System for detecting fully closed state of the throttle valve fo

Details System for detecting fully closed state of the throttle valve fo System for detecting fully closed state of the throttle valve fo

1995-12-29

1996-12-24

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

12333923, 731173, F02D 4112, F02D 4116

Patent

active

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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