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:
Sep. 19, 1978
Filed:
Mar. 11, 1977
Applicant:
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P / ; F02P / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ; 361 91 ; 361263 ;
Abstract
To prevent application of excessive spark energy in an ignition system designed for proper firing voltages even under low-battery voltage conditions, upon rise of the battery voltage to normal or excessive values, a voltage sensing circuit, including a threshold stage, is connected to the secondary of the ignition coil to sense the secondary voltage, the threshold stage providing an output when the voltage is exceeded and blocking continued supply of power to the ignition coil of the system to thereby limit the ignition voltage.