Measuring and testing – Simulating operating condition – Marine
Patent
1996-07-30
1997-05-13
Dombroske, George M.
Measuring and testing
Simulating operating condition
Marine
73 497, 123518, 123520, 364431052, F02M 2508, F02D 4122, G01M 1500
Patent
active
056294778
ABSTRACT:
A fuel vapor treating device that collects fuel vapor produced in a fuel tank and treats the vapor without releasing it into the atmosphere. The treating device is provided with a canister that collects the fuel vapor through a vapor line. A vapor control valve provided in the canister adjusts the flow of fuel vapor directed toward the canister from the tank. A purge line connects the canister to an intake passage of an engine. The fuel collected in the canister is purged into the intake passage through the purge line. A purge control valve provided in the purge line adjusts the flow rate of the fuel flowing through the purge line. A three-way valve selectively switches the section which the pressure sensor is connected to between the tank side and the canister side. An electronic control unit (ECU) controls the purge control valve and the three-way valve. The ECU performs testing of the sealing of the tank side and the canister side based on the tank pressure and the canister pressure, which are detected by the pressure sensor. When the purge control valve should be opened causing the fuel in the canister to be purged into the intake passage, the ECU determines that the purge control valve is closed and malfunctioning if the canister pressure is positive with respect to a predetermined reference value and is free from pulsation.
REFERENCES:
patent: 5143035 (1992-09-01), Kayanuma
patent: 5158054 (1992-10-01), Otsuka
patent: 5245973 (1993-09-01), Otsuka et al.
patent: 5253629 (1993-10-01), Fornuto et al.
patent: 5295472 (1994-03-01), Otsuka et al.
patent: 5315980 (1994-05-01), Otsuka et al.
patent: 5333589 (1994-08-01), Otsuka
patent: 5425344 (1995-06-01), Otsuka et al.
patent: 5437256 (1995-08-01), Woletz et al.
patent: 5443051 (1995-08-01), Otsuka
patent: 5495749 (1996-03-01), Dawson et al.
Dombroske George M.
Toyota Jidosha & Kabushiki Kaisha
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