Electronic control apparatus for an internal combustion engine

Details Electronic control apparatus for an internal combustion engine Electronic control apparatus for an internal combustion engine

1993-02-24

1994-05-31

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

F02D 4102

Patent

active

053159799

ABSTRACT:
An electronic control apparatus for an internal combustion engine includes a microprocessor for calculating an atmospheric pressure value by using an arithmetic formula in which the ratio of a charging efficiency obtained by an intake air flow rate to a memorized set value is used, wherein the microprocessor calculates the atmospheric pressure value when a steady operation detecting means detects the operational condition of the engine to be a steady operation for a first predetermined period of time, and uses the calculated atmospheric pressure value in order to control the engine only when the steady operation detecting means detects the engine to be the steady operation for a second predetermined period of time.

REFERENCES:
patent: 4582031 (1986-04-01), Janetzke et al.
patent: 4913121 (1990-04-01), Shimomura et al.

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