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1. WO2020196098 - DIESEL ENGINE

Publication Number WO/2020/196098
Publication Date 01.10.2020
International Application No. PCT/JP2020/011731
International Filing Date 17.03.2020
IPC
F02B 23/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23Other engines characterised by special shape or construction of combustion chambers to improve operation
02with compression ignition
06the combustion space being arranged in working piston
F02F 3/12 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
10having surface coverings
12on piston heads
F02F 3/26 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
FCYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
3Pistons
26having combustion chamber in piston head
F16J 1/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
1Pistons; Trunk pistons; Plungers
F16J 1/01 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
JPISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
1Pistons; Trunk pistons; Plungers
01characterised by the use of particular materials
Applicants
  • ヤンマー株式会社 YANMAR CO., LTD. [JP]/[JP]
Inventors
  • 甲田 和之 KODA Kazuyuki
  • 栗林 真幹 KURIBAYASHI Masaki
Agents
  • 特許業務法人あーく特許事務所 ARC PATENT ATTORNEYS' OFFICE
Priority Data
2019-05668425.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DIESEL ENGINE
(FR) MOTEUR DIESEL
(JA) ディーゼルエンジン
Abstract
(EN)
Provided is a diesel engine (1) comprising a piston (5) and a fuel injection valve (6), wherein the piston (5) has, formed in the piston top surface (50), a cavity (51) which opens towards the lower surface side of a cylinder head (3) and which contains a bottom surface (51b) and an inside surface (51c), the fuel injection valve (6) injects fuel to part of the inside surface (51c) of the cavity (51), and the piston top surface (50) has dimples (52) formed on only the area (50a) corresponding to the fuel injection direction (60) of the fuel injection valve (6) in plan view.
(FR)
L'invention concerne un moteur diesel (1), lequel moteur comprend un piston (5) et une vanne d'injection de carburant (6), le piston (5) ayant, formée dans la surface supérieure de piston (50), une cavité (51) qui s'ouvre vers le côté de surface inférieure d'une culasse (3) et qui contient une surface inférieure (51b) et une surface interne (51c), la vanne d'injection de carburant (6) injectant du carburant vers une partie de la surface interne (51c) de la cavité (51), et la surface supérieure de piston (50) ayant des alvéoles (52) formées uniquement sur la surface (50a) correspondant à la direction d'injection de carburant (60) de la vanne d'injection de carburant (6) en vue en plan.
(JA)
ピストン(5)と、燃料噴射弁(6)とを有するディーゼルエンジン(1)において、ピストン(5)は、ピストン頂面(50)に、シリンダヘッド(3)下面側に向かって開口し、底面(51b)と内側面(51c)とを含むキャビティ(51)が形成されており、燃料噴射弁(6)は、キャビティ(51)の内側面(51c)の一部に向かって燃料を噴射し、ピストン頂面(50)には、平面視において燃料噴射弁(6)の燃料噴射方向(60)と対応する領域(50a)にのみ、ディンプル(52)が形成されている。
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