Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1993-01-19
1993-12-07
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123198D, F02M 3302, F02B 7700
Patent
active
052675475
ABSTRACT:
A tank internal pressure-detecting device for an internal combustion engine having an evaporative emission control system for controlling purging of evaporative fuel generated in a fuel tank thereof into an intake system thereof. An ECU interrupts purging of evaporative fuel by the evaporative emission control system for a predetermined period of time after the engine is started. The ECU causes control valves of the evaporative emission control system to open the interior of the fuel tank to the atmosphere, and stores a value of pressure within the fuel tank detected by a tank internal pressure sensor as a reference value while the purging is being interrupted and at the same time the interior of the fuel tank is opened to the atmosphere. The ECU corrects an output value of the tank internal pressure sensor, based upon the reference value stored.
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Chikamatsu Masataka
Kuroda Shigetaka
Maruyama Hiroshi
Sawamura Kazutomo
Yamanaka Masayoshi
Cross E. Rollins
Honda Giken Kogyo Kabushiki Kaisha
Moulis Thomas N.
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