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1. (WO2006017085) FOUR STROKE ENGINE AUTO-IGNITION COMBUSTION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2006/017085 International Application No.: PCT/US2005/023851
Publication Date: 16.02.2006 International Filing Date: 01.07.2005
IPC:
F02B 69/06 (2006.01) ,F02B 75/02 (2006.01) ,F02M 25/07 (2006.01) ,F02B 75/20 (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
69
Internal-combustion engines convertible into other combustion-engine type, not provided for in group F02B11/129; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
06
for different cycles, e.g. convertible from two-stroke to four-stroke
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
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25
Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel, or fuel-air mixture
06
adding lubricant vapours or exhaust gases
07
adding exhaust 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
75
Other engines, e.g. single-cylinder engines
16
Engines characterised by number of cylinders, e.g. single-cylinder engines
18
Multi-cylinder engines
20
with cylinders all in one line
Applicants: GENERAL MOTORS CORPORATION[US/US]; Legal Staff-Mail Code 482-C23-B21 P.O. Box 300 Detroit, MI 48265-3000, US (AllExceptUS)
Inventors: KUO, Tang-Wei; US
ENG, James, A.; US
NAJT, Paul, M.; US
BROWN, Barry, L.; US
Agent: MARRA, Kathryn, A.; General Motors Corporation Legal Staff-Mail Code 482-C23-B21 P.O. Box 300 Detroit, MI 48265-3000, US
Priority Data:
11/041,79524.01.2005US
60/587,10112.07.2004US
Title (EN) FOUR STROKE ENGINE AUTO-IGNITION COMBUSTION
(FR) COMBUSTION A AUTOALLUMAGE DE MOTEUR A QUATRE TEMPS
Abstract:
(EN) A method of operating a four-stroke gasoline direct-injection controlled auto-ignition combustion engine includes opening both the intake and exhaust valves during terminal portions of the expansion strokes and initial portions of the contraction strokes, injecting fuel directly into the combustion chamber for mixing with retained gases and igniting the fuel near the ends of the contraction strokes. In the process, combustion gases are expanded to produce power during mayor portions of the expansion strokes, combusted gases are blown down into the exhaust outlet and the air inlet and are partially redrawn into the cylinder with fresh air during the terminal portions of the expansion strokes so the air charges are heated by the hot exhaust gases. Portions of the charges re-expelled and the remaining portions of the charges and injected fuel are compressed for ignition of the dilute fuel/ air and exhaust gas mixture. Substantial reductions of NOx emissions result from the method.
(FR) L'invention porte sur un procédé de fonctionnement d'un moteur à combustion à autoallumage contrôlé à injection directe d'essence à quatre temps, qui consiste à ouvrir à la fois la soupape d'admission et la soupape d'échappement pendant les parties terminales des courses de détente et les parties initiales des courses de contraction, à injecter le carburant directement dans la chambre de combustion afin de le mélanger aux gaz retenus et à allumer le carburant vers la fin des courses de contraction. Au cours du processus, les gaz de combustion se dilatent de manière qu'ils produisent de l'énergie pendant la majeure partie des courses de détente, les gaz brûlés sont évacués par la sortie d'échappement et par l'admission d'air et sont partiellement réintroduits dans le cylindre avec de l'air frais pendant les parties terminales des courses de détente de manière que les charges d'air sont chauffées par les gaz d'échappement chauds. Des parties des charges sont à nouveau évacuées et les parties restantes des charges et le carburant injecté sont comprimés afin de permettre l'allumage du mélange air/carburant et gaz d'échappement dilué. Le procédé de l'invention permet de réduire sensiblement les émissions de NOx.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)