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:
Oct. 09, 2018
Filed:
Mar. 29, 2017
Electrojet Technologies, Inc., Brighton, MI (US);
Kyle E. E. Schwulst, Whitmore Lake, MI (US);
Jesse Beeker, Novi, MI (US);
ElectroJet Technologies, Inc., Brighton, MI (US);
Abstract
A system is provided for automatically shutting down an engine of a portable or handheld device in response to the engine operating while in an enclosed space, such as a garage, shed, room, etc. to prevent dangers associated with carbon monoxide accumulating in the enclosed space. The engine has an oxygen sensor in its exhaust that is configured to detect the presence or absence of oxygen in the exhaust. A fuel injector injects fuel for combustion within the combustion chamber. The oxygen sensor may be a switch producing an associated frequency indicating the presence or absence of oxygen. This frequency can control the fuel injection duration such that as the frequency of switching decreases, the injector injects less fuel. If the frequency continues to decrease even while injection is reduced, the controller can assume the engine is operating in confined spaces and can shut down the engine.