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1. WO2000043660 - CYLINDER FOR INTERNAL COMBUSTION ENGINE

Publication Number WO/2000/043660
Publication Date 27.07.2000
International Application No. PCT/SE2000/000057
International Filing Date 14.01.2000
Chapter 2 Demand Filed 17.08.2000
IPC
F02B 25/14 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
25Engines characterised by using fresh charge for scavenging cylinders
14using reverse-flow scavenging, e.g. with both inlet and outlet ports arranged near bottom of piston stroke
F02B 25/22 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
25Engines characterised by using fresh charge for scavenging cylinders
20Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups F02B25/02-F02B25/18234
22by forming air cushion between charge and combustion residues
F02B 33/04 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
33Engines characterised by provision of pumps for charging or scavenging
02Engines with reciprocating-piston pumps; Engines with crankcase pumps
04with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
F02B 63/02 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
63Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
02for hand-held tools
F02B 75/02 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
75Other engines, e.g. single-cylinder engines
02Engines characterised by their cycles, e.g. six-stroke
F02F 1/22 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
1Cylinders; Cylinder heads
18Other cylinders
22characterised by having ports in cylinder wall for scavenging or charging
CPC
F02B 2075/025
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
75Other engines
02Engines characterised by their cycles, e.g. six-stroke
022having less than six strokes per cycle
025two
F02B 25/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
25Engines characterised by using fresh charge for scavenging cylinders
14using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
F02B 25/22
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
25Engines characterised by using fresh charge for scavenging cylinders
20Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
22by forming air cushion between charge and combustion residues
F02B 33/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
33Engines characterised by provision of pumps for charging or scavenging
02Engines with reciprocating-piston pumps; Engines with crankcase pumps
04with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
F02B 63/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
63Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
02for hand-held tools
F02F 1/22
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
1Cylinders; Cylinder heads
18Other cylinders
22characterised by having ports in cylinder wall for scavenging or charging
Applicants
  • AKTIEBOLAGET ELECTROLUX [SE/SE]; S-105 45 Stockholm, SE (AllExceptUS)
  • ANDERSSON, Lars [SE/SE]; SE (UsOnly)
  • MARTINSSON, Pär [SE/SE]; SE (UsOnly)
Inventors
  • ANDERSSON, Lars; SE
  • MARTINSSON, Pär; SE
Agents
  • ANDERSSON, Lars ; AB Electrolux c/o Husqvarna AB S-433 81 Jonsered, SE
Priority Data
9900138-019.01.1999SE
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) CYLINDER FOR INTERNAL COMBUSTION ENGINE
(FR) CYLINDRE POUR MOTEUR A COMBUSTION INTERNE
Abstract
(EN)
The invention refers to a cylinder (1) for a two-stroke, crankcase scavenged combustion engine, comprising an inlet pipe (10) for air/fuel mixture, at least one transfer port (17), and at least one outer connecting port (18) intended to be connected to a connecting duct (not shown), whereby the outer connecting port (18) is arranged so that it can be connected to the mentioned transfer port (17) via a piston ported air passage. The outer connecting port (18) is located below the inlet pipe (10) and at least one wall passage (14) extends from the mentioned outer connecting port (18), obliquely upwards through the cylinder wall, to at least one connecting port (16). This design enables the cooling air to flow freely around the cylinder above the inlet pipe (10), which improves the cooling of the cylinder.
(FR)
La présente invention concerne un cylindre (1) pour moteur à combustion deux temps à balayage par le carter pompe. Ce cylindre comprend une pipe d'admission (10) du mélange air/carburant, au moins un canal de transfert (17), et au moins un orifice de liaison extérieur (18) destiné à être connecté à un conduit de raccordement (ne figure pas sur le dessin). L'orifice de liaison extérieur (18) est agencé de sorte qu'on puisse le connecter au canal de transfert (17) précité via un passage d'air dans le piston. L'orifice de liaison extérieur (18) est situé sous la pipe d'admission (10) et au moins un passage de paroi (14) part de l'orifice de liaison extérieur susmentionné (18) monte en oblique à travers la paroi du cylindre, jusqu'à au moins un orifice de liaison (16). Cette conception permet à l'air de refroidissement de s'écouler librement autour du cylindre au dessus de la pipe d'admission (10), ce qui améliore le refroidissement du cylindre.
Also published as
Latest bibliographic data on file with the International Bureau