Controller for internal combustion engine

Details Controller for internal combustion engine Controller for internal combustion engine

2009-01-14

2010-12-28

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Diverse fuel supply

C123S00100A, C123S467000

Reexamination Certificate

active

07856966

ABSTRACT:
When an estimated alcohol concentration is higher than a specified concentration, an operation time of an engine is cumulated to obtain an alcohol cumulative operating time (ACOT). When the ACOT exceeds a specified time and a feedback correction quantity of a fuel injection quantity exceeds a specified quantity, a computer estimates that a deposit quantity exceeds a permissible value to notify the driver to refuel a fuel tank with gasoline. After fueling with gasoline, a cleaning agent contained in the gasoline removes the deposit accumulated on a fuel injector. As a result, a variation in fuel injection quantity due to deposit on the fuel injector can be avoided, and a deterioration in exhaust gas emission and drivability can be avoided.

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Bergström, Kjell, et al., “The New ECOTEC Turbo BioPower Engine from GM Powertrain—Utilizing the Power of Nature's resources”, 28 Internationales Wiener Motorensymposium, 2007, 5 pages.

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