JPH0220760U

JPH0220760U -

Info

Publication number: JPH0220760U
Application number: JP9934988U
Authority: JP
Priority date: 1988-07-27
Filing date: 1988-07-27
Publication date: 1990-02-13

Description

[Brief explanation of drawings]

第１図は本考案の概念的構成図、第２図は本考
案を実施した内燃機関の概略構成図、第３図は実
施例の内燃機関の電子制御装置において行われる
車速センサ異常検出処理の流れを示すフローチヤ
ート、第４図はその車速センサ異常検出処理で用
いられるマツプを表すグラフである。１……内燃機関、６……エアフロメータ、２４
……回転速度センサ、３０……車速センサ、４０
……異常警報装置、５０……電子制御装置。 Fig. 1 is a conceptual block diagram of the present invention, Fig. 2 is a schematic block diagram of an internal combustion engine implementing the present invention, and Fig. 3 is a vehicle speed sensor abnormality detection process performed in the electronic control device of the internal combustion engine of the embodiment. The flowchart shown in FIG. 4 is a graph showing a map used in the vehicle speed sensor abnormality detection process. 1... Internal combustion engine, 6... Air flow meter, 24
... Rotation speed sensor, 30 ... Vehicle speed sensor, 40
... Abnormality alarm device, 50 ... Electronic control device.

Claims

[Scope of Claim for Utility Model Registration] In a vehicle that uses an internal combustion engine as a driving force source and is equipped with a vehicle speed detection means, a means for detecting the rotational speed of the internal combustion engine, a means for detecting a load on the internal combustion engine, and a detected rotation. Rotational speed determining means for determining whether the speed is above a predetermined value; Low load determining means for determining whether the detected load is below a predetermined value determined by the rotating speed; and Vehicle speed detecting means. zero vehicle speed determination means for determining whether the detected vehicle speed is zero; An abnormality detecting device for a vehicle speed detecting means, comprising: abnormality determining means for determining that the vehicle speed detecting means is abnormal if the abnormality continues for a predetermined time or more.