(19)
(11) EP 1 482 133 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.01.2010 Bulletin 2010/01

(43) Date of publication A2:
01.12.2004 Bulletin 2004/49

(21) Application number: 04253157.4

(22) Date of filing: 28.05.2004
(51) International Patent Classification (IPC): 
F01M 11/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 29.05.2003 JP 2003152360

(71) Applicant: Petroliam Nasional Berhad
50088 Kuala Lumpur (MY)

(72) Inventor:
  • Osman, Azmi, c/o Yamaha Eng. Dev. Co Ltd.
    Shizuoka 438-0026 (JP)

(74) Representative: Jones, John Bryn et al
Withers & Rogers LLP Goldings House 2 Hays Lane
London SE1 2HW
London SE1 2HW (GB)

   


(54) Oil scrubber for engine


(57) In an example, an engine 1 comprises a crankcase 4 having a lower opening 3, a crankshaft 6 supported on the crankcase 4 and capable of making a rotation R around a shaft center 5 extending approximately horizontally, and a baffle plate 18 for covering the lower opening 3. A communication passage 25 for communicating a crank chamber 2 and a space below is formed between an opening edge 21 of the lower opening 3 and an outer periphery 22 of the baffle plate 18. A linear protrusion 26 is disposed extending approximately in parallel with the crankshaft 6 and protruding upward from the baffle plate 18. Assuming that a region along the lower opening 3 is in the front (Fr) part in the direction of the rotation R of the crankshaft 6, the linear protrusion 26 is fitted into the rear part of the lower opening 3.
Such an arrangement can prevent oil in an engine comprising a baffle plate covering a lower opening of a crankcase from rotating unnecessarily in a crank chamber along with a crankshaft, and to prevent unnecessary power loss in the engine.







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