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1. WO2015064527 - AUXILIARY-CHAMBER-TYPE GAS ENGINE

Publication Number WO/2015/064527
Publication Date 07.05.2015
International Application No. PCT/JP2014/078470
International Filing Date 27.10.2014
IPC
F02D 19/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
19Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
02peculiar to engines working with gaseous fuels
F02D 41/02 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
02Circuit arrangements for generating control signals
F02D 41/04 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
02Circuit arrangements for generating control signals
04Introducing corrections for particular operating conditions
F02M 21/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
21Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
02for gaseous fuels
CPC
B63H 2021/205
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
21Use of propulsion power plant or units on vessels
20the vessels being powered by combinations of different types of propulsion units
202of hybrid electric type
205the second power unit being of the internal combustion engine type, or the like, e.g. a Diesel engine
B63H 21/20
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
21Use of propulsion power plant or units on vessels
20the vessels being powered by combinations of different types of propulsion units
F02B 19/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
19Engines characterised by precombustion chambers
10with fuel introduced partly into pre-combustion chamber, and partly into cylinder
F02D 19/0642
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
19Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
06peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
0639characterised by the type of fuels
0642at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
F02D 2009/023
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
9Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
02concerning induction conduits
0201Arrangements; Control features; Details thereof
023Engine speed
F02D 2200/0602
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
0602Fuel pressure
Applicants
  • ヤンマー株式会社 YANMAR CO., LTD. [JP]/[JP]
  • 一般社団法人日本舶用工業会 JAPAN SHIP MACHINERY & EQUIPMENT ASSOCIATION [JP]/[JP]
Inventors
  • 萩原 良一 HAGIWARA Ryoichi
  • 山岸 修 YAMAGISHI Osamu
Agents
  • 矢野 寿一郎 YANO Juichiro
Priority Data
2013-22375428.10.2013JP
2013-22375528.10.2013JP
2013-22375628.10.2013JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) AUXILIARY-CHAMBER-TYPE GAS ENGINE
(FR) MOTEUR À GAZ DE TYPE À CHAMBRE AUXILIAIRE
(JA) 副室式ガスエンジン
Abstract
(EN) In order to address the problem of providing an auxiliary-chamber-type gas engine (100) capable of preventing a deterioration in fuel consumption even if fuel gas having a different composition is supplied, provided is an auxiliary chamber type gas engine (100) equipped with an ECU (50) including a fuel injection amount map for setting a command fuel injection amount (Q) for the fuel flow rate determined on the basis of the engine speed (Ne) and engine load (Ac), and a target air-supply-manifold pressure map for setting a target air-supply-manifold pressure (Pim) for the air flow rate determined on the basis of the engine speed (Ne) and engine load (Ac), wherein when there is need for a fuel injection rate for a fuel flow rate greater than the command fuel injection amount (Q) for the fuel flow rate determined on the basis of the engine speed (Ne) and engine load (Ac), the ECU (50) corrects the target air-supply-manifold pressure (Pim) for the air flow rate in the target air-supply-manifold pressure map such that the pressure is reduced.
(FR) Afin de traiter le problème de production d'un moteur à gaz (100) de type à chambre auxiliaire dans lequel la détérioration de la consommation de combustible est évitée même quand le gaz combustible de compositions différentes est apporté, l'invention concerne un moteur à gaz (100) de type à chambre auxiliaire équipé d'une ECU (50) comprenant une carte de quantité d'injection de combustible qui règle une quantité d'injection de combustible de commande (Q), qui est utilisée comme écoulement de combustible et déterminée par les tours de moteur (Ne) et la charge de moteur (Ac), et une carte de pression de tubulure d'alimentation en air cible qui règle une pression de tubulure d'alimentation en air cible (Pim), qui est utilisée comme écoulement d'air et déterminée par les tours de moteur (Ne) et la charge de moteur (Ac), l'ECU (50) ajustant la pression de tubulure d'alimentation en air cible (Pim), qui est utilisée comme écoulement d'air, de la carte de pression de tubulure d'alimentation en air cible de sorte que la pression soit réduite quand celle-ci est comparée à la quantité d'injection de combustible de commande (Q), qui est utilisée comme écoulement de combustible et déterminée par les tours de moteur (Ne) et la charge de moteur (Ac), et une quantité d'injection de combustible plus importante, qui est utilisée comme écoulement de combustible, est nécessaire.
(JA)  組成の異なる燃料ガスを供給された場合であっても燃料消費の悪化を防止することができる副室式ガスエンジン(100)を提供することを課題とする。エンジン回転数(Ne)及びエンジン負荷(Ac)より決定される燃料流量としての指令燃料噴射量(Q)を設定する燃料噴射量マップと、エンジン回転数(Ne)及びエンジン負荷(Ac)より決定される空気流量としての目標給気マニホールド圧力(Pim)を設定する目標給気マニホールド圧力マップと、が設定されるECU(50)を備える副室式ガスエンジン(100)であって、ECU(50)は、エンジン回転数(Ne)及びエンジン負荷(Ac)より決定される燃料流量としての指令燃料噴射量(Q)と比較して燃料流量としての燃料噴射量が多く必要な場合には、空気流量としての目標給気マニホールド圧力マップの目標給気マニホールド圧力(Pim)が小さくなるように補正する。
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