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1. (WO1985004689) TWO-STROKE ENGINE VARIABLE TUNED EXHAUST SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1985/004689 International Application No.: PCT/AU1985/000073
Publication Date: 24.10.1985 International Filing Date: 04.04.1985
IPC:
F01N 3/04 (2006.01) ,F02B 27/04 (2006.01) ,F02B 61/04 (2006.01) ,F02B 75/02 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02
for cooling, or for removing solid constituents of, exhaust
04
by means of liquids
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
27
Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
04
in exhaust systems only, e.g. for sucking-off combustion gases
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
61
Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
04
for driving propellers
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
75
Other engines, e.g. single-cylinder engines
02
Engines characterised by their cycles, e.g. six-stroke
Applicants:
ORBITAL ENGINE COMPANY PROPRIETARY LIMITED [AU/AU]; 4 Whipple Street Balcatta, W.A. 6021, AU (AllExceptUS)
GILBERT, Wayne, Ross [AU/AU]; AU (UsOnly)
Inventors:
GILBERT, Wayne, Ross; AU
Agent:
EDWD. WATERS & SONS; 50 Queen Street Melbourne, VIC 3000, AU
Priority Data:
PG 4492/8409.04.1984AU
Title (EN) TWO-STROKE ENGINE VARIABLE TUNED EXHAUST SYSTEM
(FR) SYSTEME D'ECHAPPEMENT CALE VARIABLE POUR MOTEUR A DEUX TEMPS
Abstract:
(EN) A two-stroke internal combustion engine (5) having a transfer port (9) and an exhaust port (8) in a cylinder (6) which are opened and closed in a timed relationship by the reciprocating movement of a piston (7). The exhaust port (8) communicates with an exhaust passage that is tuned to provide a pressure pattern in the exhaust passage that will create at the exhaust port (8) a predetermined pressure pattern while the exhaust port (8) is open. Coolant is supplied to the exhaust passage at engine speeds below the tuned speed and regulated over a range of engine speeds to maintain the pressure pattern in the exhaust passage over that range of engine speeds.
(FR) Moteur à combustion interne à deux temps (5) comportant une lumière de transfert (9) et une lumière d'échappement (8) dans un cylindre (6) qui sont fermées et ouvertes de manière synchronisée par le mouvement de va-et-vient d'un piston (7). La lumière d'échappement (8) communique avec un passage d'échappement qui est calé afin de fournir une pression dans le passage d'échappement qui va créer à la lumière d'évacuation (8) une pression prédéterminée pendant que la lumière d'échappement (8) est ouverte. Un liquide réfrigérant est amené au passage d'échappement à des vitesses de moteur inférieures à la vitesse calée et régulé sur toute une gamme de vitesses de moteur afin de maintenir la pression dans le passage d'échappement au-dessus de cette gamme de vitesses de moteur.
Designated States: AU, JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
SU01727529AU1985042305