Fuel controller

Details Fuel controller Fuel controller

1989-03-14

1990-04-03

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123520, F02D 4114, F02M 2508

Patent

active

049131214

ABSTRACT:
The invention relates to a novel fuel controller of an internal combustion engine. In particular, it relates to a novel fuel controller which securely corrects characteristic variation with time of air-flow sensor used for controlling flow of fuel. The fuel controller embodied by the invention incorporates a memory which stores the negative feedback correction value of air-fuel ratio or the value related to it at the flow-volume point representing variation of characteristic of air-flow sensor or at an adjacent point of it so that the basic volume needed for controlling flow of fuel can be corrected by applying the content of memory. As a result, even if characteristic of the air-flow sensor varies, the system can achieve satisfactory control condition. The fuel controller inhibits renewal of the study on the negative feedback correction value for the predetermined period in accordance with the opening/closing condition of the purge-control valve. As a result, the fuel controller can securely and constantly perform satisfactory fuel-flow control operation without being influenced by erroneous air-fuel ratio caused by presence of purged gas.

REFERENCES:
patent: 4130095 (1978-12-01), Bowler et al.
patent: 4467769 (1984-08-01), Matsumura
patent: 4530333 (1985-07-01), Nishimura
patent: 4817573 (1989-04-01), Yamada et al.

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