| (19) |
 |
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(11) |
EP 1 586 751 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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24.03.2010 Bulletin 2010/12 |
| (43) |
Date of publication A2: |
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19.10.2005 Bulletin 2005/42 |
| (22) |
Date of filing: 11.04.2005 |
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| (51) |
International Patent Classification (IPC):
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| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI
SK TR |
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Designated Extension States: |
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AL BA HR LV MK YU |
| (30) |
Priority: |
16.04.2004 JP 2004121098
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| (71) |
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD. |
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Tokyo (JP) |
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| (72) |
Inventors: |
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- Murata, Satoru
5-chome,
Nagasaki,
Nagasaki-ken (JP)
- Yoshihara, Sadao
Hyogo-ku,
Kobe-shi,
Hyogo-ken (JP)
- Yamamoto, Tetsuya
Hyogo-ku,
Kobe-shi,
Hyogo-ken (JP)
- Izumi, Motoki
Hyogo-ku,
Kobe-shi,
Hyogo-ken (JP)
- Sonoda, Takashi
2-chome,
Takasago,
Hyogo-ken (JP)
|
| (74) |
Representative: HOFFMANN EITLE |
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Patent- und Rechtsanwälte
Arabellastrasse 4
81925 München
81925 München (DE) |
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| |
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| (54) |
Internal combustion engine with cylinder lubricating system |
(57) An internal combustion engine having a plurality of lubricators (12a,12b,12c...12n)
attached to one cylinder (11) for supplying lube oil in the common lube oil feeding
section (15) to the inner surface of the cylinder (11), wherein are provided a plurality
of electromagnetic valves (17a,17b,17c...17n) for opening or closing oil passages
(16a,16b...16n) connecting to the lubricators independently; lube oil supply pressure
detectors (21) for detecting the lube oil supply pressure of each of the lubricators;
and a controller (19) which controls the timing and period of opening of each of said
electromagnetic valves in accordance with loads and rotation speeds of the engine,
compares the detected lube oil supply pressure of each of the lubricators with a permissible
value of lube oil supply pressure, and judges that abnormality has occurred in lube
oil supply when the detected lube oil supply pressure exceeds the permissible value.