including a regeneration valve, and a bypass line disposed in parallel with a section of said venting line and including a pump for pumping air from said adsorption filter to said air intake duct, and said section of said venting line which is bypassed by said bypass line including a check valve.
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Accused Products
Abstract
In a fuel tank venting system for a vehicle with an internal combustion engine having an air intake duct and an adsorption filter in which fuel vapors are adsorbed, a venting line extends from the adsorption filter to the air intake duct and includes a regeneration valve, and a bypass line is disposed in parallel with a section of the venting line and includes an air pump for pumping air from the adsorption filter to the air intake duct to provide for venting air flow particularly when the engine is operating under a high load where little vacuum is generated in the air intake duct.
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Citations
10 Claims
- 1. A fuel tank venting system for a vehicle with an internal combustion engine having an air intake duct, said system including a tank, an adsorption filter in communication with said tank by a connecting line, a venting line extending between said adsorption filter and said air intake duct and including a regeneration valve, and a bypass line disposed in parallel with a section of said venting line and including a pump for pumping air from said adsorption filter to said air intake duct, and said section of said venting line which is bypassed by said bypass line including a check valve.
- 5. A fuel tank venting system for a vehicle with an internal combustion engine having an air intake duct, said system including a tank, an adsorption filter in communication with said tank by a connecting line, a venting line extending between said adsorption filter and said air intake duct and including a regeneration valve, a suction nozzle disposed in said venting line and a bypass line connected to said air intake duct and extending to said suction nozzle, and a pump disposed in said bypass line for operating said suction nozzle to draw gas out of said adsorption filter.
- 9. A fuel tank venting system for a vehicle with an internal combustion engine having an air intake duct, said system including a tank, an adsorption filter in communication with said tank by a connecting line, a venting line extending between said adsorption filter and said air intake duct and including a regeneration valve, said venting line having a line section extending parallel to said air intake duct and a drive arrangement disposed between said line section and said air intake duct.
Specification