EP 1314870 A1 20030528 - Enhanced two-stroke endothermic engine
Title (en)
Enhanced two-stroke endothermic engine
Title (de)
Verbesserte Zweitakt-Brennkraftmaschine
Title (fr)
Moteur endothermique à deux temps amélioré
Publication
Application
Priority
EP 01830718 A 20011121
Abstract (en)
The enhanced two-stroke engine (1) comprises a crankcase (2), a cylinder (3) provided with an exhaust port (6), a series of transfer ports (7) communicating with the crankcase (2), the cylinder (3) further comprises at least an air inlet port (8) positioned in proximity to the exhaust port (6) and connected to a source (13) that supplies pure air towards the port (8), in such a way that the air allowed in by the port (8) creates an air barrier in front of the exhaust port (6); the pollution-abating action is based on three different principles: (i) shield against the egress of cool gases to the exhaust, (ii) oxidation and post-combustion in the exhaust system anticipating the operation of the catalyst, (iii) stratification of the charge of fuel-air mixture in the cylinder with globally leaner combustion with respect to traditional two-stroke engines. <IMAGE>
IPC 1-7
IPC 8 full level
F02B 25/22 (2006.01); F02B 61/02 (2006.01); F02B 75/02 (2006.01)
CPC (source: EP)
F02B 25/22 (2013.01); F02B 61/02 (2013.01); F02B 2075/025 (2013.01)
Citation (applicant)
- US 2017009 A 19351008 - DOUGLAS MARCHANT WILLIAM, et al
- DE 2619136 A1 19761230 - THAELMANN FAHRZEUG JAGDWAFFEN
- DD 213471 A1 19840912 - VEG Z TIERZUCHT NORDHAUSEN [DD]
- WO 0055488 A1 20000921 - DEERE & CO [US]
- US 4848279 A 19890718 - LUO JIH-TZANG [TW]
Citation (search report)
- [X] DE 19900445 A1 20000713 - STIHL MASCHF ANDREAS [DE]
- [X] GB 2115485 A 19830907 - NAT RES DEV
- [X] US 4899698 A 19900213 - THERY GEORGES [US]
- [X] FR 759044 A 19340127
- [X] FR 2693507 A1 19940114 - AURA [FR]
- [X] PATENT ABSTRACTS OF JAPAN vol. 010, no. 273 (M - 518) 17 September 1986 (1986-09-17)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1314870 A1 20030528; EP 1314870 B1 20050209; AT E289003 T1 20050215; DE 60108886 D1 20050317
DOCDB simple family (application)
EP 01830718 A 20011121; AT 01830718 T 20011121; DE 60108886 T 20011121