Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1995-12-08
1996-10-08
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123520, F02M 2508
Patent
active
055620833
ABSTRACT:
A fuel emission control device for an engine comprises an adsorbent for temporarily adsorbing fuel vapor therein. A canister for housing the adsorbent therein is connected to a fuel tank via a fuel vapor passage, through which fuel vapor in the fuel tank is introduced into the canister. The canister is also connected to an intake passage downstream of a throttle valve via a purge passage, through which fuel vapor adsorbed in the adsorbent is purged into the intake passage. When an amount of fuel vapor to be introduced to the canister becomes larger, the effective volume of the adsorbent interposed between the fuel vapor passage and the purge passage is made larger.
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Moulis Thomas N.
Toyota Jidosha & Kabushiki Kaisha
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