Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1993-01-15
1994-05-31
Kamen, Noah P.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123198D, F02M 3302
Patent
active
053159802
ABSTRACT:
A malfunction detection apparatus for detecting a malfunction in an evaporative fuel purge system, which malfunction detection apparatus is able to suppress a fluctuation of an air-fuel ratio. A negative pressure inside an intake passage is introduced into the evaporative fuel purge system. The existence
onexistence of a malfunction in the evaporative fuel purge system is determined by using pressure values inside the evaporative fuel purge system which values are detected and supplied by a pressure detecting unit. The apparatus is provided with an air-fuel ratio fluctuation suppressing unit for suppressing a fluctuation of the air-fuel ratio of air suctioned into an engine when introducing the negative pressure into the evaporative fuel purge system.
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Hyodo Yoshihiko
Itoh Takaaki
Kidokoro Toru
Osanai Akinori
Otsuka Takayuki
Kamen Noah P.
Moulis Thomas N.
Toyota Jidosha & Kabushiki Kaisha
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