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1. (WO1997018384) IMPROVEMENTS IN COMBUSTION ENGINES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018384 International Application No.: PCT/NZ1996/000128
Publication Date: 22.05.1997 International Filing Date: 14.11.1996
Chapter 2 Demand Filed: 04.06.1997
IPC:
F02B 3/06 (2006.01) ,F02B 23/06 (2006.01) ,F02B 41/04 (2006.01) ,F02D 13/02 (2006.01) ,F02F 1/10 (2006.01) ,F02F 1/24 (2006.01)
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
3
Engines characterised by air compression and subsequent fuel addition
06
with compression ignition
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
23
Other engines characterised by special shape or construction of combustion chambers to improve operation
02
with compression ignition
06
the combustion space being arranged in working piston
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
41
Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
02
Engines with prolonged expansion
04
in main cylinders
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
13
Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
02
during engine operation
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
1
Cylinders; Cylinder heads
02
having cooling means
10
for liquid cooling
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
1
Cylinders; Cylinder heads
24
Cylinder heads
Applicants:
TAYLOR, John, Brengle [NZ/NZ]; NZ
Inventors:
TAYLOR, John, Brengle; NZ
Agent:
LYTH, Richard, John ; Baldwin, Son & Carey 342 Lambton Quay Wellington 6001, NZ
Priority Data:
28046414.11.1995NZ
28050020.11.1995NZ
28070619.12.1995NZ
28084718.01.1996NZ
28656513.05.1996NZ
Title (EN) IMPROVEMENTS IN COMBUSTION ENGINES
(FR) AMELIORATIONS DES MOTEURS A COMBUSTION INTERNE
Abstract:
(EN) Improvements to the construction and operation of reciprocating internal combustion engines are described. The invention may have particular application to compression ignition engines. The constructional modifications relate to components designed to be inserted between a cylinder head and piston bore where those components effect a reduction in the combustion volume thereby reducing the geometrical compression ratio of the engine. These components may be integrated with the cylinder head and include a cylindrical sleeve or a spacer plate. These components can further incorporate a heating/cooling system to regulate the combustion chamber temperature during various phases of the engine's operation. A method is described which may be used in conjunction with the modified engine whereby turbulence from a turbo charging unit is preserved in the intake air thus enhancing air/fuel mixing. Further variations are made to the timing regime of the engine including delaying closure of the inlet valves and early opening of the exhaust valves. Further operating modifications include varying the shape of the air/fuel mixture cloud which is injected into the combustion volume so that the mixture is forced symmetrically radially outward from the point of injection and combining this step with turbo charging the intake air in such a manner so as to produce turbulence in the air fuel mixture within the combustion volume. This latter operating regime includes early opening of the exhaust valve and late closure of the inlet valve. Modified piston shapes are described as are modifications to the combustion chamber shape resulting from the use of the spacer place or ring components designed to reduce the geometrical compression ratio of the regime.
(FR) La présente invention concerne des améliorations de la structure et du fonctionnement de moteurs alternatifs à combustion interne. L'invention peut s'appliquer particulièrement aux moteurs à allumage par compression. Les modifications de la structure portent sur des éléments constitutifs qui sont conçus pour être introduits entre une culasse et un alésage de cylindre, où ces éléments produisent une réduction du volume de combustion, réduisant ainsi le taux de compression géométrique du moteur. Ces éléments constitutifs peuvent faire partie intégrante de la culasse, et ils comprennent une chemise cylindrique ou une plaque d'écartement. Ils peuvent en outre comprendre un système de chauffage et de refroidissement servant à réguler la température de la chambre de combustion pendant différentes phases du fonctionnement du moteur. L'invention concerne aussi un procédé qui peut être utilisé avec le moteur modifié, avec préservation des turbulences provenant d'un turbocompresseur dans l'air admis, ce qui améliore le mélange air-carburant. D'autres modifications sont apportées au régime de distribution, dont une fermeture retardée des soupapes d'admission et une ouverture précoce des soupapes d'échappement. D'autres modifications du fonctionnement comprennent le changement de la forme du nuage de mélange air-carburant, qui est injecté dans le volume de combustion, de telle sorte que le mélange est chassé symétriquement et radialement vers l'extérieur, à partir du point d'injection, et la combinaison de cette phase avec la turbocompression de l'air d'admission, de manière à produire des turbulences dans le mélange air-carburant, à l'intérieur du volume de combustion. Ce dernier régime de fonctionnement comprend une ouverture précoce de la soupape d'échappement et une fermeture retardée de la soupape d'admission. L'invention porte aussi sur des formes de pistons modifiées ainsi que sur des modifications de la forme de la chambre de combustion résultant de l'utilisation de la plaque d'écartement ou d'éléments annulaires conçus pour réduire le taux de compression géométrique du moteur.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1996077130