Internal-combustion engines – Charge forming device – Including means responsive to instantaneous change in engine...
Patent
1999-03-22
2000-08-15
Solis, Erick
Internal-combustion engines
Charge forming device
Including means responsive to instantaneous change in engine...
123520, 123698, F02M 700
Patent
active
061020036
ABSTRACT:
A fuel vapor concentration detecting apparatus in a lean-burn internal combustion engine detects a fuel vapor concentration and executes purge control. The apparatus includes an output fluctuation detecting module for detecting, on such an occasion that the fuel vapor is purged into an intake system of the internal combustion engine, an output fluctuation just when the fuel vapor is purged, and a concentration detecting module for calculating the fuel vapor concentration in accordance with a magnitude of the output fluctuation detected by the output fluctuation detecting module. The fuel vapor concentration in the lean-burn internal combustion engine is thus detected. A purge quantity or a state of the fuel injection is changed corresponding to the detected concentration of the fuel vapor.
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Hyodo Yoshihiko
Murai Toshimi
Takagi Naoya
Solis Erick
Toyota Jidosha & Kabushiki Kaisha
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