EP 0890719 A1 19990113 - Stepped piston internal combustion engine
Title (en)
Stepped piston internal combustion engine
Title (de)
Stufenkolbenbrennkraftmaschine
Title (fr)
Moteur à combustion interne à piston étagé
Publication
Application
Priority
- EP 97304984 A 19970708
- GB 9610477 A 19960518
- GB 9602063 A 19960201
- GB 9700769 A 19970115
Abstract (en)
A stepped-piston, internal-combustion engine includes at least one cylinder, each cylinder having a working part (12) of lesser diameter defined by a cylindrical wall (21) and a pumping part (13) of greater diameter, a piston slidable in each cylinder, a receiver (25) which is partly delimited by the cylindrical wall (21) of the working part of each cylinder and which extends at least partly around each working part, working inlet ports (23) in the cylindrical wall and extending between the working part of the cylinder and the receiver and valve means (30, 39) to control the entry of charge into the pumping part (13) of each cylinder and the transfer of charge from said pumping part (13) to the receiver (25) is controlled by the uncovering of the working inlet ports (23) by the working part of the piston. <IMAGE>
IPC 1-7
IPC 8 full level
F01L 7/02 (2006.01); F02B 33/14 (2006.01); F02B 33/30 (2006.01); F02B 33/44 (2006.01); F02B 75/02 (2006.01); F02B 75/18 (2006.01); F02B 75/22 (2006.01)
CPC (source: EP)
F01L 7/025 (2013.01); F02B 33/14 (2013.01); F02B 33/30 (2013.01); F02B 33/44 (2013.01); F02B 75/22 (2013.01); F02B 2075/025 (2013.01); F02B 2075/1812 (2013.01)
Citation (search report)
- [X] GB 790508 A 19580212 - HEDGES MOTOR COMPANY INC
- [A] US 2440726 A 19480504 - PROBST KARL K
- [A] US 5365899 A 19941122 - DOERAGRIP GUSTAF F A [SE]
- [A] US 2609802 A 19520909 - OTTO ELWERT, et al
- [A] US 4781153 A 19881101 - HOOPER BERNARD [GB]
- [E] GB 2309742 A 19970806 - HOOPER BERNARD [GB], et al
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
GB 2309742 A 19970806; GB 2309742 B 19990512; GB 9700769 D0 19970305; EP 0890719 A1 19990113
DOCDB simple family (application)
GB 9700769 A 19970115; EP 97304984 A 19970708