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1. WO2014129049 - FUEL-CETANE-NUMBER ESTIMATION METHOD AND DEVICE

Publication Number WO/2014/129049
Publication Date 28.08.2014
International Application No. PCT/JP2013/083190
International Filing Date 11.12.2013
IPC
F02D 45/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
45Electrical control not provided for in groups F02D41/-F02D43/98
F02D 21/08 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
21Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
06peculiar to engines having other non-fuel gas added to combustion-air
08the other gas being the exhaust gas of engine
F02D 41/40 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
38of the high pressure type
40with means for controlling injection timing or duration
CPC
F02D 2200/0612
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2200Input parameters for engine control
02the parameters being related to the engine
06Fuel or fuel supply system parameters
0611Fuel type, fuel composition or fuel quality
0612determined by estimation
F02D 41/0007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
0002Controlling intake air
0007for control of turbo-charged or super-charged engines
F02D 41/0025
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
0025Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
F02D 41/0072
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
0025Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
0047Controlling exhaust gas recirculation [EGR]
0065Specific aspects of external EGR control
0072Estimating, calculating or determining the EGR rate, amount or flow
F02D 41/1461
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
02Circuit arrangements for generating control signals
14Introducing closed-loop corrections
1438using means for determining characteristics of the combustion gases; Sensors therefor
1444characterised by the characteristics of the combustion gases
146the characteristics being an NOx content or concentration
1461of the exhaust gases emitted by the engine
F02D 41/401
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
38of the high pressure type
40with means for controlling injection timing or duration
401Controlling injection timing
Applicants
  • 三菱重工業株式会社 MITSUBISHI HEAVY INDUSTRIES, LTD. [JP]/[JP]
Inventors
  • 山本 高之 YAMAMOTO, Takayuki
Agents
  • 誠真IP特許業務法人 SEISHIN IP PATENT FIRM, P.C.
Priority Data
2013-03339322.02.2013JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FUEL-CETANE-NUMBER ESTIMATION METHOD AND DEVICE
(FR) DISPOSITIF ET PROCÉDÉ D'ESTIMATION DE L'INDICE DE CÉTANE D'UN CARBURANT
(JA) 燃料セタン価推定方法及び装置
Abstract
(EN) The purpose of the present invention is to provide a fuel-cetane-number estimation method and device which can be implemented using a simple and inexpensive configuration whilst inhibiting outbreak of accidental fire when in a combustion state. In this fuel-cetane-number estimation method, a map specifying a relationship between cetane number and a control parameter at which NOx concentration in exhaust gas reaches a prescribed value is prepared in advance. The control parameter is variably controlled, and the transition of NOx concentration in the exhaust gas from an internal combustion engine is detected to obtain the control parameter for the internal combustion engine when the NOx concentration has reached the prescribed value, and a cetane number corresponding to the control parameter is estimated on the basis of the map.
(FR) La présente invention a pour objet un dispositif et un procédé d'estimation de l'indice de cétane d'un carburant qui peuvent être mis en œuvre à l'aide d'une configuration simple et bon marché tout en empêchant un début de feu accidentel lors d'un état de combustion. Dans ce procédé d'estimation de l'indice de cétane d'un carburant, un abaque indiquant la relation entre l'indice de cétane et un paramètre de réglage auquel la concentration en NOx dans du gaz d'échappement atteint une valeur prescrite est préparée à l'avance. Le paramètre de réglage est réglé de façon variable et la variation de la concentration en NOx dans le gaz d'échappement provenant d'un moteur à combustion interne est détectée pour obtenir le paramètre de réglage pour le moteur à combustion interne lorsque la concentration en NOx a atteint la valeur prescrite et un indice de cétane correspondant au paramètre de réglage est estimé sur la base de l'abaque.
(JA)  燃焼状態に失火を発生させることなく、簡易且つ安価な構成で実施可能な燃料セタン価推定方法及び装置を提供することを目的とし、本発明の燃料セタン価推定方法は、排ガスのNOx濃度が所定値に達する制御パラメータとセタン価との関係を規定するマップを予め用意しておく。そして、制御パラメータを可変に制御して、前記内燃機関の排ガスのNOx濃度の推移を検出することによって、NOx濃度が前記所定値に達した際の前記内燃機関の制御パラメータを求め、当該制御パラメータに対応するセタン価をマップに基づいて推定する。
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