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1. WO2018163847 - RECIPROCATING PISTON ENGINE

Publication Number WO/2018/163847
Publication Date 13.09.2018
International Application No. PCT/JP2018/006484
International Filing Date 22.02.2018
IPC
F02F 3/00 2006.1
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
F02F 7/00 2006.1
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
7Casings, e.g. crankcases
F16C 9/02 2006.1
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
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
9Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
02Crankshaft bearings
F16C 17/02 2006.1
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
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
02for radial load only
F16J 1/02 2006.1
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
02Bearing surfaces
F16J 1/04 2006.1
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
04Resilient guiding parts, e.g. skirts, particularly for trunk pistons
CPC
F02F 3/00
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 
F02F 3/022
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 
02having means for accommodating or controlling heat expansion
022the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval
F02F 7/00
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
7Casings, e.g. crankcases ; or frames
F16C 17/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
17Sliding-contact bearings for exclusively rotary movement
02for radial load only
F16C 3/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
3Shafts
04Crankshafts, eccentric-shafts; Cranks, eccentrics
06Crankshafts
F16C 33/1075
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
33Parts of bearings; Special methods for making bearings or parts thereof
02Parts of sliding-contact bearings
04Brasses; Bushes; Linings
06Sliding surface mainly made of metal
10Construction relative to lubrication
1025with liquid, e.g. oil, as lubricant
106Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
1075Wedges, e.g. ramps or lobes, for generating pressure
Applicants
  • マツダ株式会社 MAZDA MOTOR CORPORATION [JP]/[JP]
Inventors
  • 足立 崇勝 ADACHI, Takamasa
Agents
  • 小谷 悦司 KOTANI, Etsuji
  • 小谷 昌崇 KOTANI, Masataka
  • 平田 晴洋 HIRATA, Haruhiro
Priority Data
2017-04185006.03.2017JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RECIPROCATING PISTON ENGINE
(FR) MOTEUR À PISTON ALTERNATIF
(JA) 往復動ピストンエンジン
Abstract
(EN)
A projecting part 31S projecting to a first sliding surface 2A side in a cross-section along the sliding direction of a second sliding surface 31S is provided on the second sliding surface 31S, which slides relative to the first sliding surface 2A, and an apical part Ps, which becomes the most projected portion, and a bottom edge part Qs, which is arranged on the downstream side of the apical part in the sliding direction of at least the second sliding surface 31S and becomes the position that is most separated from the first sliding surface 2A, are provided on the projecting part 31S; when a gap between the first sliding surface 2A and the second sliding surface 31S at the apical part Ps is considered to be a minimum gap h1, and the gap at the bottom edge part Qs is considered to be a maximum gap h2, then h1 and h2 are set to ranges of h1 = 0.5-40 μm and h2/h1 = 1.5-5.0.
(FR)
Une partie en saillie (31S) faisant saillie vers un premier côté de surface coulissante (2A) dans une section transversale le long de la direction de coulissement d'une seconde surface coulissante (31S) est disposée sur la seconde surface coulissante (31S), qui coulisse par rapport à la première surface coulissante (2A), et une partie apicale (Ps), qui devient la partie la plus en saillie, et une partie de bord inférieur (Qs), qui est agencée sur le côté aval de la partie apicale dans la direction de coulissement d'au moins la seconde surface coulissante (31S) et devient la position qui est la plus séparée de la première surface coulissante (2A), sont disposées sur la partie en saillie (31S); lorsqu'un espace entre la première surface coulissante (2A) et la seconde surface coulissante (31S) au niveau de la partie apicale (Ps) est considéré comme étant un espace minimal (h1) et l'espace au niveau de la partie de bord inférieur (Qs) est considéré comme étant un espace maximal (h2), alors (h1) et (h2) sont définis dans des plages de h1 = 0,5 - 40 μm et h2/h1 = 1,5 - 5,0.
(JA)
第1摺動面2Aに対して相対的に摺動する第2摺動面31Sに、第2摺動面31Sの摺動方向に沿った断面において、第1摺動面2A側に張り出す張出形状部31Sを設けるとともに、この張出形状部31Sに、最も張り出した部分となる頂部Psと、この頂部の少なくとも第2摺動面31Sの摺動方向の下流側に配置され最も第1摺動面2Aに対して離間した位置となる裾部Qsとを設け、頂部Psにおける第1摺動面2Aと第2摺動面31Sとの間の隙間を最小隙間h1とし、裾部Qsにおけるこの隙間を最大隙間h2とするときに、h1=0.5μm~40μm、h2/h1=1.5~5.0の範囲に設定する。
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