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:
Jan. 19, 1999
Filed:
Apr. 10, 1996
Lawrence E Schmidt, Chillicothe, IL (US);
Wendell D Stahl, Bradford, IL (US);
Paul M Young, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An apparatus for determining the timing of an internal combustion engine having a crankshaft, a camshaft, and a plurality of cylinders each having an electronically controlled fuel injector is disclosed. A crankshaft sensing device monitors the rotation of the engine crankshaft and responsively produces a crankshaft pulsetrain. Additionally, a camshaft sensing device monitors the rotation of the engine camshaft and responsively produces a camshaft pulsetrain. An engine control receives the crankshaft and camshaft pulsetrains, and responsively determines the period of each pulse, determines the rotational position of the crankshaft and camshaft, and produces an inject signal relative to one of the crankshaft and camshaft pulsetrains to the fuel injector in order to initiate fuel injection.