Method and arrangement for setting an idle air actuator

Details Method and arrangement for setting an idle air actuator Method and arrangement for setting an idle air actuator

1991-12-13

1992-11-10

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123339, 123320, F02D 4112, F02D 4116

Patent

active

051615029

ABSTRACT:
The invention is directed to a method for adjusting the idle air actuator in the intake system of an internal combustion engine during idle or overrun operation, the method comprising the steps of: transferring the idle air actuator into a non-driven position in a load area outside the idle or overrun operation; continuously monitoring outside of idle and overrun operation as to whether such a change of operating variables takes place which makes a transfer into idle or overrun operation probable; and, if so, driving the idle air actuator with a value which is determined so that the idle air actuator assumes that position, which, when reaching idle or overrun operation, will presumably by substantially the correct position. The method of the invention affords the advantage that the power loss for driving the idle air actuator is considerably reduced without disturbances (caused by intermittent non-driving of the actuator) occurring in the performance of the engine during transitions from the driven into the non-driven state and vice versa.

REFERENCES:
patent: 3868933 (1975-03-01), Bigalke et al.
patent: 4438744 (1984-03-01), Hasegawa
patent: 4465043 (1984-08-01), Denz et al.
patent: 4597047 (1986-06-01), Deutsch

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