Vehicle engine refueling detection apparatus and method and fuel

Details Vehicle engine refueling detection apparatus and method and fuel Vehicle engine refueling detection apparatus and method and fuel

1995-04-13

1996-08-06

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123510, 137557, 137558, F02D 4500

Patent

active

055423949

ABSTRACT:
A value for a quantity of fuel remaining in a fuel tank is stored when a key switch is switched off. Refueling while an engine is stopped is detected when a difference between a remaining fuel quantity value for when the key switch is switched on and the stored remaining fuel quantity value for when switched off is equal to or greater than a predetermined proportion of the stored remaining fuel quantity value for when switched off. When refueling has been carried out, the fuel property is newly detected based on engine operating conditions, while when refueling has not been carried out, the fuel property is considered to be unchanged, and a fuel supply quantity is controlled in accordance with a fuel property for the previous time.

REFERENCES:
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patent: 5029622 (1991-07-01), Mutter
patent: 5035219 (1991-07-01), Ohkumo et al.
patent: 5090389 (1992-02-01), Oota
patent: 5301648 (1994-04-01), Uchinami
patent: 5331994 (1994-07-01), Bryan, III et al.
patent: 5383500 (1995-01-01), Dwars et al.

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