System for detecting fully closed state of the throttle valve fo

Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode

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12333923, 731173, F02D 4112, F02D 4116

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055865348

ABSTRACT:
A throttle valve full-closure detecting system for an internal combustion engine which is capable of surely detecting a fully closed state of a throttle valve and further of preventing the occurrence of troubles when an accelerator pedal is released from the state where the driver lightly places his foot thereon. The throttle valve full-closure detecting system comprises a full-closure detecting unit 6 for detecting the fully closed state of the throttle valve 1, and a throttle sensor 5 for sensing a throttle opening degree .theta. of the throttle valve 1. Further included in the system are a throttle full-closure detecting and storing unit 11 for averaging the throttle opening degrees to store it as a full-closure throttle opening degree o when the full-closure detecting unit 6 detects the fully closed state of the throttle valve 1 and a a throttle valve full-closure decision unit 12 for detecting that the throttle valve 1 is in the fully closed state when the full-closure detecting unit 6 detects the fully closed state of the throttle valve 1 and the throttle opening degree is below an opening degree obtained by adding a predetermined value to the full-closure throttle opening degree.

REFERENCES:
patent: 5003816 (1991-04-01), Furuyama
Patent Abstracts Of Japan, [M-1441], vol. 17, No. 362, p. 58, Jul. 8, 1993 & JP 5-52148, (Yamada), Mar. 2, 1993. Jul. 1993.

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