Evaporative emission control system for internal combustion engi

Details Evaporative emission control system for internal combustion engi Evaporative emission control system for internal combustion engi

1993-06-14

1994-09-27

Miller, Carl S.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123525, 123553, F02M 3302, F02M 2102

Patent

active

053499344

ABSTRACT:
An evaporative fuel emission control system for an internal combustion engine has a canister connected to a fuel tank of the engine. The canister temporarily stores evaporative fuel generated from the fuel tank. The evaporative emission control system also includes a purging passage connecting the canister and a portion of an intake passage at a location downstream of a throttle valve arranged in the intake passage. An amount of evaporative fuel is increased which is generated from the fuel tank. In a preferred form, the system includes a second fuel tank arranged between the first-mentioned fuel tank and the canister. Evaporative fuel is increased by evaporating fuel in the second fuel tank.

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