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:
Apr. 20, 1982
Filed:
Jul. 22, 1980
Hitachi, Ltd., Tokyo, JP;
Abstract
An ignition timing controller for a supercharged internal combustion engine is mounted on a distributor housing and has a diaphragm responsive to variations in the pressure in the intake passage of the engine. The diaphragm carries a rod operatively connected at one end to an ignition signal generating means disposed in the distributor housing. When the pressure in the intake passage is increased beyond the atmospheric pressure level, the diaphragm is deformed in the ignition timing retarding direction against a compression coil spring, whereas when the pressure in the intake passage is decreased beyond the atmospheric pressure level, the diaphragm is deformed in the ignition timing advancing direction against another compression coil spring or springs. All the springs are disposed on the side of the diaphragm remote from the distributor housing whereby the strokes of the rod and the set loads of the springs on the diaphragm can be easily adjusted after the ignition timing controller is mounted on the distributor housing.