Method for determining the cetane number cn of fuel

A cetane number and fuel technology, which is used in fuel injection control, combustion engines, internal combustion piston engines, etc., can solve problems such as low quality and inaccuracy, and achieve high accuracy and improve quality or accuracy.

Inactive Publication Date: 2010-06-09
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Indirect measurements have greater imprecision due to the principle used, i.e. are of lower quality than direct measurements

Method used

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  • Method for determining the cetane number cn of fuel
  • Method for determining the cetane number cn of fuel
  • Method for determining the cetane number cn of fuel

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0087] refer to figure 1 and figure 2 The invention is described in more detail below.

[0088] figure 1 An embodiment of an internal combustion engine implementing the method is schematically shown. The internal combustion engine has an intake pipe 4 that supplies fresh air or a fresh mixture to cylinders 3 and an exhaust pipe 2 that discharges hot combustion gases.

[0089] The internal combustion engine is equipped with a supercharging device, the turbine 5 a of an exhaust gas turbocharger 5 being arranged in the exhaust pipe 2 and the associated compressor 5 b being arranged in the intake pipe 4 . Furthermore, for the treatment of exhaust gas, two exhaust gas treatment systems 6a, 6b are provided downstream of the turbine 5a.

[0090] Such as figure 1 As is known, a sensor 1 is arranged downstream of the turbine 5a and upstream of the two exhaust gas treatment systems 6a, 6b, by means of which the concentration C of the exhaust gas constituents is detected by measure...

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PUM

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Abstract

The invention relates to a method for determining the cetane number CN of fuel. The fuel is injected into at least one cylinder (3) in an explosive motor with engine control system for combustion; and the exhaust is discharged from the at least one cylinder (3) by at least one exhaust pipe (2). A method is provided for determining the cetane number CN of fuel in the explosive motor operation more accurately than the current known methods with effective cost; the method comprises: using the sensor (1) provided in at least one exhaust pipe (2); measuring and detecting the concentration C of exhaust component; using the concentration C as the input variable of characteristic graph stored in the engine control system; and reading out the cetane number CN of the used fuel from the characteristic graph as the output variable.

Description

technical field [0001] The invention relates to a method for determining the cetane number CN of a fuel injected into at least one cylinder of an internal combustion engine having an engine control system for combustion, the exhaust gas being discharged from the at least one cylinder through at least one exhaust pipe. Background technique [0002] Within the scope of the present invention, the term "internal combustion engine" includes diesel engines, as well as hybrid internal combustion engines. Due to the limited presence of mineral oils as raw materials for obtaining fuels, the use of alternative fuels, and thus the use of hybrid internal combustion engines or hybrid combustion methods, is increasingly considered helpful in achieving the relevant goals. Thus within the scope of the present invention essentially all fuels with which diesel engines are operated may be denoted diesel fuel or fuel. [0003] Conventional diesel engine methods are determined in this case by a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00
CPCF02D41/0025F02D2200/0612F02D41/1456F02D41/401F02D41/12F02D19/0649F02D41/1439F02D41/1459F02D41/146F02D19/088Y02T10/30
Inventor 亚西尔·雅各布马修·施奈德
Owner FORD GLOBAL TECH LLC
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