发明名称 |
METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE |
摘要 |
Methods and apparatus for operating an internal combustion engine are provided. The engine has an engine block defining a cylinder accommodating a reciprocating piston coupled to rotate a crankshaft, a fuel injector for injecting fuel inside the cylinder, and a crank position sensor positioned proximal to the crankshaft. A method includes commanding the fuel injector to perform a test fuel injection with a predetermined energizing time and using the crank position sensor to determine a crankshaft acceleration signal during the test fuel injection. The crankshaft acceleration signal is filtered and a value of an amplitude of a fundamental frequency component of the filtered crankshaft acceleration signal is determined. A correction factor of the predetermined energizing time is determined based on a difference between the determined value of the amplitude and a preset value thereof. The correction factor is used to correct an energizing time of subsequent fuel injections.
|
申请公布号 |
US2013144508(A1) |
申请公布日期 |
2013.06.06 |
申请号 |
US201213657051 |
申请日期 |
2012.10.22 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC;GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
DENTICI IGNAZIO;BASTIANELLI MICHELE |
分类号 |
F02D45/00 |
主分类号 |
F02D45/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|