公开(公告)号：WO2010005651A2

公开(公告)日：2010-01-14

申请号：PCT/US2009/046049

申请日：2009-06-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.

Inventor： WANG, Yue-Yun ,  HASKARA, Ibrahim ,  KWEON, Chol-Bum M.K. ,  MATEKUNAS, Frederic Anton ,  BATTISTON, Paul Anthony

IPC: F02D45/00 ,  F02D35/00 ,  F02D1/16 ,  F02D41/40

CPC classification number: F02D41/1498 ,  F02D35/024 ,  F02D35/028 ,  F02D41/0047 ,  F02D41/009 ,  F02D2041/288

Abstract: Combustion within an internal combustion engine is diagnosed and includes monitoring crankshaft angular velocity and generating a combustion phasing value for a combustion chamber based on the crankshaft angular velocity. The combustion phasing value is compared to an expected combustion phasing value based on a predetermined start of injection crank angle and combustion phasing differences greater than an allowable combustion phasing difference are identified based on the comparison.

Abstract translation: 诊断内燃机内的燃烧，包括监测曲轴角速度，并基于曲轴角速度产生燃烧室的燃烧相位值。 基于比较，识别燃烧定相值与基于预定的喷射曲柄角开始的预期燃烧相位值，并且确定大于允许燃烧相位差的燃烧相位差。

公开(公告)号：WO2007127715A3

公开(公告)日：2007-11-08

申请号：PCT/US2007/067273

申请日：2007-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.

Inventor： MATEKUNAS, Frederic, Anton ,  BATTISTON, Paul Anthony ,  SZYMKOWICZ, Patrick, G. ,  GANGOPADHYAY, Anupam

IPC: F02D41/06

Abstract: A method for controlling operation of an internal combustion engine operating lean of stoichiometry is described. The engine comprises a multi-cylinder direct-injection engine, the engine operative in repetitive cycles each cycle comprising intake, compression, expansion, and exhaust strokes. The method comprises adapting a plurality of fuel injectors to directly inject a first and a second mass of fuel into the cylinders during each cycle. Pressure sensing devices monitor in-cylinder pressure in the cylinders during ongoing operation. The first mass of fuel is injected into one of the cylinders. A cylinder pressure ratio is determined in the cylinder subsequent to injecting the first mass of fuel based upon the monitored pressure. The first mass of fuel injected is adjusted during a subsequent cycle based upon the cylinder pressure ratio.