Crankshaft bearing structure

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11536170
APP PUB NO 20220282647A1
SERIAL NO

17649493

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A crankshaft bearing structure is provided, in which a crankshaft includes a first crank journal and a second crank journal, and a crank pin disposed therebetween. First upper-and-lower journal bearings and second upper-and-lower journal bearings are attached to the respective crank journals, and each upper bearing includes an oil hole connected to an oil passage to supply oil to between the crank journal and the journal bearings. An in-shaft oil passage is formed in the crankshaft to draw oil from an outer circumferential surface of the second crank journal to an outer circumferential surface of the crank pin. The second upper journal bearing has, on an inner circumferential surface thereof, a circumferential groove connected to the oil hole. The oil is supplied to between the first upper-and-lower journal bearings and the first crank journal, only through a passage passing through the oil hole of the first upper journal bearing.

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First Claim

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Patent Owner(s)

  • MAZDA MOTOR CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kumagai, Koji Aki-gun, JP 11 32
Misaki, Yukio Aki-gun, JP 3 4
Onda, Takahiro Aki-gun, JP 4 8
Sasaki, Tatsunori Aki-gun, JP 8 15
Tamari, Hirotaka Aki-gun, JP 3 3
Wada, Shigeru Aki-gun, JP 51 949

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