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:
Jul. 02, 1991
Filed:
Feb. 09, 1990
Keisuke Daikoku, Shizuoka, JP;
Kazuhiro Umehara, Shizuoka, JP;
Suzuki Jidosha Kogyo Kabushiki Kaisha, Shizuoka, JP;
Abstract
An apparatus for controlling an ignition timing for a marine engine has a temperature sensor for detecting a cold or warm-up state of the engine and for outputting an ON/OFF signal, and has an ignition timing controller for receiving the signal from the temperature sensor, for receiving signals representing an engine rotational speed and a throttle opening degree which are sent from other sensors, and for setting an optimum ignition timing. The ignition timing controller includes a spark advance control arrangement for setting the ignition timing to a state in which it is spark advanced by a predetermined angle when a cold signal from the temperature sensor is input, a first spark delay control arrangement for immediately setting the ignition timing to a spark delay state when the engine rotational speed reaches an unshiftable rotational speed after completion of the operation of said spark advance, and a second spark delay control arrangement for immediately setting the ignition timeing to the spark delay state when a warm-up signal is input from the temperature sensor.