Measuring and testing – Internal combustion engine or related engine system or... – Compression
Patent
1996-04-01
1997-04-15
Chilcot, Richard
Measuring and testing
Internal combustion engine or related engine system or...
Compression
364431051, G01M 1500
Patent
active
056211600
ABSTRACT:
An apparatus and method for determining start of fuel injection (SOI), preferably in an open nozzle fuel injection system, comprises means for obtaining injector train load data as a function of crank shaft timing, and a computer for sampling the data, performing a smoothing operation thereon, computing a first derivative of the smoothed injector train load data samples with respect to crank shaft timing, computing a maximum value of the first derivative, computing a predefined fraction of the maximum value of the first derivative, and mapping the predefined fraction of the maximum value of the first derivative to its corresponding crank shaft angle, wherein the corresponding crank shaft angle defines the crank shaft angle, measured in degrees relative to piston top dead center, at which SOI occurs. In an alternative embodiment, the smoothing operation and computation of the first derivative may be combined into a single operation.
REFERENCES:
patent: 2744407 (1956-05-01), Kruger et al.
patent: 3340728 (1967-09-01), Taylor et al.
patent: 4265200 (1981-05-01), Wessel et al.
patent: 4280659 (1981-07-01), Gaal et al.
patent: 4337650 (1982-07-01), Brandt
patent: 4378695 (1983-04-01), Oshizawa et al.
patent: 4463733 (1984-08-01), Tsai
patent: 4463901 (1984-08-01), Perr et al.
patent: 4601086 (1986-07-01), Gerlach
patent: 4713965 (1987-12-01), Kobayashi
patent: 4825373 (1989-04-01), Nakamura et al.
patent: 5042721 (1991-08-01), Muntean et al.
patent: 5076240 (1991-12-01), Perr
patent: 5220843 (1993-06-01), Rak
patent: 5301876 (1994-04-01), Swank et al.
patent: 5357924 (1994-10-01), Onishi
patent: 5359883 (1994-11-01), Baldwin et al.
patent: 5453626 (1995-09-01), DiSpigna et al.
patent: 5469737 (1995-11-01), Smith et al.
Bailey Thomas L.
Carroll, III John T.
Chilcot Richard
Cummins Engine Company, Inc.
Dombroske George M.
LandOfFree
Apparatus and method for determining start of injection in a fue does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for determining start of injection in a fue, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for determining start of injection in a fue will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-362307