The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2001
Filed:
Dec. 10, 1998
Mikio Hamada, Handa, JP;
Satomi Wada, Handa, JP;
Aisan Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
In an ignition device for an engine,a spark plug,is operated to emit sparks with respect to the fuel-air mixture, so that the fuel-air mixture is ignited. A protrusion,provided on a flywheel,mounted on a crankshaft,is revolved with the rotation of the crankshaft,A magnet pickup,detects the passage of the protrusion,When the protrusion,passes near the magnet pickup,the magnet pickup,outputs a detection signal, in a pulse manner, having a peak value in response to the passing speed of the protrusion. When the detection signal outputted from the magnet pickup,exceeds a predetermined threshold value, the electronic control unit (ECU),operates to activate the spark plug,through an ignition coil,so that the ignition timing is advanced or delayed in accordance with the difference in rotational speed of the shaft,, i.e., of the engine