EP 4115072 A1 20230111 - RECIPROCATING ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
RECIPROCATING ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
KOLBENANORDNUNG FÜR EINE BRENNKRAFTMASCHINE
Title (fr)
ENSEMBLE À MOUVEMENT ALTERNATIF POUR MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- IN 202041008781 A 20200302
- IN 2021050194 W 20210302
Abstract (en)
[origin: WO2021176466A1] A vehicle's fuel efficiency can be increased by reduce overall size and weight of the engine. A longer connecting rod results in higher block height which leads to larger engine height and thereby resulting into increased engine mass. The overall weight of the engine can by reduced by reducing length of connecting rod. Thus, for improving fuel economy, a combination of crank offset and reduced L/S ratio provides better results. This is achieved by providing a L/S ratio < 1.65, where L is length of the connecting rod and S is the stroke length. According to one embodiment of the present invention, a reduced connecting rod length results into fouling of piston and crank web, which is eliminated by providing relief in the piston skirt and the crank web along the profile of interference of piston skirt and the crank web.
IPC 8 full level
F02F 3/02 (2006.01); F02F 3/24 (2006.01); F16F 15/20 (2006.01)
CPC (source: EP)
F02F 3/00 (2013.01); F16F 15/283 (2013.01)
Citation (search report)
See references of WO 2021176466A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021176466 A1 20210910; BR 112022017611 A2 20221018; CN 115190941 A 20221014; EP 4115072 A1 20230111; MX 2022010839 A 20220927
DOCDB simple family (application)
IN 2021050194 W 20210302; BR 112022017611 A 20210302; CN 202180017752 A 20210302; EP 21714023 A 20210302; MX 2022010839 A 20210302