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. 01, 2019
Filed:
Jul. 26, 2017
GM Global Technology Operations Llc, Detroit, MI (US);
Vicente Domenech-Llopis, Rochester Hills, MI (US);
Richard C. Peterson, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Disclosed are multi-pulse fuel injection systems, control logic for operating such systems, and direct-injection engines having multi-pulse fuel delivery capabilities. A method is disclosed for operating the fuel injection system of an internal combustion engine (ICE) assembly. The method includes a vehicle controller transmitting command signals to the fuel injectors to inject a first pilot quantity of fuel (Q) and, subsequently, inject a second pilot quantity of fuel (Q), distinct from Q, after a first dwell time between Qand Qduring a single combustion cycle of the ICE assembly. The vehicle controller also transmits command signals to the fuel injectors to inject a third pilot quantity of fuel (Q), greater than Qand Q, after a second dwell time between Qand Q, and then inject a fourth pilot quantity of fuel (Q), less than Q, after a third dwell time between Qand Qduring the combustion cycle.