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. 24, 2012
Filed:
Jan. 26, 2009
Filippo Parisi, Turin, IT;
Ivan Pelizzoni, Turin, IT;
Eugenio Pisoni, Turin, IT;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
At each engine cycle, nearby the TDCC, an injector is driven so as to perform a fuel injection sequence according to a predetermined pattern (A-Z), including a plurality of successive, separate fuel injection pulses (pulse-pulse N) having respective predetermined durations. The start of the first injection pulse (Pulse) of the sequence is defined as a predetermined angular distance from the TDCC. For each injection pulse (pulse-pulse N) following the first one (pulse) the respective start is selectively determined either as a time distance from the end of the immediately preceding injection pulse (pulse-pulse N−1) or as an angular distance from the relevant TDCC, in dependence on the instantaneous value of at least one predetermined parameter.