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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHiroaki Muramatsu, Shinichi Kitajima, Teruo Wakashiro, Hiroshi Kitagawa, Toshikatu Takanohashi, Yoshihiko Kobayashi
Estimating the term…
An evaporative emission control system for an internal combustion engine controls purging of evaporative fuel into the intake pipe of the engine. A first control valve is arranged in a communication passage communicating between a charcoal canister and the intake pipe, for supplying the evaporative fuel to the engine at a flow rate dependent on load on the engine. A second control valve is arranged in a bypass passage bypassing the first control valve for supplying the evaporative fuel to the engine at a predetermined flow rate. When a temperature of the engine is below a predetermined value, the first control valve is closed and at the same time the second control valve is made open, to thereby supply the evaporative fuel to the engine at the predetermined i.e. small flow rate. For a predetermined time period after the engine has been warmed up, the first and second control valves are controlled in the same manner. When the engine is idling as well, the same control of the two valves is carried out.
In an evaporative emission control system for an internal combustion engine having a fuel tank, an intake passage, and a throttle valve arranged in said intake passage, said evaporative emission control system including a charcoal canister for adsorbing evaporative fuel generated from said fuel tank, a communication passage communicating between said charcoal canister and a portion of said intake passage downstream of said throttle valve, and a first control valve arranged in said communication passage for controlling supply of said evaporative fuel at a flow rate dependent on an operating parameter of said engine,
In an evaporative emission control system for an internal combustion engine having a fuel tank, an intake passage, and a throttle valve arranged in said intake passage, said evaporative emission control system including a charcoal canister for adsorbing evaporative fuel generated from said fuel tank, a communication passage communicating between said charcoal canister and a portion of said intake passage down-stream of said throttle valve, and a first control valve arranged in said communication passage for controlling supply of said evaporative fuel at a flow rate dependent on an operating parameter of said engine,
In an evaporative emission control system for an internal combustion engine having a fuel tank, an intake passage, and a throttle valve arranged in said intake passage, said evaporative emission control system including a charcoal canister for adsorbing evaporative fuel generated from said fuel tank, a communication passage communicating between said charcoal canister and a portion of said intake passage down-stream of said throttle valve, and a first control valve arranged in said communication passage for controlling supply of said evaporative fuel at a flow rate dependent on an operating parameter of said engine,
Dependencies are inferred from the claim text.